How to fix cert-manager operator upgrade issues and expired GitLab certificates in OpenShift 4.14
Issue
The cert-manager operator upgrade from version 1.14.1 to 1.15 fails with the following issues:
- API server degradation every 20 minutes
- High ETCD load (1.5GB per member)
- Multiple expired GitLab certificates
- GitLab blocking cert-manager operator installation
Environment
- Red Hat OpenShift Cluster Platform (RHOCP)
- 4.14.33
- Cert Manager
- 1.14.1 to 1.15
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