Renew SSL certificate certificates on ES nodes

Hi everyone
I am currently using Elastic. Search deployed on kubernetes And I have to renew Sel certificate certificates. I recently saw Get Hub that if I delete secrets they are renewed automatically But I am not able to do it with the ES data,master and ingest nodes.
The node specific certificatenis auto renewed but CA is not renewed. Any idea how to proceed.
Looking for urgent help as it is the production environment and it is expiring in few days