Is it supported to scale up control plane / etcd node replicas in OpenShift 4?

Solution Verified - Updated -

Issue

  • Is it possible to scale master / etcd nodes to more than 3 in OpenShift 4?
  • How to configure more than 3 master nodes in OCP 4

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4
  • Bare metal
  • Control plane nodes
  • etcd

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