extra-credit-kuber-award.md

Kuber Award

Summary

Kubernetes cluster deployment: A Kubernetes cluster with 3 worker nodes and 1 master node was launched in AWS using kops The kops command to create the cluster:

Steps to create the cluster

1. Install AWS CLI

   https://docs.aws.amazon.com/cli/latest/userguide/install-cliv2.html

2. Configure AWS CLI

   Create an IAM user with admin privileges and save the credentials for that user in the ~/.aws/credentials file https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html

3. Install kops

   https://github.com/kubernetes/kops#installing

4. Install kubectl

   https://kubernetes.io/docs/tasks/tools/install-kubectl/

5. Generate ssh keys

   Generate a private and public SSH keypair with the following command, accept all the defaults:

   ssh-keygen

6. Create S3 bucket

   Create a bucket in S3. kops will use this bucket to store the kubernetes cluster state

7. Launch the cluster With all the prerequisites met, launch the Kubernetes cluster with the following command, replacing the variables with a cluster name and s3 bucket name respectively:

   kops create cluster
   --name=$CLUSTER_NAME.k8s.local
   --state=$KOPS_STATE_STORE
   --api-loadbalancer-type=public
   --associate-public-ip=false
   --cloud=aws
   --master-count=1
   --master-size=t2.medium
   --master-zones=us-east-1a
   --networking=calico
   --node-count=3
   --node-size=t2.micro
   --topology=private
   --zones=us-east-1a,us-east-1b,us-east-1c

Steps to deploy application to the Kubernetes cluster

1. Create a YAML manifest file for your application

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: announcements-deployment
  labels:
    app: announcements
spec:
  replicas: 3
  selector:
    matchLabels:
      app: announcements
  template:
    metadata:
      labels:
        app: announcements
    spec:
      containers:
      - name: announcements-api
        image: itselavia/announcements:VERSION
        imagePullPolicy: Always
        ports:
        - containerPort: 8080

2. Add a Kubernetes Service in the manifest file to expose your application

---

apiVersion: v1
kind: Service
metadata:
  name: announcements-service
spec:
  selector:
    app: announcements
  ports:
    - port: 80
      targetPort: 8080
  type: LoadBalancer

2. Use kubectl to deploy the manifest file

   kubectl apply -f Manifest.yaml Check the deployed pods: kubectl get pods Check the endpoint for the service: kubectl get services