Managing an EKS Cluster from an EC2 Node

Install kubectl on EC2

Download the binary, move it to /usr/local/bin, make it executable, then run a basic command to confirm the binary is reachable.

# Download kubectl
curl -o kubectl https://amazon-eks.s3.us-west-2.amazonaws.com/1.20.4/2021-04-12/bin/linux/amd64/kubectl
# Move to /usr/local/bin
sudo mv ./kubectl /usr/local/bin
# Add executable permission
chmod +x /usr/local/bin/kubectl

# Verify installation (expected error before kubeconfig is set)
kubectl get nodes
The connection to the server localhost:8080 was refused - did you specify the right host or port?

Installation reference: https://docs.aws.amazon.com/zh_cn/eks/latest/userguide/install-kubectl.html

Configure EC2 node for a managed EKS cluster

Update the kubeconfig for the target cluster and verify that the node list can be retrieved.

# Set cluster information
aws eks --region ap-south-1 update-kubeconfig --name obg-eks-develop
Added new context arn:aws:eks:ap-south-1:384776417503:cluster/obg-eks-develop to /home/ec2-user/.kube/config

# Verify configuration
kubectl get nodes
NAME                                            STATUS   ROLES   AGE   VERSION
ip-10-48-34-209.ap-south-1.compute.internal    Ready    <none>   85m   v1.18.9-eks-d1db3c

System architecture reference: https://blog.csdn.net/weixin_41010198/article/details/109166131