Kubernetes Cluster in AWS (3 master and 2 worker node)

Setting Up Kubernetes cluster in AWS (with help of kops)

1.Create Ubuntu EC2 instance (befor this create vpc with your range of CIDR and then IAM role Route53, EC2, IAM and S3 full access)

2.install AWSCLI

 curl https://s3.amazonaws.com/aws-cli/awscli-bundle.zip -o awscli-bundle.zip
 apt install unzip python
 unzip awscli-bundle.zip
 #sudo apt-get install unzip - if you dont have unzip in your system
 ./awscli-bundle/install -i /usr/local/aws -b /usr/local/bin/aws


3.Install kubectl

curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl
 chmod +x ./kubectl
 sudo mv ./kubectl /usr/local/bin/kubectl

4. aws configure  (only give region)

5.Install kops on ubuntu instance:

 curl -LO https://github.com/kubernetes/kops/releases/download/$(curl -s https://api.github.com/repos/kubernetes/kops/releases/latest | grep tag_name | cut -d '"' -f 4)/kops-linux-amd64
 chmod +x kops-linux-amd64
 sudo mv kops-linux-amd64 /usr/local/bin/kops

6.Create a Route53 private hosted zone (you can create Public hosted zone if you have a domain)

7.create an S3 bucket

 aws s3 mb s3://k8sbuckettest

8.Expose environment variable:

export KOPS_STATE_STORE=s3://k8sbuckettest

9.Create sshkeys before creating cluster

 ssh-keygen

/root/.ssh/id_rsa.pub.


10.Create kubernetes cluster definitions on S3 bucket

kops create cluster --cloud=aws --zones=us-east-2c --name=k8s.trojantest.be --dns-zone=trojantest.be --dns public --master-size=t2.micro --master-count=3 --node-size=t2.micro --node-count=2

11.Create kubernetes cluser

  kops update cluster --name k8s.trojantest.be --yes

12. Validate your cluster
    kops validate cluster

13. To list nodes
    kubectl get nodes

angular.yaml:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: angular-deployment
  labels:
    app: angular
spec:
  replicas: 3
  selector:
    matchLabels:
      app: angular
  template:
    metadata:
      labels:
        app: angular
    spec:
      containers:
      - name: angular
        image: sacoefrancis/angular:v4
        ports:
        - containerPort: 80

command to run it:

kubectl create -f angular.yaml


angular-service.yaml:

apiVersion: v1
kind: Service
metadata:
  name: angular-service
spec:
  selector:
    app: angular
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80
  type: LoadBalancer



springboot.yaml:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: springboot-deployment
  labels:
    app: springboot
spec:
  replicas: 2
  selector:
    matchLabels:
      app: springboot
  template:
    metadata:
      labels:
        app: springboot
    spec:
      containers:
      - name: springboot
        image: sacoefrancis/springboot:v4
        ports:
        - containerPort: 8080


springboot-service.yaml:

apiVersion: v1
kind: Service
metadata:
  name: spring-service
spec:
  selector:
    app: springboot
  ports:
    - protocol: TCP
      port: 8080
      targetPort: aa1ef1767cb9646c5bcf367329b21a7a-1651502420.us-east-2.elb.amazonaws.com
  type: LoadBalancer


commands:

ssh -i ~/.ssh/id_rsa admin@api.k8s.trojantest.be


kubectl get pods

kubectl get  namespaces

kubectl get pods --all-namespaces

kubectl create -f nginx.yaml  (running app)

kubectl get pods -o wide

kubectl delete pod nginx-deployment-54f57cf6bf-crvvp


kubectl get pods  (gives only services runing)


kubectl delete deployment nginx-deployment

kubectl delete service loadbalancer

kubectl get svc

kops delete cluster k8s.trojantest.be --yes