[RHOCP 4] Switching from `Shared Gateway` to` Local Gateway` mode in OVN-Kubernetes

Solution Verified - Updated -

Issue

  • How to switch from Shared Gateway mode to Local Gateway mode in OVN-Kubernetes?
  • After upgrading the cluster to RHOCP v4.8, application pod traffic breaks and cannot reach outside the cluster when a secondary physical interface is used with Shared Gateway mode in OVN-Kubernetes.

Environment

  • Red Hat OpenShift Container Platform(RHOCP)
    • 4.8

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