Renew kubernetes pki after expired

Question

My kubernetes PKI expired (API server to be exact) and I can\'t find a way to renew it. The error I get is

May 27 08:43:51 node1 kubelet[8751]: I0527 08:43:5         


        

Answer 1

To help anyone else with Multi-Master setup as I was searching for the answer after the first master has been updated on the second master I did this I found this from another question:

kubeadm only upgrades if the cluster upgrade was done with certificate-renewal=true. So I manually had to delete the /etc/kubernetes/kubelet.conf and regenerated it with kubeadm init phase kubeconfig kubelet which finally fixed my problem.