Avoiding unnecessary wildcard DNS A-records for your OpenShift 4 cluster

Solution Verified - Updated -

Issue

  • Why shouldn't I create an A-record for *.<mycluster>.<mydomain>?
  • What are the required DNS entries I need for a minimum viable openshift 4.x cluster?
  • What DNS entries should I NOT make to avoid problems for OpenShift 4.x?

Environment

  • OpenShift 4
  • All platforms

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