How to renew Master node Certificate in OpenShift 4.x

Solution Verified - Updated -

Issue

  • Node certificate is expired on Master nodes.
  • Normal users get Unable to connect to the server: EOF while oc login.
  • If we switch to system:admin user then we get an error`error: You must be logged in to the server (Unauthorized)'.

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4.x

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