扫描指定网段子掩码结果不同

[helloyw]

./k8spider all -c 10.100.207.16/24 使用命令对/24进行扫描可以探测到service

root@ubuntu-pod:/# ./k8spider all  -c 10.100.207.16/24
INFO[0000] kubernetes.default.svc.cluster.local found in dns(<default-dns>)! response: [10.96.0.1] 
WARN[0000] wildcard dns query to any.any.svc.cluster.local. failed: lookup any.any.svc.cluster.local. on 10.96.0.10:53: no such host 
WARN[0000] wildcard dns query to any.any.any.svc.cluster.local. failed: lookup any.any.any.svc.cluster.local. on 10.96.0.10:53: no such host 
ERRO[0000] Transfer failed: dns: bad xfr rcode: 5       
INFO[0000] PTRrecord 10.100.207.16 --> argo-server.argo.svc.cluster.local. 
{"Ip":"10.100.207.16","SvcDomain":"argo-server.argo.svc.cluster.local.","SrvRecords":null}
INFO[0002] Extract Namespaces:                          
INFO[0002] Namespace: argo                              
INFO[0002] Extract Service:                             
INFO[0002] Service: argo-server.argo.svc.cluster.local. 

./k8spider all -c 10.100.207.16/16 这样就扫不到了

root@ubuntu-pod:/# ./k8spider all  -c 10.100.207.16/16
INFO[0000] kubernetes.default.svc.cluster.local found in dns(<default-dns>)! response: [10.96.0.1] 
WARN[0000] wildcard dns query to any.any.svc.cluster.local. failed: lookup any.any.svc.cluster.local. on 10.96.0.10:53: no such host 
WARN[0000] wildcard dns query to any.any.any.svc.cluster.local. failed: lookup any.any.any.svc.cluster.local. on 10.96.0.10:53: no such host 
ERRO[0000] Transfer failed: dns: bad xfr rcode: 5       
WARN[0002] ScanSubnet Found Nothing                     
INFO[0002] Extract Namespaces:                          
INFO[0002] Extract Service:   

[helloyw]

我调整了线程-t 10也探测不到

root@ubuntu-pod:/# ./k8spider all  -c 10.100.207.16/16 -t 10
INFO[0000] kubernetes.default.svc.cluster.local found in dns(<default-dns>)! response: [10.96.0.1] 
WARN[0000] wildcard dns query to any.any.svc.cluster.local. failed: lookup any.any.svc.cluster.local. on 10.96.0.10:53: no such host 
WARN[0000] wildcard dns query to any.any.any.svc.cluster.local. failed: lookup any.any.any.svc.cluster.local. on 10.96.0.10:53: no such host 
ERRO[0000] Transfer failed: dns: bad xfr rcode: 5       
INFO[0002] Extract Namespaces:                          
INFO[0002] Extract Service:    

[Esonhugh]

-vv 试试呢？
这个问题很奇怪 目前没有环境帮我复现

[Esonhugh]

但是目前我有一个小小的猜测 可能是因为 dns 服务接受了过多请求/可能 dns 服务挂起
ctx, _ := context.WithTimeout(context.Background(), time.Duration(DnsTimeout)*time.Second) // I don't think if a inside cluster dns query has more than 2s latency.
并且我默认配置了两秒延迟 可以尝试配置 --dns-timeout=10 来配置十秒延迟来再次测试这个问题

[helloyw]

但是目前我有一个小小的猜测 可能是因为 dns 服务接受了过多请求/可能 dns 服务挂起 ctx, _ := context.WithTimeout(context.Background(), time.Duration(DnsTimeout)*time.Second) // I don't think if a inside cluster dns query has more than 2s latency. 并且我默认配置了两秒延迟 可以尝试配置 --dns-timeout=10 来配置十秒延迟来再次测试这个问题

还是识别不到，我的环境是通过minikube搭建的k8s环境进行的测试

root@ubuntu-pod:/# ./k8spider all -c 10.100.207.16/16 --dns-timeout=30
INFO[0000] kubernetes.default.svc.cluster.local found in dns(<default-dns>)! response: [10.96.0.1] 
WARN[0000] wildcard dns query to any.any.svc.cluster.local. failed: lookup any.any.svc.cluster.local. on 10.96.0.10:53: no such host 
WARN[0000] wildcard dns query to any.any.any.svc.cluster.local. failed: lookup any.any.any.svc.cluster.local. on 10.96.0.10:53: no such host 
ERRO[0000] Transfer failed: dns: bad xfr rcode: 5       
WARN[0002] ScanSubnet Found Nothing                     
INFO[0002] Extract Namespaces:                          
INFO[0002] Extract Service:        

[helloyw]

同样还有一个问题，除了上面提到的10.100.207.16/24

我针对ARGOCD_SERVER_SERVICE_HOST=10.109.104.211，指定子腌码为24也探测不到，但是通过dig命令可以(dig +short -x 10.109.104.211)
./k8spider all -c 10.109.104.211/24 --dns-timeout=30