How I used KOPS To Setup a K8S Cluster in AWS

Step 1:

Create an Ubuntu EC2 instance in AWS

Step2:

2. Install AWSCLI

   #Using snaps to install aws cli

   sudo snap install aws-cli --classic

   #To verify the installation

   aws --version

Manual Installation Using the AWS CLI Bundle

curl "https://s3.amazonaws.com/aws-cli/awscli-bundle.zip" -o "awscli-bundle.zip"

#after downloading the aws cli bundle , unzip the bundle unzip

awscli-bundle.zip

#Run the installer with the correct python path

sudo ./awscli-bundle/install -i /usr/local/aws -b /usr/local/bin/aws #Verify the installer aws --version

3. Install kops on ubuntu instance:

   #Install wget if not installed

   sudo apt install wget -y

   sudo wget https://github.com/kubernetes/kops/releases/download/v1.16.1/kops-linux-amd64

   sudo chmod +x kops-linux-amd64

   sudo mv kops-linux-amd64 /usr/local/bin/kops

   #check the version

   kops version

   #To check the installation path

   which kops #output is like this: /usr/local/bin/kop

4. Install kubectl

sudo curl -LO [storage.googleapis.com/kubernetes-release/r.. -s https://storage.googleapis.com/kubernetesrelease/release/stable.txt)/bin/linux/amd64/kubectl/bin/linux/amd64/kubectl)

sudo chmod +x ./kubectl

sudo mv ./kubectl /usr/local/bin/kubectl

To check the version

kubectl version --client

5. Create an IAM role from Console or CLI with below Policies.

AmazonEC2FullAccess

AmazonRoute53FullAccess

AmazonS3FullAccess

IAMFullAccess

AmazonVPCFullAccess

AmazonSQSFullAccess

AmazonEventBridgeFullAccess

6. create an S3 bucket Execute below command in KOPS Server use unique bucket name if you get bucket name exists error.

   aws s3 mb s3://

   ex:

   S3 bucket name should be unique across AWS

   aws s3 mb s3://kops2024.k8s.local

   Expose environment variable:

   Add env variables in bashrc

   vi .bashrc #Add the export command at the end of the file

   Give Unique Name And S3 Bucket which you created.

   export NAME=kops2024.k8s.local export

   KOPS_STATE_STORE=s3://kops2024.k8s.local

   source .bashrc

7. Create sshkeys before creating cluster

   ssh-keygen

8. Create Kubernetes cluster definitions on S3 bucket

   kops create cluster --zones=us-east-1 --networking weave --master-size t2.medium --master-count 1 --node-size t2.micro --node-count=2 --name=${NAME} --state=${KOPS_STATE_STORE}

   kops create secret --name=${NAME} sshpublickey admin -i /home/ubuntu/.ssh/id_ed255....pub

9. Create Kubernetes cluster

   kops update cluster ${NAME} --yes

   OR

   kops create cluster
   --name=${NAME}
   --cloud=aws
   --zones=us-east-1a

10. To customize cluster configuration

    kops edit cluster --name ${NAME}

11. Validate your cluster(KOPS will take some time to create cluster ,Execute below command after few minutes 3-5 minutes)

    kops validate cluster

12. To list nodes

    kubectl get nodes

13. To Delete Cluster

kops delete cluster --name=${NAME} --state=${KOPS_STATE_STORE} --yes

Note: Operating a Kubernetes cluster on AWS incurs costs, so it’s advisable to delete your cluster once you’ve completed your experiments to avoid unnecessary expenses.