How to fix cert-manager operator upgrade issues and expired GitLab certificates in OpenShift 4.14

Solution Verified - Updated -

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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