# Kubernetes internal certificates have expired

## Issue
- Errors within cluster relating to expired Kubernetes internal certificates, i.e.
  ```yml
  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
Run the following commands to refresh your internal certificates:
1. `sudo microk8s.refresh-certs -e server.crt`
2. `sudo microk8s.refresh-certs -e front-proxy-client.crt`
3. `sudo snap restart microk8s`

## Root Cause
Most likely caused by an open issue with microk8s regarding auto-renewing of certificates, see <a href="https://github.com/canonical/microk8s/issues/2489" target="_blank" rel="noopener noreferrer">Issue 2489</a>.