Node becoming NotReady frequently with openshift IPI on vsphere

Solution In Progress - Updated -

Issue

  • Install RHOCP 4.5 or 4.6 cluster and let it run for > 24hrs.
  • RHOCP 4.4 or 4.6 depending on the version installed the node become not ready and very frequently.
  • The same issue can be seen while upgrading the cluster from rhocp 4.5 to rhocp 4.6.

Environment

  • Red Hat OpenShift Container Platform
    • 4.5 and 4.6

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