How to renew Master node Certificate in OpenShift 4

Solution Verified - Updated -

Issue

  • Node certificate is expired on Master nodes.
  • Normal users get Unable to connect to the server: EOF while oc login.
  • Login to system:admin user reports an errorerror: You must be logged in to the server (Unauthorized).

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4
  • Red Hat Single Node OpenShift (SNO)
    • 4

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