CoreDNS: How to add custom A records in OpenShift 4

Solution Verified - Updated -

Issue

  • create a custom CoreDNS to host custom DNS entries
  • adding the new CoreDNS server as a nameserver for Openshift-DNS operator

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4.12, 4.13, 4.14
  • CoreDNS Operator

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