Default scheduler changed from SelectorSpread to PodTopologySpread in OpenShift 4.7

Solution Verified - Updated -

Issue

  • Default scheduler changed from SelectorSpread to PodTopologySpread in OpenShift 4.7
  • Pod replicas scheduled to the same node and didn't spread

Environment

  • Red Hat OpenShift Container Platform
    • 4.7, 4.8, 4.9
  • No topology.kubernetes.io/zone label defined in nodes

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