How to remove NotReady nodes from kubernetes cluster automatically

5
votes

I'm running the kuberenets cluster on bare metal servers and my cluster nodes keep added and removed regularly. But when a node is removed, kubernetes does not remove it automatically from nodes list and kubectl get nodes keep showing NotReady nodes. Is there any automated way to achieve this? I want similar behavior for nodes as kubernetes does for pods.

2
kubernetes
I believe that the cluster-autoscaler does that, so you might try running it or look around in the source and see how to make your own controller which does the same thing – mdaniel
which pod network add-on are you using? – Anshul Jindal

2 Answers

2
votes

to remove a node follow the below steps

Run on Master
# kubectl cordon <node-name>
# kubectl drain <node-name> --force --ignore-daemonsets  --delete-emptydir-data
# kubectl delete node <node-name>
0
votes

You can use this little bash command, or set it as a cron-job.

kubectl delete node $(kubectl get nodes | grep NotReady | awk '{print $1;}')