How to Remove and add a Node from a K8S cluster.

First login to the Control-plane node where you can list the nodes.

1) Drain the node (Remove from cluster)

# kubectl drain <node name>

You might have to ignore daemonsets and local-data in the machine

# kubectl drain --ignore-daemonsets --delete-local-data

2) Now delete the node

# kubectl delete node <node name>

Now if you want to add the node again, you might want to re-generate the token of kubeadm join command for adding the worker.

Always use the --v=5 along with the kubeadm join command which will show the error description.

# kubeadm token create

Now use this token for the kubeadm join command , so that you can join the worker node.

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