Epic Goal

• Review and support the SDN team work on the openshift installer piece to migrate keepalived from current multicast configuration to unicast

Why is this important?

• This change was made already for bare metal deployments and customers are asking the same for vSphere
• OCP IPI on vSphere IPI configures keepalived in multicast mode, which can lead to VRRP ID clashes if multiple clusters with similar cluster name are deployed on the same L2 network

Scenarios

1. OCP IPI on vSphere IPI configures keepalived in unicast mode by default

Acceptance Criteria

• CI - MUST be running successfully with tests automated
• Release Technical Enablement - Provide necessary release enablement details and documents.

Previous Work:

Add support for Keepalived mode update:
https://github.com/openshift/baremetal-runtimecfg/pull/75

[vsphere][spike] Will unicast keepalived work?

https://issues.redhat.com/browse/SPLAT-149

https://github.com/openshift/baremetal-runtimecfg/blob/8d4eecc8b3748a19506a6ad59ef551afcacfa6f5/pkg/config/node.go#L73

Done Checklist

• CI - CI is running, tests are automated and merged.
• Release Enablement <link to Feature Enablement Presentation>
• DEV - Upstream code and tests merged: <link to meaningful PR or GitHub Issue>
• DEV - Upstream documentation merged: <link to meaningful PR or GitHub Issue>
• DEV - Downstream build attached to advisory: <link to errata>
• QE - Test plans in Polarion: <link or reference to Polarion>
• QE - Automated tests merged: <link or reference to automated tests>
• DOC - Downstream documentation merged: <link to meaningful PR>