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

This will update all certs under /etc/kubernetes/ssl

kubeadm alpha certs renew all --config=/etc/kubernetes/kubeadm-config.yaml

and do this to restart server commpenont:

kill -s SIGHUP $(pidof kube-apiserver)
kill -s SIGHUP $(pidof kube-controller-manager)
kill -s SIGHUP $(pidof kube-scheduler)