Recover ETCD quorum guard pod after a failing OpenShift 4 update

Solution Verified - Updated -

Issue

  • The "master" MachineConfigPool is stuck in "Updating" phase
  • All ETCD cluster members are up and running, but one of the ETCD quorum guard pods does not pass the health check

Environment

  • Red Hat OpenShift Container Platform (OCP)
    • 4.6 and newer

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