ControlPlaneMachineSet (CPMS) operator degraded in UPI Cluster

Solution Verified - Updated -

Issue

  • Control-Plane-Machine-Set reporting Missing 3 available replica(s) with cluster operator as degraded

    $oc get co | grep "control-plane-machine-set" 
control-plane-machine-set                  4.13.0-rc.7   False       False         True       28m     Missing 3 available replica(s)

Environment

  • Red Hat OpenShift Container Platform (RHOCP) 4.x
  • Openshift on Microsoft Azure
  • Openshift on AWS
  • Openshift on vSphere

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