Kubernetes internal certificates have expired

Issue

• Errors within cluster relating to expired Kubernetes internal certificates, i.e.

  E0830 12:45:48.789064 34964 proxy_server.go:147] Error while proxying request: x509: certificate has expired or is not yet valid: current time 2023-08-30T12:45:48+03:00 is after 2023-08-15T14:55:09Z
  

Environment

• Element On-Premise Installer

Resolution

1. Run sudo microk8s.refresh-certs -c to check for expired certs.
2. Run sudo microk8s.refresh-certs to renew the expired certs.

Root Cause

Most likely caused by an open issue with microk8s regarding auto-renewing of certificates, see Issue 2489.