How to make control plane nodes schedulable in OpenShift 4

Solution Verified - Updated -

Issue

  • How to make master/control plane nodes schedulable at OpenShift 4 cluster installation.
  • How to install OCP 4 clusters with only 3 master nodes and no worker nodes.
  • Are three-node compact clusters supported in OpenShift 4?

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4
  • Control Plane Schedulable

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