renew-k8s-cert

This script renews certs for kubernetes that expires anually. This script will work for all the cluster that is hosted in the HA, multi-master cluster, single master cluster.

requirement

• script is assuming containerd as CRI. So circtl command is used to stop the services. Find what CRI is used [container runtime interfaces] in your cluster, to export for containerd. eg: -> export CONTAINER_RUNTIME_ENDPOINT=unix:///var/run/containerd/containerd.sock

Steps

• clone the script to respective servers.
• run the script
  • cd renew-k8s-cert
  • chmod +x renew.sh
  • bash renew.sh