"vrrp_instance" sections are missing in keepalived.conf after upgrade to OCP 4.12

Solution In Progress - Updated -

Issue

  • On a Red Hat OpenShift Container Platform (RHOCP) cluster, after upgrading to version 4.12, the file /etc/keepalived/keepalived.conf inside the pod keepalived-$MASTER_NODE of namespace openshift-vsphere-infra is missing the vrrp_instance sections.
  • Container keepalived of pod keepalived-$MASTER_NODE of namespace openshift-vsphere-infra is constantly restarting with error: Warning - keepalived has no configuration to run.

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4.12
  • IPI installation
  • vSphere platform

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