From 829d3a75cdffa35b30f1b235ca3e85ba9c55a821 Mon Sep 17 00:00:00 2001
From: francis95-han <mir2285@outlook.com>
Date: Thu, 10 Aug 2023 22:06:37 +0800
Subject: [PATCH] Site updated: 2023-08-10 22:06:29

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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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-            <a href="/tags/PyQt/" rel="tag"># PyQt</a>
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-            <a href="/tags/GUI/" rel="tag"># GUI</a>
-          
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+            <a href="/tags/GUI/" rel="tag"># GUI</a>
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+                <i class="fa fa-chevron-left"></i> PyQT学习记录（二）
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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@@ -710,7 +710,7 @@ <h4 id="python模拟"><a href="#python模拟" class="headerlink" title="python
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git a/2018/09/27/theory/algorithm/three-door/index.html b/2018/09/27/theory/algorithm/three-door/index.html
index 99881dd9..2b14cec1 100644
--- a/2018/09/27/theory/algorithm/three-door/index.html
+++ b/2018/09/27/theory/algorithm/three-door/index.html
@@ -715,7 +715,7 @@ <h4 id="Python模拟以上过程"><a href="#Python模拟以上过程" class="hea
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git a/2018/09/28/theory/linux/linux-cgroup-interface/index.html b/2018/09/28/theory/linux/linux-cgroup-interface/index.html
index 1dcae817..c90990d2 100644
--- a/2018/09/28/theory/linux/linux-cgroup-interface/index.html
+++ b/2018/09/28/theory/linux/linux-cgroup-interface/index.html
@@ -700,7 +700,7 @@ <h1 class="post-title" itemprop="name headline">Cgroup简介</h1>
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git a/2018/09/28/theory/linux/linux-namespace-interface/index.html b/2018/09/28/theory/linux/linux-namespace-interface/index.html
index a709aec8..e0a4ae48 100644
--- a/2018/09/28/theory/linux/linux-namespace-interface/index.html
+++ b/2018/09/28/theory/linux/linux-namespace-interface/index.html
@@ -694,7 +694,7 @@ <h1 class="post-title" itemprop="name headline">Namespace简介</h1>
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git a/2018/09/28/using/middleware/docker-using/index.html b/2018/09/28/using/middleware/docker-using/index.html
index 445dd0f8..1469e2e1 100644
--- a/2018/09/28/using/middleware/docker-using/index.html
+++ b/2018/09/28/using/middleware/docker-using/index.html
@@ -107,7 +107,7 @@
 <meta property="og:description" content="安装1yum install -y docker 修改docker下载源为国内源(这里使用的阿里源)12345678sudo mkdir -p &#x2F;etc&#x2F;dockersudo tee &#x2F;etc&#x2F;docker&#x2F;daemon.json &lt;&lt;-&amp;#x27;EOF&amp;#x27;&amp;#123;  &quot;registry-mirrors&quot;: [&quot;https:&#x2F;&#x2F;n9tog3e">
 <meta property="og:locale">
 <meta property="article:published_time" content="2018-09-28T02:13:57.000Z">
-<meta property="article:modified_time" content="2023-02-26T09:45:06.093Z">
+<meta property="article:modified_time" content="2023-08-10T14:04:53.171Z">
 <meta property="article:author" content="Bohan Zhang">
 <meta property="article:tag" content="linux">
 <meta property="article:tag" content="docker">
@@ -367,8 +367,8 @@ <h1 class="post-title" itemprop="name headline">Docker使用记录</h1>
               
                 <span class="post-meta-item-text">更新于&#58;</span>
               
-              <time title="更新于" itemprop="dateModified" datetime="2023-02-26T17:45:06+08:00">
-                2023-02-26
+              <time title="更新于" itemprop="dateModified" datetime="2023-08-10T22:04:53+08:00">
+                2023-08-10
               </time>
             
           </span>
@@ -428,6 +428,11 @@ <h4 id="修改docker下载源为国内源-这里使用的阿里源"><a href="#
 <p>其他源：<br><a target="_blank" rel="noopener" href="https://registry.docker-cn.com">Docker 官方中国区 https://registry.docker-cn.com</a><br><a target="_blank" rel="noopener" href="http://hub-mirror.c.163.com">网易 http://hub-mirror.c.163.com</a><br><a target="_blank" rel="noopener" href="http://hub-mirror.c.163.com">ustc https://docker.mirrors.ustc.edu.cn</a>  </p>
 <h4 id="Docker镜像使用"><a href="#Docker镜像使用" class="headerlink" title="Docker镜像使用"></a>Docker镜像使用</h4><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">#docekr search software 查找镜像</span></span><br><span class="line">docker search httpd</span><br><span class="line"><span class="comment">#docker pull software 下拉镜像</span></span><br><span class="line">docker pull redis</span><br><span class="line">docker pull mariadb</span><br><span class="line">docekr pull mongo</span><br><span class="line">docker pull cloudesire/activemq</span><br><span class="line">docker pull rabbitmq</span><br><span class="line">docker pull rabbitmq:3-management</span><br><span class="line">docker pull nginx</span><br><span class="line">docker pull tomcat </span><br><span class="line"></span><br></pre></td></tr></table></figure>
 <h4 id="docker指令帮助"><a href="#docker指令帮助" class="headerlink" title="docker指令帮助"></a>docker指令帮助</h4><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">docker --<span class="built_in">help</span></span><br><span class="line"><span class="comment">#docker command --help 查看docker帮助</span></span><br><span class="line">docker start --<span class="built_in">help</span></span><br><span class="line"><span class="comment">#man docker command 查看command的man文档</span></span><br><span class="line">man docker start</span><br></pre></td></tr></table></figure>
+<h1 id="编辑-etc-profile"><a href="#编辑-etc-profile" class="headerlink" title="编辑/etc/profile"></a>编辑/etc/profile</h1><p>vim /etc/profile</p>
+<h1 id="将jdk配置到path"><a href="#将jdk配置到path" class="headerlink" title="将jdk配置到path"></a>将jdk配置到path</h1><p>export JAVA_HOME=java-1.8.0-openjdk-1.8.0.372.b07-1.el7_9.x86_64<br>export CLASSPATH=$:CLASSPATH:$JAVA_HOME/lib/<br>export PATH=$PATH:$JAVA_HOME/bin:$M2_HOME/bin</p>
+<h1 id="配置hadoop"><a href="#配置hadoop" class="headerlink" title="配置hadoop"></a>配置hadoop</h1><p>export HADOOP_HOME=/opt/hadoop-3.1.1<br>export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin</p>
+<h1 id="刷新环境变量"><a href="#刷新环境变量" class="headerlink" title="刷新环境变量"></a>刷新环境变量</h1><p>source /etc/profile</p>
+
       
     </div>
     
@@ -662,7 +667,7 @@ <h4 id="docker指令帮助"><a href="#docker指令帮助" class="headerlink" tit
             
 
             
-              <div class="post-toc-content"><ol class="nav"><li class="nav-item nav-level-4"><a class="nav-link" href="#%E5%AE%89%E8%A3%85"><span class="nav-number">1.</span> <span class="nav-text">安装</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#%E4%BF%AE%E6%94%B9docker%E4%B8%8B%E8%BD%BD%E6%BA%90%E4%B8%BA%E5%9B%BD%E5%86%85%E6%BA%90-%E8%BF%99%E9%87%8C%E4%BD%BF%E7%94%A8%E7%9A%84%E9%98%BF%E9%87%8C%E6%BA%90"><span class="nav-number">2.</span> <span class="nav-text">修改docker下载源为国内源(这里使用的阿里源)</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#Docker%E9%95%9C%E5%83%8F%E4%BD%BF%E7%94%A8"><span class="nav-number">3.</span> <span class="nav-text">Docker镜像使用</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#docker%E6%8C%87%E4%BB%A4%E5%B8%AE%E5%8A%A9"><span class="nav-number">4.</span> <span class="nav-text">docker指令帮助</span></a></li></ol></div>
+              <div class="post-toc-content"><ol class="nav"><li class="nav-item nav-level-4"><a class="nav-link" href="#%E5%AE%89%E8%A3%85"><span class="nav-number">1.</span> <span class="nav-text">安装</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#%E4%BF%AE%E6%94%B9docker%E4%B8%8B%E8%BD%BD%E6%BA%90%E4%B8%BA%E5%9B%BD%E5%86%85%E6%BA%90-%E8%BF%99%E9%87%8C%E4%BD%BF%E7%94%A8%E7%9A%84%E9%98%BF%E9%87%8C%E6%BA%90"><span class="nav-number">2.</span> <span class="nav-text">修改docker下载源为国内源(这里使用的阿里源)</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#Docker%E9%95%9C%E5%83%8F%E4%BD%BF%E7%94%A8"><span class="nav-number">3.</span> <span class="nav-text">Docker镜像使用</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#docker%E6%8C%87%E4%BB%A4%E5%B8%AE%E5%8A%A9"><span class="nav-number">4.</span> <span class="nav-text">docker指令帮助</span></a></li></ol></li></ol></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E7%BC%96%E8%BE%91-etc-profile"><span class="nav-number"></span> <span class="nav-text">编辑&#x2F;etc&#x2F;profile</span></a></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E5%B0%86jdk%E9%85%8D%E7%BD%AE%E5%88%B0path"><span class="nav-number"></span> <span class="nav-text">将jdk配置到path</span></a></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E9%85%8D%E7%BD%AEhadoop"><span class="nav-number"></span> <span class="nav-text">配置hadoop</span></a></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E5%88%B7%E6%96%B0%E7%8E%AF%E5%A2%83%E5%8F%98%E9%87%8F"><span class="nav-number"></span> <span class="nav-text">刷新环境变量</span></a></div>
             
 
           </div>
@@ -708,7 +713,7 @@ <h4 id="docker指令帮助"><a href="#docker指令帮助" class="headerlink" tit
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2018/09/29/using/db/nosql/mariadb-using/index.html b/2018/09/29/using/db/nosql/mariadb-using/index.html
index 2b7bc7cc..1795550b 100644
--- a/2018/09/29/using/db/nosql/mariadb-using/index.html
+++ b/2018/09/29/using/db/nosql/mariadb-using/index.html
@@ -722,7 +722,7 @@ <h4 id="远程登录设置"><a href="#远程登录设置" class="headerlink" tit
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2018/10/11/using/java/framework/springcloud-1/index.html b/2018/10/11/using/java/framework/springcloud-1/index.html
index 0667bfcf..74ffa780 100644
--- a/2018/10/11/using/java/framework/springcloud-1/index.html
+++ b/2018/10/11/using/java/framework/springcloud-1/index.html
@@ -748,7 +748,7 @@ <h4 id="初探Spring-Cloud"><a href="#初探Spring-Cloud" class="headerlink" tit
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2018/10/11/using/java/framework/springcloud-2/index.html b/2018/10/11/using/java/framework/springcloud-2/index.html
index 7bf78b20..f128fb6d 100644
--- a/2018/10/11/using/java/framework/springcloud-2/index.html
+++ b/2018/10/11/using/java/framework/springcloud-2/index.html
@@ -749,7 +749,7 @@ <h2 id="项目代码地址"><a href="#项目代码地址" class="headerlink" tit
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2018/10/12/using/java/framework/springcloud-3/index.html b/2018/10/12/using/java/framework/springcloud-3/index.html
index a18edbc5..f7043816 100644
--- a/2018/10/12/using/java/framework/springcloud-3/index.html
+++ b/2018/10/12/using/java/framework/springcloud-3/index.html
@@ -753,7 +753,7 @@ <h5 id="DELETE请求"><a href="#DELETE请求" class="headerlink" title="DELETE
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2018/10/13/using/java/framework/springcloud-4/index.html b/2018/10/13/using/java/framework/springcloud-4/index.html
index 19c0800b..ac83139d 100644
--- a/2018/10/13/using/java/framework/springcloud-4/index.html
+++ b/2018/10/13/using/java/framework/springcloud-4/index.html
@@ -716,7 +716,7 @@ <h3 id="实现容错保护"><a href="#实现容错保护" class="headerlink" tit
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git a/2018/10/15/theory/algorithm/machinelearning/machinelearning-1/index.html b/2018/10/15/theory/algorithm/machinelearning/machinelearning-1/index.html
index 75fcaa3e..9f6ee7dd 100644
--- a/2018/10/15/theory/algorithm/machinelearning/machinelearning-1/index.html
+++ b/2018/10/15/theory/algorithm/machinelearning/machinelearning-1/index.html
@@ -88,7 +88,7 @@
 
 
 
-  <meta name="keywords" content="python,Machine Learning,AI,Algorithm," />
+  <meta name="keywords" content="python,Machine Learning,Algorithm,AI," />
 
 
 
@@ -111,8 +111,8 @@
 <meta property="article:author" content="Bohan Zhang">
 <meta property="article:tag" content="python">
 <meta property="article:tag" content="Machine Learning">
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-            <a href="/tags/AI/" rel="tag"># AI</a>
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+            <a href="/tags/AI/" rel="tag"># AI</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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-<meta property="article:tag" content="AI">
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+<meta property="article:tag" content="AI">
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-            <a href="/tags/AI/" rel="tag"># AI</a>
-          
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+            <a href="/tags/AI/" rel="tag"># AI</a>
+          
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+            <a href="/tags/springboot/" rel="tag"># springboot</a>
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-            <a href="/tags/springboot/" rel="tag"># springboot</a>
-          
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-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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@@ -865,7 +865,7 @@ <h3 id="参考资料"><a href="#参考资料" class="headerlink" title="参考
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2019/02/22/machine learning/clawler/clawler-5/index.html b/2019/02/22/machine learning/clawler/clawler-5/index.html
index 22ee0f37..4d13537d 100644
--- a/2019/02/22/machine learning/clawler/clawler-5/index.html	
+++ b/2019/02/22/machine learning/clawler/clawler-5/index.html	
@@ -710,7 +710,7 @@ <h3 id="参考资料"><a href="#参考资料" class="headerlink" title="参考
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2019/02/22/machine learning/clawler/crawler-3/index.html b/2019/02/22/machine learning/clawler/crawler-3/index.html
index 54896690..c923b812 100644
--- a/2019/02/22/machine learning/clawler/crawler-3/index.html	
+++ b/2019/02/22/machine learning/clawler/crawler-3/index.html	
@@ -823,7 +823,7 @@ <h3 id="参考资料"><a href="#参考资料" class="headerlink" title="参考
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2019/02/25/machine learning/clawler/clawler-6/index.html b/2019/02/25/machine learning/clawler/clawler-6/index.html
index 3c279d3d..02eb7438 100644
--- a/2019/02/25/machine learning/clawler/clawler-6/index.html	
+++ b/2019/02/25/machine learning/clawler/clawler-6/index.html	
@@ -790,7 +790,7 @@ <h4 id="等待条件以及其含义"><a href="#等待条件以及其含义" clas
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2019/10/18/using/middleware/nginx-3/index.html b/2019/10/18/using/middleware/nginx-3/index.html
index 5f7b93a1..c1a44ace 100644
--- a/2019/10/18/using/middleware/nginx-3/index.html
+++ b/2019/10/18/using/middleware/nginx-3/index.html
@@ -733,7 +733,7 @@ <h3 id="配置说明"><a href="#配置说明" class="headerlink" title="配置
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2019/12/28/jenkins-1/index.html b/2019/12/28/jenkins-1/index.html
index c2361c73..6a817bdc 100644
--- a/2019/12/28/jenkins-1/index.html
+++ b/2019/12/28/jenkins-1/index.html
@@ -737,7 +737,7 @@ <h3 id="jenkins的使用"><a href="#jenkins的使用" class="headerlink" title="
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2020/01/08/push2maven/index.html b/2020/01/08/push2maven/index.html
index 8cad9a2d..60628df1 100644
--- a/2020/01/08/push2maven/index.html
+++ b/2020/01/08/push2maven/index.html
@@ -743,7 +743,7 @@ <h2 id="记录"><a href="#记录" class="headerlink" title="记录"></a>记录</
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2020/01/15/pythonwithc-1/index.html b/2020/01/15/pythonwithc-1/index.html
index d5333bc2..8a34b97b 100644
--- a/2020/01/15/pythonwithc-1/index.html
+++ b/2020/01/15/pythonwithc-1/index.html
@@ -714,7 +714,7 @@ <h3 id="python使用c-编译后的dll文件"><a href="#python使用c-编译后
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/2020/03/29/git-using/index.html b/2020/03/29/git-using/index.html
index e09d932a..3ae8863e 100644
--- a/2020/03/29/git-using/index.html
+++ b/2020/03/29/git-using/index.html
@@ -88,7 +88,7 @@
 
 
 
-  <meta name="keywords" content="git,CI/CD," />
+  <meta name="keywords" content="CI/CD,git," />
 
 
 
@@ -109,8 +109,8 @@
 <meta property="article:published_time" content="2020-03-29T09:46:42.000Z">
 <meta property="article:modified_time" content="2023-02-26T09:45:06.085Z">
 <meta property="article:author" content="Bohan Zhang">
-<meta property="article:tag" content="git">
 <meta property="article:tag" content="CI&#x2F;CD">
+<meta property="article:tag" content="git">
 <meta name="twitter:card" content="summary">
 
 
@@ -450,10 +450,10 @@ <h3 id="在centos下搭建本地git"><a href="#在centos下搭建本地git" clas
       
         <div class="post-tags">
           
-            <a href="/tags/git/" rel="tag"># git</a>
-          
             <a href="/tags/CI-CD/" rel="tag"># CI/CD</a>
           
+            <a href="/tags/git/" rel="tag"># git</a>
+          
         </div>
       
 
@@ -715,7 +715,7 @@ <h3 id="在centos下搭建本地git"><a href="#在centos下搭建本地git" clas
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git "a/2023/02/26/springboot\346\272\220\347\240\201\346\216\242\346\236\220/index.html" "b/2023/02/26/springboot\346\272\220\347\240\201\346\216\242\346\236\220/index.html"
index 2b6a316f..c51f6783 100644
--- "a/2023/02/26/springboot\346\272\220\347\240\201\346\216\242\346\236\220/index.html"
+++ "b/2023/02/26/springboot\346\272\220\347\240\201\346\216\242\346\236\220/index.html"
@@ -764,7 +764,7 @@ <h3 id="整理"><a href="#整理" class="headerlink" title="整理"></a>整理</
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git "a/2023/02/26/web\346\224\273\345\207\273\346\226\271\345\274\217\347\233\270\345\205\263\347\237\245\350\257\206\347\256\200\344\273\213\344\273\245\345\217\212Burpsuite\345\267\245\345\205\267\347\232\204\344\275\277\347\224\250/index.html" "b/2023/02/26/web\346\224\273\345\207\273\346\226\271\345\274\217\347\233\270\345\205\263\347\237\245\350\257\206\347\256\200\344\273\213\344\273\245\345\217\212Burpsuite\345\267\245\345\205\267\347\232\204\344\275\277\347\224\250/index.html"
index a679af45..41b2911b 100644
--- "a/2023/02/26/web\346\224\273\345\207\273\346\226\271\345\274\217\347\233\270\345\205\263\347\237\245\350\257\206\347\256\200\344\273\213\344\273\245\345\217\212Burpsuite\345\267\245\345\205\267\347\232\204\344\275\277\347\224\250/index.html"
+++ "b/2023/02/26/web\346\224\273\345\207\273\346\226\271\345\274\217\347\233\270\345\205\263\347\237\245\350\257\206\347\256\200\344\273\213\344\273\245\345\217\212Burpsuite\345\267\245\345\205\267\347\232\204\344\275\277\347\224\250/index.html"
@@ -702,7 +702,7 @@ <h3 id="Burpsuite工具使用"><a href="#Burpsuite工具使用" class="headerlin
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git "a/2023/02/26/\351\242\206\345\237\237\351\251\261\345\212\250\350\256\276\350\256\241-\346\266\210\345\214\226\347\237\245\350\257\206/index.html" "b/2023/02/26/\351\242\206\345\237\237\351\251\261\345\212\250\350\256\276\350\256\241-\346\266\210\345\214\226\347\237\245\350\257\206/index.html"
index 454707f0..f72dbeef 100644
--- "a/2023/02/26/\351\242\206\345\237\237\351\251\261\345\212\250\350\256\276\350\256\241-\346\266\210\345\214\226\347\237\245\350\257\206/index.html"
+++ "b/2023/02/26/\351\242\206\345\237\237\351\251\261\345\212\250\350\256\276\350\256\241-\346\266\210\345\214\226\347\237\245\350\257\206/index.html"
@@ -703,7 +703,7 @@ <h4 id="深层模型"><a href="#深层模型" class="headerlink" title="深层
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git "a/2023/06/17/\344\270\213\351\246\206\345\255\220\350\256\260\345\275\225/index.html" "b/2023/06/17/\344\270\213\351\246\206\345\255\220\350\256\260\345\275\225/index.html"
index 641e056d..0a4dbc67 100644
--- "a/2023/06/17/\344\270\213\351\246\206\345\255\220\350\256\260\345\275\225/index.html"
+++ "b/2023/06/17/\344\270\213\351\246\206\345\255\220\350\256\260\345\275\225/index.html"
@@ -681,7 +681,7 @@ <h1 class="post-title" itemprop="name headline">下馆子记录</h1>
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/about/index.html b/about/index.html
index 9a44322c..b50d3358 100644
--- a/about/index.html
+++ b/about/index.html
@@ -596,7 +596,7 @@ <h1 id="致谢"><a href="#致谢" class="headerlink" title="致谢"></a>致谢</
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/archives/2018/08/index.html b/archives/2018/08/index.html
index 1d2a9860..a937527f 100644
--- a/archives/2018/08/index.html
+++ b/archives/2018/08/index.html
@@ -897,7 +897,7 @@ <h2 class="post-title">
 
 
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index 990d119b..5dc6a575 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git a/archives/2020/index.html b/archives/2020/index.html
index 8a0d33e2..c04298a1 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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index 147f4120..67762d15 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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index 967052a5..9e3ddcec 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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index aa1ed3bf..c55fa412 100644
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@@ -907,7 +907,7 @@ <h2 class="post-title">
 
 
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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index 3a2e5115..377ae3fe 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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index 9c987581..3afced43 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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index a9d42602..46ad290b 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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index 8c488fed..ceb921dd 100644
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@@ -415,9 +415,9 @@ <h2 class="post-title">
 
       <h2 class="post-title">
         
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+            <a class="post-title-link" href="/2018/09/11/using/python/framework/pyqt-1/" itemprop="url">
               
-                <span itemprop="name">PyQT学习记录（二）</span>
+                <span itemprop="name">PyQt学习记录（一） -- 初识PyQt</span>
               
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index 3080f4c1..24049374 100644
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@@ -1,5 +1,9 @@
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 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
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-    <loc>http://132.232.42.89/2018/08/28/theory/ccna/ccna-3/</loc>
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-    <loc>http://132.232.42.89/2018/09/27/theory/algorithm/points_bookies/</loc>
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   <url>
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   </url>
   <url>
-    <loc>http://132.232.42.89/2020/01/08/push2maven/</loc>
+    <loc>http://132.232.42.89/2020/01/15/pythonwithc-1/</loc>
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   <url>
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\ No newline at end of file
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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index 9a24ac58..30db7af3 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git a/categories/PyQt/index.html b/categories/PyQt/index.html
index d2831820..109282b0 100644
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-<meta property="og:url" content="http://132.232.42.89/categories/PyQT/index.html">
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@@ -138,13 +138,13 @@
 
 
 
-  <link rel="canonical" href="http://132.232.42.89/categories/PyQT/"/>
+  <link rel="canonical" href="http://132.232.42.89/categories/PyQt/"/>
 
 
 
 
 
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-                <span itemprop="name">PyQT学习记录（二）</span>
+                <span itemprop="name">PyQt学习记录（一） -- 初识PyQt</span>
               
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index f0753e31..402c5e11 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/categories/net/index.html b/categories/net/index.html
index db706e3e..afb7fb0f 100644
--- a/categories/net/index.html
+++ b/categories/net/index.html
@@ -710,7 +710,7 @@ <h2 class="post-title">
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git a/categories/probability-theory/index.html b/categories/probability-theory/index.html
index 39b6b589..42c27d40 100644
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+++ b/categories/probability-theory/index.html
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 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git a/categories/python/index.html b/categories/python/index.html
index 2580253f..234f2b12 100644
--- a/categories/python/index.html
+++ b/categories/python/index.html
@@ -542,7 +542,7 @@ <h2 class="post-title">
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git a/categories/regular/index.html b/categories/regular/index.html
index 4c193c72..b1d32cea 100644
--- a/categories/regular/index.html
+++ b/categories/regular/index.html
@@ -570,7 +570,7 @@ <h2 class="post-title">
 
 
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-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/categories/sklearn/index.html b/categories/sklearn/index.html
index 91368ce3..ddeaadc7 100644
--- a/categories/sklearn/index.html
+++ b/categories/sklearn/index.html
@@ -542,7 +542,7 @@ <h2 class="post-title">
 
 
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-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git a/categories/springboot/index.html b/categories/springboot/index.html
index 358f3754..331b2d3b 100644
--- a/categories/springboot/index.html
+++ b/categories/springboot/index.html
@@ -542,7 +542,7 @@ <h2 class="post-title">
 
 
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-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git "a/categories/\345\220\203\345\226\235\347\216\251\344\271\220/index.html" "b/categories/\345\220\203\345\226\235\347\216\251\344\271\220/index.html"
index abf3eb1b..00ec73f9 100644
--- "a/categories/\345\220\203\345\226\235\347\216\251\344\271\220/index.html"
+++ "b/categories/\345\220\203\345\226\235\347\216\251\344\271\220/index.html"
@@ -542,7 +542,7 @@ <h2 class="post-title">
 
 
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-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/css/main.css b/css/main.css
index a879475b..1bd3a407 100644
--- a/css/main.css
+++ b/css/main.css
@@ -1883,7 +1883,7 @@ pre .javascript .function {
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diff --git a/index.html b/index.html
index 6336c01e..258f0004 100644
--- a/index.html
+++ b/index.html
@@ -2087,7 +2087,7 @@ <h1 class="post-title" itemprop="name headline">
 
 
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-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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index 1df84eba..135b76d8 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/page/3/index.html b/page/3/index.html
index 924dad00..365d000b 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/page/4/index.html b/page/4/index.html
index c0cf2d07..01b67d37 100644
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-              <time title="更新于" itemprop="dateModified" datetime="2023-02-26T17:45:06+08:00">
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+              <time title="更新于" itemprop="dateModified" datetime="2023-08-10T22:04:53+08:00">
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@@ -2102,7 +2102,7 @@ <h1 class="post-title" itemprop="name headline">
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
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index b7d39303..9dc8bbe0 100644
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@@ -498,7 +498,7 @@ <h1 class="post-title" itemprop="name headline">
         
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-                <a class="post-title-link" href="/2018/09/11/using/python/framework/pyqt-1/" itemprop="url">PyQt学习记录（一） -- 初识PyQt</a></h1>
+                <a class="post-title-link" href="/2018/09/11/using/python/framework/pyqt-2/" itemprop="url">PyQT学习记录（二）</a></h1>
         
 
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@@ -526,8 +526,8 @@ <h1 class="post-title" itemprop="name headline">
               
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-              <time title="更新于" itemprop="dateModified" datetime="2023-06-18T00:08:58+08:00">
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@@ -545,8 +545,8 @@ <h1 class="post-title" itemprop="name headline">
               
               
                 <span itemprop="about" itemscope itemtype="http://schema.org/Thing">
-                  <a href="/categories/PyQt/" itemprop="url" rel="index">
-                    <span itemprop="name">PyQt</span>
+                  <a href="/categories/PyQT/" itemprop="url" rel="index">
+                    <span itemprop="name">PyQT</span>
                   </a>
                 </span>
 
@@ -584,11 +584,14 @@ <h1 class="post-title" itemprop="name headline">
       
         
           
-          PyQt介绍&emsp;&emsp;PyQt5是一套Python绑定Digia QT5应用的框架。它可用于Python 2和3。本教程使用Python 3。Qt库是最强大的GUI库之一。PyQt5的官方网站http://www.riverbankcomputing.co.uk/news。&emsp;
+          PyQt5 程序基础解析1234import sysimport time from PyQt5.QtCore import *from PyQt5.QtGui import * 
+
+导入sys模块，为了访问在sys.argv列cd cd 表中的那些命令行参数  
+导入time模块，使用time.s
           ...
           <!--noindex-->
           <div class="post-button text-center">
-            <a class="btn" href="/2018/09/11/using/python/framework/pyqt-1/#more" rel="contents">
+            <a class="btn" href="/2018/09/11/using/python/framework/pyqt-2/#more" rel="contents">
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-    <link itemprop="mainEntityOfPage" href="http://132.232.42.89/2018/09/11/using/python/framework/pyqt-2/">
+    <link itemprop="mainEntityOfPage" href="http://132.232.42.89/2018/09/11/using/python/framework/pyqt-1/">
 
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@@ -657,7 +660,7 @@ <h1 class="post-title" itemprop="name headline">
         
           <h1 class="post-title" itemprop="name headline">
                 
-                <a class="post-title-link" href="/2018/09/11/using/python/framework/pyqt-2/" itemprop="url">PyQT学习记录（二）</a></h1>
+                <a class="post-title-link" href="/2018/09/11/using/python/framework/pyqt-1/" itemprop="url">PyQt学习记录（一） -- 初识PyQt</a></h1>
         
 
         <div class="post-meta">
@@ -685,8 +688,8 @@ <h1 class="post-title" itemprop="name headline">
               
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-              <time title="更新于" itemprop="dateModified" datetime="2023-02-26T17:45:06+08:00">
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@@ -704,8 +707,8 @@ <h1 class="post-title" itemprop="name headline">
               
               
                 <span itemprop="about" itemscope itemtype="http://schema.org/Thing">
-                  <a href="/categories/PyQT/" itemprop="url" rel="index">
-                    <span itemprop="name">PyQT</span>
+                  <a href="/categories/PyQt/" itemprop="url" rel="index">
+                    <span itemprop="name">PyQt</span>
                   </a>
                 </span>
 
@@ -743,14 +746,11 @@ <h1 class="post-title" itemprop="name headline">
       
         
           
-          PyQt5 程序基础解析1234import sysimport time from PyQt5.QtCore import *from PyQt5.QtGui import * 
-
-导入sys模块，为了访问在sys.argv列cd cd 表中的那些命令行参数  
-导入time模块，使用time.s
+          PyQt介绍&emsp;&emsp;PyQt5是一套Python绑定Digia QT5应用的框架。它可用于Python 2和3。本教程使用Python 3。Qt库是最强大的GUI库之一。PyQt5的官方网站http://www.riverbankcomputing.co.uk/news。&emsp;
           ...
           <!--noindex-->
           <div class="post-button text-center">
-            <a class="btn" href="/2018/09/11/using/python/framework/pyqt-2/#more" rel="contents">
+            <a class="btn" href="/2018/09/11/using/python/framework/pyqt-1/#more" rel="contents">
               阅读全文 &raquo;
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           </div>
@@ -2108,7 +2108,7 @@ <h1 class="post-title" itemprop="name headline">
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/page/6/index.html b/page/6/index.html
index d1752950..f59eec63 100644
--- a/page/6/index.html
+++ b/page/6/index.html
@@ -1799,7 +1799,7 @@ <h1 class="post-title" itemprop="name headline">
 
 
 <div class="footer-custom">
-	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-1</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
 </div>
 
  
diff --git a/search.xml b/search.xml
index 91e02c6a..33589896 100644
--- a/search.xml
+++ b/search.xml
@@ -1,28 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <search>
-  <entry>
-    <title>git本地仓库搭建</title>
-    <url>/2020/03/29/git-using/</url>
-    <content><![CDATA[<h3 id="在centos下搭建本地git"><a href="#在centos下搭建本地git" class="headerlink" title="在centos下搭建本地git"></a>在centos下搭建本地git</h3><ol>
-<li>安装git<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">yum install git</span><br></pre></td></tr></table></figure></li>
-<li>初始化仓库 <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">git init --bare cloud-eureka.git</span><br></pre></td></tr></table></figure>
- 在当前目录下创建cloud-eureka.git文件夹</li>
-<li>创建git用户用于git连接<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">#添加用户组git</span></span><br><span class="line">groupadd git</span><br><span class="line"><span class="comment">#添加用户git</span></span><br><span class="line">useradd git -g git -p password</span><br></pre></td></tr></table></figure></li>
-<li>配置公钥 <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">cd</span> ~/.ssh</span><br><span class="line"><span class="comment">#如果没有xxx.ras或者xxx.pub文件，生成一下：</span></span><br><span class="line">ssh-keygen -t rsa</span><br><span class="line">su git</span><br><span class="line"><span class="built_in">cd</span> /home/git  </span><br><span class="line"><span class="built_in">ls</span> -a  </span><br><span class="line"><span class="comment">#首先确认是否有ssh密钥：若有.ssh文件夹，进入查看是否有authorized_keys文件，如果都没有</span></span><br><span class="line"><span class="comment">#创建.ssh文件夹</span></span><br><span class="line"><span class="built_in">mkdir</span> .ssh</span><br><span class="line"><span class="comment">#创建authorized_keys文件：</span></span><br><span class="line"><span class="built_in">touch</span> authorized_keys</span><br><span class="line"><span class="comment">#将登录电脑的公钥填写到authorized_keys，即可免密</span></span><br></pre></td></tr></table></figure></li>
-<li>禁用git的普通shell<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"> <span class="comment">#禁用普通的bash</span></span><br><span class="line">vim /etc/passwd</span><br></pre></td></tr></table></figure>
-<figure class="highlight vim"><table><tr><td class="code"><pre><span class="line">#修改</span><br><span class="line"> gi<span class="variable">t:x</span>:<span class="number">1001</span>:<span class="number">1001</span>::/home/git:/bin/bash</span><br><span class="line">#为</span><br><span class="line"> gi<span class="variable">t:x</span>:<span class="number">1001</span>:<span class="number">1001</span>::/home/git:/usr/bin/git-<span class="keyword">shell</span></span><br></pre></td></tr></table></figure></li>
-<li>修改远程访问权限<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">#在git项目目录下</span></span><br><span class="line"><span class="built_in">chown</span> -R git:git cloud-eureka.git</span><br></pre></td></tr></table></figure></li>
-<li>访问项目<br> git@192.168.226.130:/opt/project/cloud-eureka.git </li>
-</ol>
-]]></content>
-      <categories>
-        <category>git</category>
-      </categories>
-      <tags>
-        <tag>git</tag>
-        <tag>CI/CD</tag>
-      </tags>
-  </entry>
   <entry>
     <title>jenkins的安装使用</title>
     <url>/2019/12/28/jenkins-1/</url>
@@ -62,23 +39,26 @@
       </tags>
   </entry>
   <entry>
-    <title>python通过boost.python使用c/c++</title>
-    <url>/2020/01/15/pythonwithc-1/</url>
-    <content><![CDATA[<h3 id="安装boost环境"><a href="#安装boost环境" class="headerlink" title="安装boost环境"></a>安装boost环境</h3><p><a href="https://www.boost.org/">https://www.boost.org/</a>下载，解压设置环境变量即可在c/c++中日常使用<br>但是对于boost.python来说需要对boost进行编译  </p>
-<p>编写user-config.jam文件，设置python目录、链接文件目录、头文件目录，位于c:/users/用户/user-config.jam  </p>
-<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">import toolset : using ;</span><br><span class="line">using python</span><br><span class="line">: 3.7</span><br><span class="line">: D:/Applications/python/python37/python.exe  </span><br><span class="line">: D:/Applications/python/python37/include</span><br><span class="line">: D:/Applications/python/python37/libs</span><br><span class="line">: &lt;toolset&gt;gcc</span><br><span class="line">;</span><br></pre></td></tr></table></figure>
-<figure class="highlight cmd"><table><tr><td class="code"><pre><span class="line">bootstrap.bat gcc  #生成b2.exe等文件</span><br><span class="line">b2 --with-python --toolset=gcc architecture=x86 address-model=<span class="number">64</span> link=shared #在stage/lib下生成boost.python的对应Python版本的dll和dll.a文件</span><br></pre></td></tr></table></figure>
-<h3 id="编写并编译c-程序"><a href="#编写并编译c-程序" class="headerlink" title="编写并编译c++程序"></a>编写并编译c++程序</h3><p>使用boost.python导出需要使用的c++模块，使用说明见<a href="https://wiki.python.org/moin/boost.python/module">https://wiki.python.org/moin/boost.python/module</a><br>需要注意的是，BOOST_PYTHON_MODULE(my_module)中的my_module必须和文件名相同<br>编译c++程序生成dll文件</p>
-<h3 id="python使用c-编译后的dll文件"><a href="#python使用c-编译后的dll文件" class="headerlink" title="python使用c++编译后的dll文件"></a>python使用c++编译后的dll文件</h3><p>将使用boost.python的dll文件改名为pyd（python的链接库文件）<br>在Python中添加路径（可以使用sys.path.append或者复制到python执行目录下） ，需要注意，除了添加.pyd文件之外，还需要添加 boost.python的对应Python版本的dll文件  </p>
-<figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="keyword">import</span> my_module</span><br></pre></td></tr></table></figure>
+    <title>git本地仓库搭建</title>
+    <url>/2020/03/29/git-using/</url>
+    <content><![CDATA[<h3 id="在centos下搭建本地git"><a href="#在centos下搭建本地git" class="headerlink" title="在centos下搭建本地git"></a>在centos下搭建本地git</h3><ol>
+<li>安装git<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">yum install git</span><br></pre></td></tr></table></figure></li>
+<li>初始化仓库 <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">git init --bare cloud-eureka.git</span><br></pre></td></tr></table></figure>
+ 在当前目录下创建cloud-eureka.git文件夹</li>
+<li>创建git用户用于git连接<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">#添加用户组git</span></span><br><span class="line">groupadd git</span><br><span class="line"><span class="comment">#添加用户git</span></span><br><span class="line">useradd git -g git -p password</span><br></pre></td></tr></table></figure></li>
+<li>配置公钥 <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">cd</span> ~/.ssh</span><br><span class="line"><span class="comment">#如果没有xxx.ras或者xxx.pub文件，生成一下：</span></span><br><span class="line">ssh-keygen -t rsa</span><br><span class="line">su git</span><br><span class="line"><span class="built_in">cd</span> /home/git  </span><br><span class="line"><span class="built_in">ls</span> -a  </span><br><span class="line"><span class="comment">#首先确认是否有ssh密钥：若有.ssh文件夹，进入查看是否有authorized_keys文件，如果都没有</span></span><br><span class="line"><span class="comment">#创建.ssh文件夹</span></span><br><span class="line"><span class="built_in">mkdir</span> .ssh</span><br><span class="line"><span class="comment">#创建authorized_keys文件：</span></span><br><span class="line"><span class="built_in">touch</span> authorized_keys</span><br><span class="line"><span class="comment">#将登录电脑的公钥填写到authorized_keys，即可免密</span></span><br></pre></td></tr></table></figure></li>
+<li>禁用git的普通shell<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"> <span class="comment">#禁用普通的bash</span></span><br><span class="line">vim /etc/passwd</span><br></pre></td></tr></table></figure>
+<figure class="highlight vim"><table><tr><td class="code"><pre><span class="line">#修改</span><br><span class="line"> gi<span class="variable">t:x</span>:<span class="number">1001</span>:<span class="number">1001</span>::/home/git:/bin/bash</span><br><span class="line">#为</span><br><span class="line"> gi<span class="variable">t:x</span>:<span class="number">1001</span>:<span class="number">1001</span>::/home/git:/usr/bin/git-<span class="keyword">shell</span></span><br></pre></td></tr></table></figure></li>
+<li>修改远程访问权限<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">#在git项目目录下</span></span><br><span class="line"><span class="built_in">chown</span> -R git:git cloud-eureka.git</span><br></pre></td></tr></table></figure></li>
+<li>访问项目<br> git@192.168.226.130:/opt/project/cloud-eureka.git </li>
+</ol>
 ]]></content>
       <categories>
-        <category>c/c++</category>
+        <category>git</category>
       </categories>
       <tags>
-        <tag>python</tag>
-        <tag>c/c++</tag>
-        <tag>boost</tag>
+        <tag>CI/CD</tag>
+        <tag>git</tag>
       </tags>
   </entry>
   <entry>
@@ -131,53 +111,23 @@
       </tags>
   </entry>
   <entry>
-    <title>web攻击方式相关知识简介以及Burpsuite工具的使用</title>
-    <url>/2023/02/26/web%E6%94%BB%E5%87%BB%E6%96%B9%E5%BC%8F%E7%9B%B8%E5%85%B3%E7%9F%A5%E8%AF%86%E7%AE%80%E4%BB%8B%E4%BB%A5%E5%8F%8ABurpsuite%E5%B7%A5%E5%85%B7%E7%9A%84%E4%BD%BF%E7%94%A8/</url>
-    <content><![CDATA[<blockquote>
-<p><strong>声明：本文仅限学习研究讨论，切忌做非法乱纪之事</strong></p>
-</blockquote>
-<h2 id="常见名词及其解释"><a href="#常见名词及其解释" class="headerlink" title="常见名词及其解释"></a>常见名词及其解释</h2><ol>
-<li><p>渗透</p>
-<p>渗透测试（Penetration Testing）是由具备高技能和高素质的安全服务人员发起、并模拟常见黑客所使用的攻击手段对目标系统进行模拟入侵。</p>
-<p>渗透测试服务的目的在于充分挖掘和暴露系统的弱点，从而让管理人员了解其系统所面临的威胁。</p>
-<p>渗透测试工作往往作为风险评估的一个重要环节，为风险评估提供重要的原始参考数据。</p>
-</li>
-<li><p>提权<br>提权就是通过获得低权限用户再通过漏洞获得最高权限的过程. 假如当你得到一个 系统用户,但是有一些事情你做不了,你就想要怎么才可以有那种权限呢?你把的这个用 户的权利通过漏洞变高的过程就叫提权.</p>
-</li>
-<li><p>0day <a href="https://zhuanlan.zhihu.com/p/30044629">https://zhuanlan.zhihu.com/p/30044629</a><br>0day在网络安全界通常是指没有补丁的漏洞利用程序.提供该利用程序的人通常是该漏洞的首发者或是第一个公开该漏洞利用细节的人。</p>
-</li>
-</ol>
-<h2 id="一些简单的攻击方式相关知识简介"><a href="#一些简单的攻击方式相关知识简介" class="headerlink" title="一些简单的攻击方式相关知识简介"></a>一些简单的攻击方式相关知识简介</h2><p><a href="http://image.zhangbohan.com.cn/pic/md/学习方向.jpg"><img src="https://www.zhangbohan.com.cn/images/%E5%AD%A6%E4%B9%A0%E6%96%B9%E5%90%91.jpg" alt="学习方向"></a></p>
-<p>这里介绍几种最基础的web攻击方式</p>
-<h4 id="XSS注入"><a href="#XSS注入" class="headerlink" title="XSS注入"></a>XSS注入</h4><p><a href="https://www.freebuf.com/vuls/334263.html">https://www.freebuf.com/vuls/334263.html</a></p>
-<h4 id="拒接服务攻击"><a href="#拒接服务攻击" class="headerlink" title="拒接服务攻击"></a>拒接服务攻击</h4><p>可以这么理解，凡是能导致合法用户不能够访问正常网络服务的行为都算是拒绝服务攻击。 也就是说拒绝服务攻击的目的非常明确，就是要阻止合法用户对正常网络资源的访问，从而 达成攻击者不可告人的目的。 虽然同样是拒绝服务攻击， 但是 DDOS 和 DOS 还是有所不同， DDOS 的攻击策略侧重于通过很多“僵尸主机”（被攻击者入侵过或可间接利用的主机）向 受害主机发送大量看似合法的网络包，从而造成网络阻塞或服务器资源耗尽而导致拒绝服 务，分布式拒绝服务攻击一旦被实施，攻击网络包就会犹如洪水般涌向受害主机，从而把合 法用户的网络包淹没，导致合法用户无法正常访问服务器的网络资源，因此，拒绝服务攻击 又被称之为 “洪水式攻击”</p>
-<h5 id="DOS攻击、DDOS攻击、CC攻击"><a href="#DOS攻击、DDOS攻击、CC攻击" class="headerlink" title="DOS攻击、DDOS攻击、CC攻击"></a>DOS攻击、DDOS攻击、CC攻击</h5><p><a href="https://www.cloudflare.com/zh-cn/learning/ddos/what-is-a-ddos-attack/">https://www.cloudflare.com/zh-cn/learning/ddos/what-is-a-ddos-attack/</a></p>
-<h5 id="zip炸弹"><a href="#zip炸弹" class="headerlink" title="zip炸弹"></a>zip炸弹</h5><p><a href="https://www.cntonan.com/pc/computer/show-8-854-1.html">https://www.cntonan.com/pc/computer/show-8-854-1.html</a></p>
-<h5 id="ARP协议欺诈"><a href="#ARP协议欺诈" class="headerlink" title="ARP协议欺诈"></a>ARP协议欺诈</h5><p><a href="https://blog.csdn.net/weixin_46560512/article/details/123325604">https://blog.csdn.net/weixin_46560512/article/details/123325604</a></p>
-<h4 id="SQL注入"><a href="#SQL注入" class="headerlink" title="SQL注入"></a>SQL注入</h4><p><a href="https://blog.csdn.net/qq_44159028/article/details/114325805">https://blog.csdn.net/qq_44159028/article/details/114325805</a><br>随着B/S模式（Browser/Server，浏览器/服务器）应用开发的发展，使用这种模式编写应用程序的程序员也越来越多。但是由于这个行业的入门门槛不高，程序员的水平及经验也参差不齐，相当大一部分程序员在编写代码的时候，没有对用户输入数据的合法性进行判断，使应用程序存在安全隐患。用户可以提交一段数据库查询代码，根据程序返回的结果，获得某些他想得知的数据，这就是所谓的SQL Injection，即SQL注入。 例如:目标服务器的网页脚本(ASP或 PHP)与数据库的数据交换过程存在检测不够严格的漏洞,攻击者通过构建特殊代码暴出数据库信息,包括用户信息,管理员密码等敏感信息以入侵远程服务器的网站系统。</p>
-<h4 id="越权"><a href="#越权" class="headerlink" title="越权"></a>越权</h4><p> <a href="https://www.freebuf.com/vuls/313396.html">https://www.freebuf.com/vuls/313396.html</a></p>
-<p><strong>横向越权</strong>：攻击者尝试访问与他拥有相同权限的用户的资源</p>
-<p><strong>纵向越权</strong>：攻击者可以使用低权限的账户去使用高权限账户的功能。</p>
-<h4 id="CSRF攻击"><a href="#CSRF攻击" class="headerlink" title="CSRF攻击"></a>CSRF攻击</h4><p><a href="https://baijiahao.baidu.com/s?id=1727601372183126511&amp;wfr=spider&amp;for=pc">https://baijiahao.baidu.com/s?id=1727601372183126511&amp;wfr=spider&amp;for=pc</a></p>
-<h3 id="Burpsuite工具使用"><a href="#Burpsuite工具使用" class="headerlink" title="Burpsuite工具使用"></a>Burpsuite工具使用</h3><p><a href="https://www.jianshu.com/p/ee2ce74cb5e5">https://www.jianshu.com/p/ee2ce74cb5e5</a></p>
-]]></content>
-  </entry>
-  <entry>
-    <title>下馆子记录</title>
-    <url>/2023/06/17/%E4%B8%8B%E9%A6%86%E5%AD%90%E8%AE%B0%E5%BD%95/</url>
-    <content><![CDATA[<ol>
-<li>公司附近，不做评价了，有的吃就不错了：<br>大包间：龙船人鱼头泡饼·江湖菜(温泉店)、潇湘府(环保店)、潇湘楼(温泉店)<br>三结义烧鸽子·烧烤融合菜(温泉路店)<br>城都成串串香(创客小镇店)</li>
-<li>稍远一点：<br>小吊梨汤(融科店)：<br>环境真的好，在科资讯大厦，环境也非常棒，同楼层还有一家书店，有个音乐喷泉，设计都非常棒，排队等位置的时候可以看看书，环境如图 <center>
-     <img src="https://www.zhangbohan.com.cn/images/eating/rongke-bookshop.jpg" src="融科书店" />
-</center></li>
-<li>进城啦：<br> 丰泽园饭庄(王府商厦店)：<br>   味道很棒，不点太过分的菜品（葱烧海参之类的）的话价格也能接受的，和一般吃一顿价格高不了多少<br> 北平楼(牡丹园店)：<br> 味道不如丰泽园，烤鸭不错</li>
-</ol>
+    <title>python通过boost.python使用c/c++</title>
+    <url>/2020/01/15/pythonwithc-1/</url>
+    <content><![CDATA[<h3 id="安装boost环境"><a href="#安装boost环境" class="headerlink" title="安装boost环境"></a>安装boost环境</h3><p><a href="https://www.boost.org/">https://www.boost.org/</a>下载，解压设置环境变量即可在c/c++中日常使用<br>但是对于boost.python来说需要对boost进行编译  </p>
+<p>编写user-config.jam文件，设置python目录、链接文件目录、头文件目录，位于c:/users/用户/user-config.jam  </p>
+<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">import toolset : using ;</span><br><span class="line">using python</span><br><span class="line">: 3.7</span><br><span class="line">: D:/Applications/python/python37/python.exe  </span><br><span class="line">: D:/Applications/python/python37/include</span><br><span class="line">: D:/Applications/python/python37/libs</span><br><span class="line">: &lt;toolset&gt;gcc</span><br><span class="line">;</span><br></pre></td></tr></table></figure>
+<figure class="highlight cmd"><table><tr><td class="code"><pre><span class="line">bootstrap.bat gcc  #生成b2.exe等文件</span><br><span class="line">b2 --with-python --toolset=gcc architecture=x86 address-model=<span class="number">64</span> link=shared #在stage/lib下生成boost.python的对应Python版本的dll和dll.a文件</span><br></pre></td></tr></table></figure>
+<h3 id="编写并编译c-程序"><a href="#编写并编译c-程序" class="headerlink" title="编写并编译c++程序"></a>编写并编译c++程序</h3><p>使用boost.python导出需要使用的c++模块，使用说明见<a href="https://wiki.python.org/moin/boost.python/module">https://wiki.python.org/moin/boost.python/module</a><br>需要注意的是，BOOST_PYTHON_MODULE(my_module)中的my_module必须和文件名相同<br>编译c++程序生成dll文件</p>
+<h3 id="python使用c-编译后的dll文件"><a href="#python使用c-编译后的dll文件" class="headerlink" title="python使用c++编译后的dll文件"></a>python使用c++编译后的dll文件</h3><p>将使用boost.python的dll文件改名为pyd（python的链接库文件）<br>在Python中添加路径（可以使用sys.path.append或者复制到python执行目录下） ，需要注意，除了添加.pyd文件之外，还需要添加 boost.python的对应Python版本的dll文件  </p>
+<figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="keyword">import</span> my_module</span><br></pre></td></tr></table></figure>
 ]]></content>
       <categories>
-        <category>吃喝玩乐</category>
+        <category>c/c++</category>
       </categories>
       <tags>
-        <tag>吃喝玩乐</tag>
+        <tag>python</tag>
+        <tag>c/c++</tag>
+        <tag>boost</tag>
       </tags>
   </entry>
   <entry>
@@ -254,6 +204,56 @@
         <category>java</category>
       </categories>
   </entry>
+  <entry>
+    <title>web攻击方式相关知识简介以及Burpsuite工具的使用</title>
+    <url>/2023/02/26/web%E6%94%BB%E5%87%BB%E6%96%B9%E5%BC%8F%E7%9B%B8%E5%85%B3%E7%9F%A5%E8%AF%86%E7%AE%80%E4%BB%8B%E4%BB%A5%E5%8F%8ABurpsuite%E5%B7%A5%E5%85%B7%E7%9A%84%E4%BD%BF%E7%94%A8/</url>
+    <content><![CDATA[<blockquote>
+<p><strong>声明：本文仅限学习研究讨论，切忌做非法乱纪之事</strong></p>
+</blockquote>
+<h2 id="常见名词及其解释"><a href="#常见名词及其解释" class="headerlink" title="常见名词及其解释"></a>常见名词及其解释</h2><ol>
+<li><p>渗透</p>
+<p>渗透测试（Penetration Testing）是由具备高技能和高素质的安全服务人员发起、并模拟常见黑客所使用的攻击手段对目标系统进行模拟入侵。</p>
+<p>渗透测试服务的目的在于充分挖掘和暴露系统的弱点，从而让管理人员了解其系统所面临的威胁。</p>
+<p>渗透测试工作往往作为风险评估的一个重要环节，为风险评估提供重要的原始参考数据。</p>
+</li>
+<li><p>提权<br>提权就是通过获得低权限用户再通过漏洞获得最高权限的过程. 假如当你得到一个 系统用户,但是有一些事情你做不了,你就想要怎么才可以有那种权限呢?你把的这个用 户的权利通过漏洞变高的过程就叫提权.</p>
+</li>
+<li><p>0day <a href="https://zhuanlan.zhihu.com/p/30044629">https://zhuanlan.zhihu.com/p/30044629</a><br>0day在网络安全界通常是指没有补丁的漏洞利用程序.提供该利用程序的人通常是该漏洞的首发者或是第一个公开该漏洞利用细节的人。</p>
+</li>
+</ol>
+<h2 id="一些简单的攻击方式相关知识简介"><a href="#一些简单的攻击方式相关知识简介" class="headerlink" title="一些简单的攻击方式相关知识简介"></a>一些简单的攻击方式相关知识简介</h2><p><a href="http://image.zhangbohan.com.cn/pic/md/学习方向.jpg"><img src="https://www.zhangbohan.com.cn/images/%E5%AD%A6%E4%B9%A0%E6%96%B9%E5%90%91.jpg" alt="学习方向"></a></p>
+<p>这里介绍几种最基础的web攻击方式</p>
+<h4 id="XSS注入"><a href="#XSS注入" class="headerlink" title="XSS注入"></a>XSS注入</h4><p><a href="https://www.freebuf.com/vuls/334263.html">https://www.freebuf.com/vuls/334263.html</a></p>
+<h4 id="拒接服务攻击"><a href="#拒接服务攻击" class="headerlink" title="拒接服务攻击"></a>拒接服务攻击</h4><p>可以这么理解，凡是能导致合法用户不能够访问正常网络服务的行为都算是拒绝服务攻击。 也就是说拒绝服务攻击的目的非常明确，就是要阻止合法用户对正常网络资源的访问，从而 达成攻击者不可告人的目的。 虽然同样是拒绝服务攻击， 但是 DDOS 和 DOS 还是有所不同， DDOS 的攻击策略侧重于通过很多“僵尸主机”（被攻击者入侵过或可间接利用的主机）向 受害主机发送大量看似合法的网络包，从而造成网络阻塞或服务器资源耗尽而导致拒绝服 务，分布式拒绝服务攻击一旦被实施，攻击网络包就会犹如洪水般涌向受害主机，从而把合 法用户的网络包淹没，导致合法用户无法正常访问服务器的网络资源，因此，拒绝服务攻击 又被称之为 “洪水式攻击”</p>
+<h5 id="DOS攻击、DDOS攻击、CC攻击"><a href="#DOS攻击、DDOS攻击、CC攻击" class="headerlink" title="DOS攻击、DDOS攻击、CC攻击"></a>DOS攻击、DDOS攻击、CC攻击</h5><p><a href="https://www.cloudflare.com/zh-cn/learning/ddos/what-is-a-ddos-attack/">https://www.cloudflare.com/zh-cn/learning/ddos/what-is-a-ddos-attack/</a></p>
+<h5 id="zip炸弹"><a href="#zip炸弹" class="headerlink" title="zip炸弹"></a>zip炸弹</h5><p><a href="https://www.cntonan.com/pc/computer/show-8-854-1.html">https://www.cntonan.com/pc/computer/show-8-854-1.html</a></p>
+<h5 id="ARP协议欺诈"><a href="#ARP协议欺诈" class="headerlink" title="ARP协议欺诈"></a>ARP协议欺诈</h5><p><a href="https://blog.csdn.net/weixin_46560512/article/details/123325604">https://blog.csdn.net/weixin_46560512/article/details/123325604</a></p>
+<h4 id="SQL注入"><a href="#SQL注入" class="headerlink" title="SQL注入"></a>SQL注入</h4><p><a href="https://blog.csdn.net/qq_44159028/article/details/114325805">https://blog.csdn.net/qq_44159028/article/details/114325805</a><br>随着B/S模式（Browser/Server，浏览器/服务器）应用开发的发展，使用这种模式编写应用程序的程序员也越来越多。但是由于这个行业的入门门槛不高，程序员的水平及经验也参差不齐，相当大一部分程序员在编写代码的时候，没有对用户输入数据的合法性进行判断，使应用程序存在安全隐患。用户可以提交一段数据库查询代码，根据程序返回的结果，获得某些他想得知的数据，这就是所谓的SQL Injection，即SQL注入。 例如:目标服务器的网页脚本(ASP或 PHP)与数据库的数据交换过程存在检测不够严格的漏洞,攻击者通过构建特殊代码暴出数据库信息,包括用户信息,管理员密码等敏感信息以入侵远程服务器的网站系统。</p>
+<h4 id="越权"><a href="#越权" class="headerlink" title="越权"></a>越权</h4><p> <a href="https://www.freebuf.com/vuls/313396.html">https://www.freebuf.com/vuls/313396.html</a></p>
+<p><strong>横向越权</strong>：攻击者尝试访问与他拥有相同权限的用户的资源</p>
+<p><strong>纵向越权</strong>：攻击者可以使用低权限的账户去使用高权限账户的功能。</p>
+<h4 id="CSRF攻击"><a href="#CSRF攻击" class="headerlink" title="CSRF攻击"></a>CSRF攻击</h4><p><a href="https://baijiahao.baidu.com/s?id=1727601372183126511&amp;wfr=spider&amp;for=pc">https://baijiahao.baidu.com/s?id=1727601372183126511&amp;wfr=spider&amp;for=pc</a></p>
+<h3 id="Burpsuite工具使用"><a href="#Burpsuite工具使用" class="headerlink" title="Burpsuite工具使用"></a>Burpsuite工具使用</h3><p><a href="https://www.jianshu.com/p/ee2ce74cb5e5">https://www.jianshu.com/p/ee2ce74cb5e5</a></p>
+]]></content>
+  </entry>
+  <entry>
+    <title>下馆子记录</title>
+    <url>/2023/06/17/%E4%B8%8B%E9%A6%86%E5%AD%90%E8%AE%B0%E5%BD%95/</url>
+    <content><![CDATA[<ol>
+<li>公司附近，不做评价了，有的吃就不错了：<br>大包间：龙船人鱼头泡饼·江湖菜(温泉店)、潇湘府(环保店)、潇湘楼(温泉店)<br>三结义烧鸽子·烧烤融合菜(温泉路店)<br>城都成串串香(创客小镇店)</li>
+<li>稍远一点：<br>小吊梨汤(融科店)：<br>环境真的好，在科资讯大厦，环境也非常棒，同楼层还有一家书店，有个音乐喷泉，设计都非常棒，排队等位置的时候可以看看书，环境如图 <center>
+     <img src="https://www.zhangbohan.com.cn/images/eating/rongke-bookshop.jpg" src="融科书店" />
+</center></li>
+<li>进城啦：<br> 丰泽园饭庄(王府商厦店)：<br>   味道很棒，不点太过分的菜品（葱烧海参之类的）的话价格也能接受的，和一般吃一顿价格高不了多少<br> 北平楼(牡丹园店)：<br> 味道不如丰泽园，烤鸭不错</li>
+</ol>
+]]></content>
+      <categories>
+        <category>吃喝玩乐</category>
+      </categories>
+      <tags>
+        <tag>吃喝玩乐</tag>
+      </tags>
+  </entry>
   <entry>
     <title>领域驱动设计----消化知识</title>
     <url>/2023/02/26/%E9%A2%86%E5%9F%9F%E9%A9%B1%E5%8A%A8%E8%AE%BE%E8%AE%A1-%E6%B6%88%E5%8C%96%E7%9F%A5%E8%AF%86/</url>
@@ -583,254 +583,83 @@
       </tags>
   </entry>
   <entry>
-    <title>数据挖掘--爬虫--解析库</title>
-    <url>/2019/02/22/machine%20learning/clawler/clawler-4/</url>
-    <content><![CDATA[<h3 id="XPath"><a href="#XPath" class="headerlink" title="XPath"></a>XPath</h3><p>&emsp;&emsp;XPath，全程XML Path Language，是一门在XML文档中查找信息的语言，也适用于HTML文档的搜索<br>&emsp;&emsp;XPath<a href="http://www.w3school.com.cn/xpath/index.asp">用法</a> &emsp;&emsp; lxml库<a href="http://lxml.de/">用法</a></p>
-<h4 id="概览"><a href="#概览" class="headerlink" title="概览"></a>概览</h4><p>常用规则</p>
+    <title>数据挖掘--爬虫--Ajax数据爬取</title>
+    <url>/2019/02/22/machine%20learning/clawler/clawler-5/</url>
+    <content><![CDATA[<h3 id="Ajax"><a href="#Ajax" class="headerlink" title="Ajax"></a>Ajax</h3><p>&emsp;&emsp;Ajax，全程Asynchronous JavaScript and XML，即异步的JavaScript和XML，在保证页面不被刷新、页面链接不改变的情况下与服务器交换数据并更新部分网页的技术。</p>
+<h3 id="爬取今日头条街拍"><a href="#爬取今日头条街拍" class="headerlink" title="爬取今日头条街拍"></a>爬取今日头条街拍</h3><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="comment">#!/usr/bin/env python3</span></span><br><span class="line"><span class="comment"># -*- coding: utf-8 -*-</span></span><br><span class="line"><span class="string">&quot;&quot;&quot; </span></span><br><span class="line"><span class="string">@author zhangbohan.dell@gmail.com</span></span><br><span class="line"><span class="string">@function:</span></span><br><span class="line"><span class="string">@create 2019/2/25 11:12</span></span><br><span class="line"><span class="string">&quot;&quot;&quot;</span></span><br><span class="line"><span class="keyword">import</span> os</span><br><span class="line"><span class="keyword">from</span> hashlib <span class="keyword">import</span> md5</span><br><span class="line"><span class="keyword">from</span> multiprocessing.pool <span class="keyword">import</span> Pool</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> requests</span><br><span class="line"><span class="keyword">from</span> bs4 <span class="keyword">import</span> BeautifulSoup</span><br><span class="line"><span class="keyword">from</span> urllib.parse <span class="keyword">import</span> urlencode</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">get_page</span>(<span class="params">offset</span>):</span><br><span class="line">    params = &#123;</span><br><span class="line">        <span class="string">&#x27;aid&#x27;</span>: <span class="string">&#x27;24&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;app_name&#x27;</span>: <span class="string">&#x27;web_search&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;offset&#x27;</span>: offset,</span><br><span class="line">        <span class="string">&#x27;format&#x27;</span>: <span class="string">&#x27;json&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;keyword&#x27;</span>: <span class="string">&#x27;街拍&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;autoload&#x27;</span>: <span class="string">&#x27;true&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;count&#x27;</span>: <span class="string">&#x27;20&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;en_qc&#x27;</span>: <span class="string">&#x27;1&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;cur_tab&#x27;</span>: <span class="string">&#x27;1&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;from&#x27;</span>: <span class="string">&#x27;search_tab&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;pd&#x27;</span>: <span class="string">&#x27;syntheis&#x27;</span></span><br><span class="line">    &#125;</span><br><span class="line">    url = <span class="string">&#x27;https://www.toutiao.com/api/search/content/?&#x27;</span> + urlencode(params)</span><br><span class="line">    <span class="keyword">try</span>:</span><br><span class="line">        response = requests.get(url)</span><br><span class="line">        <span class="keyword">if</span> response.status_code == <span class="number">200</span>:</span><br><span class="line">            <span class="keyword">return</span> response.json()</span><br><span class="line">    <span class="keyword">except</span> requests.ConnectionError:</span><br><span class="line">        <span class="keyword">return</span> <span class="literal">None</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">get_image</span>(<span class="params">json</span>):</span><br><span class="line">    <span class="keyword">if</span> json.get(<span class="string">&#x27;data&#x27;</span>):</span><br><span class="line">        <span class="keyword">for</span> item <span class="keyword">in</span> json.get(<span class="string">&#x27;data&#x27;</span>):</span><br><span class="line">            title = item.get(<span class="string">&#x27;title&#x27;</span>)</span><br><span class="line">            images = item.get(<span class="string">&#x27;image_list&#x27;</span>)</span><br><span class="line">            <span class="keyword">for</span> image <span class="keyword">in</span> images:</span><br><span class="line">                <span class="keyword">yield</span> &#123;</span><br><span class="line">                    <span class="string">&#x27;image&#x27;</span>: image.get(<span class="string">&#x27;url&#x27;</span>),</span><br><span class="line">                    <span class="string">&#x27;title&#x27;</span>: title</span><br><span class="line">                &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">save_image</span>(<span class="params">item</span>):</span><br><span class="line">    <span class="keyword">if</span> <span class="keyword">not</span> os.path.exists(item.get(<span class="string">&#x27;title&#x27;</span>)):</span><br><span class="line">        os.mkdir(item.get(<span class="string">&#x27;title&#x27;</span>))</span><br><span class="line">    <span class="keyword">try</span>:</span><br><span class="line">        response = requests.get(item.get(<span class="string">&#x27;image&#x27;</span>))</span><br><span class="line">        <span class="keyword">if</span> response.status_code == <span class="number">200</span>:</span><br><span class="line">            file_path = <span class="string">&#x27;&#123;0&#125;/&#123;1&#125;.&#123;2&#125;&#x27;</span>.<span class="built_in">format</span>(item.get(<span class="string">&#x27;title&#x27;</span>), md5(response.content).hexdigest(), <span class="string">&#x27;jpg&#x27;</span>)</span><br><span class="line">            <span class="keyword">if</span> <span class="keyword">not</span> os.path.exists(file_path):</span><br><span class="line">                <span class="keyword">with</span> <span class="built_in">open</span>(file_path, <span class="string">&#x27;wb&#x27;</span>) <span class="keyword">as</span> f:</span><br><span class="line">                    f.write(response.content)</span><br><span class="line">            <span class="keyword">else</span>:</span><br><span class="line">                <span class="built_in">print</span>(<span class="string">&#x27;Already Downloaded&#x27;</span>, file_path)</span><br><span class="line">    <span class="keyword">except</span> requests.ConnectionError:</span><br><span class="line">        <span class="built_in">print</span>(<span class="string">&#x27;Failed to save Image&#x27;</span>)</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">main</span>(<span class="params">offset</span>):</span><br><span class="line">    json = get_page(offset)</span><br><span class="line">    <span class="keyword">for</span> item <span class="keyword">in</span> get_image(json):</span><br><span class="line">        <span class="built_in">print</span>(item)</span><br><span class="line">        save_image(item)</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">GROUP_START = <span class="number">1</span></span><br><span class="line">GROUP_END = <span class="number">20</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span> __name__ == <span class="string">&#x27;__main__&#x27;</span>:</span><br><span class="line">    pool = Pool()</span><br><span class="line">    groups = ([x * <span class="number">20</span> <span class="keyword">for</span> x <span class="keyword">in</span> <span class="built_in">range</span>(GROUP_START, GROUP_END + <span class="number">1</span>)])</span><br><span class="line">    pool.<span class="built_in">map</span>(main, groups)</span><br><span class="line">    pool.<span class="built_in">map</span>(main, groups)</span><br><span class="line">    pool.close()</span><br><span class="line">    pool.join()</span><br><span class="line"></span><br></pre></td></tr></table></figure>
+<h3 id="参考资料"><a href="#参考资料" class="headerlink" title="参考资料"></a>参考资料</h3><p><a href="http://www.cuiqingcai.com">崔庆才大佬</a>的《python3网络爬虫开发实战》</p>
+]]></content>
+      <categories>
+        <category>crawler</category>
+      </categories>
+      <tags>
+        <tag>python</tag>
+        <tag>web crawler</tag>
+        <tag>data mining</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>数据挖掘--爬虫--动态渲染页面爬取</title>
+    <url>/2019/02/25/machine%20learning/clawler/clawler-6/</url>
+    <content><![CDATA[<h3 id="selenium的使用"><a href="#selenium的使用" class="headerlink" title="selenium的使用"></a>selenium的使用</h3><p>&emsp;&emsp;<a href="https://selenium-python.readthedocs.io/">官方文档</a><br>&emsp;&emsp;selenium是一个自动化测试工具，利用它可以驱动浏览器执行特定的动作，还可以获取浏览器当前呈现页面的源码。  </p>
+<h4 id="等待条件以及其含义"><a href="#等待条件以及其含义" class="headerlink" title="等待条件以及其含义"></a>等待条件以及其含义</h4><p>&emsp;&emsp;<a href="https://selenium-python.readthedocs.io/api.html#module-selenium.webdriver.support.expected_conditions">官方文档</a></p>
+<figure class="highlight python"><table><tr><td class="code"><pre><span class="line">wait = WebDriverWait(browser,<span class="number">1</span>)</span><br><span class="line">wait.until(EC.presence_of_element_located((By.ID,<span class="string">&#x27;content_left&#x27;</span>)))</span><br><span class="line"><span class="comment">#until中的即为等待条件</span></span><br></pre></td></tr></table></figure>
 <div class="table-container">
 <table>
 <thead>
 <tr>
-<th>表达式</th>
-<th>描述</th>
+<th>等待条件</th>
+<th>含义</th>
 </tr>
 </thead>
 <tbody>
 <tr>
-<td>nodename</td>
-<td>选取此节点的所有子节点</td>
+<td>title_is</td>
+<td>标题是某内容</td>
 </tr>
 <tr>
-<td>/</td>
-<td>从当前节点选取直接子节点</td>
+<td>title_contains</td>
+<td>标题包含某内容</td>
 </tr>
 <tr>
-<td>//</td>
-<td>从当前节点选取子孙节点</td>
+<td>persence_of_element_localted</td>
+<td>节点加载出来，传入定位元素，如(By.ID,’p’)</td>
 </tr>
 <tr>
-<td>.</td>
-<td>选取当前节点</td>
+<td>visibility_of_element_localted</td>
+<td>节点可见，传入定位元素</td>
 </tr>
 <tr>
-<td>..</td>
-<td>选取当前节点的父节点</td>
+<td>visibility_of</td>
+<td>可见，传入节点对象</td>
 </tr>
 <tr>
-<td>@</td>
-<td>选取属性</td>
+<td>persence_of_all_element_localted</td>
+<td>所有节点加载出来</td>
 </tr>
-</tbody>
-</table>
-</div>
-<p>运算符以及介绍</p>
-<div class="table-container">
-<table>
-<thead>
 <tr>
-<th>运算符</th>
-<th>描述</th>
-<th>实例</th>
-<th>返回值</th>
+<td>text_to_be_present_in_element</td>
+<td>某个节点文本包含某文字</td>
 </tr>
-</thead>
-<tbody>
 <tr>
-<td>or</td>
-<td>或</td>
-<td></td>
+<td>text_to_be_present_in_element_value</td>
+<td>某个节点值包含某文字</td>
 </tr>
 <tr>
-<td>and</td>
-<td>与</td>
-<td></td>
+<td>frame_to_be_availiable_and_switch_to_it</td>
+<td>加载并切换</td>
 </tr>
 <tr>
-<td>mod</td>
-<td>取余</td>
-<td></td>
+<td>invisibility_of_element_located</td>
+<td>节点不可见</td>
 </tr>
 <tr>
-<td>\</td>
-<td></td>
-<td>计算两个节点集</td>
-<td>//book \</td>
-<td>//cd</td>
-<td>返回所有拥有book和cd元素的节点集</td>
+<td>element_to_be_clickable</td>
+<td>节点可点击</td>
 </tr>
 <tr>
-<td>+</td>
-<td>加法</td>
-</tr>
-<tr>
-<td>-</td>
-<td>减法</td>
-</tr>
-<tr>
-<td>*</td>
-<td>乘法</td>
-</tr>
-<tr>
-<td>div</td>
-<td>除法</td>
-</tr>
-<tr>
-<td>=</td>
-<td>等于</td>
-</tr>
-<tr>
-<td>!=</td>
-<td>不等于</td>
-</tr>
-<tr>
-<td>&lt;</td>
-<td>小于</td>
-</tr>
-<tr>
-<td>&gt;</td>
-<td>大于</td>
-</tr>
-<tr>
-<td>&gt;=</td>
-<td>大于等于</td>
-</tr>
-<tr>
-<td>&lt;=</td>
-<td>小于等</td>
-</tr>
-</tbody>
-</table>
-</div>
-<h3 id="Beautiful-soup"><a href="#Beautiful-soup" class="headerlink" title="Beautiful soup"></a>Beautiful soup</h3><p>&emsp;&emsp;Beautiful Soup就是Python的一个HTML或XML的解析库</p>
-<h4 id="解析器"><a href="#解析器" class="headerlink" title="解析器"></a>解析器</h4><p>Beautiful soup在解析时实际上依赖解析库，支持的解析库如下</p>
-<div class="table-container">
-<table>
-<thead>
-<tr>
-<th>解析器</th>
-<th>使用的方法</th>
-<th>优势</th>
-<th>劣势</th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td>Python标准库</td>
-<td>BeautifulSoup(markup,”html.parser”)</td>
-<td>Python内置标准库，执行速度适中，文档容错能力强</td>
-<td>Python2.7.3以及3.2.2之前的版本文档容错能力差</td>
-</tr>
-<tr>
-<td>lxml html解析器</td>
-<td>BeautifulSoup(markup,”lxml”)</td>
-<td>速度快，文档容错能力强</td>
-<td>需要c语言库</td>
-</tr>
-<tr>
-<td>lxml xml解析器</td>
-<td>BeautifulSoup(markup,”xml”)</td>
-<td>速度快，唯一支持xml的解析器</td>
-<td>需要c语言库</td>
-</tr>
-<tr>
-<td>html5lib</td>
-<td>BeautifulSoup(markup,”html5lib”)</td>
-<td>最好的容错性、以浏览器的方式解析文档、生成html5格式的文档</td>
-<td>速度慢、不依赖扩展</td>
-</tr>
-</tbody>
-</table>
-</div>
-<h3 id="puquery"><a href="#puquery" class="headerlink" title="puquery"></a>puquery</h3><p>&emsp;&emsp;获取元素方式和jquery类似</p>
-<h3 id="参考资料"><a href="#参考资料" class="headerlink" title="参考资料"></a>参考资料</h3><p><a href="http://www.cuiqingcai.com">崔庆才大佬</a>的《python3网络爬虫开发实战》</p>
-]]></content>
-      <categories>
-        <category>crawler</category>
-      </categories>
-      <tags>
-        <tag>python</tag>
-        <tag>web crawler</tag>
-        <tag>data mining</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>数据挖掘--爬虫--Ajax数据爬取</title>
-    <url>/2019/02/22/machine%20learning/clawler/clawler-5/</url>
-    <content><![CDATA[<h3 id="Ajax"><a href="#Ajax" class="headerlink" title="Ajax"></a>Ajax</h3><p>&emsp;&emsp;Ajax，全程Asynchronous JavaScript and XML，即异步的JavaScript和XML，在保证页面不被刷新、页面链接不改变的情况下与服务器交换数据并更新部分网页的技术。</p>
-<h3 id="爬取今日头条街拍"><a href="#爬取今日头条街拍" class="headerlink" title="爬取今日头条街拍"></a>爬取今日头条街拍</h3><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="comment">#!/usr/bin/env python3</span></span><br><span class="line"><span class="comment"># -*- coding: utf-8 -*-</span></span><br><span class="line"><span class="string">&quot;&quot;&quot; </span></span><br><span class="line"><span class="string">@author zhangbohan.dell@gmail.com</span></span><br><span class="line"><span class="string">@function:</span></span><br><span class="line"><span class="string">@create 2019/2/25 11:12</span></span><br><span class="line"><span class="string">&quot;&quot;&quot;</span></span><br><span class="line"><span class="keyword">import</span> os</span><br><span class="line"><span class="keyword">from</span> hashlib <span class="keyword">import</span> md5</span><br><span class="line"><span class="keyword">from</span> multiprocessing.pool <span class="keyword">import</span> Pool</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> requests</span><br><span class="line"><span class="keyword">from</span> bs4 <span class="keyword">import</span> BeautifulSoup</span><br><span class="line"><span class="keyword">from</span> urllib.parse <span class="keyword">import</span> urlencode</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">get_page</span>(<span class="params">offset</span>):</span><br><span class="line">    params = &#123;</span><br><span class="line">        <span class="string">&#x27;aid&#x27;</span>: <span class="string">&#x27;24&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;app_name&#x27;</span>: <span class="string">&#x27;web_search&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;offset&#x27;</span>: offset,</span><br><span class="line">        <span class="string">&#x27;format&#x27;</span>: <span class="string">&#x27;json&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;keyword&#x27;</span>: <span class="string">&#x27;街拍&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;autoload&#x27;</span>: <span class="string">&#x27;true&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;count&#x27;</span>: <span class="string">&#x27;20&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;en_qc&#x27;</span>: <span class="string">&#x27;1&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;cur_tab&#x27;</span>: <span class="string">&#x27;1&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;from&#x27;</span>: <span class="string">&#x27;search_tab&#x27;</span>,</span><br><span class="line">        <span class="string">&#x27;pd&#x27;</span>: <span class="string">&#x27;syntheis&#x27;</span></span><br><span class="line">    &#125;</span><br><span class="line">    url = <span class="string">&#x27;https://www.toutiao.com/api/search/content/?&#x27;</span> + urlencode(params)</span><br><span class="line">    <span class="keyword">try</span>:</span><br><span class="line">        response = requests.get(url)</span><br><span class="line">        <span class="keyword">if</span> response.status_code == <span class="number">200</span>:</span><br><span class="line">            <span class="keyword">return</span> response.json()</span><br><span class="line">    <span class="keyword">except</span> requests.ConnectionError:</span><br><span class="line">        <span class="keyword">return</span> <span class="literal">None</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">get_image</span>(<span class="params">json</span>):</span><br><span class="line">    <span class="keyword">if</span> json.get(<span class="string">&#x27;data&#x27;</span>):</span><br><span class="line">        <span class="keyword">for</span> item <span class="keyword">in</span> json.get(<span class="string">&#x27;data&#x27;</span>):</span><br><span class="line">            title = item.get(<span class="string">&#x27;title&#x27;</span>)</span><br><span class="line">            images = item.get(<span class="string">&#x27;image_list&#x27;</span>)</span><br><span class="line">            <span class="keyword">for</span> image <span class="keyword">in</span> images:</span><br><span class="line">                <span class="keyword">yield</span> &#123;</span><br><span class="line">                    <span class="string">&#x27;image&#x27;</span>: image.get(<span class="string">&#x27;url&#x27;</span>),</span><br><span class="line">                    <span class="string">&#x27;title&#x27;</span>: title</span><br><span class="line">                &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">save_image</span>(<span class="params">item</span>):</span><br><span class="line">    <span class="keyword">if</span> <span class="keyword">not</span> os.path.exists(item.get(<span class="string">&#x27;title&#x27;</span>)):</span><br><span class="line">        os.mkdir(item.get(<span class="string">&#x27;title&#x27;</span>))</span><br><span class="line">    <span class="keyword">try</span>:</span><br><span class="line">        response = requests.get(item.get(<span class="string">&#x27;image&#x27;</span>))</span><br><span class="line">        <span class="keyword">if</span> response.status_code == <span class="number">200</span>:</span><br><span class="line">            file_path = <span class="string">&#x27;&#123;0&#125;/&#123;1&#125;.&#123;2&#125;&#x27;</span>.<span class="built_in">format</span>(item.get(<span class="string">&#x27;title&#x27;</span>), md5(response.content).hexdigest(), <span class="string">&#x27;jpg&#x27;</span>)</span><br><span class="line">            <span class="keyword">if</span> <span class="keyword">not</span> os.path.exists(file_path):</span><br><span class="line">                <span class="keyword">with</span> <span class="built_in">open</span>(file_path, <span class="string">&#x27;wb&#x27;</span>) <span class="keyword">as</span> f:</span><br><span class="line">                    f.write(response.content)</span><br><span class="line">            <span class="keyword">else</span>:</span><br><span class="line">                <span class="built_in">print</span>(<span class="string">&#x27;Already Downloaded&#x27;</span>, file_path)</span><br><span class="line">    <span class="keyword">except</span> requests.ConnectionError:</span><br><span class="line">        <span class="built_in">print</span>(<span class="string">&#x27;Failed to save Image&#x27;</span>)</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">main</span>(<span class="params">offset</span>):</span><br><span class="line">    json = get_page(offset)</span><br><span class="line">    <span class="keyword">for</span> item <span class="keyword">in</span> get_image(json):</span><br><span class="line">        <span class="built_in">print</span>(item)</span><br><span class="line">        save_image(item)</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">GROUP_START = <span class="number">1</span></span><br><span class="line">GROUP_END = <span class="number">20</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span> __name__ == <span class="string">&#x27;__main__&#x27;</span>:</span><br><span class="line">    pool = Pool()</span><br><span class="line">    groups = ([x * <span class="number">20</span> <span class="keyword">for</span> x <span class="keyword">in</span> <span class="built_in">range</span>(GROUP_START, GROUP_END + <span class="number">1</span>)])</span><br><span class="line">    pool.<span class="built_in">map</span>(main, groups)</span><br><span class="line">    pool.<span class="built_in">map</span>(main, groups)</span><br><span class="line">    pool.close()</span><br><span class="line">    pool.join()</span><br><span class="line"></span><br></pre></td></tr></table></figure>
-<h3 id="参考资料"><a href="#参考资料" class="headerlink" title="参考资料"></a>参考资料</h3><p><a href="http://www.cuiqingcai.com">崔庆才大佬</a>的《python3网络爬虫开发实战》</p>
-]]></content>
-      <categories>
-        <category>crawler</category>
-      </categories>
-      <tags>
-        <tag>python</tag>
-        <tag>web crawler</tag>
-        <tag>data mining</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>数据挖掘--爬虫--动态渲染页面爬取</title>
-    <url>/2019/02/25/machine%20learning/clawler/clawler-6/</url>
-    <content><![CDATA[<h3 id="selenium的使用"><a href="#selenium的使用" class="headerlink" title="selenium的使用"></a>selenium的使用</h3><p>&emsp;&emsp;<a href="https://selenium-python.readthedocs.io/">官方文档</a><br>&emsp;&emsp;selenium是一个自动化测试工具，利用它可以驱动浏览器执行特定的动作，还可以获取浏览器当前呈现页面的源码。  </p>
-<h4 id="等待条件以及其含义"><a href="#等待条件以及其含义" class="headerlink" title="等待条件以及其含义"></a>等待条件以及其含义</h4><p>&emsp;&emsp;<a href="https://selenium-python.readthedocs.io/api.html#module-selenium.webdriver.support.expected_conditions">官方文档</a></p>
-<figure class="highlight python"><table><tr><td class="code"><pre><span class="line">wait = WebDriverWait(browser,<span class="number">1</span>)</span><br><span class="line">wait.until(EC.presence_of_element_located((By.ID,<span class="string">&#x27;content_left&#x27;</span>)))</span><br><span class="line"><span class="comment">#until中的即为等待条件</span></span><br></pre></td></tr></table></figure>
-<div class="table-container">
-<table>
-<thead>
-<tr>
-<th>等待条件</th>
-<th>含义</th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td>title_is</td>
-<td>标题是某内容</td>
-</tr>
-<tr>
-<td>title_contains</td>
-<td>标题包含某内容</td>
-</tr>
-<tr>
-<td>persence_of_element_localted</td>
-<td>节点加载出来，传入定位元素，如(By.ID,’p’)</td>
-</tr>
-<tr>
-<td>visibility_of_element_localted</td>
-<td>节点可见，传入定位元素</td>
-</tr>
-<tr>
-<td>visibility_of</td>
-<td>可见，传入节点对象</td>
-</tr>
-<tr>
-<td>persence_of_all_element_localted</td>
-<td>所有节点加载出来</td>
-</tr>
-<tr>
-<td>text_to_be_present_in_element</td>
-<td>某个节点文本包含某文字</td>
-</tr>
-<tr>
-<td>text_to_be_present_in_element_value</td>
-<td>某个节点值包含某文字</td>
-</tr>
-<tr>
-<td>frame_to_be_availiable_and_switch_to_it</td>
-<td>加载并切换</td>
-</tr>
-<tr>
-<td>invisibility_of_element_located</td>
-<td>节点不可见</td>
-</tr>
-<tr>
-<td>element_to_be_clickable</td>
-<td>节点可点击</td>
-</tr>
-<tr>
-<td>staleness_of</td>
-<td>判断一个节点是否仍在DOM，可判断页面是否已经刷新</td>
+<td>staleness_of</td>
+<td>判断一个节点是否仍在DOM，可判断页面是否已经刷新</td>
 </tr>
 <tr>
 <td>element_t_be_selected</td>
@@ -933,95 +762,266 @@
       </tags>
   </entry>
   <entry>
-    <title>数据挖掘--爬虫--爬虫基础</title>
-    <url>/2019/02/21/machine%20learning/clawler/crawler-2/</url>
-    <content><![CDATA[<h3 id="HTTP基本原理"><a href="#HTTP基本原理" class="headerlink" title="HTTP基本原理"></a>HTTP基本原理</h3><h4 id="URI和URL"><a href="#URI和URL" class="headerlink" title="URI和URL"></a>URI和URL</h4><p>&emsp;&emsp;URI(Uniform Resource Identifier),统一资源标志符；URL(Uniform Resource Locator),统一资源定位符；URN(Uniform Resource Name),统一资源名称，只命名组员而不指定如何定位资源。URL和URN都是URI的子集。</p>
-<h4 id="超文本hypertext"><a href="#超文本hypertext" class="headerlink" title="超文本hypertext"></a>超文本hypertext</h4><p>&emsp;&emsp;超文本是用超链接的方法，将各种不同空间的文字信息组织在一起的网状文本。网页就是超文本的一种体现</p>
-<h4 id="http和https"><a href="#http和https" class="headerlink" title="http和https"></a>http和https</h4><p>http(Hyper Text Transfer Protocol)超文本传输协议。用于从网络传输超文本数据到本地浏览器接收。<br>https(Hyper Text Transfer Protocol over Secure Socket Layer)，是以安全为目标的HTTP通道，在HTTP下加入SSL层。</p>
-<h4 id="http请求过程"><a href="#http请求过程" class="headerlink" title="http请求过程"></a>http请求过程</h4><div class="table-container">
+    <title>数据挖掘--爬虫--解析库</title>
+    <url>/2019/02/22/machine%20learning/clawler/clawler-4/</url>
+    <content><![CDATA[<h3 id="XPath"><a href="#XPath" class="headerlink" title="XPath"></a>XPath</h3><p>&emsp;&emsp;XPath，全程XML Path Language，是一门在XML文档中查找信息的语言，也适用于HTML文档的搜索<br>&emsp;&emsp;XPath<a href="http://www.w3school.com.cn/xpath/index.asp">用法</a> &emsp;&emsp; lxml库<a href="http://lxml.de/">用法</a></p>
+<h4 id="概览"><a href="#概览" class="headerlink" title="概览"></a>概览</h4><p>常用规则</p>
+<div class="table-container">
 <table>
 <thead>
 <tr>
-<th></th>
-<th>含义</th>
-<th>解释</th>
+<th>表达式</th>
+<th>描述</th>
 </tr>
 </thead>
 <tbody>
 <tr>
-<td>Name</td>
-<td>请求的名称</td>
-<td>一般会将URL的最后一部分内容当做名称</td>
-</tr>
-<tr>
-<td>Status</td>
-<td>响应的状态码</td>
+<td>nodename</td>
+<td>选取此节点的所有子节点</td>
 </tr>
 <tr>
-<td>Type</td>
-<td>请求的文档类型</td>
+<td>/</td>
+<td>从当前节点选取直接子节点</td>
 </tr>
 <tr>
-<td>Initiator</td>
-<td>请求源</td>
-<td>用来标记请求是由那个对象或进程发起的</td>
+<td>//</td>
+<td>从当前节点选取子孙节点</td>
 </tr>
 <tr>
-<td>Size</td>
-<td>从服务器下载的文件和请求的资源的大小</td>
+<td>.</td>
+<td>选取当前节点</td>
 </tr>
 <tr>
-<td>Time</td>
-<td>发起请求到获取相应所用的总时间</td>
+<td>..</td>
+<td>选取当前节点的父节点</td>
 </tr>
 <tr>
-<td>WaterFall</td>
-<td>网络请求的可视化瀑布流</td>
+<td>@</td>
+<td>选取属性</td>
 </tr>
 </tbody>
 </table>
 </div>
-<h4 id="请求"><a href="#请求" class="headerlink" title="请求"></a>请求</h4><p>&emsp;&emsp;请求可以分为4部分：请求方法(Request Method)、请求的网址(Request URL)、请求头(Request Header)、请求体(Request Body)。  </p>
-<h5 id="请求方法"><a href="#请求方法" class="headerlink" title="请求方法"></a>请求方法</h5><p>&emsp;&emsp;常见请求方法有两种，GET和POST。除此之外还有PUT、DELETE、OPTIONS、CONNECT、TRACE等</p>
+<p>运算符以及介绍</p>
 <div class="table-container">
 <table>
 <thead>
 <tr>
-<th>方法</th>
+<th>运算符</th>
 <th>描述</th>
+<th>实例</th>
+<th>返回值</th>
 </tr>
 </thead>
 <tbody>
 <tr>
-<td>GET</td>
-<td>请求页面，并返回页面内容</td>
+<td>or</td>
+<td>或</td>
+<td></td>
 </tr>
 <tr>
-<td>HEAD</td>
-<td>类似于GET，只不过返回的相应没有具体的内容，用于获取报头</td>
+<td>and</td>
+<td>与</td>
+<td></td>
 </tr>
 <tr>
-<td>POST</td>
-<td>大多用于提交表单或者上传文件，数据包含在请求体中</td>
+<td>mod</td>
+<td>取余</td>
+<td></td>
 </tr>
 <tr>
-<td>PUT</td>
-<td>从客户端向服务传送的数据取代指定文档中的内容</td>
+<td>\</td>
+<td></td>
+<td>计算两个节点集</td>
+<td>//book \</td>
+<td>//cd</td>
+<td>返回所有拥有book和cd元素的节点集</td>
 </tr>
 <tr>
-<td>DELETE</td>
-<td>请求服务器删除指定的页面</td>
+<td>+</td>
+<td>加法</td>
 </tr>
 <tr>
-<td>CONNECT</td>
-<td>把服务器当做跳板，让服务器代替客户端访问其他页面</td>
+<td>-</td>
+<td>减法</td>
 </tr>
 <tr>
-<td>OPTIONS</td>
-<td>允许客户端查看服务器的性能</td>
+<td>*</td>
+<td>乘法</td>
 </tr>
 <tr>
-<td>TRACE</td>
+<td>div</td>
+<td>除法</td>
+</tr>
+<tr>
+<td>=</td>
+<td>等于</td>
+</tr>
+<tr>
+<td>!=</td>
+<td>不等于</td>
+</tr>
+<tr>
+<td>&lt;</td>
+<td>小于</td>
+</tr>
+<tr>
+<td>&gt;</td>
+<td>大于</td>
+</tr>
+<tr>
+<td>&gt;=</td>
+<td>大于等于</td>
+</tr>
+<tr>
+<td>&lt;=</td>
+<td>小于等</td>
+</tr>
+</tbody>
+</table>
+</div>
+<h3 id="Beautiful-soup"><a href="#Beautiful-soup" class="headerlink" title="Beautiful soup"></a>Beautiful soup</h3><p>&emsp;&emsp;Beautiful Soup就是Python的一个HTML或XML的解析库</p>
+<h4 id="解析器"><a href="#解析器" class="headerlink" title="解析器"></a>解析器</h4><p>Beautiful soup在解析时实际上依赖解析库，支持的解析库如下</p>
+<div class="table-container">
+<table>
+<thead>
+<tr>
+<th>解析器</th>
+<th>使用的方法</th>
+<th>优势</th>
+<th>劣势</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>Python标准库</td>
+<td>BeautifulSoup(markup,”html.parser”)</td>
+<td>Python内置标准库，执行速度适中，文档容错能力强</td>
+<td>Python2.7.3以及3.2.2之前的版本文档容错能力差</td>
+</tr>
+<tr>
+<td>lxml html解析器</td>
+<td>BeautifulSoup(markup,”lxml”)</td>
+<td>速度快，文档容错能力强</td>
+<td>需要c语言库</td>
+</tr>
+<tr>
+<td>lxml xml解析器</td>
+<td>BeautifulSoup(markup,”xml”)</td>
+<td>速度快，唯一支持xml的解析器</td>
+<td>需要c语言库</td>
+</tr>
+<tr>
+<td>html5lib</td>
+<td>BeautifulSoup(markup,”html5lib”)</td>
+<td>最好的容错性、以浏览器的方式解析文档、生成html5格式的文档</td>
+<td>速度慢、不依赖扩展</td>
+</tr>
+</tbody>
+</table>
+</div>
+<h3 id="puquery"><a href="#puquery" class="headerlink" title="puquery"></a>puquery</h3><p>&emsp;&emsp;获取元素方式和jquery类似</p>
+<h3 id="参考资料"><a href="#参考资料" class="headerlink" title="参考资料"></a>参考资料</h3><p><a href="http://www.cuiqingcai.com">崔庆才大佬</a>的《python3网络爬虫开发实战》</p>
+]]></content>
+      <categories>
+        <category>crawler</category>
+      </categories>
+      <tags>
+        <tag>python</tag>
+        <tag>web crawler</tag>
+        <tag>data mining</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>数据挖掘--爬虫--爬虫基础</title>
+    <url>/2019/02/21/machine%20learning/clawler/crawler-2/</url>
+    <content><![CDATA[<h3 id="HTTP基本原理"><a href="#HTTP基本原理" class="headerlink" title="HTTP基本原理"></a>HTTP基本原理</h3><h4 id="URI和URL"><a href="#URI和URL" class="headerlink" title="URI和URL"></a>URI和URL</h4><p>&emsp;&emsp;URI(Uniform Resource Identifier),统一资源标志符；URL(Uniform Resource Locator),统一资源定位符；URN(Uniform Resource Name),统一资源名称，只命名组员而不指定如何定位资源。URL和URN都是URI的子集。</p>
+<h4 id="超文本hypertext"><a href="#超文本hypertext" class="headerlink" title="超文本hypertext"></a>超文本hypertext</h4><p>&emsp;&emsp;超文本是用超链接的方法，将各种不同空间的文字信息组织在一起的网状文本。网页就是超文本的一种体现</p>
+<h4 id="http和https"><a href="#http和https" class="headerlink" title="http和https"></a>http和https</h4><p>http(Hyper Text Transfer Protocol)超文本传输协议。用于从网络传输超文本数据到本地浏览器接收。<br>https(Hyper Text Transfer Protocol over Secure Socket Layer)，是以安全为目标的HTTP通道，在HTTP下加入SSL层。</p>
+<h4 id="http请求过程"><a href="#http请求过程" class="headerlink" title="http请求过程"></a>http请求过程</h4><div class="table-container">
+<table>
+<thead>
+<tr>
+<th></th>
+<th>含义</th>
+<th>解释</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>Name</td>
+<td>请求的名称</td>
+<td>一般会将URL的最后一部分内容当做名称</td>
+</tr>
+<tr>
+<td>Status</td>
+<td>响应的状态码</td>
+</tr>
+<tr>
+<td>Type</td>
+<td>请求的文档类型</td>
+</tr>
+<tr>
+<td>Initiator</td>
+<td>请求源</td>
+<td>用来标记请求是由那个对象或进程发起的</td>
+</tr>
+<tr>
+<td>Size</td>
+<td>从服务器下载的文件和请求的资源的大小</td>
+</tr>
+<tr>
+<td>Time</td>
+<td>发起请求到获取相应所用的总时间</td>
+</tr>
+<tr>
+<td>WaterFall</td>
+<td>网络请求的可视化瀑布流</td>
+</tr>
+</tbody>
+</table>
+</div>
+<h4 id="请求"><a href="#请求" class="headerlink" title="请求"></a>请求</h4><p>&emsp;&emsp;请求可以分为4部分：请求方法(Request Method)、请求的网址(Request URL)、请求头(Request Header)、请求体(Request Body)。  </p>
+<h5 id="请求方法"><a href="#请求方法" class="headerlink" title="请求方法"></a>请求方法</h5><p>&emsp;&emsp;常见请求方法有两种，GET和POST。除此之外还有PUT、DELETE、OPTIONS、CONNECT、TRACE等</p>
+<div class="table-container">
+<table>
+<thead>
+<tr>
+<th>方法</th>
+<th>描述</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>GET</td>
+<td>请求页面，并返回页面内容</td>
+</tr>
+<tr>
+<td>HEAD</td>
+<td>类似于GET，只不过返回的相应没有具体的内容，用于获取报头</td>
+</tr>
+<tr>
+<td>POST</td>
+<td>大多用于提交表单或者上传文件，数据包含在请求体中</td>
+</tr>
+<tr>
+<td>PUT</td>
+<td>从客户端向服务传送的数据取代指定文档中的内容</td>
+</tr>
+<tr>
+<td>DELETE</td>
+<td>请求服务器删除指定的页面</td>
+</tr>
+<tr>
+<td>CONNECT</td>
+<td>把服务器当做跳板，让服务器代替客户端访问其他页面</td>
+</tr>
+<tr>
+<td>OPTIONS</td>
+<td>允许客户端查看服务器的性能</td>
+</tr>
+<tr>
+<td>TRACE</td>
 <td>回显服务器收到得的请求，主要用于测试或者诊断</td>
 </tr>
 </tbody>
@@ -1473,6 +1473,61 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
         <tag>environment construct</tag>
       </tags>
   </entry>
+  <entry>
+    <title>数据结构 - 树</title>
+    <url>/2018/09/17/theory/algorithm/algorithm-tree/</url>
+    <content><![CDATA[<h4 id="树"><a href="#树" class="headerlink" title="树"></a>树</h4><p>&emsp;&emsp; 一棵树是一些节点的集合。如果这棵树非空，则一棵树由称作根（root）节点的r以及0个或者多个非空的(子)树组成，这些子树中每一棵的根都被来自根r的一条有向的边（edge）所连接。<br>&emsp;&emsp;每一棵子树的根叫做r的儿子，r是每一棵子树的根的父亲。没有儿子的节点称为树叶，具有相同父节点的节点称为兄弟。</p>
+]]></content>
+      <categories>
+        <category>algorithm</category>
+      </categories>
+      <tags>
+        <tag>algorithm</tag>
+        <tag>data structure</tag>
+        <tag>tree</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>分赌本问题</title>
+    <url>/2018/09/27/theory/algorithm/points_bookies/</url>
+    <content><![CDATA[<h4 id="问题描述"><a href="#问题描述" class="headerlink" title="问题描述"></a>问题描述</h4><p>&emsp;&emsp;假设A、B两个人赌博，假设每一局中每人获胜的概率是相同的，刚开始下的赌注均是100法郎，并且约定双方谁先获胜3局，谁就拿走所有的赌本，但是中途由于一些原因，不得不终止比赛，此时A胜2局，B胜1局，问此时赌本该怎么分配才均匀？<br>&emsp;&emsp;<font color ="red">注意：假设在赛点不会出现平局。</font></p>
+<h4 id="思路解析"><a href="#思路解析" class="headerlink" title="思路解析"></a>思路解析</h4><ol>
+<li>假设继续赌下去，至多两局结束</li>
+<li>若接下来的第四局A胜（1/2），则A获得所有赌注</li>
+<li>若接下来的第四局B胜（1/2），则进行第五局，第五局中，A胜（1/2*1/2=1/4）才能获得所有赌注</li>
+</ol>
+<h4 id="python模拟"><a href="#python模拟" class="headerlink" title="python模拟"></a>python模拟</h4><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="comment">#!/usr/bin/env python3</span></span><br><span class="line"><span class="comment"># -*- coding: utf-8 -*-</span></span><br><span class="line"><span class="string">&quot;&quot;&quot; @author zhangbohan.dell@gmail.com</span></span><br><span class="line"><span class="string">    @function: 分赌本问题</span></span><br><span class="line"><span class="string">    @create 2018/9/27 11:00&quot;&quot;&quot;</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> random</span><br><span class="line"></span><br><span class="line"><span class="string">&#x27;&#x27;&#x27;</span></span><br><span class="line"><span class="string">:param n 赢钱所需要的局数</span></span><br><span class="line"><span class="string">:param n1 第一个人已经赢得局数</span></span><br><span class="line"><span class="string">:param n2 第二个人已经赢得局数</span></span><br><span class="line"><span class="string">本程序中取n =3,n1 = 2,n2 = 1</span></span><br><span class="line"><span class="string">&#x27;&#x27;&#x27;</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">Bookies</span>(<span class="params">n, n1, n2</span>):</span><br><span class="line">    <span class="keyword">for</span> i <span class="keyword">in</span> <span class="built_in">range</span>(<span class="number">2</span> * n - n1 - n2 - <span class="number">1</span>):</span><br><span class="line">        D = random.randint(<span class="number">1</span>, <span class="number">2</span>)</span><br><span class="line">        <span class="keyword">if</span> D == <span class="number">1</span>:</span><br><span class="line">            n1 += <span class="number">1</span></span><br><span class="line">        <span class="keyword">else</span>:</span><br><span class="line">            n2 += <span class="number">1</span></span><br><span class="line">        <span class="keyword">if</span> n1 == n:</span><br><span class="line">            <span class="keyword">return</span> <span class="number">1</span></span><br><span class="line">        <span class="keyword">if</span> n2 == n:</span><br><span class="line">            <span class="keyword">return</span> <span class="number">2</span></span><br><span class="line"></span><br><span class="line">n = <span class="number">10000</span></span><br><span class="line">win = <span class="number">0</span></span><br><span class="line"><span class="keyword">for</span> i <span class="keyword">in</span> <span class="built_in">range</span>(n):</span><br><span class="line">    <span class="keyword">if</span> Bookies(<span class="number">3</span>, <span class="number">2</span>, <span class="number">1</span>) == <span class="number">1</span>:</span><br><span class="line">        win += <span class="number">1</span></span><br><span class="line"><span class="built_in">print</span>(<span class="string">&quot;A获得赢钱的可能为&#123;&#125;&quot;</span>.<span class="built_in">format</span>(<span class="built_in">float</span>(win / n)))</span><br></pre></td></tr></table></figure>]]></content>
+      <categories>
+        <category>probability theory</category>
+      </categories>
+      <tags>
+        <tag>algorithm</tag>
+        <tag>probability theory</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>蒙提霍尔三门问题</title>
+    <url>/2018/09/27/theory/algorithm/three-door/</url>
+    <content><![CDATA[<p>&emsp;&emsp;蒙提霍尔三门问题亦称蒙提霍尔悖论</p>
+<h4 id="问题描述"><a href="#问题描述" class="headerlink" title="问题描述"></a>问题描述</h4><p>&emsp;&emsp;参赛者会看见三扇关闭了的门，其中一扇的后面有一辆汽车，选中后面有车的那扇门可赢得该汽车，另外两扇门后面则各藏有一只山羊。当参赛者选定了一扇门，但未去开启它的时候，节目主持人开启剩下两扇门的其中一扇，露出其中一只山羊。主持人其后会问参赛者要不要换另一扇仍然关上的门。<br>&emsp;&emsp;<font color="red">问题是</font>：换另一扇门会否增加参赛者赢得汽车的机率？</p>
+<h4 id="思路解析"><a href="#思路解析" class="headerlink" title="思路解析"></a>思路解析</h4><ol>
+<li>三扇门，只有一扇门后有有汽车，其余的为山羊</li>
+<li>汽车事前等可能放置到三扇门中的其中一个</li>
+<li>参赛者等可能选择其中一扇，挑选前不知道门后有什么</li>
+<li>主持人清楚的知道门后有什么</li>
+<li>如果参赛者挑选了一扇有山羊的门，则主持人必须打开另一扇有山羊的门</li>
+<li>如果参赛者挑选了有汽车的门，主持人等可能在另外两扇有山羊的门选择一扇打开</li>
+<li>参赛者会被问保持原先选择还是转而选择另一扇门</li>
+</ol>
+<h4 id="Python模拟以上过程"><a href="#Python模拟以上过程" class="headerlink" title="Python模拟以上过程"></a>Python模拟以上过程</h4><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="comment">#!/usr/bin/env python3</span></span><br><span class="line"><span class="comment"># -*- coding: utf-8 -*-</span></span><br><span class="line"><span class="string">&quot;&quot;&quot; @author zhangbohan.dell@gmail.com</span></span><br><span class="line"><span class="string">    @function: 蒙提霍尔三门问题</span></span><br><span class="line"><span class="string">    @create 2018/9/27 10:09&quot;&quot;&quot;</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> random</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">MontyHall</span>(<span class="params">Dselect, Dchange</span>):</span><br><span class="line">    Dcar = random.randint(<span class="number">1</span>, <span class="number">3</span>)  <span class="comment"># 随机等可能放置汽车</span></span><br><span class="line">    <span class="keyword">if</span> Dcar == Dselect <span class="keyword">and</span> Dchange == <span class="number">0</span>:  <span class="comment"># 一开始选中并且没有改变选择</span></span><br><span class="line">        <span class="keyword">return</span> <span class="number">1</span></span><br><span class="line">    <span class="keyword">elif</span> Dcar != Dselect <span class="keyword">and</span> Dchange == <span class="number">0</span>:  <span class="comment"># 一开始没选中也没有改变选择</span></span><br><span class="line">        <span class="keyword">return</span> <span class="number">0</span></span><br><span class="line">    <span class="keyword">elif</span> Dcar == Dselect <span class="keyword">and</span> Dchange == <span class="number">1</span>:  <span class="comment"># 一开始选中并且改变选择</span></span><br><span class="line">        <span class="keyword">return</span> <span class="number">0</span></span><br><span class="line">    <span class="keyword">else</span>:  <span class="comment"># 一开始没选中并且改变选择</span></span><br><span class="line">        <span class="keyword">return</span> <span class="number">1</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line">n = <span class="number">10000</span></span><br><span class="line">win = <span class="number">0</span></span><br><span class="line"><span class="keyword">for</span> i <span class="keyword">in</span> <span class="built_in">range</span>(n):</span><br><span class="line">    select = random.randint(<span class="number">1</span>, <span class="number">3</span>)</span><br><span class="line">    win += MontyHall(select, random.randint(<span class="number">0</span>, <span class="number">1</span>))</span><br><span class="line"><span class="built_in">print</span>(<span class="string">&quot;不确认是够改变选择&#123;&#125;&quot;</span>.<span class="built_in">format</span>(<span class="built_in">float</span>(win / n)))</span><br><span class="line"></span><br><span class="line">win = <span class="number">0</span></span><br><span class="line"><span class="keyword">for</span> i <span class="keyword">in</span> <span class="built_in">range</span>(n):</span><br><span class="line">    select = random.randint(<span class="number">1</span>, <span class="number">3</span>)</span><br><span class="line">    win += MontyHall(select, <span class="number">0</span>)</span><br><span class="line"><span class="built_in">print</span>(<span class="string">&quot;确认不改变选择&#123;&#125;&quot;</span>.<span class="built_in">format</span>(<span class="built_in">float</span>(win / n)))</span><br><span class="line"></span><br><span class="line">win = <span class="number">0</span></span><br><span class="line"><span class="keyword">for</span> i <span class="keyword">in</span> <span class="built_in">range</span>(n):</span><br><span class="line">    select = random.randint(<span class="number">1</span>, <span class="number">3</span>)</span><br><span class="line">    win += MontyHall(select, <span class="number">1</span>)</span><br><span class="line"><span class="built_in">print</span>(<span class="string">&quot;确认改变选择&#123;&#125;&quot;</span>.<span class="built_in">format</span>(<span class="built_in">float</span>(win / n)))</span><br></pre></td></tr></table></figure>]]></content>
+      <categories>
+        <category>probability theory</category>
+      </categories>
+      <tags>
+        <tag>algorithm</tag>
+        <tag>probability theory</tag>
+      </tags>
+  </entry>
   <entry>
     <title>数据挖掘--爬虫--基础库</title>
     <url>/2019/02/22/machine%20learning/clawler/crawler-3/</url>
@@ -1629,306 +1684,11 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
       </tags>
   </entry>
   <entry>
-    <title>Linux指令记录合集（长期更新）</title>
-    <url>/2018/08/30/using/linux/linux-command/</url>
-    <content><![CDATA[<p>此命令合集适合于Centos <font color="#40B245">7</font></p>
-<h4 id="systemctl"><a href="#systemctl" class="headerlink" title="systemctl"></a>systemctl</h4><h5 id="服务相关指令"><a href="#服务相关指令" class="headerlink" title="服务相关指令"></a>服务相关指令</h5><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">systemctl start service-name        <span class="comment">#启动某服务</span></span><br><span class="line">systemctl stop service-name         <span class="comment">#停止某服务</span></span><br><span class="line">systemctl restart service-name      <span class="comment">#重启某服务</span></span><br><span class="line">systemctl <span class="built_in">enable</span> service-name       <span class="comment">#设置开机自动启动某服务</span></span><br><span class="line">systemctl <span class="built_in">disable</span> service-name      <span class="comment">#设置开机停止自动启动某服务</span></span><br><span class="line">systemctl list-units --<span class="built_in">type</span>=service <span class="comment">#查看所有已启动的服务</span></span><br><span class="line">systemctl list-unit-files           <span class="comment">#查看已经安装的所有服务</span></span><br></pre></td></tr></table></figure>
-<h5 id="添加程序到服务"><a href="#添加程序到服务" class="headerlink" title="添加程序到服务"></a>添加程序到服务</h5><p>systemctl脚本存放在:/usr/lib/systemd/<br>&emsp;&emsp;[Unit]部分主要是对这个服务的说明，内容包括Description和After，Description 用于描述服务，After用于描述服务类别<br>&emsp;&emsp;[Service]部分是服务的关键，是服务的一些具体运行参数的设置.<br>&emsp;&emsp;Type=forking是后台运行的形式，<br>&emsp;&emsp;User=users是设置服务运行的用户,<br>&emsp;&emsp;Group=users是设置服务运行的用户组,<br>&emsp;&emsp;PIDFile为存放PID的文件路径，<br>&emsp;&emsp;ExecStart为服务的具体运行命令,<br>&emsp;&emsp;ExecReload为重启命令，<br>&emsp;&emsp;ExecStop为停止命令，<br>&emsp;&emsp;PrivateTmp=True表示给服务分配独立的临时空间<br>    注意：[Service]部分的启动、重启、停止命令全部要求使用绝对路径，使用相对路径则会报错！<br>    [Install]部分是服务安装的相关设置，可设置为多用户的  </p>
-<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">#以tomcat为例</span></span><br><span class="line"><span class="comment">#vim /usr/lib/systemd/system/tomcat.service</span></span><br><span class="line"></span><br><span class="line">[Unit]</span><br><span class="line">Description=java tomcat project</span><br><span class="line">After=tomcat.service</span><br><span class="line">  </span><br><span class="line">[Service]</span><br><span class="line">Type=forking</span><br><span class="line">User=<span class="built_in">users</span></span><br><span class="line">Group=<span class="built_in">users</span></span><br><span class="line">PIDFile=/usr/local/tomcat/tomcat.pid</span><br><span class="line">ExecStart=/usr/local/tomcat/bin/startup.sh</span><br><span class="line">ExecReload=</span><br><span class="line">ExecStop=/usr/local/tomcat/bin/shutdown.sh</span><br><span class="line">PrivateTmp=<span class="literal">true</span></span><br><span class="line">  </span><br><span class="line">[Install]</span><br><span class="line">WantedBy=multi-user.target</span><br></pre></td></tr></table></figure>
-<h4 id="firewall-cmd"><a href="#firewall-cmd" class="headerlink" title="firewall-cmd"></a>firewall-cmd</h4><p>防火墙相关</p>
-<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">firewall-cmd --add-port=port-number/protocols --zone=zone-name --permanent <span class="comment">#在zone-name区域永久开启protocol协议的port-number端口</span></span><br><span class="line">firewall-cmd --zone=public --list-all   <span class="comment"># 显示所有公共区域（public）</span></span><br></pre></td></tr></table></figure>
-<h4 id="ln"><a href="#ln" class="headerlink" title="ln"></a>ln</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">ln</span> -s <span class="built_in">source</span> <span class="built_in">link</span>  <span class="comment">#创建一个指向source的link（快捷方式）</span></span><br></pre></td></tr></table></figure>
-<h4 id="后台运行命令"><a href="#后台运行命令" class="headerlink" title="后台运行命令"></a>后台运行命令</h4><ol>
-<li>&amp;<br> &emsp;&emsp;当在前台运行某个作业时，终端被该作业占据；可以在命令后面加上&amp; 实现后台运行。例如：sh test.sh &amp; 适合在后台运行的命令有f i n d、费时的排序及一些s h e l l脚本。在后台运行作业时要当心：需要用户交互的命令不要放在后台执行，因为这样你的机器就会在那里傻等。不过，作业在后台运行一样会将结果输出到屏幕上，干扰你的工作。如果放在后台运行的作业会产生大量的输出，最好使用下面的方法把它的输出重定向到某个文件中： <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">command</span>  &gt;  out.file  2&gt;&amp;1  &amp;   <span class="comment">#所有的标准输出和错误输出都将被重定向到一个叫做out.file 的文件中。</span></span><br></pre></td></tr></table></figure></li>
-<li>2&gt;&amp;1解析<br> &emsp;&emsp;2&gt;&amp;1 是将标准出错重定向到标准输出，这里的标准输出已经重定向到了out.file文件，即将标准出错也输出到out.file文件中。最后一个&amp;， 是让该命令在后台执行。<br> &emsp;&emsp;试想2&gt;1代表什么，2与&gt;结合代表错误重定向，而1则代表错误重定向到一个文件1，而不代表标准输出；换成2&gt;&amp;1，&amp;与1结合就代表标准输出了，就变成错误重定向到标准输出.</li>
-<li>nohup<br> &emsp;&emsp;使用&amp;命令后，作业被提交到后台运行，当前控制台没有被占用，但是一但把当前控制台关掉(退出帐户时)，作业就会停止运行。nohup命令可以在你退出帐户之后继续运行相应的进程。nohup就是不挂起的意思( no hang up)。该命令的一般形式为： <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">nohup</span> <span class="built_in">command</span> &amp;  <span class="comment">#在缺省情况下该作业的所有输出都被重定向到一个名为nohup.out的文件中，除非另外指定了输出文件：</span></span><br><span class="line"><span class="built_in">nohup</span> <span class="built_in">command</span> &gt; myout.file 2&gt;&amp;1 &amp;</span><br><span class="line"><span class="built_in">nohup</span> <span class="built_in">command</span> &gt; myout.file 2&gt;&amp;1 &amp; <span class="built_in">echo</span> $! &gt; pid <span class="comment">#将pid号存储到文件中</span></span><br></pre></td></tr></table></figure></li>
-<li>ctrl + z<br> &emsp;&emsp;可以将一个正在前台执行的命令放到后台，并且处于暂停状态。</li>
-<li>jobs<br> &emsp;&emsp;查看当前有多少在后台运行的命令。  <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">jobs</span> -l <span class="comment">#可显示所有任务的PID，jobs的状态可以是running, stopped, Terminated。但是如果任务被终止了（kill），shell 从当前的shell环境已知的列表中删除任务的进程标识。</span></span><br></pre></td></tr></table></figure>
-</li>
-</ol>
-<h4 id="硬件信息查看"><a href="#硬件信息查看" class="headerlink" title="硬件信息查看"></a>硬件信息查看</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">cat</span> /proc/cpuinfo |grep <span class="string">&quot;physical id&quot;</span>|<span class="built_in">sort</span>|<span class="built_in">uniq</span>|<span class="built_in">wc</span> -l    <span class="comment">#查看物理cpu个数</span></span><br><span class="line"><span class="built_in">cat</span> /proc/cpuinfo |grep <span class="string">&quot;cpu cores&quot;</span>|<span class="built_in">wc</span> -l       <span class="comment">#查看每个物理cpu中的core个数</span></span><br><span class="line"><span class="built_in">cat</span> /proc/cpuinfo |grep <span class="string">&quot;processor&quot;</span>|<span class="built_in">wc</span> -l       <span class="comment">#逻辑cpu的个数</span></span><br></pre></td></tr></table></figure>
-<h4 id="性能信息查看"><a href="#性能信息查看" class="headerlink" title="性能信息查看"></a>性能信息查看</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">top         <span class="comment">#性能监控程序</span></span><br><span class="line">free -m     <span class="comment">#查看内存使用情况</span></span><br></pre></td></tr></table></figure>
-<h4 id="保存程序运行pid到文件"><a href="#保存程序运行pid到文件" class="headerlink" title="保存程序运行pid到文件"></a>保存程序运行pid到文件</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">##通过命令行启动进程，然后通过ps ,grep, awk 关键字获取对应pid</span></span><br><span class="line">ps -ef|grep s |grep -v grep |awk <span class="string">&#x27;&#123;print $2&#125;&#x27;</span> &gt; process.PIDFile</span><br><span class="line"><span class="comment">###如果是使用nohup创建，查看当前shell最后一个后台进程pid  $!</span></span><br><span class="line"><span class="comment">##注意，下面的命令要放到sh文件里面执行，不能从命令行执行**</span></span><br><span class="line"><span class="built_in">nohup</span> <span class="built_in">command</span>  &amp; <span class="built_in">echo</span> $! &gt; process.pid</span><br><span class="line"><span class="comment"># 既写入文件又输出到标准输出</span></span><br><span class="line"><span class="built_in">nohup</span> <span class="built_in">command</span>  &amp; <span class="built_in">echo</span> $!|<span class="built_in">tee</span> process.pid</span><br></pre></td></tr></table></figure>
-<h4 id="修改开机启动模式"><a href="#修改开机启动模式" class="headerlink" title="修改开机启动模式"></a>修改开机启动模式</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">systemctl set-default graphical.target <span class="comment">#由命令行模式更改为图形界面模式</span></span><br><span class="line">systemctl set-default multi-user.target <span class="comment">#由图形界面模式更改为命令行模式</span></span><br></pre></td></tr></table></figure>
-<h4 id="解压tar-gz"><a href="#解压tar-gz" class="headerlink" title="解压tar.gz"></a>解压tar.gz</h4><p>tar命令说明：<br>&emsp;&emsp;语法：tar [主选项+辅选项] 文件或目录<br>&emsp;&emsp;使用该命令时，主选项必须有，它告诉tar要做什么事情，辅选项是辅助使用的，可以选用。<br>主选项：【一条命令以下5个参数只能有一个】<br>&emsp;&emsp;-c: —create 新建一个压缩文档，即打包<br>&emsp;&emsp;-x: —extract,—get解压文件<br>&emsp;&emsp;-t: —list,查看压缩文档里的所有内容<br>&emsp;&emsp;-r:—append 向压缩文档里追加文件<br>&emsp;&emsp;-u:—update 更新原压缩包中的文件<br>辅助选项：<br>&emsp;&emsp;-z:是否同时具有gzip的属性？即是否需要用gzip压缩或解压？一般格式为x.tar.gz或xx.tgz<br>&emsp;&emsp;-j：是否同时具有bzip2的属性？即是否需要用bzip2压缩或解压？一般格式为x.tar.bz2<br>&emsp;&emsp;-v:显示操作过程！这个参数很常用<br>&emsp;&emsp;-f：使用文档名，注意，在f之后要立即接文档名，不要再加其他参数！<br>&emsp;&emsp;-C:切换到指定目录<br>&emsp;&emsp;—exclude FILE:在压缩过程中，不要将FILE打包  </p>
-<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">tar -zxvf xxx.tar.gz -C path</span><br></pre></td></tr></table></figure>
-<h4 id="配置环境变量"><a href="#配置环境变量" class="headerlink" title="配置环境变量"></a>配置环境变量</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">vim /etc/profile    <span class="comment">#修改环境变量文件内容  export xx_home=path</span></span><br><span class="line"><span class="built_in">source</span> /etc/profile <span class="comment">#使环境变量生效</span></span><br></pre></td></tr></table></figure>]]></content>
-      <categories>
-        <category>linux</category>
-      </categories>
-      <tags>
-        <tag>linux</tag>
-        <tag>command</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>Docker使用记录</title>
-    <url>/2018/09/28/using/middleware/docker-using/</url>
-    <content><![CDATA[<h4 id="安装"><a href="#安装" class="headerlink" title="安装"></a>安装</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">yum install -y docker</span><br></pre></td></tr></table></figure>
-<h4 id="修改docker下载源为国内源-这里使用的阿里源"><a href="#修改docker下载源为国内源-这里使用的阿里源" class="headerlink" title="修改docker下载源为国内源(这里使用的阿里源)"></a>修改docker下载源为国内源(这里使用的阿里源)</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">sudo <span class="built_in">mkdir</span> -p /etc/docker</span><br><span class="line">sudo <span class="built_in">tee</span> /etc/docker/daemon.json &lt;&lt;-<span class="string">&#x27;EOF&#x27;</span></span><br><span class="line">&#123;</span><br><span class="line">  <span class="string">&quot;registry-mirrors&quot;</span>: [<span class="string">&quot;https://n9tog3ea.mirror.aliyuncs.com&quot;</span>]</span><br><span class="line">&#125;</span><br><span class="line">EOF</span><br><span class="line">sudo systemctl daemon-reload</span><br><span class="line">sudo systemctl restart docker</span><br></pre></td></tr></table></figure>
-<p>其他源：<br><a href="https://registry.docker-cn.com">Docker 官方中国区 https://registry.docker-cn.com</a><br><a href="http://hub-mirror.c.163.com">网易 http://hub-mirror.c.163.com</a><br><a href="http://hub-mirror.c.163.com">ustc https://docker.mirrors.ustc.edu.cn</a>  </p>
-<h4 id="Docker镜像使用"><a href="#Docker镜像使用" class="headerlink" title="Docker镜像使用"></a>Docker镜像使用</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">#docekr search software 查找镜像</span></span><br><span class="line">docker search httpd</span><br><span class="line"><span class="comment">#docker pull software 下拉镜像</span></span><br><span class="line">docker pull redis</span><br><span class="line">docker pull mariadb</span><br><span class="line">docekr pull mongo</span><br><span class="line">docker pull cloudesire/activemq</span><br><span class="line">docker pull rabbitmq</span><br><span class="line">docker pull rabbitmq:3-management</span><br><span class="line">docker pull nginx</span><br><span class="line">docker pull tomcat </span><br><span class="line"></span><br></pre></td></tr></table></figure>
-<h4 id="docker指令帮助"><a href="#docker指令帮助" class="headerlink" title="docker指令帮助"></a>docker指令帮助</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">docker --<span class="built_in">help</span></span><br><span class="line"><span class="comment">#docker command --help 查看docker帮助</span></span><br><span class="line">docker start --<span class="built_in">help</span></span><br><span class="line"><span class="comment">#man docker command 查看command的man文档</span></span><br><span class="line">man docker start</span><br></pre></td></tr></table></figure>]]></content>
-      <categories>
-        <category>docker</category>
-      </categories>
-      <tags>
-        <tag>linux</tag>
-        <tag>docker</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>ELK日志分析系统搭建过程以及使用说明</title>
-    <url>/2018/12/04/using/middleware/elk/</url>
-    <content><![CDATA[<h2 id="环境搭建"><a href="#环境搭建" class="headerlink" title="环境搭建"></a>环境搭建</h2><h3 id="环境搭建说明"><a href="#环境搭建说明" class="headerlink" title="环境搭建说明"></a>环境搭建说明</h3><p>Centos 7 *2 + elastics 5.6.12 + logstash 5.6.12 + kibana 5.6.12 + filebeat 5.6.12</p>
-<h3 id="ElasticSearch环境搭建"><a href="#ElasticSearch环境搭建" class="headerlink" title="ElasticSearch环境搭建"></a>ElasticSearch环境搭建</h3><ol>
-<li><p>下载解压</p>
- <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.12.tar.gz</span><br><span class="line">tar -zxvf elasticsearch-5.6.12.tar.gz -C /elk/elasticsearch/</span><br></pre></td></tr></table></figure>
-</li>
-<li><p>配置/config/elasticsearch.yml</p>
- <figure class="highlight vim"><table><tr><td class="code"><pre><span class="line">network.host: <span class="number">0.0</span>.<span class="number">0.0</span> # 访问地址</span><br><span class="line">http.port: <span class="number">9200</span>   #端口号</span><br><span class="line">cluster.name: nmtx-cluster</span><br><span class="line">node.name: node-<span class="number">1</span></span><br></pre></td></tr></table></figure>
-</li>
-<li><p>运行</p>
- <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">nohup</span> ./bin/elasticsearch &gt; ../logs/elasticsearch.log  2&gt;&amp;1 &amp; <span class="built_in">echo</span> $! &gt; process.pid</span><br><span class="line"><span class="comment">#在后台运行，日志打印到../logs/elasticsearch.log，进程号保存至process.pid</span></span><br></pre></td></tr></table></figure></li>
-<li>踩过的坑<ol>
-<li>不要使用root账户启动elasticsearch，这是出于系统安全考虑设置的条件。</li>
-<li>max virtual memory areas vm.max_map_count [65530] is too low, increase to at ，需要调整虚拟内存设置  <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">vim /etc/sysctl.conf</span><br><span class="line"><span class="comment">#添加如下信息并保存</span></span><br><span class="line">vm.max_map_count=655360</span><br><span class="line"></span><br><span class="line"><span class="comment">#运行以生效</span></span><br><span class="line">sysctl -p</span><br></pre></td></tr></table></figure></li>
-<li>需要修改linux对文件、线程的限制 <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">#修改系统文件</span></span><br><span class="line">vim /etc/security/limits.d/20-nproc.conf</span><br><span class="line"><span class="comment">#调整成以下配置</span></span><br><span class="line">*       soft    <span class="built_in">nproc</span>    4096</span><br><span class="line">root    soft    <span class="built_in">nproc</span>    unlimited</span><br></pre></td></tr></table></figure></li>
-</ol>
-</li>
-<li><p>验证  </p>
-<p> &emsp;&emsp;访问9200端口看到如下类似信息即可  </p>
- <figure class="highlight json"><table><tr><td class="code"><pre><span class="line"><span class="punctuation">&#123;</span></span><br><span class="line"><span class="attr">&quot;name&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;node-1&quot;</span><span class="punctuation">,</span></span><br><span class="line"><span class="attr">&quot;cluster_name&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;nmtx-cluster&quot;</span><span class="punctuation">,</span></span><br><span class="line"><span class="attr">&quot;cluster_uuid&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;plk3ql1SQ2umnqSpyBGI_w&quot;</span><span class="punctuation">,</span></span><br><span class="line"><span class="attr">&quot;version&quot;</span> <span class="punctuation">:</span> <span class="punctuation">&#123;</span></span><br><span class="line">    <span class="attr">&quot;number&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;5.6.12&quot;</span><span class="punctuation">,</span></span><br><span class="line">    <span class="attr">&quot;build_hash&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;cfe3d9f&quot;</span><span class="punctuation">,</span></span><br><span class="line">    <span class="attr">&quot;build_date&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;2018-09-10T20:12:43.732Z&quot;</span><span class="punctuation">,</span></span><br><span class="line">    <span class="attr">&quot;build_snapshot&quot;</span> <span class="punctuation">:</span> <span class="literal"><span class="keyword">false</span></span><span class="punctuation">,</span></span><br><span class="line">    <span class="attr">&quot;lucene_version&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;6.6.1&quot;</span></span><br><span class="line"><span class="punctuation">&#125;</span><span class="punctuation">,</span></span><br><span class="line"><span class="attr">&quot;tagline&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;You Know, for Search&quot;</span></span><br><span class="line"><span class="punctuation">&#125;</span></span><br></pre></td></tr></table></figure>
-</li>
-</ol>
-<h3 id="filebeat环境搭建"><a href="#filebeat环境搭建" class="headerlink" title="filebeat环境搭建"></a>filebeat环境搭建</h3><h4 id="什么是Beats"><a href="#什么是Beats" class="headerlink" title="什么是Beats"></a>什么是Beats</h4><p>&emsp;&emsp;Beats 是安装在服务器上的数据中转代理，Beats 可以将数据直接传输到 Elasticsearch 或传输到 Logstash 。常见的Beats：</p>
-<ul>
-<li>Packetbeat：网络数据包分析器，提供有关您的应用程序服务器之间交换的事务的信息。  </li>
-<li>Filebeat：从您的服务器发送日志文件。  </li>
-<li>Metricbeat：是一个服务器监视代理程序，它定期从服务器上运行的操作系统和服务收集指标。</li>
-<li>Winlogbeat：提供Windows事件日志。</li>
-</ul>
-<h4 id="为什么使用filebeat"><a href="#为什么使用filebeat" class="headerlink" title="为什么使用filebeat"></a>为什么使用filebeat</h4><p>&emsp;&emsp;相比 Logstash，FileBeat 更加<font color="red">轻量化</font>。在任何环境下，应用程序都有停机的可能性。 Filebeat 读取并转发日志行，<font color="red">如果中断，则会记住所有事件恢复联机状态时所在位置
-</font>。Filebeat带有内部模块（auditd，Apache，Nginx，System和MySQL），可通过一个指定命令来简化通用日志格式的收集，解析和可视化。<br>FileBeat <font color="red">不会让你的管道超负荷</font>。FileBeat 如果是向 Logstash 传输数据，当 Logstash 忙于处理数据，会通知 FileBeat 放慢读取速度。一旦拥塞得到解决，FileBeat 将恢复到原来的速度并继续传播。</p>
-<ol>
-<li><p>下载与安装</p>
- <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">wget https://artifacts.elastic.co/downloads/beats/filebeat/filebeat-5.6.12-linux-x86_64.tar.gz</span><br><span class="line">tar -zxvf ilebeat-5.6.12-linux-x86_64.tar.gz -C /elk/filebeat/</span><br></pre></td></tr></table></figure>
-</li>
-<li><p>配置filebeat.yml</p>
-<figure class="highlight vim"><table><tr><td class="code"><pre><span class="line">filebeat.prospectors:</span><br><span class="line"></span><br><span class="line"># Each - <span class="keyword">is</span> <span class="keyword">a</span> prospector. Most <span class="keyword">options</span> can <span class="keyword">be</span> <span class="keyword">set</span> at the prospector level, <span class="keyword">so</span></span><br><span class="line"># you can use different prospectors <span class="keyword">for</span> various configurations.</span><br><span class="line"># Below are the prospector specific configurations.</span><br><span class="line"></span><br><span class="line">- input_type: <span class="built_in">log</span></span><br><span class="line"></span><br><span class="line"># Paths that should <span class="keyword">be</span> crawled <span class="built_in">and</span> fetched. Glob based paths.</span><br><span class="line">paths:</span><br><span class="line">    - /var/<span class="built_in">log</span>/*-info.<span class="built_in">log</span>    #监听文件目录以及正则匹配规则</span><br><span class="line">    #- <span class="keyword">c</span>:\programdata\elasticsearch\logs\*  windows下的路径</span><br><span class="line">multiline: # 日志多行处理，列如java的堆栈信息</span><br><span class="line">    pattern: ^\d&#123;<span class="number">4</span>&#125; # 匹配前缀为数字开头，如果不是日期，该行日志接到上一行后尾</span><br><span class="line">    negate: true</span><br><span class="line">    <span class="keyword">match</span>: after</span><br><span class="line"></span><br><span class="line">fields: # 自定义属性，用于 Logstash 中</span><br><span class="line">    service_name: customer # 产生日志的服务名</span><br><span class="line">    log_type: info # 日志文件类型</span><br><span class="line">    server_id: ip-address # 服务器ip地址</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">#----------------------------- Logstash output --------------------------------</span><br><span class="line">output.logstash:</span><br><span class="line"># The Logstash hosts</span><br><span class="line">hosts: [<span class="string">&quot;localhost:5043&quot;</span>]  #这里是发送到本地的logstash，要与logstash的<span class="built_in">input</span>对应，也可以设置为elasticsearch</span><br><span class="line"></span><br></pre></td></tr></table></figure>
-</li>
-<li><p>运行</p>
- <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">nohup</span> ./filebeat -e -c filebeat.yml &gt; ../logs/filebeat.log 2&gt;&amp;1 &amp;  <span class="built_in">echo</span> $! &gt; process.pid</span><br></pre></td></tr></table></figure>
-</li>
-</ol>
-<h3 id="logstash环境搭建"><a href="#logstash环境搭建" class="headerlink" title="logstash环境搭建"></a>logstash环境搭建</h3><ol>
-<li><p>下载与安装</p>
- <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">wget https://artifacts.elastic.co/downloads/logstash/logstash-5.6.12.tar.gz</span><br><span class="line">tar -zxvf logstash-5.6.12.tar.gz -C /elk/logstash/</span><br></pre></td></tr></table></figure>
-</li>
-<li><p>配置logstash /config/logstash.conf</p>
-<figure class="highlight vim"><table><tr><td class="code"><pre><span class="line"><span class="built_in">input</span> &#123;</span><br><span class="line">    beats &#123;</span><br><span class="line">        host =&gt; <span class="string">&quot;localhost&quot;</span>  #监听本地访问的<span class="number">5043</span>端口</span><br><span class="line">        port =&gt; <span class="string">&quot;5043&quot;</span></span><br><span class="line">    &#125;</span><br><span class="line">    beats&#123;</span><br><span class="line">        host =&gt; <span class="string">&quot;0.0.0.0&quot;</span>  #监听任何地址都可访问的<span class="number">5044</span>端口</span><br><span class="line">        port =&gt; <span class="string">&quot;5044&quot;</span></span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="built_in">filter</span> &#123;</span><br><span class="line">    <span class="keyword">if</span> [fields][log_type] == <span class="string">&#x27;error&#x27;</span> &#123;</span><br><span class="line">        grok &#123;</span><br><span class="line">        <span class="keyword">match</span> =&gt; &#123; <span class="string">&quot;message&quot;</span> =&gt; <span class="string">&quot;%&#123;TIMESTAMP_ISO8601:logdate&#125; %&#123;LOGLEVEL:loglevel&#125; %&#123;JAVACLASS:class&#125; %&#123;NUMBER:thread&#125; %&#123;JAVALOGMESSAGE:logmsg&#125;&quot;</span> &#125;</span><br><span class="line">            &#125;</span><br><span class="line">        date &#123; # 将 kibana 的查询时间改成日志的打印时间，方便之后查询，如果不改的话，kibana会有自己的时间，导致查询不方便</span><br><span class="line">            <span class="keyword">match</span> =&gt; [<span class="string">&quot;logdate&quot;</span>, <span class="string">&quot;yyyy-MM-dd HH:mm:ss Z&quot;</span>, <span class="string">&quot;ISO8601&quot;</span>]</span><br><span class="line">            target =&gt; <span class="string">&quot;@timestamp&quot;</span></span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> [fields][log_type] == <span class="string">&#x27;info&#x27;</span> &#123; # 如果是info类型该怎么格式，这里是重复的，如果有日志格式不一样比如nginx的日志类型，可以在这里自己定义</span><br><span class="line">        grok &#123;</span><br><span class="line">        <span class="keyword">match</span> =&gt; &#123; <span class="string">&quot;message&quot;</span> =&gt; <span class="string">&quot;%&#123;TIMESTAMP_ISO8601:logdate&#125; %&#123;LOGLEVEL:loglevel&#125; %&#123;JAVACLASS:class&#125; %&#123;NUMBER:thread&#125; %&#123;JAVALOGMESSAGE:logmsg&#125;&quot;</span> &#125;</span><br><span class="line">            &#125;</span><br><span class="line">        date &#123;</span><br><span class="line">            <span class="keyword">match</span> =&gt; [<span class="string">&quot;logdate&quot;</span>, <span class="string">&quot;yyyy-MM-dd HH:mm:ss Z&quot;</span>, <span class="string">&quot;ISO8601&quot;</span>]</span><br><span class="line">            target =&gt; <span class="string">&quot;@timestamp&quot;</span></span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">output &#123;</span><br><span class="line">    elasticsearch &#123;</span><br><span class="line">        hosts =&gt; [<span class="string">&quot;localhost:9200&quot;</span>]</span><br><span class="line">        <span class="built_in">index</span> =&gt; <span class="string">&quot;%&#123;[fields][service_name]&#125;-%&#123;+YYYY.MM.dd&#125;&quot;</span> # 在es中存储的索引格式，按照“服务名-日期”进行索引</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure></li>
-<li><p>运行</p>
- <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">nohup</span> bin/logstash -f config/logstash.conf &gt; ../logs/logstash.log  2&gt;&amp;1 &amp; <span class="built_in">echo</span> $! &gt; process.pid</span><br></pre></td></tr></table></figure>
-</li>
-</ol>
-<h3 id="kibana环境搭建"><a href="#kibana环境搭建" class="headerlink" title="kibana环境搭建"></a>kibana环境搭建</h3><ol>
-<li><p>下载与安装</p>
- <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">wget https://artifacts.elastic.co/downloads/kibana/kibana-5.6.12-linux-x86_64.tar.gz</span><br><span class="line">tar -zxvf kibana-5.6.12-linux-x86_64.tar.gz -C /elk/kibana/</span><br></pre></td></tr></table></figure></li>
-<li><p>配置kibana /config/kibana.log</p>
- <figure class="highlight vim"><table><tr><td class="code"><pre><span class="line">server.port: <span class="number">5601</span></span><br><span class="line">server.host: <span class="string">&quot;0.0.0.0&quot;</span> #允许其他终端访问</span><br><span class="line">elasticsearch.url: <span class="string">&quot;http://localhost:9200&quot;</span> #elasticsearch访问地址</span><br></pre></td></tr></table></figure>
-</li>
-<li><p>运行</p>
- <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">nohup</span> bin/kibana &gt; ../logs/kibana.log 2&gt;&amp;1 &amp; <span class="built_in">echo</span> $! &gt; process.pid</span><br></pre></td></tr></table></figure>
-</li>
-<li><p>验证<br>&emsp;&emsp;访问5601端口有页面即为正常</p>
-</li>
-</ol>
-<h2 id="使用说明"><a href="#使用说明" class="headerlink" title="使用说明"></a>使用说明</h2><h3 id="Kibana使用说明"><a href="#Kibana使用说明" class="headerlink" title="Kibana使用说明"></a>Kibana使用说明</h3><ol>
-<li>查看系统运行状态<br>&emsp;&emsp;访问<a href="http://localhsot:5601/status">http://localhsot:5601/status</a></li>
-<li>基本使用<br>&emsp;&emsp;在 Discover 页搜索和浏览数据；在 Visualize 页做数据图表映射；在 Dashboard 页创建并查看自定义仪表板。</li>
-</ol>
-<p>参考资料：<br><a href="https://www.elastic.co/guide/cn/kibana/current/index.html">https://www.elastic.co/guide/cn/kibana/current/index.html</a></p>
-<h3 id="elasticsearch查询语法"><a href="#elasticsearch查询语法" class="headerlink" title="elasticsearch查询语法"></a>elasticsearch查询语法</h3><ol>
-<li>其中status字段包含active &emsp;&emsp;-&gt;&emsp;&emsp;  status:active</li>
-<li>其中title字段包含quick或brown。如果省略OR运算符，将使用默认运算符 &emsp;&emsp; -&gt; &emsp;&emsp; title:(quick OR brown)  或者是title:(quick brown)</li>
-<li>其中author字段包含精确短语”john smith” &emsp;&emsp; -&gt; &emsp;&emsp; author:”john smith”</li>
-<li>其中任何字段book.title，book.content或book.date包含 quick或brown（注意我们需要如何*使用反斜杠转义） &emsp;&emsp; -&gt; &emsp;&emsp;</li>
-<li>该字段title具有任何非null值：&emsp;&emsp;-&gt;&emsp;&emsp;<em>exists</em>:title</li>
-<li>通配符搜索可以在单个术语上运行，使用?替换单个字符，并*替换零个或多个字符  <font color="red">请注意，通配符查询可能会占用大量内存并执行得非常糟糕 - 只需考虑需要查询多少个术语以匹配查询字符串"a* b* c*"。</font></li>
-<li>正则表达式 &emsp;&emsp;-&gt;&emsp;&emsp;  /pattern/</li>
-<li>模糊 &emsp;&emsp;-&gt;&emsp;&emsp; quikc~brwn~foks~</li>
-<li>邻近搜索 邻近搜索允许我们指定短语中单词的最大编辑距离：&emsp;&emsp;-&gt;&emsp;&emsp;”fox quick”~5</li>
-<li>范围 可以为日期，数字或字符串字段指定范围。包含范围用方括号指定，[min TO max]排他范围用大括号指定{min TO max}。</li>
-<li>保留字符   + - = &amp;&amp; || &gt; &lt; ! ( ) { } [ ] ^ “ ~ * ? : \ /</li>
-<li>分组 可以将多个术语或子句与括号组合在一起，以形成子查询：</li>
-<li>布尔运算符 首选运算符+（此术语必须存在）和- （此术语不得出现）。</li>
-<li>提升 使用boost运算符^使一个术语比另一个术语更相关。例如，如果我们想要找到关于fox的所有文件，但我们对quick fox特别感兴趣  &emsp;&emsp;-&gt;&emsp;&emsp; quick^2 fox</li>
-</ol>
-<p>参考资料<br> <a href="https://www.elastic.co/guide/en/elasticsearch/reference/6.0/query-dsl-query-string-query.html#_boosting">https://www.elastic.co/guide/en/elasticsearch/reference/6.0/query-dsl-query-string-query.html#_boosting</a></p>
-]]></content>
-      <categories>
-        <category>elk</category>
-      </categories>
-      <tags>
-        <tag>linux</tag>
-        <tag>elk</tag>
-        <tag>midedleware</tag>
-        <tag>log</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>mycat使用记录一 -- 安装与配置</title>
-    <url>/2018/08/30/using/middleware/mycat-1/</url>
-    <content><![CDATA[<p>rkdownm</p>
-<h4 id="背景条件"><a href="#背景条件" class="headerlink" title="背景条件"></a>背景条件</h4><p>&emsp;&emsp;现有app流量数据统计分析系统，因数据量过大使用单数据库性能有限，打算将现有数据库进行优化，计划使用mycat实现分布式，在本地搭建环境学习</p>
-<h4 id="环境"><a href="#环境" class="headerlink" title="环境"></a>环境</h4><p>&emsp;&emsp;VMware虚拟机下的Cetnos7 × 3台</p>
-<h4 id="mycat的安装"><a href="#mycat的安装" class="headerlink" title="mycat的安装"></a>mycat的安装</h4><ol>
-<li><a href="http://dl.mycat.io">下载</a>mycat，这里我选择的是1.6.5版本，也就是目前的release版本。</li>
-<li>上传至linux系统，解压至/opt/mycat(我习惯的目录)</li>
-</ol>
-<h4 id="mycat的配置"><a href="#mycat的配置" class="headerlink" title="mycat的配置"></a>mycat的配置</h4><h5 id="配置文件路径"><a href="#配置文件路径" class="headerlink" title="配置文件路径"></a>配置文件路径</h5><p>$mycat_home$指的是安装目录<br>$mycat_home$/conf/server.xml    Mycat的配置文件，设置账号、参数等<br>$mycat_home$/conf/schema.xml  Mycat对应的物理数据库和数据库表的配置<br>$mycat_home$/conf/rule.xml    Mycat分片（分库分表）规则  </p>
-<h5 id="具体配置"><a href="#具体配置" class="headerlink" title="具体配置"></a>具体配置</h5><ol>
-<li>wrapper.conf<br>—配置jdk(如果已经配置java环境变量，这一步可以忽略) <figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">wrapper.java.command=/usr/bin/java</span><br><span class="line">#配置java的路径</span><br></pre></td></tr></table></figure></li>
-<li><p>server.xml</p>
-<ol>
-<li><p>user标签</p>
-<figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">user</span> <span class="attr">name</span>=<span class="string">&quot;root&quot;</span> <span class="attr">defaultAccount</span>=<span class="string">&quot;true&quot;</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">&quot;password&quot;</span>&gt;</span>your_password<span class="tag">&lt;/<span class="name">property</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">&quot;schemas&quot;</span>&gt;</span>db1,db2<span class="tag">&lt;/<span class="name">property</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">&quot;readOnly&quot;</span>&gt;</span>false<span class="tag">&lt;/<span class="name">property</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">user</span>&gt;</span></span><br></pre></td></tr></table></figure>
-<p>user    用户配置节点<br>—name    登录的用户名，也就是连接Mycat的用户名<br>—password    登录的密码，也就是连接Mycat的密码<br>—schemas    数据库名，这里会和schema.xml中的配置关联，多个用逗号分开，例如需要这个用户需要管理两个数据库db1,db2，则配置db1,dbs  </p>
-</li>
-<li><p>privileges标签</p>
-<figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"> <span class="tag">&lt;<span class="name">privileges</span> <span class="attr">check</span>=<span class="string">&quot;false&quot;</span>&gt;</span> 默认关闭</span><br><span class="line">    <span class="tag">&lt;<span class="name">schema</span> <span class="attr">name</span>=<span class="string">&quot;TESTDB&quot;</span> <span class="attr">dml</span>=<span class="string">&quot;0110&quot;</span> &gt;</span></span><br><span class="line">        <span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">&quot;tb 01&quot;</span> <span class="attr">dml</span>=<span class="string">&quot;0000&quot;</span>&gt;</span><span class="tag">&lt;/<span class="name">table</span>&gt;</span></span><br><span class="line">        <span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">&quot;tb02&quot;</span> <span class="attr">dml</span>=<span class="string">&quot;1111&quot;</span>&gt;</span><span class="tag">&lt;/<span class="name">table</span>&gt;</span></span><br><span class="line">        1 代表有权限</span><br><span class="line">        0 代表无权限</span><br><span class="line">    顺序为  insert,update,select,delete</span><br><span class="line">    <span class="tag">&lt;/<span class="name">schema</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">privileges</span>&gt;</span></span><br></pre></td></tr></table></figure></li>
-<li>system标签<br>&emsp;&emsp;这个标签内嵌套的所有 property 标签都与系统配置有关。  </li>
-<li>firewall标签<br>&emsp;&emsp;有关防火墙的标签，也就是在网络层对请求的地址进行限制，主要是从安全角度来保证Mycat不被匿名IP进行访问  <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"> <span class="comment">&lt;!-- 全局SQL防火墙设置 --&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--白名单可以使用通配符%或着*--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--例如&lt;host host=&quot;127.0.0.*&quot; user=&quot;root&quot;/&gt;--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--例如&lt;host host=&quot;127.0.*&quot; user=&quot;root&quot;/&gt;--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--例如&lt;host host=&quot;127.*&quot; user=&quot;root&quot;/&gt;--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--例如&lt;host host=&quot;1*7.*&quot; user=&quot;root&quot;/&gt;--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--这些配置情况下对于127.0.0.1都能以root账户登录--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--</span></span><br><span class="line"><span class="comment"> &lt;firewall&gt;</span></span><br><span class="line"><span class="comment">    &lt;whitehost&gt;</span></span><br><span class="line"><span class="comment">       &lt;host host=&quot;1*7.0.0.*&quot; user=&quot;root&quot;/&gt;</span></span><br><span class="line"><span class="comment">    &lt;/whitehost&gt;</span></span><br><span class="line"><span class="comment">    &lt;blacklist check=&quot;false&quot;&gt;</span></span><br><span class="line"><span class="comment">    &lt;/blacklist&gt;</span></span><br><span class="line"><span class="comment">&lt;/firewall&gt;</span></span><br></pre></td></tr></table></figure>
-</li>
-</ol>
-</li>
-<li><p>schema.xml<br>— schema      数据库设置，此数据库为逻辑数据库，name与server.xml中schema对应<br>— dataNode    分片信息，也就是分库相关配置<br>— dataHost    物理数据库，真正存储数据的数据库  </p>
-<ol>
-<li>schema标签<br>&emsp;&emsp;schema标签用来定义mycat实例中的逻辑库，mycat可以有多个逻辑库，每个逻辑库都有自己的相关配置。可以使用schema标签来划分这些不同的逻辑库<br>&emsp;&emsp;如果不配置schema标签，所有表的配置会属于同一个默认的逻辑库。逻辑库的概念和MySql的database的概念一样，我们在查询两个不同逻辑库中的表的时候，需要切换到该逻辑库下进行查询。 <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">schema</span> <span class="attr">name</span>=<span class="string">&quot; &quot;</span> <span class="attr">checkSQLschema</span>=<span class="string">&quot;false&quot;</span> <span class="attr">sqlMaxLimit</span>=<span class="string">&quot;100&quot;</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">schema</span>&gt;</span></span><br><span class="line"><span class="comment">&lt;!--</span></span><br><span class="line"><span class="comment">name        逻辑数据库名,与server.xml中的schema对应</span></span><br><span class="line"><span class="comment">checkSQLschema     数据库前缀相关设置，当该值为true时，例如我们执行语句select * from TESTDB.company 。mycat会把语句修改为 select * from company 去掉TESTDB。</span></span><br><span class="line"><span class="comment">sqlMaxLimit        当该值设置为某个数值时，每条执行的sql语句，如果没有加上limit语句，Mycat会自动加上对应的值。不写的话，默认返回所有的值。</span></span><br><span class="line"><span class="comment">--&gt;</span></span><br></pre></td></tr></table></figure></li>
-<li><p>table标签<br>—name  表名，物理数据库中表名<br>—dataNode  表存储到哪些节点，多个节点用逗号分隔。节点为下文dataNode设置的name<br>—primaryKey主键字段名，自动生成主键时需要设置<br>—autoIncrement 是否自增<br>—rule  分片规则名，具体规则下文rule详细介绍<br>—type 该属性定义了逻辑表的类型，目前逻辑表只有全局表和普通表。全局表： global 普通表：无<br>&emsp;&emsp;注：全局表查询任意节点，普通表查询所有节点效率低<br>—autoIncrement mysql对非自增长主键，使用last_insert_id() 是不会返回结果的，只会返回0。所以，只有定义了自增长主键的表，才可以用last_insert_id()返回主键值。<br>mycat提供了自增长主键功能，但是对应的mysql节点上数据表，没有auto_increment,那么在mycat层调用last_insert_id()也是不会返回结果的。<br>—needAddLimit 指定表是否需要自动的在每个语句后面加上limit限制，由于使用了分库分表，数据量有时候会特别庞大，这时候执行查询语句，忘记加上limt就会等好久，所以mycat自动为我们加上了limit 100，这个属性默认为true，可以自己设置为false禁用。如果使用这个功能，最好配合使用数据库模式的全局序列。<br>—subTables 分表，分表目前不支持Join。</p>
- <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">“test”</span> <span class="attr">primaryKey</span>=<span class="string">&quot;ID&quot;</span> <span class="attr">autoIncrement</span>=<span class="string">&quot;true&quot;</span> <span class="attr">dataNode</span>=<span class="string">“dn1,dn2,dn3”</span> /&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">“mine”</span> <span class="attr">primaryKey</span>=<span class="string">&quot;ID&quot;</span> <span class="attr">autoIncrement</span>=<span class="string">&quot;true&quot;</span> <span class="attr">dataNode</span>=<span class="string">“dn1,dn2,dn3”</span> /&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">“new”</span> <span class="attr">primaryKey</span>=<span class="string">&quot;ID&quot;</span> <span class="attr">autoIncrement</span>=<span class="string">&quot;true&quot;</span> <span class="attr">dataNode</span>=<span class="string">“dn1,dn2,dn3”</span> /&gt;</span></span><br></pre></td></tr></table></figure>
-</li>
-<li><p>childTable标签<br>—childTable 标签用于定义 E-R 分片的子表。通过标签上的属性与父表进行关联。<br>—name    子表的名称<br>—joinKey    子表中字段的名称<br>—parentKey    父表中字段名称<br>—primaryKey    同Table<br>—needAddLimit    同Table </p>
- <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">&quot;customer&quot;</span> <span class="attr">primaryKey</span>=<span class="string">&quot;ID&quot;</span> <span class="attr">dataNode</span>=<span class="string">&quot;dn1,dn2&quot;</span> <span class="attr">rule</span>=<span class="string">&quot;sharding-by-intfile&quot;</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">childTable</span> <span class="attr">name</span>=<span class="string">&quot;c_a&quot;</span> <span class="attr">primaryKey</span>=<span class="string">&quot;ID&quot;</span> <span class="attr">joinKey</span>=<span class="string">&quot;customer_id&quot;</span> <span class="attr">parentKey</span>=<span class="string">&quot;id&quot;</span> /&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">table</span>&gt;</span></span><br></pre></td></tr></table></figure>
-</li>
-<li><p>dataNode标签<br>&emsp;&emsp;datanode标签定义了mycat中的数据节点，也就是我们所说的数据分片。一个datanode标签就是一个独立的数据分片。<br>&emsp;&emsp;例子中的表述的意思为，使用名字为localhost1数据库实例上的db1物理数据库，这就组成一个数据分片，最后我们用dn1来标示这个分片。<br>—name    定义数据节点的名字，这个名字需要唯一。我们在table标签上用这个名字来建立表与分片对应的关系<br>—dataHost    用于定义该分片属于哪个数据库实例，属性与datahost标签上定义的name对应<br>—database    用于定义该分片属于数据库实例上 的具体库。  </p>
- <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">dataNode</span> <span class="attr">name</span>=<span class="string">&quot;dn1&quot;</span> <span class="attr">dataHost</span>=<span class="string">&quot;localhost1&quot;</span> <span class="attr">database</span>=<span class="string">&quot;db1&quot;</span> /&gt;</span></span><br></pre></td></tr></table></figure></li>
-<li>dataHost标签<br>—name    唯一标示dataHost标签，供上层使用<br>—maxCon    指定每个读写实例连接池的最大连接。<br>—minCon    指定每个读写实例连接池的最小连接，初始化连接池的大小<br>—balance    负载均称类型<br>&emsp;&emsp;balance=”0”：不开启读写分离机制，所有读操作都发送到当前可用的writeHost上<br>&emsp;&emsp;balance=”1”：全部的readHost与stand by writeHost参与select语句的负载均衡，简单的说，当双主双从模式（M1-S1，M2-S2 并且M1 M2互为主备），正常情况下，M2,S1,S2都参与select语句的负载均衡。<br>&emsp;&emsp;balance=”2”：所有读操作都随机的在writeHost、readHost上分发<br>&emsp;&emsp;balance=”3”：所有读请求随机的分发到writeHst对应的readHost执行，writeHost不负担读写压力。（1.4之后版本有）<br>—writeType    负载均衡类型。<br>&emsp;&emsp;writeType=”0”, 所有写操作发送到配置的第一个 writeHost，第一个挂了切到还生存的第二个writeHost，重新启动后已切换后的为准，切换记录在配置文件中:dnindex.properties .<br>&emsp;&emsp;writeType=”1”，所有写操作都随机的发送到配置的 writeHost。1.5以后版本废弃不推荐。<br>—switchType<br>&emsp;&emsp;-1 不自动切换<br>&emsp;&emsp;1 默认值 自动切换<br>&emsp;&emsp;2 基于MySql主从同步的状态决定是否切换，心跳语句为 show slave status<br>&emsp;&emsp;3 基于 MySQL galary cluster 的切换机制（适合集群）（1.4.1）,心跳语句为 show status like ‘wsrep%’<br>—dbType 指定后端链接的数据库类型目前支持二进制的mysql协议，还有其他使用jdbc链接的数据库，例如：mongodb，oracle，spark等<br>—dbDriver    指定连接后段数据库使用的driver，目前可选的值有native和JDBC。使用native的话，因为这个值执行的是二进制的mysql协议，所以可以使用mysql和mariadb，其他类型的则需要使用JDBC驱动来支持。<br>1.6版本开始支持postgresql的原始协议。<br>如果使用JDBC的话需要符合JDBC4标准的驱动jar 放到mycat\lib目录下，并检查驱动jar包中包括如下目录结构文件 META-INF\services\java.sql.Driver。 在这个文件写上具体的driver类名，例如com.mysql.jdbc.Driver<br>—tempReadHostAvailable<br>&emsp;&emsp;如果配置了这个属性 writeHost 下面的 readHost 仍旧可用，默认 0 可配置（0、1）。 <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">dataHost</span> <span class="attr">name</span>=<span class="string">&quot;localhost1&quot;</span> <span class="attr">maxCon</span>=<span class="string">&quot;1000&quot;</span> <span class="attr">minCon</span>=<span class="string">&quot;10&quot;</span> <span class="attr">balance</span>=<span class="string">&quot;0&quot;</span> <span class="attr">writeType</span>=<span class="string">&quot;0&quot;</span> <span class="attr">dbType</span>=<span class="string">&quot;mysql&quot;</span> <span class="attr">dbDriver</span>=<span class="string">&quot;native&quot;</span> <span class="attr">switchType</span>=<span class="string">&quot;1&quot;</span> <span class="attr">slaveThreshold</span>=<span class="string">&quot;100&quot;</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">heartbeat</span>&gt;</span>select user()<span class="tag">&lt;/<span class="name">heartbeat</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">writeHost</span> <span class="attr">host</span>=<span class="string">&quot;hostM1&quot;</span> <span class="attr">url</span>=<span class="string">&quot;192.168.1.100:3306&quot;</span> <span class="attr">user</span>=<span class="string">&quot;root&quot;</span> <span class="attr">password</span>=<span class="string">&quot;123456&quot;</span>&gt;</span></span><br><span class="line">        <span class="tag">&lt;<span class="name">readHost</span> <span class="attr">host</span>=<span class="string">&quot;hostS1&quot;</span> <span class="attr">url</span>=<span class="string">&quot;192.168.1.101:3306&quot;</span> <span class="attr">user</span>=<span class="string">&quot;root&quot;</span> <span class="attr">password</span>=<span class="string">&quot;123456&quot;</span> /&gt;</span></span><br><span class="line">    <span class="tag">&lt;/<span class="name">writeHost</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">dataHost</span>&gt;</span></span><br></pre></td></tr></table></figure></li>
-<li><p>heartbeat标签<br>&emsp;&emsp;这个标签内指明用于和后端数据库进行心跳检查的语句。例如：MYSQL 可以使用 select user()，Oracle 可以使用 select 1 from dual 等。<br>&emsp;&emsp;这个标签还有一个 connectionInitSql 属性，主要是当使用 Oracla 数据库时，需要执行的初始化 SQL 语句就放到这里面来。例如：alter session set nls_date_format=’yyyy-mm-dd hh24:mi:ss ‘<br>1.4 主从切换的语句必须是：show slave status  </p>
-</li>
-<li><p>writeHost /readHost 标签<br>&emsp;&emsp;这两个标签都指定后端数据库的相关配置，用于实例化后端连接池。唯一不同的是，writeHost 指定写实例、readHost 指定读实例。<br>&emsp;&emsp;在一个 dataHost 内可以定义多个 writeHost 和 readHost。但是，如果 writeHost 指定的后端数据库宕机，那么这个 writeHost 绑定的所有 readHost 都将不可用。<br>&emsp;&emsp;另一方面，由于这个 writeHost 宕机，系统会自动的检测到，并切换到备用的 writeHost 上去。这两个标签的属性相同，这里就一起介绍。<br>—host    用于标识不同实例，一般 writeHost 我们使用<em>M</em>1，readHost我们用<em>S</em>1。<br>—url    后端实例连接地址。Native：地址：端口 JDBC：jdbc的url<br>—password    后端存储实例需要的密码<br>—user    后端存储实例需要的用户名字<br>—weight    权重 配置在 readhost 中作为读节点的权重<br>—usingDecrypt    是否对密码加密，默认0。具体加密方法看官方文档。  </p>
-</li>
-</ol>
-</li>
-</ol>
-]]></content>
-      <categories>
-        <category>middleware</category>
-      </categories>
-      <tags>
-        <tag>middleware</tag>
-        <tag>linux</tag>
-        <tag>mycat</tag>
-        <tag>db</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>ElasticSearch学习笔记（一）</title>
-    <url>/2018/12/04/using/middleware/elk-1/</url>
-    <content><![CDATA[<h2 id="ElasticSearch-ES-有关的基本概念"><a href="#ElasticSearch-ES-有关的基本概念" class="headerlink" title="ElasticSearch(ES)有关的基本概念"></a>ElasticSearch(ES)有关的基本概念</h2><ol>
-<li>Cluster和Node<br>&emsp;&emsp;ES中的Cluster是对外提供搜索服务的集群，组成这个Cluster的各个节点叫做Node。<br>&emsp;&emsp;Node分类：IndexNode（提供读写），DataNode（只提供数据存储和访问，负载均衡等），节点之间关系对等，弱化的Master节点提供维护集群状态的功能</li>
-<li>Shards<br>&emsp;&emsp;ES将一个完整的索引分成若干部分，每一个部分就是一个Shards，每一个Shards实际上是一个基于Lucene的索引，Shards数量一遍在创建索引前指定，且索引创建后不能修改，es的检索实际上是对多个Shards上的搜索结果的合并</li>
-<li>Replicas<br>&emsp;&emsp;Replicas是索引的冗余备份，可用于放置数据丢失或用来做负载均衡</li>
-<li>Recovery<br>&emsp;&emsp;在有节点加入或者退出集群的时候，ES会对索引分片Shards重新分配</li>
-<li>River<br>&emsp;&emsp;River是一个运行在集群内部的插件，用来从外部获取异构数据，然后在ES里创建索引。常见的有RabbitMQ river Plugin、MongoDB river Plugin等</li>
-<li>Gateway<br>&emsp;&emsp;是ES索引数据快照的存储方式，当ES关机重启的时候，就会从Gateway中读取索引快照</li>
-<li>Discovery.zen<br>&emsp;&emsp;Es的自动发现节点机制，用来实现节点自动发现和Master节点选举，Master节点负责处理及节点的加入和退出以及分片Shards的重新分配</li>
-<li>Transport<br>&emsp;&emsp;代表ES内部节点或者集群与客户端的交互方式。默认TCP，同时支持HTTP（JSON）、Thrift、Servlet等</li>
-<li>Index、Type、Document、Field<br> &emsp;&emsp;Index是ES存储数据的地方，类似RDBMS的Database;Type类似于table;Document是一行数据，可以有不同字段集合;Field是最小存储单位</li>
-<li>Mapping<br>&emsp;&emsp;定义索引下Type的字段处理规则</li>
-</ol>
-<h2 id="ES默认端口"><a href="#ES默认端口" class="headerlink" title="ES默认端口"></a>ES默认端口</h2><p>9200 是HTTP端口，9300 是Transport端口</p>
-<h2 id="ES索引机器构建"><a href="#ES索引机器构建" class="headerlink" title="ES索引机器构建"></a>ES索引机器构建</h2><p>&emsp;&emsp;ES是基于Luence构建的，采用倒排索引机制，将文件封装为索引，将文本信息切分为成为Token的信息单元，再利用这些Token构建倒排索引。</p>
-]]></content>
-      <categories>
-        <category>elk</category>
-      </categories>
-      <tags>
-        <tag>linux</tag>
-        <tag>elk</tag>
-        <tag>midedleware</tag>
-        <tag>log</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>nginx的使用（一）-- 简单的安装使用</title>
-    <url>/2018/08/25/using/middleware/nginx-1/</url>
-    <content><![CDATA[<h2 id="一、nginx简介"><a href="#一、nginx简介" class="headerlink" title="一、nginx简介"></a>一、nginx简介</h2><h4 id="1、nginx是什么"><a href="#1、nginx是什么" class="headerlink" title="1、nginx是什么"></a>1、nginx是什么</h4><p>Nginx (engine x) 是一个高性能的HTTP和反向代理服务，也是一个IMAP/POP3/SMTP服务。其特点是占有内存少，并发能力强，事实上nginx的并发能力确实在同类型的网页服务器中表现较好。</p>
-<h4 id="2、nginx可以用来做什么（不加载第三方模块）"><a href="#2、nginx可以用来做什么（不加载第三方模块）" class="headerlink" title="2、nginx可以用来做什么（不加载第三方模块）"></a>2、nginx可以用来做什么（不加载第三方模块）</h4><ol>
-<li>反向代理</li>
-<li>负载均衡</li>
-<li>HTTP服务器（包含动静分离）</li>
-<li>正向代理</li>
-<li>缓存</li>
-</ol>
-<h2 id="二、nginx安装以及简单的配置"><a href="#二、nginx安装以及简单的配置" class="headerlink" title="二、nginx安装以及简单的配置"></a>二、nginx安装以及简单的配置</h2><h4 id="1、安装nginx（环境-centos7）"><a href="#1、安装nginx（环境-centos7）" class="headerlink" title="1、安装nginx（环境 centos7）"></a>1、安装nginx（环境 centos7）</h4><p>采取最简单的方法，yum install nginx -y</p>
-<h4 id="2、配置nginx"><a href="#2、配置nginx" class="headerlink" title="2、配置nginx"></a>2、配置nginx</h4><p>① 修改user为root（你用来启动nginx的账户）<br>② 添加转发服务器<br><figure class="highlight vim"><table><tr><td class="code"><pre><span class="line">upstream web_server&#123; # 名字随便起</span><br><span class="line">   server <span class="number">127.0</span>.<span class="number">0.1</span>:<span class="number">8080</span>  max_fails=<span class="number">1</span>  fail_timeout=<span class="number">10</span>s;  #Tomcat服务器<span class="number">1</span> ip</span><br><span class="line">   server <span class="number">127.0</span>.<span class="number">0.2</span>:<span class="number">8080</span>  max_fails=<span class="number">1</span>  fail_timeout=<span class="number">10</span>s;  #Tomcat服务器<span class="number">2</span> ip</span><br><span class="line">   #注意服务器的ip以及端口不要重复</span><br><span class="line">   ...</span><br><span class="line">&#125;</span><br><span class="line">server &#123;</span><br><span class="line">    listen       <span class="number">80</span> default_server;</span><br><span class="line">    listen       [::]:<span class="number">80</span> default_server;</span><br><span class="line">    server_name  _;</span><br><span class="line">    root         /usr/share/nginx/html;</span><br><span class="line">    # Load configuration <span class="keyword">files</span> <span class="keyword">for</span> the default server block.</span><br><span class="line">    include /etc/nginx/default.d/*.<span class="keyword">conf</span>;</span><br><span class="line">    location / &#123;</span><br><span class="line">        proxy_pass  http://web_server;   #和上边定义的upstream 对应起来</span><br><span class="line">        proxy_connect_timeout <span class="number">10</span>;</span><br><span class="line">        proxy_read_timeout  <span class="number">10</span>;</span><br><span class="line">        proxy_send_timeout  <span class="number">10</span>;</span><br><span class="line">    &#125;</span><br><span class="line">    error_page <span class="number">404</span> /<span class="number">404</span>.html;</span><br><span class="line">        location = /<span class="number">40</span><span class="keyword">x</span>.html &#123;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    error_page <span class="number">500</span> <span class="number">502</span> <span class="number">503</span> <span class="number">504</span> /<span class="number">50</span><span class="keyword">x</span>.html;</span><br><span class="line">        location = /<span class="number">50</span><span class="keyword">x</span>.html &#123;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure></p>
-<h4 id="3、nginx的启动、停止、重启"><a href="#3、nginx的启动、停止、重启" class="headerlink" title="3、nginx的启动、停止、重启"></a>3、nginx的启动、停止、重启</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">systemctl start nginx <span class="comment">#启动nginx</span></span><br><span class="line">systemctl stop nginx <span class="comment">#停止nginx</span></span><br><span class="line">systemctl restart nginx <span class="comment">#重新启动nginx</span></span><br><span class="line">systemctl <span class="built_in">enable</span> nginx <span class="comment">#开机启动nginx</span></span><br></pre></td></tr></table></figure>
-<h4 id="4、nginx踩过的一些坑"><a href="#4、nginx踩过的一些坑" class="headerlink" title="4、nginx踩过的一些坑"></a>4、nginx踩过的一些坑</h4><p>selinux引起的权限访问受限问题，cat /var/log/Audit/Audit.log 发现有nginx访问阻止记录<br><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">type</span>=AVC msg=audit(1416406823.013:3137): avc:  denied  &#123; search &#125; <span class="keyword">for</span>  pid=15488 <span class="built_in">comm</span>=<span class="string">&quot;nginx&quot;</span> name=<span class="string">&quot;www&quot;</span> dev=<span class="string">&quot;dm-3&quot;</span> ino=146 scontext=system_u:system_r:httpd_t:s0 tcontext=unconfined_u:object_r:user_home_dir_t:s0 tclass=<span class="built_in">dir</span></span><br></pre></td></tr></table></figure><br>解决方案1、（<font color="red">建议采用</font>）<br>设置selinux允许nginx<br><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">yum install policycoreutils-python</span><br><span class="line"><span class="built_in">cat</span> /var/log/audit/audit.log | grep nginx | grep denied | audit2allow -M mynginx</span><br><span class="line">semodule -i mynginx.pp</span><br></pre></td></tr></table></figure><br>解决方案2.1、<br>临时关闭selinux<br><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">setenforce 0  <span class="comment">#重启后失效</span></span><br></pre></td></tr></table></figure><br>解决方案2.2、<br>永久关闭selinux</p>
-<p>打开 selinux 配置文件<br><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">vim /etc/selinux/config</span><br></pre></td></tr></table></figure><br>修改 selinux 配置文件<br>将SELINUX=enforcing改为SELINUX=disabled，保存后退出<br><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment"># This file controls the state of SELinux on the system.</span></span><br><span class="line"><span class="comment"># SELINUX= can take one of these three values:</span></span><br><span class="line"><span class="comment">#     enforcing - SELinux security policy is enforced.</span></span><br><span class="line"><span class="comment">#     permissive - SELinux prints warnings instead of enforcing.</span></span><br><span class="line"><span class="comment">#     disabled - No SELinux policy is loaded.</span></span><br><span class="line">SELINUX=enforcing</span><br><span class="line"><span class="comment"># SELINUXTYPE= can take one of three two values:</span></span><br><span class="line"><span class="comment">#     targeted - Targeted processes are protected,</span></span><br><span class="line"><span class="comment">#     minimum - Modification of targeted policy. Only selected processes are protected.</span></span><br><span class="line"><span class="comment">#     mls - Multi Level Security protection.</span></span><br><span class="line">SELINUXTYPE=targeted</span><br></pre></td></tr></table></figure><br>重启电脑（<font color="red">一定重启</font>，否则无效）</p>
-]]></content>
-      <categories>
-        <category>linux</category>
-      </categories>
-      <tags>
-        <tag>linux</tag>
-        <tag>nginx</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>nginx的使用（二）-- 详细了解Nginx</title>
-    <url>/2018/09/01/using/middleware/nginx-2/</url>
-    <content><![CDATA[<h4 id="为什么使用Nginx"><a href="#为什么使用Nginx" class="headerlink" title="为什么使用Nginx"></a>为什么使用Nginx</h4><ol>
-<li>更快<br>&emsp;&emsp;主要表现在两个方面：1，正常情况下，单次请求会得到更快的响应；2，在高峰期（数以万计的并发请求），Nginx可以比其他web服务器更快地请求响应。</li>
-<li>高扩展性<br>&emsp;&emsp;它完全是由多个不同功能、 不同层次、 不同类型且耦合度低的模块组成。</li>
-<li>高可靠性<br> &emsp;&emsp;Nginx 的高可靠性来自于其核心框架代码的优秀设计、 模块设计的简单性。每个 worker进程相对独立， master 进程在 1 个 worker 进程出错时可以快速“拉起”新的 worker 子进程提供服务。</li>
-<li>低内存消耗<br> &emsp;&emsp;一般情况下， 10 000 个非活跃的 HTTP Keep-Alive 连接在 Nginx 中仅消耗 2.5MB 的内存， 这是 Nginx 支持高并发连接的基础。</li>
-<li>单机支持 10 万以上的并发连接   </li>
-<li>热部署<br> &emsp;&emsp;可以在 7×24 小时不间断服务的前提下， 升级 Nginx 的可执行文件。 当然， 它也支持不停止服务就更新配置项、 更换日志文件等功能。</li>
-<li>最自由的BSD许可协议<br> &emsp;&emsp;允许用户在自己的项目中直接使用或修改 Nginx 源码。</li>
-</ol>
-<h4 id="使用Nginx的必备软件"><a href="#使用Nginx的必备软件" class="headerlink" title="使用Nginx的必备软件"></a>使用Nginx的必备软件</h4><ol>
-<li>GCC编译器<br>&emsp;&emsp;用来编译nginx的各个模块  </li>
-<li>PCRE库<br>&emsp;&emsp;PCRE（Perl Compatible Regular Expressions， Perl 兼容正则表达式） 是由 Philip Hazel开发的函数库， 目前为很多软件所使用， 该库支持正则表达式。当然，如果不打算在nginx中使用正则表达式，那么这个就不是必需的。</li>
-<li>zlib库<br> &emsp;&emsp;zlib 库用于对 HTTP 包的内容做 gzip 格式的压缩， 如果我们在 nginx.conf 里配置了 gzip on， 并指定对于某些类型（content-type） 的 HTTP 响应使用 gzip 来进行压缩以减少网络传， 那么， 在编译时就必须把 zlib 编译进 Nginx。</li>
-<li>OpenSSL 开发库<br>&emsp;&emsp;在SSL 协议上传输 HTTP，以及使用MD5、 SHA1 等散列函数都需要OpenSSL 开发库的支持。<h4 id="运行中的Nginx进程间的关系"><a href="#运行中的Nginx进程间的关系" class="headerlink" title="运行中的Nginx进程间的关系"></a>运行中的Nginx进程间的关系</h4><center>
-<img src="https://www.zhangbohan.com.cn/images/nginx/nginx-1.png" src="ngix进程间关系" />
-</center><br>&emsp;&emsp;部署 Nginx 时都是使用一个 master 进程来管理多个worker 进程， 一般情况下， worker 进程的数量与服务器上的 CPU 核心数相等。</li>
-</ol>
-<h4 id="Nginx文件路径的常用定义"><a href="#Nginx文件路径的常用定义" class="headerlink" title="Nginx文件路径的常用定义"></a>Nginx文件路径的常用定义</h4><ol>
-<li>以 root 方式设置资源路径<br>语法： root path;<br>默认： root html;<br>配置块： http、 server、 location、 if<br>&emsp;&emsp;例如， 定义资源文件相对于 HTTP 请求的根目录。 <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line">location /download/ &#123;</span><br><span class="line">    root /opt/web/html/;</span><br><span class="line">&#125; </span><br></pre></td></tr></table></figure>
- &emsp;&emsp;在上面的配置中， 如果有一个请求的 URI 是 /download/index/test.html， 那么 Web 服务器将会返回服务器上 /opt/web/html/download/index/test.html 文件的内容。 </li>
-<li>以 alias 方式设置资源路径<br>语法： alias path;<br>配置块： location<br>&emsp;&emsp;alias 也是用来设置文件资源路径的， 它与 root 的不同点主要在于如何解读紧跟 location后面的 uri 参数， 这将会致使 alias 与 root 以不同的方式将用户请求映射到真正的磁盘文件上。 例如， 如果有一个请求的 URI 是 /conf/nginx.conf， 而用户实际想访问的文件在 /usr/local/nginx/conf/nginx.conf， 那么想要使用 alias 来进行设置的话， 可以采用如下方式： <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line">location /conf &#123;</span><br><span class="line">alias /usr/local/nginx/conf/;</span><br><span class="line">&#125; </span><br></pre></td></tr></table></figure>
- 如果用 root 设置， 那么语句如下所示： <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line">location /conf &#123;</span><br><span class="line">root /usr/local/nginx/;</span><br><span class="line">&#125; </span><br></pre></td></tr></table></figure>
- alias 后面还可以添加正则表达式， 例如： <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line">location ~ ^/test/(\w+)\.(\w+)$ &#123;</span><br><span class="line">alias /usr/local/nginx/$2/$1.$2;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
- &emsp;&emsp;这样， 请求在访问 /test/nginx.conf 时， Nginx 会返回 /usr/local/nginx/conf/nginx.conf 文件中的内容。</li>
-<li>访问首页<br>语法： index file …;<br>默认： index index.html;<br>配置块： http、 server、 location<br>&emsp;&emsp;有时， 访问站点时的 URI 是 /， 这时一般是返回网站的首页， 而这与 root 和 alias 都不同。 这里用 ngx_http_index_module 模块提供的 index 配置实现。 index 后可以跟多个文件参数， Nginx 将会按照顺序来访问这些文件， 例如：   <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line">location / &#123;</span><br><span class="line">root path;</span><br><span class="line">index /index.html /html/index.php /index.php;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure></li>
-</ol>
-]]></content>
-      <categories>
-        <category>linux</category>
-      </categories>
-      <tags>
-        <tag>linux</tag>
-        <tag>nginx</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>CCNA学习笔记一 -- 计算机网络详解</title>
-    <url>/2018/08/27/theory/ccna/ccna-1/</url>
-    <content><![CDATA[<h4 id="局域网与广域网"><a href="#局域网与广域网" class="headerlink" title="局域网与广域网"></a>局域网与广域网</h4><ol>
-<li>局域网 自己花钱买设备自己搭配服务器，带宽固定</li>
-<li>广域网 花钱租带宽</li>
+    <title>CCNA学习笔记一 -- 计算机网络详解</title>
+    <url>/2018/08/27/theory/ccna/ccna-1/</url>
+    <content><![CDATA[<h4 id="局域网与广域网"><a href="#局域网与广域网" class="headerlink" title="局域网与广域网"></a>局域网与广域网</h4><ol>
+<li>局域网 自己花钱买设备自己搭配服务器，带宽固定</li>
+<li>广域网 花钱租带宽</li>
 </ol>
 <h4 id="OSI参考模型"><a href="#OSI参考模型" class="headerlink" title="OSI参考模型"></a>OSI参考模型</h4><pre><code>↑7 应用层      能产生网络流量的应用程序
 ↑6 表示层      表示数据，处理数据 加密 压缩 等
@@ -2022,230 +1782,530 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
       </tags>
   </entry>
   <entry>
-    <title>nginx的使用（三）-- 使用gzip加速页面加载</title>
-    <url>/2019/10/18/using/middleware/nginx-3/</url>
-    <content><![CDATA[<h3 id="介绍"><a href="#介绍" class="headerlink" title="介绍"></a>介绍</h3><p>Nginx实现资源压缩的原理是通过ngx_http_gzip_module模块拦截请求，并对需要做gzip的类型做gzip，ngx_http_gzip_module是Nginx默认集成的，不需要重新编译，直接开启即可。  </p>
-<h3 id="配置说明"><a href="#配置说明" class="headerlink" title="配置说明"></a>配置说明</h3><pre><code class="lang-bash">    #$gzip_ratio计算请求的压缩率，$body_bytes_sent请求体大小
-    log_format  main  &#39;$remote_addr - $remote_user [$time_local] &quot;$host&quot; - &quot;$request&quot; &#39;
-                    &#39;$gzip_ratio - $body_bytes_sent - $request_time&#39;;
-    access_log  logs/access.log  main;
-    # 开启gzip
-    gzip off;
-    # 启用gzip压缩的最小文件，小于设置值的文件将不会压缩
-    # 当返回内容大于此值时才会使用gzip进行压缩,以K为单位,当值为0时，所有页面都进行压缩。
-    gzip_min_length 1k;
-    # gzip 压缩级别，1-9，数字越大压缩的越好，也越占用CPU时间，后面会有详细说明
-    # 随着压缩级别的升高，压缩比有所提高，但到了级别6后，很难再提高；
-    # 随着压缩级别的升高，处理时间明显变慢；
-    # gzip很消耗cpu的性能，高并发情况下cpu达到100%
-    gzip_comp_level 1;
-    # 进行压缩的文件类型。javascript有多种形式。其中的值可以在 mime.types 文件中找到。
-    gzip_types text/plain application/javascript application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png application/vnd.ms-fontobject font/ttf font/opentype font/x-woff image/svg+xml;
-    # 是否在http header中添加Vary: Accept-Encoding，建议开启
-    gzip_vary on;
-    # 禁用IE 6 gzip
-    # 通过表达式，表明哪些UA头不使用gzip压缩
-    gzip_disable &quot;MSIE [1-6]\.&quot;;
-    # 设置压缩所需要的缓冲区大小  
-    # 设置用于处理请求压缩的缓冲区数量和大小。比如32 4K表示按照内存页（one memory page）大小以4K为单位（即一个系统中内存页为4K），申请32倍的内存空间。建议此项不设置，使用默认值
-    gzip_buffers 32 4k;
-    # 设置gzip压缩针对的HTTP协议版本
-    # 用于识别http协议的版本，早期的浏览器不支持gzip压缩，用户会看到乱码，所以为了支持前期版本加了此选项。默认在http/1.0的协议下不开启gzip压缩。
-    gzip_http_version 1.0;
-</code></pre>
+    <title>CCNA学习笔记二 -- TCP/IP协议</title>
+    <url>/2018/08/27/theory/ccna/ccna-2/</url>
+    <content><![CDATA[<h4 id="DoD模型"><a href="#DoD模型" class="headerlink" title="DoD模型"></a>DoD模型</h4><p>应用层 Telent、FTP、SMTP、DNS、HTTP以及其他应用协议<br>传输层 TCP、UDP<br>网络层 IPv4、ARP、RARP、ICMP<br>网络接口 各种通信网络接口（以太网等物理网络）</p>
+<h4 id="传输层协议"><a href="#传输层协议" class="headerlink" title="传输层协议"></a>传输层协议</h4><p>可靠传输 TCP 分段传输 建立会话（消耗系统资源） 丢失重传<br>不可靠传输 UDP 一个数据包就能表达完整 屏幕广播</p>
+<h4 id="应用层协议"><a href="#应用层协议" class="headerlink" title="应用层协议"></a>应用层协议</h4><h5 id="默认端口"><a href="#默认端口" class="headerlink" title="默认端口"></a>默认端口</h5><p>http=TCP+80<br>ftp=TCP+21（接受命令、验证身份等） 20（传输数据）<br>https=TCP+443<br>SMTP=TCP+25（发邮件）<br>POP3=TCP+110（收邮件）<br>RDP=TCP+3389(远程桌面)<br>DNS=UDP+53（DNS解析）<br>IP地址访问Windows共享文件夹=TCP+445<br>计算机名访问windows共享文件夹=TCP+139<br>SQL=TCP+1433（访问数据库）<br>telnet=TCP+23</p>
+<h4 id="服务和端口的关系"><a href="#服务和端口的关系" class="headerlink" title="服务和端口的关系"></a>服务和端口的关系</h4><p>服务侦听端口<br>客户端请求服务 使用目标端口来区分（服务器根据数据包的目标端口来区分客户端）<br>服务停止 侦听的端口关闭<br>查看侦听的端口 netstat -anb|find “content”<br>检测端口  telnet ip 端口</p>
+<h4 id="网络安全"><a href="#网络安全" class="headerlink" title="网络安全"></a>网络安全</h4><p>win2003service tcp/ip筛选不影响出去的流量<br>wf.msc windows高级防火墙</p>
+<h4 id="网络层协议"><a href="#网络层协议" class="headerlink" title="网络层协议"></a>网络层协议</h4><p>IP协议 选择最佳路径的协议（RIP OSPF EIGRP BGP）<br>ICMP协议 测试网络是否畅通<br>ping 估计带宽 查看网络是否畅通 断定远程系统 每过一个路由器TTL-1<br>TTL 128 windows系统<br>TTL 64  linux系统<br>pathping 跟踪路径 计算丢包情况<br>IGMP协议 组播<br>点到点 广播 多播（组播）<br>ARP协议 将计算机的IP地址解析成MAC地址<br>数据跨网段通讯和同一网段通信过程<br>MAC地址决定了下一跳给那个设备<br>IP地址决定最终计算机</p>
+<h4 id="IP地址"><a href="#IP地址" class="headerlink" title="IP地址"></a>IP地址</h4><p>32位二进制组成</p>
+<h5 id="ip地址分类"><a href="#ip地址分类" class="headerlink" title="ip地址分类"></a>ip地址分类</h5><p>  x:network id  y:host id</p>
+<div class="table-container">
+<table>
+<thead>
+<tr>
+<th>类别</th>
+<th>功能</th>
+<th>开头</th>
+<th>个头</th>
+<th>缺省子网掩码</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>A</td>
+<td>xyyy</td>
+<td>1-127</td>
+<td>256^3-2</td>
+<td>255.0.0.0</td>
+</tr>
+<tr>
+<td>B</td>
+<td>xxyy</td>
+<td>128-191</td>
+<td>256^2-2</td>
+<td>255.255.0.0</td>
+</tr>
+<tr>
+<td>C</td>
+<td>xxxy</td>
+<td>192-223</td>
+<td>256-2</td>
+<td>255.255.255.0</td>
+</tr>
+<tr>
+<td>D</td>
+<td>组播</td>
+<td>224-239</td>
+</tr>
+<tr>
+<td>E</td>
+<td>研究</td>
+<td>240-255</td>
+</tr>
+</tbody>
+</table>
+</div>
+<h5 id="保留的私网地址"><a href="#保留的私网地址" class="headerlink" title="保留的私网地址"></a>保留的私网地址</h5><p>A 10.0.0.0<br>B 172.16.0.0-172.31.0.0<br>C 192.168.0.0-192.168.255.0</p>
+<h5 id="本地环回地址"><a href="#本地环回地址" class="headerlink" title="本地环回地址"></a>本地环回地址</h5><p>127.0.0.1  ping通过表示TCP/IP协议安装正常<br>169.254.0.0 DHCP获取网络地址未果的时候得到的地址</p>
+]]></content>
+      <categories>
+        <category>net</category>
+      </categories>
+      <tags>
+        <tag>ccna</tag>
+        <tag>net</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>Linux指令记录合集（长期更新）</title>
+    <url>/2018/08/30/using/linux/linux-command/</url>
+    <content><![CDATA[<p>此命令合集适合于Centos <font color="#40B245">7</font></p>
+<h4 id="systemctl"><a href="#systemctl" class="headerlink" title="systemctl"></a>systemctl</h4><h5 id="服务相关指令"><a href="#服务相关指令" class="headerlink" title="服务相关指令"></a>服务相关指令</h5><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">systemctl start service-name        <span class="comment">#启动某服务</span></span><br><span class="line">systemctl stop service-name         <span class="comment">#停止某服务</span></span><br><span class="line">systemctl restart service-name      <span class="comment">#重启某服务</span></span><br><span class="line">systemctl <span class="built_in">enable</span> service-name       <span class="comment">#设置开机自动启动某服务</span></span><br><span class="line">systemctl <span class="built_in">disable</span> service-name      <span class="comment">#设置开机停止自动启动某服务</span></span><br><span class="line">systemctl list-units --<span class="built_in">type</span>=service <span class="comment">#查看所有已启动的服务</span></span><br><span class="line">systemctl list-unit-files           <span class="comment">#查看已经安装的所有服务</span></span><br></pre></td></tr></table></figure>
+<h5 id="添加程序到服务"><a href="#添加程序到服务" class="headerlink" title="添加程序到服务"></a>添加程序到服务</h5><p>systemctl脚本存放在:/usr/lib/systemd/<br>&emsp;&emsp;[Unit]部分主要是对这个服务的说明，内容包括Description和After，Description 用于描述服务，After用于描述服务类别<br>&emsp;&emsp;[Service]部分是服务的关键，是服务的一些具体运行参数的设置.<br>&emsp;&emsp;Type=forking是后台运行的形式，<br>&emsp;&emsp;User=users是设置服务运行的用户,<br>&emsp;&emsp;Group=users是设置服务运行的用户组,<br>&emsp;&emsp;PIDFile为存放PID的文件路径，<br>&emsp;&emsp;ExecStart为服务的具体运行命令,<br>&emsp;&emsp;ExecReload为重启命令，<br>&emsp;&emsp;ExecStop为停止命令，<br>&emsp;&emsp;PrivateTmp=True表示给服务分配独立的临时空间<br>    注意：[Service]部分的启动、重启、停止命令全部要求使用绝对路径，使用相对路径则会报错！<br>    [Install]部分是服务安装的相关设置，可设置为多用户的  </p>
+<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">#以tomcat为例</span></span><br><span class="line"><span class="comment">#vim /usr/lib/systemd/system/tomcat.service</span></span><br><span class="line"></span><br><span class="line">[Unit]</span><br><span class="line">Description=java tomcat project</span><br><span class="line">After=tomcat.service</span><br><span class="line">  </span><br><span class="line">[Service]</span><br><span class="line">Type=forking</span><br><span class="line">User=<span class="built_in">users</span></span><br><span class="line">Group=<span class="built_in">users</span></span><br><span class="line">PIDFile=/usr/local/tomcat/tomcat.pid</span><br><span class="line">ExecStart=/usr/local/tomcat/bin/startup.sh</span><br><span class="line">ExecReload=</span><br><span class="line">ExecStop=/usr/local/tomcat/bin/shutdown.sh</span><br><span class="line">PrivateTmp=<span class="literal">true</span></span><br><span class="line">  </span><br><span class="line">[Install]</span><br><span class="line">WantedBy=multi-user.target</span><br></pre></td></tr></table></figure>
+<h4 id="firewall-cmd"><a href="#firewall-cmd" class="headerlink" title="firewall-cmd"></a>firewall-cmd</h4><p>防火墙相关</p>
+<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">firewall-cmd --add-port=port-number/protocols --zone=zone-name --permanent <span class="comment">#在zone-name区域永久开启protocol协议的port-number端口</span></span><br><span class="line">firewall-cmd --zone=public --list-all   <span class="comment"># 显示所有公共区域（public）</span></span><br></pre></td></tr></table></figure>
+<h4 id="ln"><a href="#ln" class="headerlink" title="ln"></a>ln</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">ln</span> -s <span class="built_in">source</span> <span class="built_in">link</span>  <span class="comment">#创建一个指向source的link（快捷方式）</span></span><br></pre></td></tr></table></figure>
+<h4 id="后台运行命令"><a href="#后台运行命令" class="headerlink" title="后台运行命令"></a>后台运行命令</h4><ol>
+<li>&amp;<br> &emsp;&emsp;当在前台运行某个作业时，终端被该作业占据；可以在命令后面加上&amp; 实现后台运行。例如：sh test.sh &amp; 适合在后台运行的命令有f i n d、费时的排序及一些s h e l l脚本。在后台运行作业时要当心：需要用户交互的命令不要放在后台执行，因为这样你的机器就会在那里傻等。不过，作业在后台运行一样会将结果输出到屏幕上，干扰你的工作。如果放在后台运行的作业会产生大量的输出，最好使用下面的方法把它的输出重定向到某个文件中： <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">command</span>  &gt;  out.file  2&gt;&amp;1  &amp;   <span class="comment">#所有的标准输出和错误输出都将被重定向到一个叫做out.file 的文件中。</span></span><br></pre></td></tr></table></figure></li>
+<li>2&gt;&amp;1解析<br> &emsp;&emsp;2&gt;&amp;1 是将标准出错重定向到标准输出，这里的标准输出已经重定向到了out.file文件，即将标准出错也输出到out.file文件中。最后一个&amp;， 是让该命令在后台执行。<br> &emsp;&emsp;试想2&gt;1代表什么，2与&gt;结合代表错误重定向，而1则代表错误重定向到一个文件1，而不代表标准输出；换成2&gt;&amp;1，&amp;与1结合就代表标准输出了，就变成错误重定向到标准输出.</li>
+<li>nohup<br> &emsp;&emsp;使用&amp;命令后，作业被提交到后台运行，当前控制台没有被占用，但是一但把当前控制台关掉(退出帐户时)，作业就会停止运行。nohup命令可以在你退出帐户之后继续运行相应的进程。nohup就是不挂起的意思( no hang up)。该命令的一般形式为： <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">nohup</span> <span class="built_in">command</span> &amp;  <span class="comment">#在缺省情况下该作业的所有输出都被重定向到一个名为nohup.out的文件中，除非另外指定了输出文件：</span></span><br><span class="line"><span class="built_in">nohup</span> <span class="built_in">command</span> &gt; myout.file 2&gt;&amp;1 &amp;</span><br><span class="line"><span class="built_in">nohup</span> <span class="built_in">command</span> &gt; myout.file 2&gt;&amp;1 &amp; <span class="built_in">echo</span> $! &gt; pid <span class="comment">#将pid号存储到文件中</span></span><br></pre></td></tr></table></figure></li>
+<li>ctrl + z<br> &emsp;&emsp;可以将一个正在前台执行的命令放到后台，并且处于暂停状态。</li>
+<li>jobs<br> &emsp;&emsp;查看当前有多少在后台运行的命令。  <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">jobs</span> -l <span class="comment">#可显示所有任务的PID，jobs的状态可以是running, stopped, Terminated。但是如果任务被终止了（kill），shell 从当前的shell环境已知的列表中删除任务的进程标识。</span></span><br></pre></td></tr></table></figure>
+</li>
+</ol>
+<h4 id="硬件信息查看"><a href="#硬件信息查看" class="headerlink" title="硬件信息查看"></a>硬件信息查看</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">cat</span> /proc/cpuinfo |grep <span class="string">&quot;physical id&quot;</span>|<span class="built_in">sort</span>|<span class="built_in">uniq</span>|<span class="built_in">wc</span> -l    <span class="comment">#查看物理cpu个数</span></span><br><span class="line"><span class="built_in">cat</span> /proc/cpuinfo |grep <span class="string">&quot;cpu cores&quot;</span>|<span class="built_in">wc</span> -l       <span class="comment">#查看每个物理cpu中的core个数</span></span><br><span class="line"><span class="built_in">cat</span> /proc/cpuinfo |grep <span class="string">&quot;processor&quot;</span>|<span class="built_in">wc</span> -l       <span class="comment">#逻辑cpu的个数</span></span><br></pre></td></tr></table></figure>
+<h4 id="性能信息查看"><a href="#性能信息查看" class="headerlink" title="性能信息查看"></a>性能信息查看</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">top         <span class="comment">#性能监控程序</span></span><br><span class="line">free -m     <span class="comment">#查看内存使用情况</span></span><br></pre></td></tr></table></figure>
+<h4 id="保存程序运行pid到文件"><a href="#保存程序运行pid到文件" class="headerlink" title="保存程序运行pid到文件"></a>保存程序运行pid到文件</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">##通过命令行启动进程，然后通过ps ,grep, awk 关键字获取对应pid</span></span><br><span class="line">ps -ef|grep s |grep -v grep |awk <span class="string">&#x27;&#123;print $2&#125;&#x27;</span> &gt; process.PIDFile</span><br><span class="line"><span class="comment">###如果是使用nohup创建，查看当前shell最后一个后台进程pid  $!</span></span><br><span class="line"><span class="comment">##注意，下面的命令要放到sh文件里面执行，不能从命令行执行**</span></span><br><span class="line"><span class="built_in">nohup</span> <span class="built_in">command</span>  &amp; <span class="built_in">echo</span> $! &gt; process.pid</span><br><span class="line"><span class="comment"># 既写入文件又输出到标准输出</span></span><br><span class="line"><span class="built_in">nohup</span> <span class="built_in">command</span>  &amp; <span class="built_in">echo</span> $!|<span class="built_in">tee</span> process.pid</span><br></pre></td></tr></table></figure>
+<h4 id="修改开机启动模式"><a href="#修改开机启动模式" class="headerlink" title="修改开机启动模式"></a>修改开机启动模式</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">systemctl set-default graphical.target <span class="comment">#由命令行模式更改为图形界面模式</span></span><br><span class="line">systemctl set-default multi-user.target <span class="comment">#由图形界面模式更改为命令行模式</span></span><br></pre></td></tr></table></figure>
+<h4 id="解压tar-gz"><a href="#解压tar-gz" class="headerlink" title="解压tar.gz"></a>解压tar.gz</h4><p>tar命令说明：<br>&emsp;&emsp;语法：tar [主选项+辅选项] 文件或目录<br>&emsp;&emsp;使用该命令时，主选项必须有，它告诉tar要做什么事情，辅选项是辅助使用的，可以选用。<br>主选项：【一条命令以下5个参数只能有一个】<br>&emsp;&emsp;-c: —create 新建一个压缩文档，即打包<br>&emsp;&emsp;-x: —extract,—get解压文件<br>&emsp;&emsp;-t: —list,查看压缩文档里的所有内容<br>&emsp;&emsp;-r:—append 向压缩文档里追加文件<br>&emsp;&emsp;-u:—update 更新原压缩包中的文件<br>辅助选项：<br>&emsp;&emsp;-z:是否同时具有gzip的属性？即是否需要用gzip压缩或解压？一般格式为x.tar.gz或xx.tgz<br>&emsp;&emsp;-j：是否同时具有bzip2的属性？即是否需要用bzip2压缩或解压？一般格式为x.tar.bz2<br>&emsp;&emsp;-v:显示操作过程！这个参数很常用<br>&emsp;&emsp;-f：使用文档名，注意，在f之后要立即接文档名，不要再加其他参数！<br>&emsp;&emsp;-C:切换到指定目录<br>&emsp;&emsp;—exclude FILE:在压缩过程中，不要将FILE打包  </p>
+<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">tar -zxvf xxx.tar.gz -C path</span><br></pre></td></tr></table></figure>
+<h4 id="配置环境变量"><a href="#配置环境变量" class="headerlink" title="配置环境变量"></a>配置环境变量</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">vim /etc/profile    <span class="comment">#修改环境变量文件内容  export xx_home=path</span></span><br><span class="line"><span class="built_in">source</span> /etc/profile <span class="comment">#使环境变量生效</span></span><br></pre></td></tr></table></figure>]]></content>
+      <categories>
+        <category>linux</category>
+      </categories>
+      <tags>
+        <tag>linux</tag>
+        <tag>command</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>CCNA学习笔记三 -- 路由和交换</title>
+    <url>/2018/08/28/theory/ccna/ccna-3/</url>
+    <content><![CDATA[<h4 id="网络畅通的条件"><a href="#网络畅通的条件" class="headerlink" title="网络畅通的条件"></a>网络畅通的条件</h4><p>数据包能去能回<br>沿途的路由器必须知道到目标地址如何转发<br>沿途的路由器必须知道回来的数据包如何转发  </p>
+<p>路由器直连的网络 不用告诉路由器如何转发<br>路由器没有直连的网络 管理员需要告诉路由器到目标网络如何转发 即添加静态路由<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ip route 192.168.1.0 255.255.255.0 192.268.2.0  设置数据包 到192.168.1.0/24的数据包下一跳给192.168.2.0</span><br><span class="line">(config)#tracroute ip_address 跟踪数据包路径</span><br><span class="line">#show ip route 查看路由表</span><br><span class="line">(config)#no ip route 192.168.1.0 255.255.255.0 删除路由表</span><br><span class="line">windows上添加路由表 route add ip_adress mask ip_web</span><br><span class="line">windows查看路由表 netstat-r    route print </span><br></pre></td></tr></table></figure></p>
+<h4 id="动态路由"><a href="#动态路由" class="headerlink" title="动态路由"></a>动态路由</h4><p>优先级 直连0 静态路由1 eigp90  rip120<br>RIP协议 跳数判断，周期性（30s）更新路由表，最大跳数16跳<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#router rip  启用rip协议  </span><br><span class="line">(config-router)#network 192.168.1.0 该网段参与rip协议  </span><br><span class="line">#debug ip rip 显示rip协议信息</span><br><span class="line">#undebug all  关闭rip协议信息显示</span><br><span class="line">#show ip protocols 显示应用协议</span><br><span class="line">EIGP协议 优先级高于RIP</span><br><span class="line">(config)#router eigp 10  启用eigp协议,相同编号路由器才可以交换路由信息</span><br><span class="line">(config-router)#network 192.168.1.0 该网段参与eigp协议</span><br></pre></td></tr></table></figure></p>
+<h4 id="交换"><a href="#交换" class="headerlink" title="交换"></a>交换</h4><p>集线器 不安全、冲突域、带宽共享<br>交换机 基于目标MAC地址转发、学习MAC地址、端口独享带宽、没有冲突、广播会出问题<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#show mac-address-table 显示MAC地址表</span><br><span class="line">  #config terminal </span><br><span class="line">  (config)#interrface fastEthernet 0/4</span><br><span class="line">  (config-if)#switchport mode access 接机算机的接口</span><br><span class="line">  (config-if)#switchport port-security 启用安全</span><br><span class="line">  (config-if)#switchport port-security violation shutdown 违反安全规则down掉</span><br><span class="line">  (config-if)#switchport port-security maxium 2 限制连接数量</span><br><span class="line">  (config)#interrface range fastEthernet 0/1 - 24 选中1-24个口</span><br><span class="line">  (config-if-range)#switchport port-security mac-adddress sticky MAC地址终止学习</span><br></pre></td></tr></table></figure></p>
+<h4 id="生成树协议"><a href="#生成树协议" class="headerlink" title="生成树协议"></a>生成树协议</h4><p> 为了高可用局域网交换机连接有了环路<br>为了阻断网络中的广播有了生成树协议<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#show spanning-tree 查看交换机端口以及生成树状态</span><br><span class="line">(config)#spanning-tree vlan 1 priority 4096更改路由器优先级为4096，值越小优先级越高</span><br><span class="line">(config)#no spanning-tree vlan 1 关闭生成树协议</span><br></pre></td></tr></table></figure></p>
+]]></content>
+      <categories>
+        <category>net</category>
+      </categories>
+      <tags>
+        <tag>ccna</tag>
+        <tag>net</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>CCNA学习笔记四 -- VLAN</title>
+    <url>/2018/08/28/theory/ccna/ccna-4/</url>
+    <content><![CDATA[<h4 id="VLAN虚拟局域网"><a href="#VLAN虚拟局域网" class="headerlink" title="VLAN虚拟局域网"></a>VLAN虚拟局域网</h4><p>&emsp;&emsp;VLAN是交换机组网才有的概念，按部门或管理的要求来组网，而不是按照位置组网，更灵活，安全<br>一个VLAN=一个广播域=一个网段<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#show vlan 查看VLAN</span><br><span class="line">(config)#vlan 2 创建VLAN2</span><br><span class="line">(config)#interrface range fastEthernet 0/13 - 24 选中13-24接口</span><br><span class="line">(config-if-range)#switchport mode access 设置计算机接口</span><br><span class="line">(config-if-range)#switchport access vlan 2 设置为vlan2</span><br></pre></td></tr></table></figure></p>
+<h6 id="单臂路由器实现VLAN间路由"><a href="#单臂路由器实现VLAN间路由" class="headerlink" title="单臂路由器实现VLAN间路由"></a>单臂路由器实现VLAN间路由</h6><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#interface gigabitEthernet 1/1 打开Gbit1/1接口</span><br><span class="line">(config-if)#switchport mode trunk 设置干道链路 </span><br></pre></td></tr></table></figure>
+<h6 id="三层交换机上的配置"><a href="#三层交换机上的配置" class="headerlink" title="三层交换机上的配置"></a>三层交换机上的配置</h6><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ip routing 启用路由功能</span><br><span class="line">(config-if)#switchport trunk encapsulation dotlq设置trunk封装格式为dotlq</span><br><span class="line">(config-if)#switchport mode trunk</span><br><span class="line">(config)#Interface vlan 1</span><br><span class="line">(config-if)#ip address ip_address mask </span><br><span class="line">(config-if)# no shutdown </span><br><span class="line">(config)#interface vlan 2</span><br><span class="line">(config-if)#ip address ip_address mask </span><br><span class="line">(config-if)# no shutdown </span><br></pre></td></tr></table></figure>
+<h4 id="VTP协议"><a href="#VTP协议" class="headerlink" title="VTP协议"></a>VTP协议</h4><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(condig)#vtp domain name   设置vtp域名</span><br><span class="line">(condig)#vtp password passwd  设置vtp密码</span><br><span class="line">(condig)#vtp mode client/server  设置客户端或者服务端，服务端可以更改整个域的VLAN的添加删除，但是不能更改其他的交换机的端口是否属于该vlan</span><br></pre></td></tr></table></figure>]]></content>
+      <categories>
+        <category>net</category>
+      </categories>
+      <tags>
+        <tag>ccna</tag>
+        <tag>net</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>CCNA学习笔记五 -- ACL</title>
+    <url>/2018/08/28/theory/ccna/ccna-5/</url>
+    <content><![CDATA[<h4 id="网络安全"><a href="#网络安全" class="headerlink" title="网络安全"></a>网络安全</h4><p>物理层安全 墙上不用的网线接口，连接交换机的端口关掉<br>数据链路层安全 ADSL拨号账号和密码 MAC地址绑定 交换机连接计算机数量控制 创建VLAN<br>网络层安全 基于源ip地址目标IP地址的控制<br>传输层安全 会话攻击 LAND攻击 syn洪水攻击<br>应用层安全 登录密码  </p>
+<h4 id="网络层安全"><a href="#网络层安全" class="headerlink" title="网络层安全"></a>网络层安全</h4><p>标准的ACL  基于源地址进行控制<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#config terminal  </span><br><span class="line">(config)#access-list 10 deny host 192.168.1.2</span><br><span class="line">(config)#access-list 10 permit 192.168.1.0 0.0.0.255 允许192.168.1.0访问，使用翻转子网掩码</span><br><span class="line">(config)(config)#interface serial 3/0</span><br><span class="line">(config-if)#ip access-group 10 in/out 绑定控制列表到物理接口并确定出还是进检查访问列表</span><br><span class="line">(config)#no access-list 10 删除ACL10</span><br><span class="line">ACL的顺序影响访问控制</span><br><span class="line">扩展的ACL  基于源地址、目标地址、协议、端口号进行控制</span><br><span class="line">(config)#access-list 100 permit ip 192.168.1.0 0.0.0.255 any 允许192.168.1.0/24访问任何</span><br><span class="line">(config)#access-list 100 permit tcp 192.18.2.0 0.0.0.255 10.0.0.0 0.0.0.255 eq 80 允许192.18.2.0/24访问10.0.0.0/8上的web服务器</span><br><span class="line">(config)#access-list 100 permit icmp 192.18.2.0 0.0.0.255 any 允许192.18.2.0/24ping任何因特网</span><br></pre></td></tr></table></figure><br>将acl绑定到telnet接口<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config-line)#access-class 10 in/out </span><br></pre></td></tr></table></figure></p>
+<h4 id="acl具体应用"><a href="#acl具体应用" class="headerlink" title="acl具体应用"></a>acl具体应用</h4><ol>
+<li>入站————决不允许任何源地址是内部主机地址或网络地址的数据包进入一个私有的网络<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#access-list 150 deny ip 127.0.0.0 0.255.255.255 any log</span><br><span class="line">#access-list 150 deny ip 0.0.0.0 255.255.255.255 any log</span><br><span class="line">#access-list 150 deny ip 10.0.0.0 0.255.255.255 any log</span><br><span class="line">#access-list 150 deny ip 127.16.0.0 0.15.255.255 any log</span><br><span class="line">#access-list 150 deny ip 192.168.0.0 0.0.255.255 any log</span><br><span class="line">#access-list 150 deny ip 224.0.0.0 15.255.255.255 any log</span><br><span class="line">#access-list 150 deny ip host 255.255.255.255 any log</span><br><span class="line">#access-list 150 permit ip any any</span><br></pre></td></tr></table></figure></li>
+<li>出站————决不允许任何含有非内部网络有效的ip数据包出站<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#access-list 150 permit 192.168.0.0 0.0.255.255 any</span><br><span class="line">#access-list 150 deny ip any any log</span><br></pre></td></tr></table></figure></li>
+<li>阻塞外部访问<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#access-list 109 permit any 192.268.0.0 0.0.255.255 established </span><br><span class="line">#access-list 109 deny ip any any log</span><br></pre></td></tr></table></figure></li>
+<li>过滤ICMP消息————禁止ping命令进内网<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#access-list 112 deny icmp any any echo log </span><br><span class="line">#access-list 112 deny icmp any any redirect log </span><br><span class="line">#access-list 112 deny icmp any any mask-request log</span><br><span class="line">#access-list 112 permit icmp any 192.168.0.0 0.0.255.255  </span><br></pre></td></tr></table></figure></li>
+</ol>
+]]></content>
+      <categories>
+        <category>net</category>
+      </categories>
+      <tags>
+        <tag>ccna</tag>
+        <tag>net</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>CCNA学习笔记六 -- NAT</title>
+    <url>/2018/08/28/theory/ccna/ccna-6/</url>
+    <content><![CDATA[<h4 id="地址转换技术"><a href="#地址转换技术" class="headerlink" title="地址转换技术"></a>地址转换技术</h4><ol>
+<li>内网能够主动访问外网，外网不能主动访问内网，相对而言内网更安全一些  </li>
+<li>节省公网ip地址  </li>
+<li>缺点 慢  <h4 id="NAT（网络地址转换）"><a href="#NAT（网络地址转换）" class="headerlink" title="NAT（网络地址转换）"></a>NAT（网络地址转换）</h4>静态NAT 动态NAT  不节省公网地址、一个公网替换一个内网地址<br>PAT（端口地址转换）  节省公网ip、替换源端口和源地址  <figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#debug ip packet 开启数据包转发显示</span><br></pre></td></tr></table></figure>
+</li>
+</ol>
+<h4 id="路由器上配置PAT"><a href="#路由器上配置PAT" class="headerlink" title="路由器上配置PAT"></a>路由器上配置PAT</h4><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#access-list 10 permit 10.0.0.0 0.0.0.255 定义内网地址池</span><br><span class="line">(config)#ip nat pool name 131.107.0.1 131.107.0.1 netmask 255.255.255.0定义一个名为name的公网地址池从.0.1到.0.1</span><br><span class="line">(config)#ip nat inside source list 10 pool name overload  10列表绑定到name，overload表示PAT，不加overload表示NAT</span><br><span class="line">(config)#interface serial 0/0</span><br><span class="line">(config-if)#ip nat outside  0/0公网出口</span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#interface serial 0/1</span><br><span class="line">(config-if)#ip nat inside   0/1内网入口</span><br></pre></td></tr></table></figure>
+<p>端口映射 使公网地址可以访问内网地址<br>路由端口映射<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ip nat inside source static tcp 10.0.0.6 80 137.107.0.1 80 端口映射</span><br></pre></td></tr></table></figure></p>
+]]></content>
+      <categories>
+        <category>net</category>
+      </categories>
+      <tags>
+        <tag>ccna</tag>
+        <tag>net</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>CCNA学习笔记七 -- IPv6</title>
+    <url>/2018/08/28/theory/ccna/ccna-7/</url>
+    <content><![CDATA[<h4 id="DoD模型"><a href="#DoD模型" class="headerlink" title="DoD模型"></a>DoD模型</h4><p>应用层 Telent、FTP、SMTP、DNS、HTTP以及其他应用协议<br>传输层 TCP、UDP<br>网络层 ND、MLD、ICMPv6、IPv6<br>网络接口 各种通信网络接口（以太网等物理网络）  </p>
+<h4 id="IPv6地址（128位）"><a href="#IPv6地址（128位）" class="headerlink" title="IPv6地址（128位）"></a>IPv6地址（128位）</h4><ol>
+<li>首选的格式<br>128比特分成8段，每段的16比特用16进制表示，中间用:隔开<br>xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx</li>
+<li>压缩格式，允许0压缩<br>xxxx:xxxx::xx:xxx:x:xxxx<br>一对::在一个地址中只能出现1次</li>
+<li>IPv4构造IPv6<br>0:0:0:0:0:0:192.168.0.1或者::192.168.0.1</li>
+<li>子网掩码<br>xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx/n 前n位是网络部分，后边是主机部分<h4 id="单播地址"><a href="#单播地址" class="headerlink" title="单播地址"></a>单播地址</h4>全球路由前缀  |子网|接口ID<br>2001:0db8:3c4d:0012:a:d:1234:56ab<br>链路本地地址 link local address  该地址用于同一网段中IPv6计算机通信<br>多播地址<br>任播地址  </li>
+</ol>
+<p>::  相当于0.0.0.0<br>::1 相当于127.0.0.1<br>2000::/3 全球单播地址范围，前三位是001<br>FE80::/10 链路本地单播地址<br>FF00::/8 组播地址范围<br>3FFF:FFFF::/32 示例和文档保留地址<br>2001:oDB8::/32 示例和文档保留地址<br>2002::/16 用于IPv6到IPv4的转换系统</p>
+<h4 id="IPv6地址分配"><a href="#IPv6地址分配" class="headerlink" title="IPv6地址分配"></a>IPv6地址分配</h4><ol>
+<li>静态</li>
+<li>自动<br>无状态 向路由器发送路由前缀请求，配置IPv6的路由器接口收到，然后发送路由通告，计算机获得网络部分+自己的MAC地址，进行构造IPv6地址<br>有DHCP服务器 路由通告中M=1，则向DHCP服务器请求ip地址；路由通告中O=1，则向DHCP服务器请求其他设置如DNS服务器、搜索后缀等  </li>
+</ol>
+<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ipv6 unicast-routing 启用IPv6</span><br><span class="line">(config)#interface fastEthernet 0/0</span><br><span class="line">(config-if)#ipv6 address 2001:13::1/64</span><br><span class="line"></span><br><span class="line">(config-if)#ipv6 nd managed-config-flag  令路由通告中M=1</span><br><span class="line">(config-if)#ipv6 nd other-config-flag 令路由通告中O=1</span><br></pre></td></tr></table></figure>
+<h4 id="IPv6路由添加"><a href="#IPv6路由添加" class="headerlink" title="IPv6路由添加"></a>IPv6路由添加</h4><h5 id="静态路由"><a href="#静态路由" class="headerlink" title="静态路由"></a>静态路由</h5><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#show ipv6 interface fastEthernet 0/0 </span><br><span class="line">#show ipv6 route 查看IPv6路由表查</span><br><span class="line">(config)#ipv6 route 2001:1::/64 2001:1::1</span><br><span class="line">(config-if)#ipv6 address 2001:1::/64 eui-64 自己根据前缀和自己的MAC地址构造IPv6地址</span><br><span class="line">(config-if)#ipv6 address 2001:1::1/64 </span><br></pre></td></tr></table></figure>
+<h5 id="动态路由"><a href="#动态路由" class="headerlink" title="动态路由"></a>动态路由</h5><ol>
+<li>RIPng协议<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ipv6 unicast-routing</span><br><span class="line">(config)#ipv6 router rip 1</span><br><span class="line">(config-rtr)#exit</span><br><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 rip 1 enable</span><br></pre></td></tr></table></figure></li>
+<li>EIGRPv6协议<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ipv6 unicast-routing</span><br><span class="line">(config)#ipv6 router eigrp 10</span><br><span class="line">(config-rtr)#no shutdown</span><br><span class="line">(config-rtr)#router-id 4.0.0.1</span><br><span class="line">(config-rtr)#exit</span><br><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 eigrp 10 </span><br></pre></td></tr></table></figure></li>
+<li>OSPFv3协议<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ipv6 unicast-routing</span><br><span class="line">(config)#ipv6 router ospf 1</span><br><span class="line">(config-rtr)#router-id 4.0.0.1</span><br><span class="line">(config-rtr)#exit</span><br><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 ospf 1 area 0</span><br></pre></td></tr></table></figure>
+</li>
+</ol>
+<h4 id="IPv4和IPv6共存技术"><a href="#IPv4和IPv6共存技术" class="headerlink" title="IPv4和IPv6共存技术"></a>IPv4和IPv6共存技术</h4><p>双协议栈</p>
+<ol>
+<li>IPv6 to IPv4隧道技术<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ipv6 unicast-routing</span><br><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 address 2001:1::1/64 </span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#interface tunnel 0 隧道虚拟端口</span><br><span class="line">(config-if)#no shutdown</span><br><span class="line">(config-if)#ipv6 address 2001:2::1/64 给隧道虚拟端口配置IPv6</span><br><span class="line">(config-if)#tunnel source 10.0.0.1  隧道源地址</span><br><span class="line">(config-if)#tunnel destination 10.0.1.2 隧道目标地址</span><br><span class="line">(config-if)#tunnel mode ipv6ip 设置隧道加密模式</span><br><span class="line">(config-if)#exit</span><br></pre></td></tr></table></figure></li>
+<li>ISATAP隧道<ol>
+<li>配置ISATAP路由(该路由与IPv4网络接口为192.168.0.2) <figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#interface tunnel 0</span><br><span class="line">(config-if)#ipv6 address 2001:1::/64 eui-64</span><br><span class="line">(config-if)#no ipv6 nd suppress-ra</span><br><span class="line">(config-if)#tunnel source 10.0.0.1</span><br><span class="line">(config-if)#tunnel mode ipv6ip isatap</span><br><span class="line">(config-if)#no shutdown</span><br></pre></td></tr></table></figure></li>
+<li>windows下 <figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">&gt;netsh</span><br><span class="line">netsh&gt;interface</span><br><span class="line">netsh interface&gt;ipv6</span><br><span class="line">netsh interface ipv6&gt;isatap</span><br><span class="line">netsh interface ipv6 isatap&gt;set router 192.168.0.2</span><br></pre></td></tr></table></figure></li>
+</ol>
+</li>
+<li><p>静态NAT-PT</p>
+<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 nat </span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#interface serial 1/0</span><br><span class="line">(config-if)#ipv6 nat </span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#ipv6 nat v6v4 source 10.0.0.2 2001:2::2 </span><br><span class="line">(config)#ipv6 nat v6v4 source 2001:2::4 10.0.0.4</span><br><span class="line">(config)#ipv6 prefix 2001:3::/96</span><br></pre></td></tr></table></figure>
+</li>
+<li><p>动态NAT-PT 只能由IPv6网络主动向IPv4网络发起通信</p>
+<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 nat </span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#interface serial 1/0</span><br><span class="line">(config-if)#ipv6 nat </span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#ipv6 access-list v4map </span><br><span class="line">(config-ipv6-acl)#permit 2001:2::/64 any </span><br><span class="line">(config-ipv6-acl)#exit</span><br><span class="line">(config)#ipv6 access-list v6map</span><br><span class="line">(config-ipv6-acl)#permit 2001:2::/64 any </span><br><span class="line">(config-ipv6-acl)#exit</span><br><span class="line">(config)#ipv6 nat</span><br><span class="line">(config)#ipv6 nat v6v4 pool v4pool 10.0.2.100 10.0.2.200 prefix-length 24 </span><br><span class="line">(config)#ipv6 nat v6v4 source list v6list pool v4pool </span><br><span class="line">(config)#ipv6 nat prefix 2001::/96 v4-mapped v4map  2001::/96用v4map里的地址替代</span><br></pre></td></tr></table></figure></li>
+</ol>
 ]]></content>
       <categories>
-        <category>linux</category>
+        <category>net</category>
+      </categories>
+      <tags>
+        <tag>ccna</tag>
+        <tag>net</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>ElasticSearch学习笔记（一）</title>
+    <url>/2018/12/04/using/middleware/elk-1/</url>
+    <content><![CDATA[<h2 id="ElasticSearch-ES-有关的基本概念"><a href="#ElasticSearch-ES-有关的基本概念" class="headerlink" title="ElasticSearch(ES)有关的基本概念"></a>ElasticSearch(ES)有关的基本概念</h2><ol>
+<li>Cluster和Node<br>&emsp;&emsp;ES中的Cluster是对外提供搜索服务的集群，组成这个Cluster的各个节点叫做Node。<br>&emsp;&emsp;Node分类：IndexNode（提供读写），DataNode（只提供数据存储和访问，负载均衡等），节点之间关系对等，弱化的Master节点提供维护集群状态的功能</li>
+<li>Shards<br>&emsp;&emsp;ES将一个完整的索引分成若干部分，每一个部分就是一个Shards，每一个Shards实际上是一个基于Lucene的索引，Shards数量一遍在创建索引前指定，且索引创建后不能修改，es的检索实际上是对多个Shards上的搜索结果的合并</li>
+<li>Replicas<br>&emsp;&emsp;Replicas是索引的冗余备份，可用于放置数据丢失或用来做负载均衡</li>
+<li>Recovery<br>&emsp;&emsp;在有节点加入或者退出集群的时候，ES会对索引分片Shards重新分配</li>
+<li>River<br>&emsp;&emsp;River是一个运行在集群内部的插件，用来从外部获取异构数据，然后在ES里创建索引。常见的有RabbitMQ river Plugin、MongoDB river Plugin等</li>
+<li>Gateway<br>&emsp;&emsp;是ES索引数据快照的存储方式，当ES关机重启的时候，就会从Gateway中读取索引快照</li>
+<li>Discovery.zen<br>&emsp;&emsp;Es的自动发现节点机制，用来实现节点自动发现和Master节点选举，Master节点负责处理及节点的加入和退出以及分片Shards的重新分配</li>
+<li>Transport<br>&emsp;&emsp;代表ES内部节点或者集群与客户端的交互方式。默认TCP，同时支持HTTP（JSON）、Thrift、Servlet等</li>
+<li>Index、Type、Document、Field<br> &emsp;&emsp;Index是ES存储数据的地方，类似RDBMS的Database;Type类似于table;Document是一行数据，可以有不同字段集合;Field是最小存储单位</li>
+<li>Mapping<br>&emsp;&emsp;定义索引下Type的字段处理规则</li>
+</ol>
+<h2 id="ES默认端口"><a href="#ES默认端口" class="headerlink" title="ES默认端口"></a>ES默认端口</h2><p>9200 是HTTP端口，9300 是Transport端口</p>
+<h2 id="ES索引机器构建"><a href="#ES索引机器构建" class="headerlink" title="ES索引机器构建"></a>ES索引机器构建</h2><p>&emsp;&emsp;ES是基于Luence构建的，采用倒排索引机制，将文件封装为索引，将文本信息切分为成为Token的信息单元，再利用这些Token构建倒排索引。</p>
+]]></content>
+      <categories>
+        <category>elk</category>
       </categories>
       <tags>
         <tag>linux</tag>
-        <tag>nginx</tag>
+        <tag>elk</tag>
+        <tag>midedleware</tag>
+        <tag>log</tag>
       </tags>
   </entry>
   <entry>
-    <title>CCNA学习笔记二 -- TCP/IP协议</title>
-    <url>/2018/08/27/theory/ccna/ccna-2/</url>
-    <content><![CDATA[<h4 id="DoD模型"><a href="#DoD模型" class="headerlink" title="DoD模型"></a>DoD模型</h4><p>应用层 Telent、FTP、SMTP、DNS、HTTP以及其他应用协议<br>传输层 TCP、UDP<br>网络层 IPv4、ARP、RARP、ICMP<br>网络接口 各种通信网络接口（以太网等物理网络）</p>
-<h4 id="传输层协议"><a href="#传输层协议" class="headerlink" title="传输层协议"></a>传输层协议</h4><p>可靠传输 TCP 分段传输 建立会话（消耗系统资源） 丢失重传<br>不可靠传输 UDP 一个数据包就能表达完整 屏幕广播</p>
-<h4 id="应用层协议"><a href="#应用层协议" class="headerlink" title="应用层协议"></a>应用层协议</h4><h5 id="默认端口"><a href="#默认端口" class="headerlink" title="默认端口"></a>默认端口</h5><p>http=TCP+80<br>ftp=TCP+21（接受命令、验证身份等） 20（传输数据）<br>https=TCP+443<br>SMTP=TCP+25（发邮件）<br>POP3=TCP+110（收邮件）<br>RDP=TCP+3389(远程桌面)<br>DNS=UDP+53（DNS解析）<br>IP地址访问Windows共享文件夹=TCP+445<br>计算机名访问windows共享文件夹=TCP+139<br>SQL=TCP+1433（访问数据库）<br>telnet=TCP+23</p>
-<h4 id="服务和端口的关系"><a href="#服务和端口的关系" class="headerlink" title="服务和端口的关系"></a>服务和端口的关系</h4><p>服务侦听端口<br>客户端请求服务 使用目标端口来区分（服务器根据数据包的目标端口来区分客户端）<br>服务停止 侦听的端口关闭<br>查看侦听的端口 netstat -anb|find “content”<br>检测端口  telnet ip 端口</p>
-<h4 id="网络安全"><a href="#网络安全" class="headerlink" title="网络安全"></a>网络安全</h4><p>win2003service tcp/ip筛选不影响出去的流量<br>wf.msc windows高级防火墙</p>
-<h4 id="网络层协议"><a href="#网络层协议" class="headerlink" title="网络层协议"></a>网络层协议</h4><p>IP协议 选择最佳路径的协议（RIP OSPF EIGRP BGP）<br>ICMP协议 测试网络是否畅通<br>ping 估计带宽 查看网络是否畅通 断定远程系统 每过一个路由器TTL-1<br>TTL 128 windows系统<br>TTL 64  linux系统<br>pathping 跟踪路径 计算丢包情况<br>IGMP协议 组播<br>点到点 广播 多播（组播）<br>ARP协议 将计算机的IP地址解析成MAC地址<br>数据跨网段通讯和同一网段通信过程<br>MAC地址决定了下一跳给那个设备<br>IP地址决定最终计算机</p>
-<h4 id="IP地址"><a href="#IP地址" class="headerlink" title="IP地址"></a>IP地址</h4><p>32位二进制组成</p>
-<h5 id="ip地址分类"><a href="#ip地址分类" class="headerlink" title="ip地址分类"></a>ip地址分类</h5><p>  x:network id  y:host id</p>
-<div class="table-container">
-<table>
-<thead>
-<tr>
-<th>类别</th>
-<th>功能</th>
-<th>开头</th>
-<th>个头</th>
-<th>缺省子网掩码</th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td>A</td>
-<td>xyyy</td>
-<td>1-127</td>
-<td>256^3-2</td>
-<td>255.0.0.0</td>
-</tr>
-<tr>
-<td>B</td>
-<td>xxyy</td>
-<td>128-191</td>
-<td>256^2-2</td>
-<td>255.255.0.0</td>
-</tr>
-<tr>
-<td>C</td>
-<td>xxxy</td>
-<td>192-223</td>
-<td>256-2</td>
-<td>255.255.255.0</td>
-</tr>
-<tr>
-<td>D</td>
-<td>组播</td>
-<td>224-239</td>
-</tr>
-<tr>
-<td>E</td>
-<td>研究</td>
-<td>240-255</td>
-</tr>
-</tbody>
-</table>
-</div>
-<h5 id="保留的私网地址"><a href="#保留的私网地址" class="headerlink" title="保留的私网地址"></a>保留的私网地址</h5><p>A 10.0.0.0<br>B 172.16.0.0-172.31.0.0<br>C 192.168.0.0-192.168.255.0</p>
-<h5 id="本地环回地址"><a href="#本地环回地址" class="headerlink" title="本地环回地址"></a>本地环回地址</h5><p>127.0.0.1  ping通过表示TCP/IP协议安装正常<br>169.254.0.0 DHCP获取网络地址未果的时候得到的地址</p>
+    <title>Docker使用记录</title>
+    <url>/2018/09/28/using/middleware/docker-using/</url>
+    <content><![CDATA[<h4 id="安装"><a href="#安装" class="headerlink" title="安装"></a>安装</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">yum install -y docker</span><br></pre></td></tr></table></figure>
+<h4 id="修改docker下载源为国内源-这里使用的阿里源"><a href="#修改docker下载源为国内源-这里使用的阿里源" class="headerlink" title="修改docker下载源为国内源(这里使用的阿里源)"></a>修改docker下载源为国内源(这里使用的阿里源)</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">sudo <span class="built_in">mkdir</span> -p /etc/docker</span><br><span class="line">sudo <span class="built_in">tee</span> /etc/docker/daemon.json &lt;&lt;-<span class="string">&#x27;EOF&#x27;</span></span><br><span class="line">&#123;</span><br><span class="line">  <span class="string">&quot;registry-mirrors&quot;</span>: [<span class="string">&quot;https://n9tog3ea.mirror.aliyuncs.com&quot;</span>]</span><br><span class="line">&#125;</span><br><span class="line">EOF</span><br><span class="line">sudo systemctl daemon-reload</span><br><span class="line">sudo systemctl restart docker</span><br></pre></td></tr></table></figure>
+<p>其他源：<br><a href="https://registry.docker-cn.com">Docker 官方中国区 https://registry.docker-cn.com</a><br><a href="http://hub-mirror.c.163.com">网易 http://hub-mirror.c.163.com</a><br><a href="http://hub-mirror.c.163.com">ustc https://docker.mirrors.ustc.edu.cn</a>  </p>
+<h4 id="Docker镜像使用"><a href="#Docker镜像使用" class="headerlink" title="Docker镜像使用"></a>Docker镜像使用</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">#docekr search software 查找镜像</span></span><br><span class="line">docker search httpd</span><br><span class="line"><span class="comment">#docker pull software 下拉镜像</span></span><br><span class="line">docker pull redis</span><br><span class="line">docker pull mariadb</span><br><span class="line">docekr pull mongo</span><br><span class="line">docker pull cloudesire/activemq</span><br><span class="line">docker pull rabbitmq</span><br><span class="line">docker pull rabbitmq:3-management</span><br><span class="line">docker pull nginx</span><br><span class="line">docker pull tomcat </span><br><span class="line"></span><br></pre></td></tr></table></figure>
+<h4 id="docker指令帮助"><a href="#docker指令帮助" class="headerlink" title="docker指令帮助"></a>docker指令帮助</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">docker --<span class="built_in">help</span></span><br><span class="line"><span class="comment">#docker command --help 查看docker帮助</span></span><br><span class="line">docker start --<span class="built_in">help</span></span><br><span class="line"><span class="comment">#man docker command 查看command的man文档</span></span><br><span class="line">man docker start</span><br></pre></td></tr></table></figure>
+<h1 id="编辑-etc-profile"><a href="#编辑-etc-profile" class="headerlink" title="编辑/etc/profile"></a>编辑/etc/profile</h1><p>vim /etc/profile</p>
+<h1 id="将jdk配置到path"><a href="#将jdk配置到path" class="headerlink" title="将jdk配置到path"></a>将jdk配置到path</h1><p>export JAVA_HOME=java-1.8.0-openjdk-1.8.0.372.b07-1.el7_9.x86_64<br>export CLASSPATH=$:CLASSPATH:$JAVA_HOME/lib/<br>export PATH=$PATH:$JAVA_HOME/bin:$M2_HOME/bin</p>
+<h1 id="配置hadoop"><a href="#配置hadoop" class="headerlink" title="配置hadoop"></a>配置hadoop</h1><p>export HADOOP_HOME=/opt/hadoop-3.1.1<br>export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin</p>
+<h1 id="刷新环境变量"><a href="#刷新环境变量" class="headerlink" title="刷新环境变量"></a>刷新环境变量</h1><p>source /etc/profile</p>
 ]]></content>
       <categories>
-        <category>net</category>
+        <category>docker</category>
       </categories>
       <tags>
-        <tag>ccna</tag>
-        <tag>net</tag>
+        <tag>linux</tag>
+        <tag>docker</tag>
       </tags>
   </entry>
   <entry>
-    <title>CCNA学习笔记三 -- 路由和交换</title>
-    <url>/2018/08/28/theory/ccna/ccna-3/</url>
-    <content><![CDATA[<h4 id="网络畅通的条件"><a href="#网络畅通的条件" class="headerlink" title="网络畅通的条件"></a>网络畅通的条件</h4><p>数据包能去能回<br>沿途的路由器必须知道到目标地址如何转发<br>沿途的路由器必须知道回来的数据包如何转发  </p>
-<p>路由器直连的网络 不用告诉路由器如何转发<br>路由器没有直连的网络 管理员需要告诉路由器到目标网络如何转发 即添加静态路由<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ip route 192.168.1.0 255.255.255.0 192.268.2.0  设置数据包 到192.168.1.0/24的数据包下一跳给192.168.2.0</span><br><span class="line">(config)#tracroute ip_address 跟踪数据包路径</span><br><span class="line">#show ip route 查看路由表</span><br><span class="line">(config)#no ip route 192.168.1.0 255.255.255.0 删除路由表</span><br><span class="line">windows上添加路由表 route add ip_adress mask ip_web</span><br><span class="line">windows查看路由表 netstat-r    route print </span><br></pre></td></tr></table></figure></p>
-<h4 id="动态路由"><a href="#动态路由" class="headerlink" title="动态路由"></a>动态路由</h4><p>优先级 直连0 静态路由1 eigp90  rip120<br>RIP协议 跳数判断，周期性（30s）更新路由表，最大跳数16跳<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#router rip  启用rip协议  </span><br><span class="line">(config-router)#network 192.168.1.0 该网段参与rip协议  </span><br><span class="line">#debug ip rip 显示rip协议信息</span><br><span class="line">#undebug all  关闭rip协议信息显示</span><br><span class="line">#show ip protocols 显示应用协议</span><br><span class="line">EIGP协议 优先级高于RIP</span><br><span class="line">(config)#router eigp 10  启用eigp协议,相同编号路由器才可以交换路由信息</span><br><span class="line">(config-router)#network 192.168.1.0 该网段参与eigp协议</span><br></pre></td></tr></table></figure></p>
-<h4 id="交换"><a href="#交换" class="headerlink" title="交换"></a>交换</h4><p>集线器 不安全、冲突域、带宽共享<br>交换机 基于目标MAC地址转发、学习MAC地址、端口独享带宽、没有冲突、广播会出问题<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#show mac-address-table 显示MAC地址表</span><br><span class="line">  #config terminal </span><br><span class="line">  (config)#interrface fastEthernet 0/4</span><br><span class="line">  (config-if)#switchport mode access 接机算机的接口</span><br><span class="line">  (config-if)#switchport port-security 启用安全</span><br><span class="line">  (config-if)#switchport port-security violation shutdown 违反安全规则down掉</span><br><span class="line">  (config-if)#switchport port-security maxium 2 限制连接数量</span><br><span class="line">  (config)#interrface range fastEthernet 0/1 - 24 选中1-24个口</span><br><span class="line">  (config-if-range)#switchport port-security mac-adddress sticky MAC地址终止学习</span><br></pre></td></tr></table></figure></p>
-<h4 id="生成树协议"><a href="#生成树协议" class="headerlink" title="生成树协议"></a>生成树协议</h4><p> 为了高可用局域网交换机连接有了环路<br>为了阻断网络中的广播有了生成树协议<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#show spanning-tree 查看交换机端口以及生成树状态</span><br><span class="line">(config)#spanning-tree vlan 1 priority 4096更改路由器优先级为4096，值越小优先级越高</span><br><span class="line">(config)#no spanning-tree vlan 1 关闭生成树协议</span><br></pre></td></tr></table></figure></p>
+    <title>ELK日志分析系统搭建过程以及使用说明</title>
+    <url>/2018/12/04/using/middleware/elk/</url>
+    <content><![CDATA[<h2 id="环境搭建"><a href="#环境搭建" class="headerlink" title="环境搭建"></a>环境搭建</h2><h3 id="环境搭建说明"><a href="#环境搭建说明" class="headerlink" title="环境搭建说明"></a>环境搭建说明</h3><p>Centos 7 *2 + elastics 5.6.12 + logstash 5.6.12 + kibana 5.6.12 + filebeat 5.6.12</p>
+<h3 id="ElasticSearch环境搭建"><a href="#ElasticSearch环境搭建" class="headerlink" title="ElasticSearch环境搭建"></a>ElasticSearch环境搭建</h3><ol>
+<li><p>下载解压</p>
+ <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.12.tar.gz</span><br><span class="line">tar -zxvf elasticsearch-5.6.12.tar.gz -C /elk/elasticsearch/</span><br></pre></td></tr></table></figure>
+</li>
+<li><p>配置/config/elasticsearch.yml</p>
+ <figure class="highlight vim"><table><tr><td class="code"><pre><span class="line">network.host: <span class="number">0.0</span>.<span class="number">0.0</span> # 访问地址</span><br><span class="line">http.port: <span class="number">9200</span>   #端口号</span><br><span class="line">cluster.name: nmtx-cluster</span><br><span class="line">node.name: node-<span class="number">1</span></span><br></pre></td></tr></table></figure>
+</li>
+<li><p>运行</p>
+ <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">nohup</span> ./bin/elasticsearch &gt; ../logs/elasticsearch.log  2&gt;&amp;1 &amp; <span class="built_in">echo</span> $! &gt; process.pid</span><br><span class="line"><span class="comment">#在后台运行，日志打印到../logs/elasticsearch.log，进程号保存至process.pid</span></span><br></pre></td></tr></table></figure></li>
+<li>踩过的坑<ol>
+<li>不要使用root账户启动elasticsearch，这是出于系统安全考虑设置的条件。</li>
+<li>max virtual memory areas vm.max_map_count [65530] is too low, increase to at ，需要调整虚拟内存设置  <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">vim /etc/sysctl.conf</span><br><span class="line"><span class="comment">#添加如下信息并保存</span></span><br><span class="line">vm.max_map_count=655360</span><br><span class="line"></span><br><span class="line"><span class="comment">#运行以生效</span></span><br><span class="line">sysctl -p</span><br></pre></td></tr></table></figure></li>
+<li>需要修改linux对文件、线程的限制 <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment">#修改系统文件</span></span><br><span class="line">vim /etc/security/limits.d/20-nproc.conf</span><br><span class="line"><span class="comment">#调整成以下配置</span></span><br><span class="line">*       soft    <span class="built_in">nproc</span>    4096</span><br><span class="line">root    soft    <span class="built_in">nproc</span>    unlimited</span><br></pre></td></tr></table></figure></li>
+</ol>
+</li>
+<li><p>验证  </p>
+<p> &emsp;&emsp;访问9200端口看到如下类似信息即可  </p>
+ <figure class="highlight json"><table><tr><td class="code"><pre><span class="line"><span class="punctuation">&#123;</span></span><br><span class="line"><span class="attr">&quot;name&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;node-1&quot;</span><span class="punctuation">,</span></span><br><span class="line"><span class="attr">&quot;cluster_name&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;nmtx-cluster&quot;</span><span class="punctuation">,</span></span><br><span class="line"><span class="attr">&quot;cluster_uuid&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;plk3ql1SQ2umnqSpyBGI_w&quot;</span><span class="punctuation">,</span></span><br><span class="line"><span class="attr">&quot;version&quot;</span> <span class="punctuation">:</span> <span class="punctuation">&#123;</span></span><br><span class="line">    <span class="attr">&quot;number&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;5.6.12&quot;</span><span class="punctuation">,</span></span><br><span class="line">    <span class="attr">&quot;build_hash&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;cfe3d9f&quot;</span><span class="punctuation">,</span></span><br><span class="line">    <span class="attr">&quot;build_date&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;2018-09-10T20:12:43.732Z&quot;</span><span class="punctuation">,</span></span><br><span class="line">    <span class="attr">&quot;build_snapshot&quot;</span> <span class="punctuation">:</span> <span class="literal"><span class="keyword">false</span></span><span class="punctuation">,</span></span><br><span class="line">    <span class="attr">&quot;lucene_version&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;6.6.1&quot;</span></span><br><span class="line"><span class="punctuation">&#125;</span><span class="punctuation">,</span></span><br><span class="line"><span class="attr">&quot;tagline&quot;</span> <span class="punctuation">:</span> <span class="string">&quot;You Know, for Search&quot;</span></span><br><span class="line"><span class="punctuation">&#125;</span></span><br></pre></td></tr></table></figure>
+</li>
+</ol>
+<h3 id="filebeat环境搭建"><a href="#filebeat环境搭建" class="headerlink" title="filebeat环境搭建"></a>filebeat环境搭建</h3><h4 id="什么是Beats"><a href="#什么是Beats" class="headerlink" title="什么是Beats"></a>什么是Beats</h4><p>&emsp;&emsp;Beats 是安装在服务器上的数据中转代理，Beats 可以将数据直接传输到 Elasticsearch 或传输到 Logstash 。常见的Beats：</p>
+<ul>
+<li>Packetbeat：网络数据包分析器，提供有关您的应用程序服务器之间交换的事务的信息。  </li>
+<li>Filebeat：从您的服务器发送日志文件。  </li>
+<li>Metricbeat：是一个服务器监视代理程序，它定期从服务器上运行的操作系统和服务收集指标。</li>
+<li>Winlogbeat：提供Windows事件日志。</li>
+</ul>
+<h4 id="为什么使用filebeat"><a href="#为什么使用filebeat" class="headerlink" title="为什么使用filebeat"></a>为什么使用filebeat</h4><p>&emsp;&emsp;相比 Logstash，FileBeat 更加<font color="red">轻量化</font>。在任何环境下，应用程序都有停机的可能性。 Filebeat 读取并转发日志行，<font color="red">如果中断，则会记住所有事件恢复联机状态时所在位置
+</font>。Filebeat带有内部模块（auditd，Apache，Nginx，System和MySQL），可通过一个指定命令来简化通用日志格式的收集，解析和可视化。<br>FileBeat <font color="red">不会让你的管道超负荷</font>。FileBeat 如果是向 Logstash 传输数据，当 Logstash 忙于处理数据，会通知 FileBeat 放慢读取速度。一旦拥塞得到解决，FileBeat 将恢复到原来的速度并继续传播。</p>
+<ol>
+<li><p>下载与安装</p>
+ <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">wget https://artifacts.elastic.co/downloads/beats/filebeat/filebeat-5.6.12-linux-x86_64.tar.gz</span><br><span class="line">tar -zxvf ilebeat-5.6.12-linux-x86_64.tar.gz -C /elk/filebeat/</span><br></pre></td></tr></table></figure>
+</li>
+<li><p>配置filebeat.yml</p>
+<figure class="highlight vim"><table><tr><td class="code"><pre><span class="line">filebeat.prospectors:</span><br><span class="line"></span><br><span class="line"># Each - <span class="keyword">is</span> <span class="keyword">a</span> prospector. Most <span class="keyword">options</span> can <span class="keyword">be</span> <span class="keyword">set</span> at the prospector level, <span class="keyword">so</span></span><br><span class="line"># you can use different prospectors <span class="keyword">for</span> various configurations.</span><br><span class="line"># Below are the prospector specific configurations.</span><br><span class="line"></span><br><span class="line">- input_type: <span class="built_in">log</span></span><br><span class="line"></span><br><span class="line"># Paths that should <span class="keyword">be</span> crawled <span class="built_in">and</span> fetched. Glob based paths.</span><br><span class="line">paths:</span><br><span class="line">    - /var/<span class="built_in">log</span>/*-info.<span class="built_in">log</span>    #监听文件目录以及正则匹配规则</span><br><span class="line">    #- <span class="keyword">c</span>:\programdata\elasticsearch\logs\*  windows下的路径</span><br><span class="line">multiline: # 日志多行处理，列如java的堆栈信息</span><br><span class="line">    pattern: ^\d&#123;<span class="number">4</span>&#125; # 匹配前缀为数字开头，如果不是日期，该行日志接到上一行后尾</span><br><span class="line">    negate: true</span><br><span class="line">    <span class="keyword">match</span>: after</span><br><span class="line"></span><br><span class="line">fields: # 自定义属性，用于 Logstash 中</span><br><span class="line">    service_name: customer # 产生日志的服务名</span><br><span class="line">    log_type: info # 日志文件类型</span><br><span class="line">    server_id: ip-address # 服务器ip地址</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">#----------------------------- Logstash output --------------------------------</span><br><span class="line">output.logstash:</span><br><span class="line"># The Logstash hosts</span><br><span class="line">hosts: [<span class="string">&quot;localhost:5043&quot;</span>]  #这里是发送到本地的logstash，要与logstash的<span class="built_in">input</span>对应，也可以设置为elasticsearch</span><br><span class="line"></span><br></pre></td></tr></table></figure>
+</li>
+<li><p>运行</p>
+ <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">nohup</span> ./filebeat -e -c filebeat.yml &gt; ../logs/filebeat.log 2&gt;&amp;1 &amp;  <span class="built_in">echo</span> $! &gt; process.pid</span><br></pre></td></tr></table></figure>
+</li>
+</ol>
+<h3 id="logstash环境搭建"><a href="#logstash环境搭建" class="headerlink" title="logstash环境搭建"></a>logstash环境搭建</h3><ol>
+<li><p>下载与安装</p>
+ <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">wget https://artifacts.elastic.co/downloads/logstash/logstash-5.6.12.tar.gz</span><br><span class="line">tar -zxvf logstash-5.6.12.tar.gz -C /elk/logstash/</span><br></pre></td></tr></table></figure>
+</li>
+<li><p>配置logstash /config/logstash.conf</p>
+<figure class="highlight vim"><table><tr><td class="code"><pre><span class="line"><span class="built_in">input</span> &#123;</span><br><span class="line">    beats &#123;</span><br><span class="line">        host =&gt; <span class="string">&quot;localhost&quot;</span>  #监听本地访问的<span class="number">5043</span>端口</span><br><span class="line">        port =&gt; <span class="string">&quot;5043&quot;</span></span><br><span class="line">    &#125;</span><br><span class="line">    beats&#123;</span><br><span class="line">        host =&gt; <span class="string">&quot;0.0.0.0&quot;</span>  #监听任何地址都可访问的<span class="number">5044</span>端口</span><br><span class="line">        port =&gt; <span class="string">&quot;5044&quot;</span></span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="built_in">filter</span> &#123;</span><br><span class="line">    <span class="keyword">if</span> [fields][log_type] == <span class="string">&#x27;error&#x27;</span> &#123;</span><br><span class="line">        grok &#123;</span><br><span class="line">        <span class="keyword">match</span> =&gt; &#123; <span class="string">&quot;message&quot;</span> =&gt; <span class="string">&quot;%&#123;TIMESTAMP_ISO8601:logdate&#125; %&#123;LOGLEVEL:loglevel&#125; %&#123;JAVACLASS:class&#125; %&#123;NUMBER:thread&#125; %&#123;JAVALOGMESSAGE:logmsg&#125;&quot;</span> &#125;</span><br><span class="line">            &#125;</span><br><span class="line">        date &#123; # 将 kibana 的查询时间改成日志的打印时间，方便之后查询，如果不改的话，kibana会有自己的时间，导致查询不方便</span><br><span class="line">            <span class="keyword">match</span> =&gt; [<span class="string">&quot;logdate&quot;</span>, <span class="string">&quot;yyyy-MM-dd HH:mm:ss Z&quot;</span>, <span class="string">&quot;ISO8601&quot;</span>]</span><br><span class="line">            target =&gt; <span class="string">&quot;@timestamp&quot;</span></span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> [fields][log_type] == <span class="string">&#x27;info&#x27;</span> &#123; # 如果是info类型该怎么格式，这里是重复的，如果有日志格式不一样比如nginx的日志类型，可以在这里自己定义</span><br><span class="line">        grok &#123;</span><br><span class="line">        <span class="keyword">match</span> =&gt; &#123; <span class="string">&quot;message&quot;</span> =&gt; <span class="string">&quot;%&#123;TIMESTAMP_ISO8601:logdate&#125; %&#123;LOGLEVEL:loglevel&#125; %&#123;JAVACLASS:class&#125; %&#123;NUMBER:thread&#125; %&#123;JAVALOGMESSAGE:logmsg&#125;&quot;</span> &#125;</span><br><span class="line">            &#125;</span><br><span class="line">        date &#123;</span><br><span class="line">            <span class="keyword">match</span> =&gt; [<span class="string">&quot;logdate&quot;</span>, <span class="string">&quot;yyyy-MM-dd HH:mm:ss Z&quot;</span>, <span class="string">&quot;ISO8601&quot;</span>]</span><br><span class="line">            target =&gt; <span class="string">&quot;@timestamp&quot;</span></span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">output &#123;</span><br><span class="line">    elasticsearch &#123;</span><br><span class="line">        hosts =&gt; [<span class="string">&quot;localhost:9200&quot;</span>]</span><br><span class="line">        <span class="built_in">index</span> =&gt; <span class="string">&quot;%&#123;[fields][service_name]&#125;-%&#123;+YYYY.MM.dd&#125;&quot;</span> # 在es中存储的索引格式，按照“服务名-日期”进行索引</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure></li>
+<li><p>运行</p>
+ <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">nohup</span> bin/logstash -f config/logstash.conf &gt; ../logs/logstash.log  2&gt;&amp;1 &amp; <span class="built_in">echo</span> $! &gt; process.pid</span><br></pre></td></tr></table></figure>
+</li>
+</ol>
+<h3 id="kibana环境搭建"><a href="#kibana环境搭建" class="headerlink" title="kibana环境搭建"></a>kibana环境搭建</h3><ol>
+<li><p>下载与安装</p>
+ <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">wget https://artifacts.elastic.co/downloads/kibana/kibana-5.6.12-linux-x86_64.tar.gz</span><br><span class="line">tar -zxvf kibana-5.6.12-linux-x86_64.tar.gz -C /elk/kibana/</span><br></pre></td></tr></table></figure></li>
+<li><p>配置kibana /config/kibana.log</p>
+ <figure class="highlight vim"><table><tr><td class="code"><pre><span class="line">server.port: <span class="number">5601</span></span><br><span class="line">server.host: <span class="string">&quot;0.0.0.0&quot;</span> #允许其他终端访问</span><br><span class="line">elasticsearch.url: <span class="string">&quot;http://localhost:9200&quot;</span> #elasticsearch访问地址</span><br></pre></td></tr></table></figure>
+</li>
+<li><p>运行</p>
+ <figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">nohup</span> bin/kibana &gt; ../logs/kibana.log 2&gt;&amp;1 &amp; <span class="built_in">echo</span> $! &gt; process.pid</span><br></pre></td></tr></table></figure>
+</li>
+<li><p>验证<br>&emsp;&emsp;访问5601端口有页面即为正常</p>
+</li>
+</ol>
+<h2 id="使用说明"><a href="#使用说明" class="headerlink" title="使用说明"></a>使用说明</h2><h3 id="Kibana使用说明"><a href="#Kibana使用说明" class="headerlink" title="Kibana使用说明"></a>Kibana使用说明</h3><ol>
+<li>查看系统运行状态<br>&emsp;&emsp;访问<a href="http://localhsot:5601/status">http://localhsot:5601/status</a></li>
+<li>基本使用<br>&emsp;&emsp;在 Discover 页搜索和浏览数据；在 Visualize 页做数据图表映射；在 Dashboard 页创建并查看自定义仪表板。</li>
+</ol>
+<p>参考资料：<br><a href="https://www.elastic.co/guide/cn/kibana/current/index.html">https://www.elastic.co/guide/cn/kibana/current/index.html</a></p>
+<h3 id="elasticsearch查询语法"><a href="#elasticsearch查询语法" class="headerlink" title="elasticsearch查询语法"></a>elasticsearch查询语法</h3><ol>
+<li>其中status字段包含active &emsp;&emsp;-&gt;&emsp;&emsp;  status:active</li>
+<li>其中title字段包含quick或brown。如果省略OR运算符，将使用默认运算符 &emsp;&emsp; -&gt; &emsp;&emsp; title:(quick OR brown)  或者是title:(quick brown)</li>
+<li>其中author字段包含精确短语”john smith” &emsp;&emsp; -&gt; &emsp;&emsp; author:”john smith”</li>
+<li>其中任何字段book.title，book.content或book.date包含 quick或brown（注意我们需要如何*使用反斜杠转义） &emsp;&emsp; -&gt; &emsp;&emsp;</li>
+<li>该字段title具有任何非null值：&emsp;&emsp;-&gt;&emsp;&emsp;<em>exists</em>:title</li>
+<li>通配符搜索可以在单个术语上运行，使用?替换单个字符，并*替换零个或多个字符  <font color="red">请注意，通配符查询可能会占用大量内存并执行得非常糟糕 - 只需考虑需要查询多少个术语以匹配查询字符串"a* b* c*"。</font></li>
+<li>正则表达式 &emsp;&emsp;-&gt;&emsp;&emsp;  /pattern/</li>
+<li>模糊 &emsp;&emsp;-&gt;&emsp;&emsp; quikc~brwn~foks~</li>
+<li>邻近搜索 邻近搜索允许我们指定短语中单词的最大编辑距离：&emsp;&emsp;-&gt;&emsp;&emsp;”fox quick”~5</li>
+<li>范围 可以为日期，数字或字符串字段指定范围。包含范围用方括号指定，[min TO max]排他范围用大括号指定{min TO max}。</li>
+<li>保留字符   + - = &amp;&amp; || &gt; &lt; ! ( ) { } [ ] ^ “ ~ * ? : \ /</li>
+<li>分组 可以将多个术语或子句与括号组合在一起，以形成子查询：</li>
+<li>布尔运算符 首选运算符+（此术语必须存在）和- （此术语不得出现）。</li>
+<li>提升 使用boost运算符^使一个术语比另一个术语更相关。例如，如果我们想要找到关于fox的所有文件，但我们对quick fox特别感兴趣  &emsp;&emsp;-&gt;&emsp;&emsp; quick^2 fox</li>
+</ol>
+<p>参考资料<br> <a href="https://www.elastic.co/guide/en/elasticsearch/reference/6.0/query-dsl-query-string-query.html#_boosting">https://www.elastic.co/guide/en/elasticsearch/reference/6.0/query-dsl-query-string-query.html#_boosting</a></p>
 ]]></content>
       <categories>
-        <category>net</category>
+        <category>elk</category>
       </categories>
       <tags>
-        <tag>ccna</tag>
-        <tag>net</tag>
+        <tag>linux</tag>
+        <tag>elk</tag>
+        <tag>midedleware</tag>
+        <tag>log</tag>
       </tags>
   </entry>
   <entry>
-    <title>CCNA学习笔记四 -- VLAN</title>
-    <url>/2018/08/28/theory/ccna/ccna-4/</url>
-    <content><![CDATA[<h4 id="VLAN虚拟局域网"><a href="#VLAN虚拟局域网" class="headerlink" title="VLAN虚拟局域网"></a>VLAN虚拟局域网</h4><p>&emsp;&emsp;VLAN是交换机组网才有的概念，按部门或管理的要求来组网，而不是按照位置组网，更灵活，安全<br>一个VLAN=一个广播域=一个网段<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#show vlan 查看VLAN</span><br><span class="line">(config)#vlan 2 创建VLAN2</span><br><span class="line">(config)#interrface range fastEthernet 0/13 - 24 选中13-24接口</span><br><span class="line">(config-if-range)#switchport mode access 设置计算机接口</span><br><span class="line">(config-if-range)#switchport access vlan 2 设置为vlan2</span><br></pre></td></tr></table></figure></p>
-<h6 id="单臂路由器实现VLAN间路由"><a href="#单臂路由器实现VLAN间路由" class="headerlink" title="单臂路由器实现VLAN间路由"></a>单臂路由器实现VLAN间路由</h6><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#interface gigabitEthernet 1/1 打开Gbit1/1接口</span><br><span class="line">(config-if)#switchport mode trunk 设置干道链路 </span><br></pre></td></tr></table></figure>
-<h6 id="三层交换机上的配置"><a href="#三层交换机上的配置" class="headerlink" title="三层交换机上的配置"></a>三层交换机上的配置</h6><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ip routing 启用路由功能</span><br><span class="line">(config-if)#switchport trunk encapsulation dotlq设置trunk封装格式为dotlq</span><br><span class="line">(config-if)#switchport mode trunk</span><br><span class="line">(config)#Interface vlan 1</span><br><span class="line">(config-if)#ip address ip_address mask </span><br><span class="line">(config-if)# no shutdown </span><br><span class="line">(config)#interface vlan 2</span><br><span class="line">(config-if)#ip address ip_address mask </span><br><span class="line">(config-if)# no shutdown </span><br></pre></td></tr></table></figure>
-<h4 id="VTP协议"><a href="#VTP协议" class="headerlink" title="VTP协议"></a>VTP协议</h4><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(condig)#vtp domain name   设置vtp域名</span><br><span class="line">(condig)#vtp password passwd  设置vtp密码</span><br><span class="line">(condig)#vtp mode client/server  设置客户端或者服务端，服务端可以更改整个域的VLAN的添加删除，但是不能更改其他的交换机的端口是否属于该vlan</span><br></pre></td></tr></table></figure>]]></content>
+    <title>mycat使用记录一 -- 安装与配置</title>
+    <url>/2018/08/30/using/middleware/mycat-1/</url>
+    <content><![CDATA[<p>rkdownm</p>
+<h4 id="背景条件"><a href="#背景条件" class="headerlink" title="背景条件"></a>背景条件</h4><p>&emsp;&emsp;现有app流量数据统计分析系统，因数据量过大使用单数据库性能有限，打算将现有数据库进行优化，计划使用mycat实现分布式，在本地搭建环境学习</p>
+<h4 id="环境"><a href="#环境" class="headerlink" title="环境"></a>环境</h4><p>&emsp;&emsp;VMware虚拟机下的Cetnos7 × 3台</p>
+<h4 id="mycat的安装"><a href="#mycat的安装" class="headerlink" title="mycat的安装"></a>mycat的安装</h4><ol>
+<li><a href="http://dl.mycat.io">下载</a>mycat，这里我选择的是1.6.5版本，也就是目前的release版本。</li>
+<li>上传至linux系统，解压至/opt/mycat(我习惯的目录)</li>
+</ol>
+<h4 id="mycat的配置"><a href="#mycat的配置" class="headerlink" title="mycat的配置"></a>mycat的配置</h4><h5 id="配置文件路径"><a href="#配置文件路径" class="headerlink" title="配置文件路径"></a>配置文件路径</h5><p>$mycat_home$指的是安装目录<br>$mycat_home$/conf/server.xml    Mycat的配置文件，设置账号、参数等<br>$mycat_home$/conf/schema.xml  Mycat对应的物理数据库和数据库表的配置<br>$mycat_home$/conf/rule.xml    Mycat分片（分库分表）规则  </p>
+<h5 id="具体配置"><a href="#具体配置" class="headerlink" title="具体配置"></a>具体配置</h5><ol>
+<li>wrapper.conf<br>—配置jdk(如果已经配置java环境变量，这一步可以忽略) <figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">wrapper.java.command=/usr/bin/java</span><br><span class="line">#配置java的路径</span><br></pre></td></tr></table></figure></li>
+<li><p>server.xml</p>
+<ol>
+<li><p>user标签</p>
+<figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">user</span> <span class="attr">name</span>=<span class="string">&quot;root&quot;</span> <span class="attr">defaultAccount</span>=<span class="string">&quot;true&quot;</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">&quot;password&quot;</span>&gt;</span>your_password<span class="tag">&lt;/<span class="name">property</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">&quot;schemas&quot;</span>&gt;</span>db1,db2<span class="tag">&lt;/<span class="name">property</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">property</span> <span class="attr">name</span>=<span class="string">&quot;readOnly&quot;</span>&gt;</span>false<span class="tag">&lt;/<span class="name">property</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">user</span>&gt;</span></span><br></pre></td></tr></table></figure>
+<p>user    用户配置节点<br>—name    登录的用户名，也就是连接Mycat的用户名<br>—password    登录的密码，也就是连接Mycat的密码<br>—schemas    数据库名，这里会和schema.xml中的配置关联，多个用逗号分开，例如需要这个用户需要管理两个数据库db1,db2，则配置db1,dbs  </p>
+</li>
+<li><p>privileges标签</p>
+<figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"> <span class="tag">&lt;<span class="name">privileges</span> <span class="attr">check</span>=<span class="string">&quot;false&quot;</span>&gt;</span> 默认关闭</span><br><span class="line">    <span class="tag">&lt;<span class="name">schema</span> <span class="attr">name</span>=<span class="string">&quot;TESTDB&quot;</span> <span class="attr">dml</span>=<span class="string">&quot;0110&quot;</span> &gt;</span></span><br><span class="line">        <span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">&quot;tb 01&quot;</span> <span class="attr">dml</span>=<span class="string">&quot;0000&quot;</span>&gt;</span><span class="tag">&lt;/<span class="name">table</span>&gt;</span></span><br><span class="line">        <span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">&quot;tb02&quot;</span> <span class="attr">dml</span>=<span class="string">&quot;1111&quot;</span>&gt;</span><span class="tag">&lt;/<span class="name">table</span>&gt;</span></span><br><span class="line">        1 代表有权限</span><br><span class="line">        0 代表无权限</span><br><span class="line">    顺序为  insert,update,select,delete</span><br><span class="line">    <span class="tag">&lt;/<span class="name">schema</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">privileges</span>&gt;</span></span><br></pre></td></tr></table></figure></li>
+<li>system标签<br>&emsp;&emsp;这个标签内嵌套的所有 property 标签都与系统配置有关。  </li>
+<li>firewall标签<br>&emsp;&emsp;有关防火墙的标签，也就是在网络层对请求的地址进行限制，主要是从安全角度来保证Mycat不被匿名IP进行访问  <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"> <span class="comment">&lt;!-- 全局SQL防火墙设置 --&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--白名单可以使用通配符%或着*--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--例如&lt;host host=&quot;127.0.0.*&quot; user=&quot;root&quot;/&gt;--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--例如&lt;host host=&quot;127.0.*&quot; user=&quot;root&quot;/&gt;--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--例如&lt;host host=&quot;127.*&quot; user=&quot;root&quot;/&gt;--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--例如&lt;host host=&quot;1*7.*&quot; user=&quot;root&quot;/&gt;--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--这些配置情况下对于127.0.0.1都能以root账户登录--&gt;</span></span><br><span class="line"> <span class="comment">&lt;!--</span></span><br><span class="line"><span class="comment"> &lt;firewall&gt;</span></span><br><span class="line"><span class="comment">    &lt;whitehost&gt;</span></span><br><span class="line"><span class="comment">       &lt;host host=&quot;1*7.0.0.*&quot; user=&quot;root&quot;/&gt;</span></span><br><span class="line"><span class="comment">    &lt;/whitehost&gt;</span></span><br><span class="line"><span class="comment">    &lt;blacklist check=&quot;false&quot;&gt;</span></span><br><span class="line"><span class="comment">    &lt;/blacklist&gt;</span></span><br><span class="line"><span class="comment">&lt;/firewall&gt;</span></span><br></pre></td></tr></table></figure>
+</li>
+</ol>
+</li>
+<li><p>schema.xml<br>— schema      数据库设置，此数据库为逻辑数据库，name与server.xml中schema对应<br>— dataNode    分片信息，也就是分库相关配置<br>— dataHost    物理数据库，真正存储数据的数据库  </p>
+<ol>
+<li>schema标签<br>&emsp;&emsp;schema标签用来定义mycat实例中的逻辑库，mycat可以有多个逻辑库，每个逻辑库都有自己的相关配置。可以使用schema标签来划分这些不同的逻辑库<br>&emsp;&emsp;如果不配置schema标签，所有表的配置会属于同一个默认的逻辑库。逻辑库的概念和MySql的database的概念一样，我们在查询两个不同逻辑库中的表的时候，需要切换到该逻辑库下进行查询。 <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">schema</span> <span class="attr">name</span>=<span class="string">&quot; &quot;</span> <span class="attr">checkSQLschema</span>=<span class="string">&quot;false&quot;</span> <span class="attr">sqlMaxLimit</span>=<span class="string">&quot;100&quot;</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">schema</span>&gt;</span></span><br><span class="line"><span class="comment">&lt;!--</span></span><br><span class="line"><span class="comment">name        逻辑数据库名,与server.xml中的schema对应</span></span><br><span class="line"><span class="comment">checkSQLschema     数据库前缀相关设置，当该值为true时，例如我们执行语句select * from TESTDB.company 。mycat会把语句修改为 select * from company 去掉TESTDB。</span></span><br><span class="line"><span class="comment">sqlMaxLimit        当该值设置为某个数值时，每条执行的sql语句，如果没有加上limit语句，Mycat会自动加上对应的值。不写的话，默认返回所有的值。</span></span><br><span class="line"><span class="comment">--&gt;</span></span><br></pre></td></tr></table></figure></li>
+<li><p>table标签<br>—name  表名，物理数据库中表名<br>—dataNode  表存储到哪些节点，多个节点用逗号分隔。节点为下文dataNode设置的name<br>—primaryKey主键字段名，自动生成主键时需要设置<br>—autoIncrement 是否自增<br>—rule  分片规则名，具体规则下文rule详细介绍<br>—type 该属性定义了逻辑表的类型，目前逻辑表只有全局表和普通表。全局表： global 普通表：无<br>&emsp;&emsp;注：全局表查询任意节点，普通表查询所有节点效率低<br>—autoIncrement mysql对非自增长主键，使用last_insert_id() 是不会返回结果的，只会返回0。所以，只有定义了自增长主键的表，才可以用last_insert_id()返回主键值。<br>mycat提供了自增长主键功能，但是对应的mysql节点上数据表，没有auto_increment,那么在mycat层调用last_insert_id()也是不会返回结果的。<br>—needAddLimit 指定表是否需要自动的在每个语句后面加上limit限制，由于使用了分库分表，数据量有时候会特别庞大，这时候执行查询语句，忘记加上limt就会等好久，所以mycat自动为我们加上了limit 100，这个属性默认为true，可以自己设置为false禁用。如果使用这个功能，最好配合使用数据库模式的全局序列。<br>—subTables 分表，分表目前不支持Join。</p>
+ <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">“test”</span> <span class="attr">primaryKey</span>=<span class="string">&quot;ID&quot;</span> <span class="attr">autoIncrement</span>=<span class="string">&quot;true&quot;</span> <span class="attr">dataNode</span>=<span class="string">“dn1,dn2,dn3”</span> /&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">“mine”</span> <span class="attr">primaryKey</span>=<span class="string">&quot;ID&quot;</span> <span class="attr">autoIncrement</span>=<span class="string">&quot;true&quot;</span> <span class="attr">dataNode</span>=<span class="string">“dn1,dn2,dn3”</span> /&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">“new”</span> <span class="attr">primaryKey</span>=<span class="string">&quot;ID&quot;</span> <span class="attr">autoIncrement</span>=<span class="string">&quot;true&quot;</span> <span class="attr">dataNode</span>=<span class="string">“dn1,dn2,dn3”</span> /&gt;</span></span><br></pre></td></tr></table></figure>
+</li>
+<li><p>childTable标签<br>—childTable 标签用于定义 E-R 分片的子表。通过标签上的属性与父表进行关联。<br>—name    子表的名称<br>—joinKey    子表中字段的名称<br>—parentKey    父表中字段名称<br>—primaryKey    同Table<br>—needAddLimit    同Table </p>
+ <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">table</span> <span class="attr">name</span>=<span class="string">&quot;customer&quot;</span> <span class="attr">primaryKey</span>=<span class="string">&quot;ID&quot;</span> <span class="attr">dataNode</span>=<span class="string">&quot;dn1,dn2&quot;</span> <span class="attr">rule</span>=<span class="string">&quot;sharding-by-intfile&quot;</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">childTable</span> <span class="attr">name</span>=<span class="string">&quot;c_a&quot;</span> <span class="attr">primaryKey</span>=<span class="string">&quot;ID&quot;</span> <span class="attr">joinKey</span>=<span class="string">&quot;customer_id&quot;</span> <span class="attr">parentKey</span>=<span class="string">&quot;id&quot;</span> /&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">table</span>&gt;</span></span><br></pre></td></tr></table></figure>
+</li>
+<li><p>dataNode标签<br>&emsp;&emsp;datanode标签定义了mycat中的数据节点，也就是我们所说的数据分片。一个datanode标签就是一个独立的数据分片。<br>&emsp;&emsp;例子中的表述的意思为，使用名字为localhost1数据库实例上的db1物理数据库，这就组成一个数据分片，最后我们用dn1来标示这个分片。<br>—name    定义数据节点的名字，这个名字需要唯一。我们在table标签上用这个名字来建立表与分片对应的关系<br>—dataHost    用于定义该分片属于哪个数据库实例，属性与datahost标签上定义的name对应<br>—database    用于定义该分片属于数据库实例上 的具体库。  </p>
+ <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">dataNode</span> <span class="attr">name</span>=<span class="string">&quot;dn1&quot;</span> <span class="attr">dataHost</span>=<span class="string">&quot;localhost1&quot;</span> <span class="attr">database</span>=<span class="string">&quot;db1&quot;</span> /&gt;</span></span><br></pre></td></tr></table></figure></li>
+<li>dataHost标签<br>—name    唯一标示dataHost标签，供上层使用<br>—maxCon    指定每个读写实例连接池的最大连接。<br>—minCon    指定每个读写实例连接池的最小连接，初始化连接池的大小<br>—balance    负载均称类型<br>&emsp;&emsp;balance=”0”：不开启读写分离机制，所有读操作都发送到当前可用的writeHost上<br>&emsp;&emsp;balance=”1”：全部的readHost与stand by writeHost参与select语句的负载均衡，简单的说，当双主双从模式（M1-S1，M2-S2 并且M1 M2互为主备），正常情况下，M2,S1,S2都参与select语句的负载均衡。<br>&emsp;&emsp;balance=”2”：所有读操作都随机的在writeHost、readHost上分发<br>&emsp;&emsp;balance=”3”：所有读请求随机的分发到writeHst对应的readHost执行，writeHost不负担读写压力。（1.4之后版本有）<br>—writeType    负载均衡类型。<br>&emsp;&emsp;writeType=”0”, 所有写操作发送到配置的第一个 writeHost，第一个挂了切到还生存的第二个writeHost，重新启动后已切换后的为准，切换记录在配置文件中:dnindex.properties .<br>&emsp;&emsp;writeType=”1”，所有写操作都随机的发送到配置的 writeHost。1.5以后版本废弃不推荐。<br>—switchType<br>&emsp;&emsp;-1 不自动切换<br>&emsp;&emsp;1 默认值 自动切换<br>&emsp;&emsp;2 基于MySql主从同步的状态决定是否切换，心跳语句为 show slave status<br>&emsp;&emsp;3 基于 MySQL galary cluster 的切换机制（适合集群）（1.4.1）,心跳语句为 show status like ‘wsrep%’<br>—dbType 指定后端链接的数据库类型目前支持二进制的mysql协议，还有其他使用jdbc链接的数据库，例如：mongodb，oracle，spark等<br>—dbDriver    指定连接后段数据库使用的driver，目前可选的值有native和JDBC。使用native的话，因为这个值执行的是二进制的mysql协议，所以可以使用mysql和mariadb，其他类型的则需要使用JDBC驱动来支持。<br>1.6版本开始支持postgresql的原始协议。<br>如果使用JDBC的话需要符合JDBC4标准的驱动jar 放到mycat\lib目录下，并检查驱动jar包中包括如下目录结构文件 META-INF\services\java.sql.Driver。 在这个文件写上具体的driver类名，例如com.mysql.jdbc.Driver<br>—tempReadHostAvailable<br>&emsp;&emsp;如果配置了这个属性 writeHost 下面的 readHost 仍旧可用，默认 0 可配置（0、1）。 <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">dataHost</span> <span class="attr">name</span>=<span class="string">&quot;localhost1&quot;</span> <span class="attr">maxCon</span>=<span class="string">&quot;1000&quot;</span> <span class="attr">minCon</span>=<span class="string">&quot;10&quot;</span> <span class="attr">balance</span>=<span class="string">&quot;0&quot;</span> <span class="attr">writeType</span>=<span class="string">&quot;0&quot;</span> <span class="attr">dbType</span>=<span class="string">&quot;mysql&quot;</span> <span class="attr">dbDriver</span>=<span class="string">&quot;native&quot;</span> <span class="attr">switchType</span>=<span class="string">&quot;1&quot;</span> <span class="attr">slaveThreshold</span>=<span class="string">&quot;100&quot;</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">heartbeat</span>&gt;</span>select user()<span class="tag">&lt;/<span class="name">heartbeat</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">writeHost</span> <span class="attr">host</span>=<span class="string">&quot;hostM1&quot;</span> <span class="attr">url</span>=<span class="string">&quot;192.168.1.100:3306&quot;</span> <span class="attr">user</span>=<span class="string">&quot;root&quot;</span> <span class="attr">password</span>=<span class="string">&quot;123456&quot;</span>&gt;</span></span><br><span class="line">        <span class="tag">&lt;<span class="name">readHost</span> <span class="attr">host</span>=<span class="string">&quot;hostS1&quot;</span> <span class="attr">url</span>=<span class="string">&quot;192.168.1.101:3306&quot;</span> <span class="attr">user</span>=<span class="string">&quot;root&quot;</span> <span class="attr">password</span>=<span class="string">&quot;123456&quot;</span> /&gt;</span></span><br><span class="line">    <span class="tag">&lt;/<span class="name">writeHost</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">dataHost</span>&gt;</span></span><br></pre></td></tr></table></figure></li>
+<li><p>heartbeat标签<br>&emsp;&emsp;这个标签内指明用于和后端数据库进行心跳检查的语句。例如：MYSQL 可以使用 select user()，Oracle 可以使用 select 1 from dual 等。<br>&emsp;&emsp;这个标签还有一个 connectionInitSql 属性，主要是当使用 Oracla 数据库时，需要执行的初始化 SQL 语句就放到这里面来。例如：alter session set nls_date_format=’yyyy-mm-dd hh24:mi:ss ‘<br>1.4 主从切换的语句必须是：show slave status  </p>
+</li>
+<li><p>writeHost /readHost 标签<br>&emsp;&emsp;这两个标签都指定后端数据库的相关配置，用于实例化后端连接池。唯一不同的是，writeHost 指定写实例、readHost 指定读实例。<br>&emsp;&emsp;在一个 dataHost 内可以定义多个 writeHost 和 readHost。但是，如果 writeHost 指定的后端数据库宕机，那么这个 writeHost 绑定的所有 readHost 都将不可用。<br>&emsp;&emsp;另一方面，由于这个 writeHost 宕机，系统会自动的检测到，并切换到备用的 writeHost 上去。这两个标签的属性相同，这里就一起介绍。<br>—host    用于标识不同实例，一般 writeHost 我们使用<em>M</em>1，readHost我们用<em>S</em>1。<br>—url    后端实例连接地址。Native：地址：端口 JDBC：jdbc的url<br>—password    后端存储实例需要的密码<br>—user    后端存储实例需要的用户名字<br>—weight    权重 配置在 readhost 中作为读节点的权重<br>—usingDecrypt    是否对密码加密，默认0。具体加密方法看官方文档。  </p>
+</li>
+</ol>
+</li>
+</ol>
+]]></content>
       <categories>
-        <category>net</category>
+        <category>middleware</category>
       </categories>
       <tags>
-        <tag>ccna</tag>
-        <tag>net</tag>
+        <tag>middleware</tag>
+        <tag>linux</tag>
+        <tag>mycat</tag>
+        <tag>db</tag>
       </tags>
   </entry>
   <entry>
-    <title>CCNA学习笔记五 -- ACL</title>
-    <url>/2018/08/28/theory/ccna/ccna-5/</url>
-    <content><![CDATA[<h4 id="网络安全"><a href="#网络安全" class="headerlink" title="网络安全"></a>网络安全</h4><p>物理层安全 墙上不用的网线接口，连接交换机的端口关掉<br>数据链路层安全 ADSL拨号账号和密码 MAC地址绑定 交换机连接计算机数量控制 创建VLAN<br>网络层安全 基于源ip地址目标IP地址的控制<br>传输层安全 会话攻击 LAND攻击 syn洪水攻击<br>应用层安全 登录密码  </p>
-<h4 id="网络层安全"><a href="#网络层安全" class="headerlink" title="网络层安全"></a>网络层安全</h4><p>标准的ACL  基于源地址进行控制<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#config terminal  </span><br><span class="line">(config)#access-list 10 deny host 192.168.1.2</span><br><span class="line">(config)#access-list 10 permit 192.168.1.0 0.0.0.255 允许192.168.1.0访问，使用翻转子网掩码</span><br><span class="line">(config)(config)#interface serial 3/0</span><br><span class="line">(config-if)#ip access-group 10 in/out 绑定控制列表到物理接口并确定出还是进检查访问列表</span><br><span class="line">(config)#no access-list 10 删除ACL10</span><br><span class="line">ACL的顺序影响访问控制</span><br><span class="line">扩展的ACL  基于源地址、目标地址、协议、端口号进行控制</span><br><span class="line">(config)#access-list 100 permit ip 192.168.1.0 0.0.0.255 any 允许192.168.1.0/24访问任何</span><br><span class="line">(config)#access-list 100 permit tcp 192.18.2.0 0.0.0.255 10.0.0.0 0.0.0.255 eq 80 允许192.18.2.0/24访问10.0.0.0/8上的web服务器</span><br><span class="line">(config)#access-list 100 permit icmp 192.18.2.0 0.0.0.255 any 允许192.18.2.0/24ping任何因特网</span><br></pre></td></tr></table></figure><br>将acl绑定到telnet接口<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config-line)#access-class 10 in/out </span><br></pre></td></tr></table></figure></p>
-<h4 id="acl具体应用"><a href="#acl具体应用" class="headerlink" title="acl具体应用"></a>acl具体应用</h4><ol>
-<li>入站————决不允许任何源地址是内部主机地址或网络地址的数据包进入一个私有的网络<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#access-list 150 deny ip 127.0.0.0 0.255.255.255 any log</span><br><span class="line">#access-list 150 deny ip 0.0.0.0 255.255.255.255 any log</span><br><span class="line">#access-list 150 deny ip 10.0.0.0 0.255.255.255 any log</span><br><span class="line">#access-list 150 deny ip 127.16.0.0 0.15.255.255 any log</span><br><span class="line">#access-list 150 deny ip 192.168.0.0 0.0.255.255 any log</span><br><span class="line">#access-list 150 deny ip 224.0.0.0 15.255.255.255 any log</span><br><span class="line">#access-list 150 deny ip host 255.255.255.255 any log</span><br><span class="line">#access-list 150 permit ip any any</span><br></pre></td></tr></table></figure></li>
-<li>出站————决不允许任何含有非内部网络有效的ip数据包出站<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#access-list 150 permit 192.168.0.0 0.0.255.255 any</span><br><span class="line">#access-list 150 deny ip any any log</span><br></pre></td></tr></table></figure></li>
-<li>阻塞外部访问<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#access-list 109 permit any 192.268.0.0 0.0.255.255 established </span><br><span class="line">#access-list 109 deny ip any any log</span><br></pre></td></tr></table></figure></li>
-<li>过滤ICMP消息————禁止ping命令进内网<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#access-list 112 deny icmp any any echo log </span><br><span class="line">#access-list 112 deny icmp any any redirect log </span><br><span class="line">#access-list 112 deny icmp any any mask-request log</span><br><span class="line">#access-list 112 permit icmp any 192.168.0.0 0.0.255.255  </span><br></pre></td></tr></table></figure></li>
+    <title>nginx的使用（一）-- 简单的安装使用</title>
+    <url>/2018/08/25/using/middleware/nginx-1/</url>
+    <content><![CDATA[<h2 id="一、nginx简介"><a href="#一、nginx简介" class="headerlink" title="一、nginx简介"></a>一、nginx简介</h2><h4 id="1、nginx是什么"><a href="#1、nginx是什么" class="headerlink" title="1、nginx是什么"></a>1、nginx是什么</h4><p>Nginx (engine x) 是一个高性能的HTTP和反向代理服务，也是一个IMAP/POP3/SMTP服务。其特点是占有内存少，并发能力强，事实上nginx的并发能力确实在同类型的网页服务器中表现较好。</p>
+<h4 id="2、nginx可以用来做什么（不加载第三方模块）"><a href="#2、nginx可以用来做什么（不加载第三方模块）" class="headerlink" title="2、nginx可以用来做什么（不加载第三方模块）"></a>2、nginx可以用来做什么（不加载第三方模块）</h4><ol>
+<li>反向代理</li>
+<li>负载均衡</li>
+<li>HTTP服务器（包含动静分离）</li>
+<li>正向代理</li>
+<li>缓存</li>
 </ol>
+<h2 id="二、nginx安装以及简单的配置"><a href="#二、nginx安装以及简单的配置" class="headerlink" title="二、nginx安装以及简单的配置"></a>二、nginx安装以及简单的配置</h2><h4 id="1、安装nginx（环境-centos7）"><a href="#1、安装nginx（环境-centos7）" class="headerlink" title="1、安装nginx（环境 centos7）"></a>1、安装nginx（环境 centos7）</h4><p>采取最简单的方法，yum install nginx -y</p>
+<h4 id="2、配置nginx"><a href="#2、配置nginx" class="headerlink" title="2、配置nginx"></a>2、配置nginx</h4><p>① 修改user为root（你用来启动nginx的账户）<br>② 添加转发服务器<br><figure class="highlight vim"><table><tr><td class="code"><pre><span class="line">upstream web_server&#123; # 名字随便起</span><br><span class="line">   server <span class="number">127.0</span>.<span class="number">0.1</span>:<span class="number">8080</span>  max_fails=<span class="number">1</span>  fail_timeout=<span class="number">10</span>s;  #Tomcat服务器<span class="number">1</span> ip</span><br><span class="line">   server <span class="number">127.0</span>.<span class="number">0.2</span>:<span class="number">8080</span>  max_fails=<span class="number">1</span>  fail_timeout=<span class="number">10</span>s;  #Tomcat服务器<span class="number">2</span> ip</span><br><span class="line">   #注意服务器的ip以及端口不要重复</span><br><span class="line">   ...</span><br><span class="line">&#125;</span><br><span class="line">server &#123;</span><br><span class="line">    listen       <span class="number">80</span> default_server;</span><br><span class="line">    listen       [::]:<span class="number">80</span> default_server;</span><br><span class="line">    server_name  _;</span><br><span class="line">    root         /usr/share/nginx/html;</span><br><span class="line">    # Load configuration <span class="keyword">files</span> <span class="keyword">for</span> the default server block.</span><br><span class="line">    include /etc/nginx/default.d/*.<span class="keyword">conf</span>;</span><br><span class="line">    location / &#123;</span><br><span class="line">        proxy_pass  http://web_server;   #和上边定义的upstream 对应起来</span><br><span class="line">        proxy_connect_timeout <span class="number">10</span>;</span><br><span class="line">        proxy_read_timeout  <span class="number">10</span>;</span><br><span class="line">        proxy_send_timeout  <span class="number">10</span>;</span><br><span class="line">    &#125;</span><br><span class="line">    error_page <span class="number">404</span> /<span class="number">404</span>.html;</span><br><span class="line">        location = /<span class="number">40</span><span class="keyword">x</span>.html &#123;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    error_page <span class="number">500</span> <span class="number">502</span> <span class="number">503</span> <span class="number">504</span> /<span class="number">50</span><span class="keyword">x</span>.html;</span><br><span class="line">        location = /<span class="number">50</span><span class="keyword">x</span>.html &#123;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure></p>
+<h4 id="3、nginx的启动、停止、重启"><a href="#3、nginx的启动、停止、重启" class="headerlink" title="3、nginx的启动、停止、重启"></a>3、nginx的启动、停止、重启</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">systemctl start nginx <span class="comment">#启动nginx</span></span><br><span class="line">systemctl stop nginx <span class="comment">#停止nginx</span></span><br><span class="line">systemctl restart nginx <span class="comment">#重新启动nginx</span></span><br><span class="line">systemctl <span class="built_in">enable</span> nginx <span class="comment">#开机启动nginx</span></span><br></pre></td></tr></table></figure>
+<h4 id="4、nginx踩过的一些坑"><a href="#4、nginx踩过的一些坑" class="headerlink" title="4、nginx踩过的一些坑"></a>4、nginx踩过的一些坑</h4><p>selinux引起的权限访问受限问题，cat /var/log/Audit/Audit.log 发现有nginx访问阻止记录<br><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="built_in">type</span>=AVC msg=audit(1416406823.013:3137): avc:  denied  &#123; search &#125; <span class="keyword">for</span>  pid=15488 <span class="built_in">comm</span>=<span class="string">&quot;nginx&quot;</span> name=<span class="string">&quot;www&quot;</span> dev=<span class="string">&quot;dm-3&quot;</span> ino=146 scontext=system_u:system_r:httpd_t:s0 tcontext=unconfined_u:object_r:user_home_dir_t:s0 tclass=<span class="built_in">dir</span></span><br></pre></td></tr></table></figure><br>解决方案1、（<font color="red">建议采用</font>）<br>设置selinux允许nginx<br><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">yum install policycoreutils-python</span><br><span class="line"><span class="built_in">cat</span> /var/log/audit/audit.log | grep nginx | grep denied | audit2allow -M mynginx</span><br><span class="line">semodule -i mynginx.pp</span><br></pre></td></tr></table></figure><br>解决方案2.1、<br>临时关闭selinux<br><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">setenforce 0  <span class="comment">#重启后失效</span></span><br></pre></td></tr></table></figure><br>解决方案2.2、<br>永久关闭selinux</p>
+<p>打开 selinux 配置文件<br><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">vim /etc/selinux/config</span><br></pre></td></tr></table></figure><br>修改 selinux 配置文件<br>将SELINUX=enforcing改为SELINUX=disabled，保存后退出<br><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line"><span class="comment"># This file controls the state of SELinux on the system.</span></span><br><span class="line"><span class="comment"># SELINUX= can take one of these three values:</span></span><br><span class="line"><span class="comment">#     enforcing - SELinux security policy is enforced.</span></span><br><span class="line"><span class="comment">#     permissive - SELinux prints warnings instead of enforcing.</span></span><br><span class="line"><span class="comment">#     disabled - No SELinux policy is loaded.</span></span><br><span class="line">SELINUX=enforcing</span><br><span class="line"><span class="comment"># SELINUXTYPE= can take one of three two values:</span></span><br><span class="line"><span class="comment">#     targeted - Targeted processes are protected,</span></span><br><span class="line"><span class="comment">#     minimum - Modification of targeted policy. Only selected processes are protected.</span></span><br><span class="line"><span class="comment">#     mls - Multi Level Security protection.</span></span><br><span class="line">SELINUXTYPE=targeted</span><br></pre></td></tr></table></figure><br>重启电脑（<font color="red">一定重启</font>，否则无效）</p>
 ]]></content>
       <categories>
-        <category>net</category>
+        <category>linux</category>
       </categories>
       <tags>
-        <tag>ccna</tag>
-        <tag>net</tag>
+        <tag>linux</tag>
+        <tag>nginx</tag>
       </tags>
   </entry>
   <entry>
-    <title>CCNA学习笔记六 -- NAT</title>
-    <url>/2018/08/28/theory/ccna/ccna-6/</url>
-    <content><![CDATA[<h4 id="地址转换技术"><a href="#地址转换技术" class="headerlink" title="地址转换技术"></a>地址转换技术</h4><ol>
-<li>内网能够主动访问外网，外网不能主动访问内网，相对而言内网更安全一些  </li>
-<li>节省公网ip地址  </li>
-<li>缺点 慢  <h4 id="NAT（网络地址转换）"><a href="#NAT（网络地址转换）" class="headerlink" title="NAT（网络地址转换）"></a>NAT（网络地址转换）</h4>静态NAT 动态NAT  不节省公网地址、一个公网替换一个内网地址<br>PAT（端口地址转换）  节省公网ip、替换源端口和源地址  <figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#debug ip packet 开启数据包转发显示</span><br></pre></td></tr></table></figure>
-</li>
+    <title>nginx的使用（二）-- 详细了解Nginx</title>
+    <url>/2018/09/01/using/middleware/nginx-2/</url>
+    <content><![CDATA[<h4 id="为什么使用Nginx"><a href="#为什么使用Nginx" class="headerlink" title="为什么使用Nginx"></a>为什么使用Nginx</h4><ol>
+<li>更快<br>&emsp;&emsp;主要表现在两个方面：1，正常情况下，单次请求会得到更快的响应；2，在高峰期（数以万计的并发请求），Nginx可以比其他web服务器更快地请求响应。</li>
+<li>高扩展性<br>&emsp;&emsp;它完全是由多个不同功能、 不同层次、 不同类型且耦合度低的模块组成。</li>
+<li>高可靠性<br> &emsp;&emsp;Nginx 的高可靠性来自于其核心框架代码的优秀设计、 模块设计的简单性。每个 worker进程相对独立， master 进程在 1 个 worker 进程出错时可以快速“拉起”新的 worker 子进程提供服务。</li>
+<li>低内存消耗<br> &emsp;&emsp;一般情况下， 10 000 个非活跃的 HTTP Keep-Alive 连接在 Nginx 中仅消耗 2.5MB 的内存， 这是 Nginx 支持高并发连接的基础。</li>
+<li>单机支持 10 万以上的并发连接   </li>
+<li>热部署<br> &emsp;&emsp;可以在 7×24 小时不间断服务的前提下， 升级 Nginx 的可执行文件。 当然， 它也支持不停止服务就更新配置项、 更换日志文件等功能。</li>
+<li>最自由的BSD许可协议<br> &emsp;&emsp;允许用户在自己的项目中直接使用或修改 Nginx 源码。</li>
+</ol>
+<h4 id="使用Nginx的必备软件"><a href="#使用Nginx的必备软件" class="headerlink" title="使用Nginx的必备软件"></a>使用Nginx的必备软件</h4><ol>
+<li>GCC编译器<br>&emsp;&emsp;用来编译nginx的各个模块  </li>
+<li>PCRE库<br>&emsp;&emsp;PCRE（Perl Compatible Regular Expressions， Perl 兼容正则表达式） 是由 Philip Hazel开发的函数库， 目前为很多软件所使用， 该库支持正则表达式。当然，如果不打算在nginx中使用正则表达式，那么这个就不是必需的。</li>
+<li>zlib库<br> &emsp;&emsp;zlib 库用于对 HTTP 包的内容做 gzip 格式的压缩， 如果我们在 nginx.conf 里配置了 gzip on， 并指定对于某些类型（content-type） 的 HTTP 响应使用 gzip 来进行压缩以减少网络传， 那么， 在编译时就必须把 zlib 编译进 Nginx。</li>
+<li>OpenSSL 开发库<br>&emsp;&emsp;在SSL 协议上传输 HTTP，以及使用MD5、 SHA1 等散列函数都需要OpenSSL 开发库的支持。<h4 id="运行中的Nginx进程间的关系"><a href="#运行中的Nginx进程间的关系" class="headerlink" title="运行中的Nginx进程间的关系"></a>运行中的Nginx进程间的关系</h4><center>
+<img src="https://www.zhangbohan.com.cn/images/nginx/nginx-1.png" src="ngix进程间关系" />
+</center><br>&emsp;&emsp;部署 Nginx 时都是使用一个 master 进程来管理多个worker 进程， 一般情况下， worker 进程的数量与服务器上的 CPU 核心数相等。</li>
+</ol>
+<h4 id="Nginx文件路径的常用定义"><a href="#Nginx文件路径的常用定义" class="headerlink" title="Nginx文件路径的常用定义"></a>Nginx文件路径的常用定义</h4><ol>
+<li>以 root 方式设置资源路径<br>语法： root path;<br>默认： root html;<br>配置块： http、 server、 location、 if<br>&emsp;&emsp;例如， 定义资源文件相对于 HTTP 请求的根目录。 <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line">location /download/ &#123;</span><br><span class="line">    root /opt/web/html/;</span><br><span class="line">&#125; </span><br></pre></td></tr></table></figure>
+ &emsp;&emsp;在上面的配置中， 如果有一个请求的 URI 是 /download/index/test.html， 那么 Web 服务器将会返回服务器上 /opt/web/html/download/index/test.html 文件的内容。 </li>
+<li>以 alias 方式设置资源路径<br>语法： alias path;<br>配置块： location<br>&emsp;&emsp;alias 也是用来设置文件资源路径的， 它与 root 的不同点主要在于如何解读紧跟 location后面的 uri 参数， 这将会致使 alias 与 root 以不同的方式将用户请求映射到真正的磁盘文件上。 例如， 如果有一个请求的 URI 是 /conf/nginx.conf， 而用户实际想访问的文件在 /usr/local/nginx/conf/nginx.conf， 那么想要使用 alias 来进行设置的话， 可以采用如下方式： <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line">location /conf &#123;</span><br><span class="line">alias /usr/local/nginx/conf/;</span><br><span class="line">&#125; </span><br></pre></td></tr></table></figure>
+ 如果用 root 设置， 那么语句如下所示： <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line">location /conf &#123;</span><br><span class="line">root /usr/local/nginx/;</span><br><span class="line">&#125; </span><br></pre></td></tr></table></figure>
+ alias 后面还可以添加正则表达式， 例如： <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line">location ~ ^/test/(\w+)\.(\w+)$ &#123;</span><br><span class="line">alias /usr/local/nginx/$2/$1.$2;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
+ &emsp;&emsp;这样， 请求在访问 /test/nginx.conf 时， Nginx 会返回 /usr/local/nginx/conf/nginx.conf 文件中的内容。</li>
+<li>访问首页<br>语法： index file …;<br>默认： index index.html;<br>配置块： http、 server、 location<br>&emsp;&emsp;有时， 访问站点时的 URI 是 /， 这时一般是返回网站的首页， 而这与 root 和 alias 都不同。 这里用 ngx_http_index_module 模块提供的 index 配置实现。 index 后可以跟多个文件参数， Nginx 将会按照顺序来访问这些文件， 例如：   <figure class="highlight xml"><table><tr><td class="code"><pre><span class="line">location / &#123;</span><br><span class="line">root path;</span><br><span class="line">index /index.html /html/index.php /index.php;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure></li>
 </ol>
-<h4 id="路由器上配置PAT"><a href="#路由器上配置PAT" class="headerlink" title="路由器上配置PAT"></a>路由器上配置PAT</h4><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#access-list 10 permit 10.0.0.0 0.0.0.255 定义内网地址池</span><br><span class="line">(config)#ip nat pool name 131.107.0.1 131.107.0.1 netmask 255.255.255.0定义一个名为name的公网地址池从.0.1到.0.1</span><br><span class="line">(config)#ip nat inside source list 10 pool name overload  10列表绑定到name，overload表示PAT，不加overload表示NAT</span><br><span class="line">(config)#interface serial 0/0</span><br><span class="line">(config-if)#ip nat outside  0/0公网出口</span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#interface serial 0/1</span><br><span class="line">(config-if)#ip nat inside   0/1内网入口</span><br></pre></td></tr></table></figure>
-<p>端口映射 使公网地址可以访问内网地址<br>路由端口映射<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ip nat inside source static tcp 10.0.0.6 80 137.107.0.1 80 端口映射</span><br></pre></td></tr></table></figure></p>
 ]]></content>
       <categories>
-        <category>net</category>
+        <category>linux</category>
       </categories>
       <tags>
-        <tag>ccna</tag>
-        <tag>net</tag>
+        <tag>linux</tag>
+        <tag>nginx</tag>
       </tags>
   </entry>
   <entry>
-    <title>CCNA学习笔记七 -- IPv6</title>
-    <url>/2018/08/28/theory/ccna/ccna-7/</url>
-    <content><![CDATA[<h4 id="DoD模型"><a href="#DoD模型" class="headerlink" title="DoD模型"></a>DoD模型</h4><p>应用层 Telent、FTP、SMTP、DNS、HTTP以及其他应用协议<br>传输层 TCP、UDP<br>网络层 ND、MLD、ICMPv6、IPv6<br>网络接口 各种通信网络接口（以太网等物理网络）  </p>
-<h4 id="IPv6地址（128位）"><a href="#IPv6地址（128位）" class="headerlink" title="IPv6地址（128位）"></a>IPv6地址（128位）</h4><ol>
-<li>首选的格式<br>128比特分成8段，每段的16比特用16进制表示，中间用:隔开<br>xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx</li>
-<li>压缩格式，允许0压缩<br>xxxx:xxxx::xx:xxx:x:xxxx<br>一对::在一个地址中只能出现1次</li>
-<li>IPv4构造IPv6<br>0:0:0:0:0:0:192.168.0.1或者::192.168.0.1</li>
-<li>子网掩码<br>xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx/n 前n位是网络部分，后边是主机部分<h4 id="单播地址"><a href="#单播地址" class="headerlink" title="单播地址"></a>单播地址</h4>全球路由前缀  |子网|接口ID<br>2001:0db8:3c4d:0012:a:d:1234:56ab<br>链路本地地址 link local address  该地址用于同一网段中IPv6计算机通信<br>多播地址<br>任播地址  </li>
-</ol>
-<p>::  相当于0.0.0.0<br>::1 相当于127.0.0.1<br>2000::/3 全球单播地址范围，前三位是001<br>FE80::/10 链路本地单播地址<br>FF00::/8 组播地址范围<br>3FFF:FFFF::/32 示例和文档保留地址<br>2001:oDB8::/32 示例和文档保留地址<br>2002::/16 用于IPv6到IPv4的转换系统</p>
-<h4 id="IPv6地址分配"><a href="#IPv6地址分配" class="headerlink" title="IPv6地址分配"></a>IPv6地址分配</h4><ol>
-<li>静态</li>
-<li>自动<br>无状态 向路由器发送路由前缀请求，配置IPv6的路由器接口收到，然后发送路由通告，计算机获得网络部分+自己的MAC地址，进行构造IPv6地址<br>有DHCP服务器 路由通告中M=1，则向DHCP服务器请求ip地址；路由通告中O=1，则向DHCP服务器请求其他设置如DNS服务器、搜索后缀等  </li>
-</ol>
-<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ipv6 unicast-routing 启用IPv6</span><br><span class="line">(config)#interface fastEthernet 0/0</span><br><span class="line">(config-if)#ipv6 address 2001:13::1/64</span><br><span class="line"></span><br><span class="line">(config-if)#ipv6 nd managed-config-flag  令路由通告中M=1</span><br><span class="line">(config-if)#ipv6 nd other-config-flag 令路由通告中O=1</span><br></pre></td></tr></table></figure>
-<h4 id="IPv6路由添加"><a href="#IPv6路由添加" class="headerlink" title="IPv6路由添加"></a>IPv6路由添加</h4><h5 id="静态路由"><a href="#静态路由" class="headerlink" title="静态路由"></a>静态路由</h5><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">#show ipv6 interface fastEthernet 0/0 </span><br><span class="line">#show ipv6 route 查看IPv6路由表查</span><br><span class="line">(config)#ipv6 route 2001:1::/64 2001:1::1</span><br><span class="line">(config-if)#ipv6 address 2001:1::/64 eui-64 自己根据前缀和自己的MAC地址构造IPv6地址</span><br><span class="line">(config-if)#ipv6 address 2001:1::1/64 </span><br></pre></td></tr></table></figure>
-<h5 id="动态路由"><a href="#动态路由" class="headerlink" title="动态路由"></a>动态路由</h5><ol>
-<li>RIPng协议<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ipv6 unicast-routing</span><br><span class="line">(config)#ipv6 router rip 1</span><br><span class="line">(config-rtr)#exit</span><br><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 rip 1 enable</span><br></pre></td></tr></table></figure></li>
-<li>EIGRPv6协议<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ipv6 unicast-routing</span><br><span class="line">(config)#ipv6 router eigrp 10</span><br><span class="line">(config-rtr)#no shutdown</span><br><span class="line">(config-rtr)#router-id 4.0.0.1</span><br><span class="line">(config-rtr)#exit</span><br><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 eigrp 10 </span><br></pre></td></tr></table></figure></li>
-<li>OSPFv3协议<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ipv6 unicast-routing</span><br><span class="line">(config)#ipv6 router ospf 1</span><br><span class="line">(config-rtr)#router-id 4.0.0.1</span><br><span class="line">(config-rtr)#exit</span><br><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 ospf 1 area 0</span><br></pre></td></tr></table></figure>
-</li>
-</ol>
-<h4 id="IPv4和IPv6共存技术"><a href="#IPv4和IPv6共存技术" class="headerlink" title="IPv4和IPv6共存技术"></a>IPv4和IPv6共存技术</h4><p>双协议栈</p>
-<ol>
-<li>IPv6 to IPv4隧道技术<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#ipv6 unicast-routing</span><br><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 address 2001:1::1/64 </span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#interface tunnel 0 隧道虚拟端口</span><br><span class="line">(config-if)#no shutdown</span><br><span class="line">(config-if)#ipv6 address 2001:2::1/64 给隧道虚拟端口配置IPv6</span><br><span class="line">(config-if)#tunnel source 10.0.0.1  隧道源地址</span><br><span class="line">(config-if)#tunnel destination 10.0.1.2 隧道目标地址</span><br><span class="line">(config-if)#tunnel mode ipv6ip 设置隧道加密模式</span><br><span class="line">(config-if)#exit</span><br></pre></td></tr></table></figure></li>
-<li>ISATAP隧道<ol>
-<li>配置ISATAP路由(该路由与IPv4网络接口为192.168.0.2) <figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#interface tunnel 0</span><br><span class="line">(config-if)#ipv6 address 2001:1::/64 eui-64</span><br><span class="line">(config-if)#no ipv6 nd suppress-ra</span><br><span class="line">(config-if)#tunnel source 10.0.0.1</span><br><span class="line">(config-if)#tunnel mode ipv6ip isatap</span><br><span class="line">(config-if)#no shutdown</span><br></pre></td></tr></table></figure></li>
-<li>windows下 <figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">&gt;netsh</span><br><span class="line">netsh&gt;interface</span><br><span class="line">netsh interface&gt;ipv6</span><br><span class="line">netsh interface ipv6&gt;isatap</span><br><span class="line">netsh interface ipv6 isatap&gt;set router 192.168.0.2</span><br></pre></td></tr></table></figure></li>
-</ol>
-</li>
-<li><p>静态NAT-PT</p>
-<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 nat </span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#interface serial 1/0</span><br><span class="line">(config-if)#ipv6 nat </span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#ipv6 nat v6v4 source 10.0.0.2 2001:2::2 </span><br><span class="line">(config)#ipv6 nat v6v4 source 2001:2::4 10.0.0.4</span><br><span class="line">(config)#ipv6 prefix 2001:3::/96</span><br></pre></td></tr></table></figure>
-</li>
-<li><p>动态NAT-PT 只能由IPv6网络主动向IPv4网络发起通信</p>
-<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">(config)#interface fastEthernet 0/1</span><br><span class="line">(config-if)#ipv6 nat </span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#interface serial 1/0</span><br><span class="line">(config-if)#ipv6 nat </span><br><span class="line">(config-if)#exit</span><br><span class="line">(config)#ipv6 access-list v4map </span><br><span class="line">(config-ipv6-acl)#permit 2001:2::/64 any </span><br><span class="line">(config-ipv6-acl)#exit</span><br><span class="line">(config)#ipv6 access-list v6map</span><br><span class="line">(config-ipv6-acl)#permit 2001:2::/64 any </span><br><span class="line">(config-ipv6-acl)#exit</span><br><span class="line">(config)#ipv6 nat</span><br><span class="line">(config)#ipv6 nat v6v4 pool v4pool 10.0.2.100 10.0.2.200 prefix-length 24 </span><br><span class="line">(config)#ipv6 nat v6v4 source list v6list pool v4pool </span><br><span class="line">(config)#ipv6 nat prefix 2001::/96 v4-mapped v4map  2001::/96用v4map里的地址替代</span><br></pre></td></tr></table></figure></li>
-</ol>
+    <title>nginx的使用（三）-- 使用gzip加速页面加载</title>
+    <url>/2019/10/18/using/middleware/nginx-3/</url>
+    <content><![CDATA[<h3 id="介绍"><a href="#介绍" class="headerlink" title="介绍"></a>介绍</h3><p>Nginx实现资源压缩的原理是通过ngx_http_gzip_module模块拦截请求，并对需要做gzip的类型做gzip，ngx_http_gzip_module是Nginx默认集成的，不需要重新编译，直接开启即可。  </p>
+<h3 id="配置说明"><a href="#配置说明" class="headerlink" title="配置说明"></a>配置说明</h3><pre><code class="lang-bash">    #$gzip_ratio计算请求的压缩率，$body_bytes_sent请求体大小
+    log_format  main  &#39;$remote_addr - $remote_user [$time_local] &quot;$host&quot; - &quot;$request&quot; &#39;
+                    &#39;$gzip_ratio - $body_bytes_sent - $request_time&#39;;
+    access_log  logs/access.log  main;
+    # 开启gzip
+    gzip off;
+    # 启用gzip压缩的最小文件，小于设置值的文件将不会压缩
+    # 当返回内容大于此值时才会使用gzip进行压缩,以K为单位,当值为0时，所有页面都进行压缩。
+    gzip_min_length 1k;
+    # gzip 压缩级别，1-9，数字越大压缩的越好，也越占用CPU时间，后面会有详细说明
+    # 随着压缩级别的升高，压缩比有所提高，但到了级别6后，很难再提高；
+    # 随着压缩级别的升高，处理时间明显变慢；
+    # gzip很消耗cpu的性能，高并发情况下cpu达到100%
+    gzip_comp_level 1;
+    # 进行压缩的文件类型。javascript有多种形式。其中的值可以在 mime.types 文件中找到。
+    gzip_types text/plain application/javascript application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png application/vnd.ms-fontobject font/ttf font/opentype font/x-woff image/svg+xml;
+    # 是否在http header中添加Vary: Accept-Encoding，建议开启
+    gzip_vary on;
+    # 禁用IE 6 gzip
+    # 通过表达式，表明哪些UA头不使用gzip压缩
+    gzip_disable &quot;MSIE [1-6]\.&quot;;
+    # 设置压缩所需要的缓冲区大小  
+    # 设置用于处理请求压缩的缓冲区数量和大小。比如32 4K表示按照内存页（one memory page）大小以4K为单位（即一个系统中内存页为4K），申请32倍的内存空间。建议此项不设置，使用默认值
+    gzip_buffers 32 4k;
+    # 设置gzip压缩针对的HTTP协议版本
+    # 用于识别http协议的版本，早期的浏览器不支持gzip压缩，用户会看到乱码，所以为了支持前期版本加了此选项。默认在http/1.0的协议下不开启gzip压缩。
+    gzip_http_version 1.0;
+</code></pre>
 ]]></content>
       <categories>
-        <category>net</category>
+        <category>linux</category>
       </categories>
       <tags>
-        <tag>ccna</tag>
-        <tag>net</tag>
+        <tag>linux</tag>
+        <tag>nginx</tag>
       </tags>
   </entry>
   <entry>
@@ -2291,107 +2351,43 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
 <li><p>Mount ： 隔离文件系统挂载点<br>&emsp;&emsp;用来隔离文件系统挂载点，每个进程能看到的文件系统都记录在/proc/$$/mounts里，在创建了一个新的Mount Namespace后，进程系统对文件系统挂载/卸载的动作不会影响到其他Namespace。</p>
 </li>
 <li>PID ： 隔离进程ID<br>&emsp;&emsp;用于隔离进程PID号，这样一来，不同的Namespace中的进程PID号就可以是一样的了</li>
-<li>UTS ： 隔离主机名和域名<br>&emsp;&emsp;因为主机名可以代替IP，因此可以使用主机名在网络上访问某台机器，如果不做隔离，这个机制在容器里就会出问题。</li>
-<li>User ：隔离用户ID和组ID<br>&emsp;&emsp;一个进程在namespace里的用户和组ID与它在host里的ID可以不一样，最有用的地方在于可以在容器内部启用0号用户（root），但是它的特权被限定在容器内，离开容器就只是普通用户权限了</li>
-</ol>
-]]></content>
-      <categories>
-        <category>linux</category>
-      </categories>
-      <tags>
-        <tag>linux</tag>
-        <tag>kernel</tag>
-        <tag>namespace</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>数据结构 - 树</title>
-    <url>/2018/09/17/theory/algorithm/algorithm-tree/</url>
-    <content><![CDATA[<h4 id="树"><a href="#树" class="headerlink" title="树"></a>树</h4><p>&emsp;&emsp; 一棵树是一些节点的集合。如果这棵树非空，则一棵树由称作根（root）节点的r以及0个或者多个非空的(子)树组成，这些子树中每一棵的根都被来自根r的一条有向的边（edge）所连接。<br>&emsp;&emsp;每一棵子树的根叫做r的儿子，r是每一棵子树的根的父亲。没有儿子的节点称为树叶，具有相同父节点的节点称为兄弟。</p>
-]]></content>
-      <categories>
-        <category>algorithm</category>
-      </categories>
-      <tags>
-        <tag>algorithm</tag>
-        <tag>data structure</tag>
-        <tag>tree</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>分赌本问题</title>
-    <url>/2018/09/27/theory/algorithm/points_bookies/</url>
-    <content><![CDATA[<h4 id="问题描述"><a href="#问题描述" class="headerlink" title="问题描述"></a>问题描述</h4><p>&emsp;&emsp;假设A、B两个人赌博，假设每一局中每人获胜的概率是相同的，刚开始下的赌注均是100法郎，并且约定双方谁先获胜3局，谁就拿走所有的赌本，但是中途由于一些原因，不得不终止比赛，此时A胜2局，B胜1局，问此时赌本该怎么分配才均匀？<br>&emsp;&emsp;<font color ="red">注意：假设在赛点不会出现平局。</font></p>
-<h4 id="思路解析"><a href="#思路解析" class="headerlink" title="思路解析"></a>思路解析</h4><ol>
-<li>假设继续赌下去，至多两局结束</li>
-<li>若接下来的第四局A胜（1/2），则A获得所有赌注</li>
-<li>若接下来的第四局B胜（1/2），则进行第五局，第五局中，A胜（1/2*1/2=1/4）才能获得所有赌注</li>
-</ol>
-<h4 id="python模拟"><a href="#python模拟" class="headerlink" title="python模拟"></a>python模拟</h4><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="comment">#!/usr/bin/env python3</span></span><br><span class="line"><span class="comment"># -*- coding: utf-8 -*-</span></span><br><span class="line"><span class="string">&quot;&quot;&quot; @author zhangbohan.dell@gmail.com</span></span><br><span class="line"><span class="string">    @function: 分赌本问题</span></span><br><span class="line"><span class="string">    @create 2018/9/27 11:00&quot;&quot;&quot;</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> random</span><br><span class="line"></span><br><span class="line"><span class="string">&#x27;&#x27;&#x27;</span></span><br><span class="line"><span class="string">:param n 赢钱所需要的局数</span></span><br><span class="line"><span class="string">:param n1 第一个人已经赢得局数</span></span><br><span class="line"><span class="string">:param n2 第二个人已经赢得局数</span></span><br><span class="line"><span class="string">本程序中取n =3,n1 = 2,n2 = 1</span></span><br><span class="line"><span class="string">&#x27;&#x27;&#x27;</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">Bookies</span>(<span class="params">n, n1, n2</span>):</span><br><span class="line">    <span class="keyword">for</span> i <span class="keyword">in</span> <span class="built_in">range</span>(<span class="number">2</span> * n - n1 - n2 - <span class="number">1</span>):</span><br><span class="line">        D = random.randint(<span class="number">1</span>, <span class="number">2</span>)</span><br><span class="line">        <span class="keyword">if</span> D == <span class="number">1</span>:</span><br><span class="line">            n1 += <span class="number">1</span></span><br><span class="line">        <span class="keyword">else</span>:</span><br><span class="line">            n2 += <span class="number">1</span></span><br><span class="line">        <span class="keyword">if</span> n1 == n:</span><br><span class="line">            <span class="keyword">return</span> <span class="number">1</span></span><br><span class="line">        <span class="keyword">if</span> n2 == n:</span><br><span class="line">            <span class="keyword">return</span> <span class="number">2</span></span><br><span class="line"></span><br><span class="line">n = <span class="number">10000</span></span><br><span class="line">win = <span class="number">0</span></span><br><span class="line"><span class="keyword">for</span> i <span class="keyword">in</span> <span class="built_in">range</span>(n):</span><br><span class="line">    <span class="keyword">if</span> Bookies(<span class="number">3</span>, <span class="number">2</span>, <span class="number">1</span>) == <span class="number">1</span>:</span><br><span class="line">        win += <span class="number">1</span></span><br><span class="line"><span class="built_in">print</span>(<span class="string">&quot;A获得赢钱的可能为&#123;&#125;&quot;</span>.<span class="built_in">format</span>(<span class="built_in">float</span>(win / n)))</span><br></pre></td></tr></table></figure>]]></content>
-      <categories>
-        <category>probability theory</category>
-      </categories>
-      <tags>
-        <tag>algorithm</tag>
-        <tag>probability theory</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>蒙提霍尔三门问题</title>
-    <url>/2018/09/27/theory/algorithm/three-door/</url>
-    <content><![CDATA[<p>&emsp;&emsp;蒙提霍尔三门问题亦称蒙提霍尔悖论</p>
-<h4 id="问题描述"><a href="#问题描述" class="headerlink" title="问题描述"></a>问题描述</h4><p>&emsp;&emsp;参赛者会看见三扇关闭了的门，其中一扇的后面有一辆汽车，选中后面有车的那扇门可赢得该汽车，另外两扇门后面则各藏有一只山羊。当参赛者选定了一扇门，但未去开启它的时候，节目主持人开启剩下两扇门的其中一扇，露出其中一只山羊。主持人其后会问参赛者要不要换另一扇仍然关上的门。<br>&emsp;&emsp;<font color="red">问题是</font>：换另一扇门会否增加参赛者赢得汽车的机率？</p>
-<h4 id="思路解析"><a href="#思路解析" class="headerlink" title="思路解析"></a>思路解析</h4><ol>
-<li>三扇门，只有一扇门后有有汽车，其余的为山羊</li>
-<li>汽车事前等可能放置到三扇门中的其中一个</li>
-<li>参赛者等可能选择其中一扇，挑选前不知道门后有什么</li>
-<li>主持人清楚的知道门后有什么</li>
-<li>如果参赛者挑选了一扇有山羊的门，则主持人必须打开另一扇有山羊的门</li>
-<li>如果参赛者挑选了有汽车的门，主持人等可能在另外两扇有山羊的门选择一扇打开</li>
-<li>参赛者会被问保持原先选择还是转而选择另一扇门</li>
-</ol>
-<h4 id="Python模拟以上过程"><a href="#Python模拟以上过程" class="headerlink" title="Python模拟以上过程"></a>Python模拟以上过程</h4><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="comment">#!/usr/bin/env python3</span></span><br><span class="line"><span class="comment"># -*- coding: utf-8 -*-</span></span><br><span class="line"><span class="string">&quot;&quot;&quot; @author zhangbohan.dell@gmail.com</span></span><br><span class="line"><span class="string">    @function: 蒙提霍尔三门问题</span></span><br><span class="line"><span class="string">    @create 2018/9/27 10:09&quot;&quot;&quot;</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> random</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">def</span> <span class="title function_">MontyHall</span>(<span class="params">Dselect, Dchange</span>):</span><br><span class="line">    Dcar = random.randint(<span class="number">1</span>, <span class="number">3</span>)  <span class="comment"># 随机等可能放置汽车</span></span><br><span class="line">    <span class="keyword">if</span> Dcar == Dselect <span class="keyword">and</span> Dchange == <span class="number">0</span>:  <span class="comment"># 一开始选中并且没有改变选择</span></span><br><span class="line">        <span class="keyword">return</span> <span class="number">1</span></span><br><span class="line">    <span class="keyword">elif</span> Dcar != Dselect <span class="keyword">and</span> Dchange == <span class="number">0</span>:  <span class="comment"># 一开始没选中也没有改变选择</span></span><br><span class="line">        <span class="keyword">return</span> <span class="number">0</span></span><br><span class="line">    <span class="keyword">elif</span> Dcar == Dselect <span class="keyword">and</span> Dchange == <span class="number">1</span>:  <span class="comment"># 一开始选中并且改变选择</span></span><br><span class="line">        <span class="keyword">return</span> <span class="number">0</span></span><br><span class="line">    <span class="keyword">else</span>:  <span class="comment"># 一开始没选中并且改变选择</span></span><br><span class="line">        <span class="keyword">return</span> <span class="number">1</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line">n = <span class="number">10000</span></span><br><span class="line">win = <span class="number">0</span></span><br><span class="line"><span class="keyword">for</span> i <span class="keyword">in</span> <span class="built_in">range</span>(n):</span><br><span class="line">    select = random.randint(<span class="number">1</span>, <span class="number">3</span>)</span><br><span class="line">    win += MontyHall(select, random.randint(<span class="number">0</span>, <span class="number">1</span>))</span><br><span class="line"><span class="built_in">print</span>(<span class="string">&quot;不确认是够改变选择&#123;&#125;&quot;</span>.<span class="built_in">format</span>(<span class="built_in">float</span>(win / n)))</span><br><span class="line"></span><br><span class="line">win = <span class="number">0</span></span><br><span class="line"><span class="keyword">for</span> i <span class="keyword">in</span> <span class="built_in">range</span>(n):</span><br><span class="line">    select = random.randint(<span class="number">1</span>, <span class="number">3</span>)</span><br><span class="line">    win += MontyHall(select, <span class="number">0</span>)</span><br><span class="line"><span class="built_in">print</span>(<span class="string">&quot;确认不改变选择&#123;&#125;&quot;</span>.<span class="built_in">format</span>(<span class="built_in">float</span>(win / n)))</span><br><span class="line"></span><br><span class="line">win = <span class="number">0</span></span><br><span class="line"><span class="keyword">for</span> i <span class="keyword">in</span> <span class="built_in">range</span>(n):</span><br><span class="line">    select = random.randint(<span class="number">1</span>, <span class="number">3</span>)</span><br><span class="line">    win += MontyHall(select, <span class="number">1</span>)</span><br><span class="line"><span class="built_in">print</span>(<span class="string">&quot;确认改变选择&#123;&#125;&quot;</span>.<span class="built_in">format</span>(<span class="built_in">float</span>(win / n)))</span><br></pre></td></tr></table></figure>]]></content>
-      <categories>
-        <category>probability theory</category>
-      </categories>
-      <tags>
-        <tag>algorithm</tag>
-        <tag>probability theory</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>myabtis进阶</title>
-    <url>/2018/11/17/using/java/framework/springboot-myabtis/</url>
-    <content><![CDATA[<ol>
-<li><p>逆向工程  </p>
-<ol>
-<li>在数据库中建好表  </li>
-<li>配置好xml，通过逆向工程生成dao接口、实体类、xml映射文件  </li>
-<li><p>当需要添加数据操作的时候，先在xml中写好CRUD语句，然后在DAO接口层写接口，最后到映射文件  </p>
-<p>&emsp;&emsp;随着数据库表的增加、修改，我们需要做的修改随之增加，增加了不少的工作量。</p>
-</li>
-</ol>
-</li>
-<li><p>无xml的myabtis之路</p>
-<ol>
-<li>设计需要的实体类</li>
-<li>根据实体层在数据库中建表，逆向工程在数据库中生成</li>
-<li><p>当需要进行增删改查的时候，只需要在Mapper映射文件中，用对应的注解@Select、@Delete等进行相应的操作即可</p>
-<p>&emsp;&emsp;依然没有自动生成的代码</p>
-</li>
-</ol>
-</li>
-<li></li>
+<li>UTS ： 隔离主机名和域名<br>&emsp;&emsp;因为主机名可以代替IP，因此可以使用主机名在网络上访问某台机器，如果不做隔离，这个机制在容器里就会出问题。</li>
+<li>User ：隔离用户ID和组ID<br>&emsp;&emsp;一个进程在namespace里的用户和组ID与它在host里的ID可以不一样，最有用的地方在于可以在容器内部启用0号用户（root），但是它的特权被限定在容器内，离开容器就只是普通用户权限了</li>
 </ol>
 ]]></content>
       <categories>
-        <category>java</category>
+        <category>linux</category>
       </categories>
       <tags>
-        <tag>java</tag>
-        <tag>orm</tag>
-        <tag>myabtis</tag>
-        <tag>springboot</tag>
+        <tag>linux</tag>
+        <tag>kernel</tag>
+        <tag>namespace</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>mariadb使用记录</title>
+    <url>/2018/09/29/using/db/nosql/mariadb-using/</url>
+    <content><![CDATA[<h4 id="MariaDB简介"><a href="#MariaDB简介" class="headerlink" title="MariaDB简介"></a>MariaDB简介</h4><p>&emsp;&emsp;MariaDB数据库管理系统是MySQL的一个分支，主要由开源社区在维护，采用GPL授权许可 MariaDB的目的是完全兼容MySQL，包括API和命令行，使之能轻松成为MySQL的代替品。在存储引擎方面，使用XtraDB（英语：XtraDB）来代替MySQL的InnoDB。</p>
+<h4 id="安装与配置"><a href="#安装与配置" class="headerlink" title="安装与配置"></a>安装与配置</h4><p>&emsp;&emsp;记录Mariadb的安装配置过程  </p>
+<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">yum -y install mariadb mariadb-server  <span class="comment">#安装mariadb的客户端与服务端</span></span><br><span class="line">systemctl start mariadb <span class="comment"># 启动mariadb</span></span><br><span class="line">mysql_secure_installation <span class="comment"># 进行初始的设置</span></span><br><span class="line"><span class="comment"># <span class="doctag">NOTE:</span> RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB</span></span><br><span class="line"><span class="comment">#       SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># In order to log into MariaDB to secure it, we&#x27;ll need the current</span></span><br><span class="line"><span class="comment"># password for the root user.  If you&#x27;ve just installed MariaDB, and</span></span><br><span class="line"><span class="comment"># you haven&#x27;t set the root password yet, the password will be blank,</span></span><br><span class="line"><span class="comment"># so you should just press enter here.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Enter current password for root (enter for none):  #默认无密码登录</span></span><br><span class="line"><span class="comment"># OK, successfully used password, moving on...</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Setting the root password ensures that nobody can log into the MariaDB</span></span><br><span class="line"><span class="comment"># root user without the proper authorisation.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Set root password? [Y/n] y # 是否设置新的root密码</span></span><br><span class="line"><span class="comment"># New password: </span></span><br><span class="line"><span class="comment"># Re-enter new password: </span></span><br><span class="line"><span class="comment"># Password updated successfully!</span></span><br><span class="line"><span class="comment"># Reloading privilege tables..</span></span><br><span class="line"><span class="comment">#  ... Success!</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="comment"># By default, a MariaDB installation has an anonymous user, allowing anyone</span></span><br><span class="line"><span class="comment"># to log into MariaDB without having to have a user account created for</span></span><br><span class="line"><span class="comment"># them.  This is intended only for testing, and to make the installation</span></span><br><span class="line"><span class="comment"># go a bit smoother.  You should remove them before moving into a</span></span><br><span class="line"><span class="comment"># production environment.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Remove anonymous users? [Y/n] Y # 是否删除匿名用户</span></span><br><span class="line"><span class="comment">#  ... Success!</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Normally, root should only be allowed to connect from &#x27;localhost&#x27;.  This</span></span><br><span class="line"><span class="comment"># ensures that someone cannot guess at the root password from the network.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Disallow root login remotely? [Y/n] n # 是否禁止root账户远程登录</span></span><br><span class="line"><span class="comment">#  ... skipping.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># By default, MariaDB comes with a database named &#x27;test&#x27; that anyone can</span></span><br><span class="line"><span class="comment"># access.  This is also intended only for testing, and should be removed</span></span><br><span class="line"><span class="comment"># before moving into a production environment.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Remove test database and access to it? [Y/n] n # 是否删除test数据库</span></span><br><span class="line"><span class="comment">#  ... skipping.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Reloading the privilege tables will ensure that all changes made so far</span></span><br><span class="line"><span class="comment"># will take effect immediately.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Reload privilege tables now? [Y/n] y # 是否重新加载权限表</span></span><br><span class="line"><span class="comment">#  ... Success!</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Cleaning up...</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># All done!  If you&#x27;ve completed all of the above steps, your MariaDB</span></span><br><span class="line"><span class="comment"># installation should now be secure.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Thanks for using MariaDB!</span></span><br><span class="line"></span><br></pre></td></tr></table></figure>
+<h4 id="远程登录设置"><a href="#远程登录设置" class="headerlink" title="远程登录设置"></a>远程登录设置</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">mysql -uroot -p  <span class="comment">#登录mysql</span></span><br></pre></td></tr></table></figure>
+<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">GRANT ALL ON database_name.table_name TO databaseuser@&#x27;ip_address&#x27; IDENTIFIED BY &#x27;password&#x27;;</span><br><span class="line">flush privileges; #重新加载权限表</span><br></pre></td></tr></table></figure>
+<ul>
+<li>database_name 你要访问的数据库名称（*代表所有）</li>
+<li>table_name 你要访问的表名（*代表所有）</li>
+<li>databaseuser 新的数据库用户  </li>
+<li>password 设置新的密码（mysql将会对你的设置进行加密再到user表中）  </li>
+<li>ip_address 可访问的ip地址（使用%可以让所有的IP都可以访问）  </li>
+</ul>
+]]></content>
+      <categories>
+        <category>datebase</category>
+      </categories>
+      <tags>
+        <tag>linux</tag>
+        <tag>datebase</tag>
+        <tag>mysql</tag>
+        <tag>mariadb</tag>
       </tags>
   </entry>
   <entry>
@@ -2455,6 +2451,41 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
         <tag>bug</tag>
       </tags>
   </entry>
+  <entry>
+    <title>myabtis进阶</title>
+    <url>/2018/11/17/using/java/framework/springboot-myabtis/</url>
+    <content><![CDATA[<ol>
+<li><p>逆向工程  </p>
+<ol>
+<li>在数据库中建好表  </li>
+<li>配置好xml，通过逆向工程生成dao接口、实体类、xml映射文件  </li>
+<li><p>当需要添加数据操作的时候，先在xml中写好CRUD语句，然后在DAO接口层写接口，最后到映射文件  </p>
+<p>&emsp;&emsp;随着数据库表的增加、修改，我们需要做的修改随之增加，增加了不少的工作量。</p>
+</li>
+</ol>
+</li>
+<li><p>无xml的myabtis之路</p>
+<ol>
+<li>设计需要的实体类</li>
+<li>根据实体层在数据库中建表，逆向工程在数据库中生成</li>
+<li><p>当需要进行增删改查的时候，只需要在Mapper映射文件中，用对应的注解@Select、@Delete等进行相应的操作即可</p>
+<p>&emsp;&emsp;依然没有自动生成的代码</p>
+</li>
+</ol>
+</li>
+<li></li>
+</ol>
+]]></content>
+      <categories>
+        <category>java</category>
+      </categories>
+      <tags>
+        <tag>java</tag>
+        <tag>springboot</tag>
+        <tag>orm</tag>
+        <tag>myabtis</tag>
+      </tags>
+  </entry>
   <entry>
     <title>Spring Cloud(一) 简介</title>
     <url>/2018/10/11/using/java/framework/springcloud-1/</url>
@@ -2499,6 +2530,28 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
 <li>Spring Cloud CLI 用于Groovy中快速创建Spring Boot项目的Spring Boot CLI插件</li>
 <li>…</li>
 </ol>
+]]></content>
+      <categories>
+        <category>java</category>
+      </categories>
+      <tags>
+        <tag>java</tag>
+        <tag>Spring Cloud</tag>
+        <tag>Microservice</tag>
+      </tags>
+  </entry>
+  <entry>
+    <title>Spring Cloud(四) Hystrix</title>
+    <url>/2018/10/13/using/java/framework/springcloud-4/</url>
+    <content><![CDATA[<h2 id="服务容错保护：-Spring-Cloud-Hystrix"><a href="#服务容错保护：-Spring-Cloud-Hystrix" class="headerlink" title="服务容错保护： Spring Cloud Hystrix"></a>服务容错保护： Spring Cloud Hystrix</h2><p>&emsp;&emsp;在微服务架构中，我们将系统拆分为很多服务单元，因为各单元的应用间通过服务注册与订阅的方式相互依赖，并且各单元运行在不同的进程中，因此有可能因为网络原因或者自己问题出现调用服务故障或者延迟。随着服务数量的增加，故障亦随之累加，最后导致自身服务的瘫痪。为了解决这种问题，出现了断路器等一系列的保护机制。而Spring Cloud Hystrix就实现了断路器、线程隔离等一系列系统保护功能，为系统的延迟和故障提供更加强大的容错能力。</p>
+<h3 id="实现容错保护"><a href="#实现容错保护" class="headerlink" title="实现容错保护"></a>实现容错保护</h3><ol>
+<li><p>引入POM依赖</p>
+<figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="comment">&lt;!--Hystrix依赖--&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">dependency</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">groupId</span>&gt;</span>org.springframework.cloud<span class="tag">&lt;/<span class="name">groupId</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">artifactId</span>&gt;</span>spring-cloud-starter-hystrix<span class="tag">&lt;/<span class="name">artifactId</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">dependency</span>&gt;</span></span><br></pre></td></tr></table></figure>
+</li>
+<li><p>修改java类</p>
+ <figure class="highlight java"><table><tr><td class="code"><pre><span class="line"><span class="comment">//启动类 RibbonconsumerApplication.java</span></span><br><span class="line"></span><br><span class="line"><span class="meta">@SpringBootApplication</span></span><br><span class="line"><span class="meta">@EnableDiscoveryClient</span>   <span class="comment">//开启服务发现功能</span></span><br><span class="line"><span class="meta">@EnableCircuitBreaker</span>  <span class="comment">//开启断路器功能</span></span><br><span class="line"><span class="comment">//@SpringCloudApplication //该注释包含了以上三个注释（一个SpringCloud标准应用包含服务发现以及断路器）</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">RibbonconsumerApplication</span> &#123;</span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">void</span> <span class="title function_">main</span><span class="params">(String[] args)</span> &#123;</span><br><span class="line">        SpringApplication.run(RibbonconsumerApplication.class, args);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">//Service层 service/impl/HelloServiceImpl.java</span></span><br><span class="line"><span class="meta">@Service</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">HelloServiceImpl</span> <span class="keyword">implements</span> <span class="title class_">HelloService</span> &#123;</span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">final</span></span><br><span class="line">    RestTemplate restTemplate;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">public</span> <span class="title function_">HelloServiceImpl</span><span class="params">(RestTemplate restTemplate)</span> &#123;</span><br><span class="line">        <span class="built_in">this</span>.restTemplate = restTemplate;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Override</span></span><br><span class="line">    <span class="meta">@HystrixCommand(fallbackMethod = &quot;helloFallback&quot;)</span></span><br><span class="line">    <span class="keyword">public</span> String <span class="title function_">helloService</span><span class="params">()</span> &#123;</span><br><span class="line">        <span class="keyword">return</span> restTemplate.getForEntity(<span class="string">&quot;http://hello-service/hello&quot;</span>, String.class).getBody();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">public</span> String <span class="title function_">helloFallback</span><span class="params">()</span> &#123;</span><br><span class="line">        <span class="keyword">return</span> <span class="string">&quot;error&quot;</span>;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">//Controller controller/ConsumerController.java</span></span><br><span class="line"><span class="meta">@RestController</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">ConsumerController</span> &#123;</span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">final</span></span><br><span class="line">    RestTemplate restTemplate;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">final</span></span><br><span class="line">    HelloService helloService;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">public</span> <span class="title function_">ConsumerController</span><span class="params">(RestTemplate restTemplate, HelloService helloService)</span> &#123;</span><br><span class="line">        <span class="built_in">this</span>.restTemplate = restTemplate;</span><br><span class="line">        <span class="built_in">this</span>.helloService = helloService;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@RequestMapping(value = &quot;/ribbon-consumer&quot;, method = RequestMethod.GET)</span></span><br><span class="line">    <span class="keyword">public</span> String <span class="title function_">helloConsumer</span><span class="params">()</span> &#123;</span><br><span class="line">        <span class="keyword">return</span> restTemplate.getForEntity(<span class="string">&quot;http://hello-service/hello&quot;</span>, String.class).getBody();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@RequestMapping(value = &quot;/ribbon-consumer-hello-service&quot;, method = RequestMethod.GET)</span></span><br><span class="line">    <span class="keyword">public</span> String <span class="title function_">helloConsumerByHelloService</span><span class="params">()</span> &#123;</span><br><span class="line">        <span class="keyword">return</span> helloService.helloService();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@RequestMapping(value = &quot;/hello&quot;, method = RequestMethod.GET)</span></span><br><span class="line">    <span class="keyword">public</span> String <span class="title function_">hello</span><span class="params">()</span> &#123;</span><br><span class="line"></span><br><span class="line">        <span class="keyword">return</span> <span class="string">&quot;Hello World&quot;</span>;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
+</li>
+</ol>
 ]]></content>
       <categories>
         <category>java</category>
@@ -2613,28 +2666,6 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
 <li>delete(String url, Map<String, ?> uriVariables)</li>
 <li>delete(URI url)</li>
 </ol>
-]]></content>
-      <categories>
-        <category>java</category>
-      </categories>
-      <tags>
-        <tag>java</tag>
-        <tag>Spring Cloud</tag>
-        <tag>Microservice</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>Spring Cloud(四) Hystrix</title>
-    <url>/2018/10/13/using/java/framework/springcloud-4/</url>
-    <content><![CDATA[<h2 id="服务容错保护：-Spring-Cloud-Hystrix"><a href="#服务容错保护：-Spring-Cloud-Hystrix" class="headerlink" title="服务容错保护： Spring Cloud Hystrix"></a>服务容错保护： Spring Cloud Hystrix</h2><p>&emsp;&emsp;在微服务架构中，我们将系统拆分为很多服务单元，因为各单元的应用间通过服务注册与订阅的方式相互依赖，并且各单元运行在不同的进程中，因此有可能因为网络原因或者自己问题出现调用服务故障或者延迟。随着服务数量的增加，故障亦随之累加，最后导致自身服务的瘫痪。为了解决这种问题，出现了断路器等一系列的保护机制。而Spring Cloud Hystrix就实现了断路器、线程隔离等一系列系统保护功能，为系统的延迟和故障提供更加强大的容错能力。</p>
-<h3 id="实现容错保护"><a href="#实现容错保护" class="headerlink" title="实现容错保护"></a>实现容错保护</h3><ol>
-<li><p>引入POM依赖</p>
-<figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="comment">&lt;!--Hystrix依赖--&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">dependency</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">groupId</span>&gt;</span>org.springframework.cloud<span class="tag">&lt;/<span class="name">groupId</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">artifactId</span>&gt;</span>spring-cloud-starter-hystrix<span class="tag">&lt;/<span class="name">artifactId</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">dependency</span>&gt;</span></span><br></pre></td></tr></table></figure>
-</li>
-<li><p>修改java类</p>
- <figure class="highlight java"><table><tr><td class="code"><pre><span class="line"><span class="comment">//启动类 RibbonconsumerApplication.java</span></span><br><span class="line"></span><br><span class="line"><span class="meta">@SpringBootApplication</span></span><br><span class="line"><span class="meta">@EnableDiscoveryClient</span>   <span class="comment">//开启服务发现功能</span></span><br><span class="line"><span class="meta">@EnableCircuitBreaker</span>  <span class="comment">//开启断路器功能</span></span><br><span class="line"><span class="comment">//@SpringCloudApplication //该注释包含了以上三个注释（一个SpringCloud标准应用包含服务发现以及断路器）</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">RibbonconsumerApplication</span> &#123;</span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">void</span> <span class="title function_">main</span><span class="params">(String[] args)</span> &#123;</span><br><span class="line">        SpringApplication.run(RibbonconsumerApplication.class, args);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">//Service层 service/impl/HelloServiceImpl.java</span></span><br><span class="line"><span class="meta">@Service</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">HelloServiceImpl</span> <span class="keyword">implements</span> <span class="title class_">HelloService</span> &#123;</span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">final</span></span><br><span class="line">    RestTemplate restTemplate;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">public</span> <span class="title function_">HelloServiceImpl</span><span class="params">(RestTemplate restTemplate)</span> &#123;</span><br><span class="line">        <span class="built_in">this</span>.restTemplate = restTemplate;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Override</span></span><br><span class="line">    <span class="meta">@HystrixCommand(fallbackMethod = &quot;helloFallback&quot;)</span></span><br><span class="line">    <span class="keyword">public</span> String <span class="title function_">helloService</span><span class="params">()</span> &#123;</span><br><span class="line">        <span class="keyword">return</span> restTemplate.getForEntity(<span class="string">&quot;http://hello-service/hello&quot;</span>, String.class).getBody();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">public</span> String <span class="title function_">helloFallback</span><span class="params">()</span> &#123;</span><br><span class="line">        <span class="keyword">return</span> <span class="string">&quot;error&quot;</span>;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">//Controller controller/ConsumerController.java</span></span><br><span class="line"><span class="meta">@RestController</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">ConsumerController</span> &#123;</span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">final</span></span><br><span class="line">    RestTemplate restTemplate;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">final</span></span><br><span class="line">    HelloService helloService;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">public</span> <span class="title function_">ConsumerController</span><span class="params">(RestTemplate restTemplate, HelloService helloService)</span> &#123;</span><br><span class="line">        <span class="built_in">this</span>.restTemplate = restTemplate;</span><br><span class="line">        <span class="built_in">this</span>.helloService = helloService;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@RequestMapping(value = &quot;/ribbon-consumer&quot;, method = RequestMethod.GET)</span></span><br><span class="line">    <span class="keyword">public</span> String <span class="title function_">helloConsumer</span><span class="params">()</span> &#123;</span><br><span class="line">        <span class="keyword">return</span> restTemplate.getForEntity(<span class="string">&quot;http://hello-service/hello&quot;</span>, String.class).getBody();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@RequestMapping(value = &quot;/ribbon-consumer-hello-service&quot;, method = RequestMethod.GET)</span></span><br><span class="line">    <span class="keyword">public</span> String <span class="title function_">helloConsumerByHelloService</span><span class="params">()</span> &#123;</span><br><span class="line">        <span class="keyword">return</span> helloService.helloService();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@RequestMapping(value = &quot;/hello&quot;, method = RequestMethod.GET)</span></span><br><span class="line">    <span class="keyword">public</span> String <span class="title function_">hello</span><span class="params">()</span> &#123;</span><br><span class="line"></span><br><span class="line">        <span class="keyword">return</span> <span class="string">&quot;Hello World&quot;</span>;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
-</li>
-</ol>
 ]]></content>
       <categories>
         <category>java</category>
@@ -2801,32 +2832,6 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
         <tag>reconsitution</tag>
       </tags>
   </entry>
-  <entry>
-    <title>mariadb使用记录</title>
-    <url>/2018/09/29/using/db/nosql/mariadb-using/</url>
-    <content><![CDATA[<h4 id="MariaDB简介"><a href="#MariaDB简介" class="headerlink" title="MariaDB简介"></a>MariaDB简介</h4><p>&emsp;&emsp;MariaDB数据库管理系统是MySQL的一个分支，主要由开源社区在维护，采用GPL授权许可 MariaDB的目的是完全兼容MySQL，包括API和命令行，使之能轻松成为MySQL的代替品。在存储引擎方面，使用XtraDB（英语：XtraDB）来代替MySQL的InnoDB。</p>
-<h4 id="安装与配置"><a href="#安装与配置" class="headerlink" title="安装与配置"></a>安装与配置</h4><p>&emsp;&emsp;记录Mariadb的安装配置过程  </p>
-<figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">yum -y install mariadb mariadb-server  <span class="comment">#安装mariadb的客户端与服务端</span></span><br><span class="line">systemctl start mariadb <span class="comment"># 启动mariadb</span></span><br><span class="line">mysql_secure_installation <span class="comment"># 进行初始的设置</span></span><br><span class="line"><span class="comment"># <span class="doctag">NOTE:</span> RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB</span></span><br><span class="line"><span class="comment">#       SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># In order to log into MariaDB to secure it, we&#x27;ll need the current</span></span><br><span class="line"><span class="comment"># password for the root user.  If you&#x27;ve just installed MariaDB, and</span></span><br><span class="line"><span class="comment"># you haven&#x27;t set the root password yet, the password will be blank,</span></span><br><span class="line"><span class="comment"># so you should just press enter here.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Enter current password for root (enter for none):  #默认无密码登录</span></span><br><span class="line"><span class="comment"># OK, successfully used password, moving on...</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Setting the root password ensures that nobody can log into the MariaDB</span></span><br><span class="line"><span class="comment"># root user without the proper authorisation.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Set root password? [Y/n] y # 是否设置新的root密码</span></span><br><span class="line"><span class="comment"># New password: </span></span><br><span class="line"><span class="comment"># Re-enter new password: </span></span><br><span class="line"><span class="comment"># Password updated successfully!</span></span><br><span class="line"><span class="comment"># Reloading privilege tables..</span></span><br><span class="line"><span class="comment">#  ... Success!</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="comment"># By default, a MariaDB installation has an anonymous user, allowing anyone</span></span><br><span class="line"><span class="comment"># to log into MariaDB without having to have a user account created for</span></span><br><span class="line"><span class="comment"># them.  This is intended only for testing, and to make the installation</span></span><br><span class="line"><span class="comment"># go a bit smoother.  You should remove them before moving into a</span></span><br><span class="line"><span class="comment"># production environment.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Remove anonymous users? [Y/n] Y # 是否删除匿名用户</span></span><br><span class="line"><span class="comment">#  ... Success!</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Normally, root should only be allowed to connect from &#x27;localhost&#x27;.  This</span></span><br><span class="line"><span class="comment"># ensures that someone cannot guess at the root password from the network.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Disallow root login remotely? [Y/n] n # 是否禁止root账户远程登录</span></span><br><span class="line"><span class="comment">#  ... skipping.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># By default, MariaDB comes with a database named &#x27;test&#x27; that anyone can</span></span><br><span class="line"><span class="comment"># access.  This is also intended only for testing, and should be removed</span></span><br><span class="line"><span class="comment"># before moving into a production environment.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Remove test database and access to it? [Y/n] n # 是否删除test数据库</span></span><br><span class="line"><span class="comment">#  ... skipping.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Reloading the privilege tables will ensure that all changes made so far</span></span><br><span class="line"><span class="comment"># will take effect immediately.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Reload privilege tables now? [Y/n] y # 是否重新加载权限表</span></span><br><span class="line"><span class="comment">#  ... Success!</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Cleaning up...</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># All done!  If you&#x27;ve completed all of the above steps, your MariaDB</span></span><br><span class="line"><span class="comment"># installation should now be secure.</span></span><br><span class="line"></span><br><span class="line"><span class="comment"># Thanks for using MariaDB!</span></span><br><span class="line"></span><br></pre></td></tr></table></figure>
-<h4 id="远程登录设置"><a href="#远程登录设置" class="headerlink" title="远程登录设置"></a>远程登录设置</h4><figure class="highlight bash"><table><tr><td class="code"><pre><span class="line">mysql -uroot -p  <span class="comment">#登录mysql</span></span><br></pre></td></tr></table></figure>
-<figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">GRANT ALL ON database_name.table_name TO databaseuser@&#x27;ip_address&#x27; IDENTIFIED BY &#x27;password&#x27;;</span><br><span class="line">flush privileges; #重新加载权限表</span><br></pre></td></tr></table></figure>
-<ul>
-<li>database_name 你要访问的数据库名称（*代表所有）</li>
-<li>table_name 你要访问的表名（*代表所有）</li>
-<li>databaseuser 新的数据库用户  </li>
-<li>password 设置新的密码（mysql将会对你的设置进行加密再到user表中）  </li>
-<li>ip_address 可访问的ip地址（使用%可以让所有的IP都可以访问）  </li>
-</ul>
-]]></content>
-      <categories>
-        <category>datebase</category>
-      </categories>
-      <tags>
-        <tag>linux</tag>
-        <tag>datebase</tag>
-        <tag>mysql</tag>
-        <tag>mariadb</tag>
-      </tags>
-  </entry>
   <entry>
     <title>python多线程</title>
     <url>/2018/09/19/using/python/basic/python-thread/</url>
@@ -2848,6 +2853,30 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
         <tag>Thread</tag>
       </tags>
   </entry>
+  <entry>
+    <title>PyQT学习记录（二）</title>
+    <url>/2018/09/11/using/python/framework/pyqt-2/</url>
+    <content><![CDATA[<h4 id="PyQt5-程序基础解析"><a href="#PyQt5-程序基础解析" class="headerlink" title="PyQt5 程序基础解析"></a>PyQt5 程序基础解析</h4><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="keyword">import</span> sys</span><br><span class="line"><span class="keyword">import</span> time </span><br><span class="line"><span class="keyword">from</span> PyQt5.QtCore <span class="keyword">import</span> *</span><br><span class="line"><span class="keyword">from</span> PyQt5.QtGui <span class="keyword">import</span> * </span><br></pre></td></tr></table></figure>
+<ol>
+<li>导入sys模块，为了访问在sys.argv列cd cd 表中的那些命令行参数  </li>
+<li>导入time模块，使用time.sleep()  <figure class="highlight python"><table><tr><td class="code"><pre><span class="line">app = QApplication(sys.argv)</span><br></pre></td></tr></table></figure>
+&emsp;&emsp;每个PyQt GUI程序都必须有一个QApplication对象。这个对象会提供访问全局信息的能力，包括程序的目录、屏幕大小、程序运行在哪个屏幕上（对于多线程系统来说）。这个对象还还会提供后续会说到的事件循环。<br>&emsp;&emsp;PyQt可以是是被一些自己的参数的，如 - geometry 和 - style 等，这些参数在QApplication的初始化文档中。</li>
+</ol>
+<p>&emsp;&emsp;调用app.exec_()会开始执行QApplication对象的事件循环，第一个事件就是绘制事件，调用QApplication.quit()方法会干净的结束该GUI程序，关闭所有已经打开的窗口，释放所占用的资源，然后退出程序。<br>&emsp;&emsp;事件循环用伪代码展示就是这个样子：<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">while True:</span><br><span class="line">    event = getNextEvent()</span><br><span class="line">    if event:</span><br><span class="line">        if event == Terminates:</span><br><span class="line">            break</span><br><span class="line">        processEvent(Event)</span><br></pre></td></tr></table></figure><br>&emsp;&emsp;当用户与应用程序交互的时候，或是发生特定事情时，会在PyQt内部产生一个事件并将其添加到事件列表中去。</p>
+<h4 id="PyQt5布局"><a href="#PyQt5布局" class="headerlink" title="PyQt5布局"></a>PyQt5布局</h4><h5 id="1-绝对定位"><a href="#1-绝对定位" class="headerlink" title="1. 绝对定位"></a>1. 绝对定位</h5><p>&emsp;&emsp;程序指定每个控件的位置和大小(以像素为单位)。<br>绝对定位有以下限制:<br>&emsp;- 如果我们调整窗口，控件的大小和位置不会改变<br>&emsp;- 在各种平台上应用程序看起来会不一样<br>&emsp;- 如果改变字体，我们的应用程序的布局就会改变<br>&emsp;- 如果我们决定改变我们的布局,我们必须完全重做我们的布局  </p>
+<h5 id="2-盒布局-Boxlayout"><a href="#2-盒布局-Boxlayout" class="headerlink" title="2. 盒布局 Boxlayout"></a>2. 盒布局 Boxlayout</h5><p>&emsp;&emsp;我们使用QHBoxLayout和QVBoxLayout，来分别创建横向布局和纵向布局<br>&emsp;&emsp;如果我们需要把两个按钮放在程序的右下角，创建这样的布局，我们只需要一个水平布局加一个垂直布局的盒子就可以了。再用弹性布局增加一点间隙。  </p>
+<h5 id="3-格栅布局"><a href="#3-格栅布局" class="headerlink" title="3. 格栅布局"></a>3. 格栅布局</h5><p>&emsp;&emsp;最常用的还是栅格布局了。这种布局是把窗口分为行和列。创建和使用栅格布局，需要使用QGridLayout模块。  </p>
+<h4 id="做了一个小型的demo"><a href="#做了一个小型的demo" class="headerlink" title="做了一个小型的demo"></a>做了一个小型的demo</h4><p>关于pyqt的更多知识，有空余时间的时候会继续补充。<br>项目地址： <a href="https://github.com/ice1995/ncmdump">ncmdump</a><br>项目介绍： 原作者写出了ncm转换为MP3的基础版本，用这不是很方便，就用正在学习的pyrt做了一个初版的demo图形化界面，后续有时间继续优化  </p>
+]]></content>
+      <categories>
+        <category>PyQT</category>
+      </categories>
+      <tags>
+        <tag>python</tag>
+        <tag>PyQT</tag>
+        <tag>GUI</tag>
+      </tags>
+  </entry>
   <entry>
     <title>PyQt学习记录（一） -- 初识PyQt</title>
     <url>/2018/09/11/using/python/framework/pyqt-1/</url>
@@ -2875,34 +2904,10 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
       <categories>
         <category>PyQt</category>
       </categories>
-      <tags>
-        <tag>python</tag>
-        <tag>PyQt</tag>
-        <tag>GUI</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>PyQT学习记录（二）</title>
-    <url>/2018/09/11/using/python/framework/pyqt-2/</url>
-    <content><![CDATA[<h4 id="PyQt5-程序基础解析"><a href="#PyQt5-程序基础解析" class="headerlink" title="PyQt5 程序基础解析"></a>PyQt5 程序基础解析</h4><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="keyword">import</span> sys</span><br><span class="line"><span class="keyword">import</span> time </span><br><span class="line"><span class="keyword">from</span> PyQt5.QtCore <span class="keyword">import</span> *</span><br><span class="line"><span class="keyword">from</span> PyQt5.QtGui <span class="keyword">import</span> * </span><br></pre></td></tr></table></figure>
-<ol>
-<li>导入sys模块，为了访问在sys.argv列cd cd 表中的那些命令行参数  </li>
-<li>导入time模块，使用time.sleep()  <figure class="highlight python"><table><tr><td class="code"><pre><span class="line">app = QApplication(sys.argv)</span><br></pre></td></tr></table></figure>
-&emsp;&emsp;每个PyQt GUI程序都必须有一个QApplication对象。这个对象会提供访问全局信息的能力，包括程序的目录、屏幕大小、程序运行在哪个屏幕上（对于多线程系统来说）。这个对象还还会提供后续会说到的事件循环。<br>&emsp;&emsp;PyQt可以是是被一些自己的参数的，如 - geometry 和 - style 等，这些参数在QApplication的初始化文档中。</li>
-</ol>
-<p>&emsp;&emsp;调用app.exec_()会开始执行QApplication对象的事件循环，第一个事件就是绘制事件，调用QApplication.quit()方法会干净的结束该GUI程序，关闭所有已经打开的窗口，释放所占用的资源，然后退出程序。<br>&emsp;&emsp;事件循环用伪代码展示就是这个样子：<br><figure class="highlight plaintext"><table><tr><td class="code"><pre><span class="line">while True:</span><br><span class="line">    event = getNextEvent()</span><br><span class="line">    if event:</span><br><span class="line">        if event == Terminates:</span><br><span class="line">            break</span><br><span class="line">        processEvent(Event)</span><br></pre></td></tr></table></figure><br>&emsp;&emsp;当用户与应用程序交互的时候，或是发生特定事情时，会在PyQt内部产生一个事件并将其添加到事件列表中去。</p>
-<h4 id="PyQt5布局"><a href="#PyQt5布局" class="headerlink" title="PyQt5布局"></a>PyQt5布局</h4><h5 id="1-绝对定位"><a href="#1-绝对定位" class="headerlink" title="1. 绝对定位"></a>1. 绝对定位</h5><p>&emsp;&emsp;程序指定每个控件的位置和大小(以像素为单位)。<br>绝对定位有以下限制:<br>&emsp;- 如果我们调整窗口，控件的大小和位置不会改变<br>&emsp;- 在各种平台上应用程序看起来会不一样<br>&emsp;- 如果改变字体，我们的应用程序的布局就会改变<br>&emsp;- 如果我们决定改变我们的布局,我们必须完全重做我们的布局  </p>
-<h5 id="2-盒布局-Boxlayout"><a href="#2-盒布局-Boxlayout" class="headerlink" title="2. 盒布局 Boxlayout"></a>2. 盒布局 Boxlayout</h5><p>&emsp;&emsp;我们使用QHBoxLayout和QVBoxLayout，来分别创建横向布局和纵向布局<br>&emsp;&emsp;如果我们需要把两个按钮放在程序的右下角，创建这样的布局，我们只需要一个水平布局加一个垂直布局的盒子就可以了。再用弹性布局增加一点间隙。  </p>
-<h5 id="3-格栅布局"><a href="#3-格栅布局" class="headerlink" title="3. 格栅布局"></a>3. 格栅布局</h5><p>&emsp;&emsp;最常用的还是栅格布局了。这种布局是把窗口分为行和列。创建和使用栅格布局，需要使用QGridLayout模块。  </p>
-<h4 id="做了一个小型的demo"><a href="#做了一个小型的demo" class="headerlink" title="做了一个小型的demo"></a>做了一个小型的demo</h4><p>关于pyqt的更多知识，有空余时间的时候会继续补充。<br>项目地址： <a href="https://github.com/ice1995/ncmdump">ncmdump</a><br>项目介绍： 原作者写出了ncm转换为MP3的基础版本，用这不是很方便，就用正在学习的pyrt做了一个初版的demo图形化界面，后续有时间继续优化  </p>
-]]></content>
-      <categories>
-        <category>PyQT</category>
-      </categories>
       <tags>
         <tag>python</tag>
         <tag>GUI</tag>
-        <tag>PyQT</tag>
+        <tag>PyQt</tag>
       </tags>
   </entry>
   <entry>
@@ -3004,6 +3009,36 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
         <tag>adt</tag>
       </tags>
   </entry>
+  <entry>
+    <title>sklearn学习（一）----广义线性模型</title>
+    <url>/2018/10/19/theory/algorithm/machinelearning/sklearn/sklearn-1/</url>
+    <content><![CDATA[<h3 id="学习环境"><a href="#学习环境" class="headerlink" title="学习环境"></a>学习环境</h3><p>Windows 10 + pycharm + anaconda3</p>
+<h3 id="广义线性模型"><a href="#广义线性模型" class="headerlink" title="广义线性模型"></a>广义线性模型</h3><p>&emsp;&emsp;目标值y是变量x的线性组合，$\hat{y}$是预测值</p>
+<script type="math/tex; mode=display">\hat{y}(\omega,x)=\omega_0+\omega_1x_1+...+\omega_px_p</script><p>&emsp;&emsp;定义向量 $\omega=(\omega<em>1,\omega_2,…,\omega_p)$作为conf</em>,定义 $\omega<em>0$作为intercept</em></p>
+<h3 id="普通最小二乘法"><a href="#普通最小二乘法" class="headerlink" title="普通最小二乘法"></a>普通最小二乘法</h3><p>&emsp;&emsp;（LinearRegression ）拟合一个带有系数 w = (w_1, …, w_p) 的线性模型，使得数据集实际观测数据和预测数据（估计值）之间的残差平方和最小。  </p>
+<script type="math/tex; mode=display">\min_{\omega}{||X_\omega-y||_2}^2\qquad也就是求
+\sum_{i=1}^{\omega}(X_i-y)^2的最小值</script><h4 id="算法复杂度："><a href="#算法复杂度：" class="headerlink" title="算法复杂度："></a>算法复杂度：</h4><p>该方法使用 X 的奇异值分解来计算最小二乘解。如果 X 是一个 size 为 (n, p) 的矩阵，设 n \geq p ，则该方法的复杂度为 O(n p^2).</p>
+<h3 id="岭回归"><a href="#岭回归" class="headerlink" title="岭回归"></a>岭回归</h3><p>&emsp;&emsp;岭（Ridge）回归，又称脊回归、吉洪诺夫正则化（Tikhonov regularization），是对不适定问题（ill-posed problem)进行回归分析时最经常使用的一种正则化方法。实际上是一种最小二乘法的改良，放弃了最小二乘法的无偏性，以损失部分信息、降低精度为代价获得更为符合实际和可靠的回归系数的回归方法，对于病态数据的拟合要强于最小二乘法。岭回归通过对系数的大小施加惩罚来解决 普通最小二乘法 的一些问题。 岭系数最小化的是带罚项的残差平方和。  </p>
+<script type="math/tex; mode=display">\min_\omega{||X_\omega-y||_2}^2+\alpha{||\omega||_2}^2</script><p>其中， $\alpha \geq 0$ 是控制系数收缩量的复杂性参数： $\alpha$ 的值越大，收缩量越大，这样系数对共线性的鲁棒性也更强。  </p>
+<h4 id="算法复杂度：-1"><a href="#算法复杂度：-1" class="headerlink" title="算法复杂度："></a>算法复杂度：</h4><p>该方法使用 X 的奇异值分解来计算最小二乘解。如果 X 是一个 size 为 (n, p) 的矩阵，设 n \geq p ，则该方法的复杂度为 O(n p^2).</p>
+<h4 id="设置正则化参数：广义交叉验证"><a href="#设置正则化参数：广义交叉验证" class="headerlink" title="设置正则化参数：广义交叉验证"></a>设置正则化参数：广义交叉验证</h4><p>&emsp;&emsp;RidgeCV 通过内置的 Alpha 参数的交叉验证来实现岭回归。 该对象与 GridSearchCV 的使用方法相同，只是它默认为 Generalized Cross-Validation(广义交叉验证 GCV)，这是一种有效的留一验证方法（LOO-CV）:</p>
+<h3 id="Lasso"><a href="#Lasso" class="headerlink" title="Lasso"></a>Lasso</h3><p>&emsp;&emsp;估计稀疏系数的线性模型。倾向于使用具有较少参数值的情况，有效地减少给定解决方案所依赖变量的数量。 因此，Lasso 及其变体是压缩感知领域的基础。 在一定条件下，它可以恢复一组非零权重的精确集.</p>
+<p>最小化的目标函数是：</p>
+<script type="math/tex; mode=display">\min_\omega\frac{1}{2n_{samples}}{||X_\omega-y||_2}^2+\alpha||\omega||_1</script><p>&emsp;&emsp;其中，$\alpha$ 是一个常数， $||w||_1$ 是参数向量的 $\ell_1-norm$ 范数。</p>
+<h3 id="参考文献"><a href="#参考文献" class="headerlink" title="参考文献"></a>参考文献</h3><ol>
+<li><a href="http://sklearn.apachecn.org/cn/0.19.0/modules/linear_model.html#ridge-regression">http://sklearn.apachecn.org/cn/0.19.0/modules/linear_model.html#ridge-regression</a></li>
+</ol>
+]]></content>
+      <categories>
+        <category>sklearn</category>
+      </categories>
+      <tags>
+        <tag>python</tag>
+        <tag>Machine Learning</tag>
+        <tag>Algorithm</tag>
+        <tag>sklearn</tag>
+      </tags>
+  </entry>
   <entry>
     <title>机器学习（一）---初识</title>
     <url>/2018/10/15/theory/algorithm/machinelearning/machinelearning-1/</url>
@@ -3028,8 +3063,8 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
       <tags>
         <tag>python</tag>
         <tag>Machine Learning</tag>
-        <tag>AI</tag>
         <tag>Algorithm</tag>
+        <tag>AI</tag>
       </tags>
   </entry>
   <entry>
@@ -3094,41 +3129,11 @@ hadoop3节点进程状态：<figure class="highlight bash"><table><tr><td class=
       <categories>
         <category>Machine Learning</category>
       </categories>
-      <tags>
-        <tag>python</tag>
-        <tag>Machine Learning</tag>
-        <tag>AI</tag>
-        <tag>Algorithm</tag>
-      </tags>
-  </entry>
-  <entry>
-    <title>sklearn学习（一）----广义线性模型</title>
-    <url>/2018/10/19/theory/algorithm/machinelearning/sklearn/sklearn-1/</url>
-    <content><![CDATA[<h3 id="学习环境"><a href="#学习环境" class="headerlink" title="学习环境"></a>学习环境</h3><p>Windows 10 + pycharm + anaconda3</p>
-<h3 id="广义线性模型"><a href="#广义线性模型" class="headerlink" title="广义线性模型"></a>广义线性模型</h3><p>&emsp;&emsp;目标值y是变量x的线性组合，$\hat{y}$是预测值</p>
-<script type="math/tex; mode=display">\hat{y}(\omega,x)=\omega_0+\omega_1x_1+...+\omega_px_p</script><p>&emsp;&emsp;定义向量 $\omega=(\omega<em>1,\omega_2,…,\omega_p)$作为conf</em>,定义 $\omega<em>0$作为intercept</em></p>
-<h3 id="普通最小二乘法"><a href="#普通最小二乘法" class="headerlink" title="普通最小二乘法"></a>普通最小二乘法</h3><p>&emsp;&emsp;（LinearRegression ）拟合一个带有系数 w = (w_1, …, w_p) 的线性模型，使得数据集实际观测数据和预测数据（估计值）之间的残差平方和最小。  </p>
-<script type="math/tex; mode=display">\min_{\omega}{||X_\omega-y||_2}^2\qquad也就是求
-\sum_{i=1}^{\omega}(X_i-y)^2的最小值</script><h4 id="算法复杂度："><a href="#算法复杂度：" class="headerlink" title="算法复杂度："></a>算法复杂度：</h4><p>该方法使用 X 的奇异值分解来计算最小二乘解。如果 X 是一个 size 为 (n, p) 的矩阵，设 n \geq p ，则该方法的复杂度为 O(n p^2).</p>
-<h3 id="岭回归"><a href="#岭回归" class="headerlink" title="岭回归"></a>岭回归</h3><p>&emsp;&emsp;岭（Ridge）回归，又称脊回归、吉洪诺夫正则化（Tikhonov regularization），是对不适定问题（ill-posed problem)进行回归分析时最经常使用的一种正则化方法。实际上是一种最小二乘法的改良，放弃了最小二乘法的无偏性，以损失部分信息、降低精度为代价获得更为符合实际和可靠的回归系数的回归方法，对于病态数据的拟合要强于最小二乘法。岭回归通过对系数的大小施加惩罚来解决 普通最小二乘法 的一些问题。 岭系数最小化的是带罚项的残差平方和。  </p>
-<script type="math/tex; mode=display">\min_\omega{||X_\omega-y||_2}^2+\alpha{||\omega||_2}^2</script><p>其中， $\alpha \geq 0$ 是控制系数收缩量的复杂性参数： $\alpha$ 的值越大，收缩量越大，这样系数对共线性的鲁棒性也更强。  </p>
-<h4 id="算法复杂度：-1"><a href="#算法复杂度：-1" class="headerlink" title="算法复杂度："></a>算法复杂度：</h4><p>该方法使用 X 的奇异值分解来计算最小二乘解。如果 X 是一个 size 为 (n, p) 的矩阵，设 n \geq p ，则该方法的复杂度为 O(n p^2).</p>
-<h4 id="设置正则化参数：广义交叉验证"><a href="#设置正则化参数：广义交叉验证" class="headerlink" title="设置正则化参数：广义交叉验证"></a>设置正则化参数：广义交叉验证</h4><p>&emsp;&emsp;RidgeCV 通过内置的 Alpha 参数的交叉验证来实现岭回归。 该对象与 GridSearchCV 的使用方法相同，只是它默认为 Generalized Cross-Validation(广义交叉验证 GCV)，这是一种有效的留一验证方法（LOO-CV）:</p>
-<h3 id="Lasso"><a href="#Lasso" class="headerlink" title="Lasso"></a>Lasso</h3><p>&emsp;&emsp;估计稀疏系数的线性模型。倾向于使用具有较少参数值的情况，有效地减少给定解决方案所依赖变量的数量。 因此，Lasso 及其变体是压缩感知领域的基础。 在一定条件下，它可以恢复一组非零权重的精确集.</p>
-<p>最小化的目标函数是：</p>
-<script type="math/tex; mode=display">\min_\omega\frac{1}{2n_{samples}}{||X_\omega-y||_2}^2+\alpha||\omega||_1</script><p>&emsp;&emsp;其中，$\alpha$ 是一个常数， $||w||_1$ 是参数向量的 $\ell_1-norm$ 范数。</p>
-<h3 id="参考文献"><a href="#参考文献" class="headerlink" title="参考文献"></a>参考文献</h3><ol>
-<li><a href="http://sklearn.apachecn.org/cn/0.19.0/modules/linear_model.html#ridge-regression">http://sklearn.apachecn.org/cn/0.19.0/modules/linear_model.html#ridge-regression</a></li>
-</ol>
-]]></content>
-      <categories>
-        <category>sklearn</category>
-      </categories>
       <tags>
         <tag>python</tag>
         <tag>Machine Learning</tag>
         <tag>Algorithm</tag>
-        <tag>sklearn</tag>
+        <tag>AI</tag>
       </tags>
   </entry>
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-                <span itemprop="name">PyQT学习记录（二）</span>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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index 1d837ce6..1a1b412b 100644
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git "a/tags/\345\220\203\345\226\235\347\216\251\344\271\220/index.html" "b/tags/\345\220\203\345\226\235\347\216\251\344\271\220/index.html"
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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diff --git "a/tags/\350\257\273\344\271\246\347\254\224\350\256\260/index.html" "b/tags/\350\257\273\344\271\246\347\254\224\350\256\260/index.html"
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+	<a target="_blank" href="http://beian.miit.gov.cn">鲁ICP备18038198号-2</a>&nbsp;&nbsp;	<a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=37072402371021" style="display:inline-block;text-decoration:none;height:20px;line-height:20px;text-decoration:none"><img src="https://www.zhangbohan.com.cn/images/beian.png" style="float:left;"/>鲁公网安备 37072402371021号</a>
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