Related to OSPRH-8586.

OSPRH-8586 covers RHOSO18+BGP+octavia with ovn provider LBs.

This ticket covers RHOSO18+BGP+octavia with amphora LBs.

Currently this task is blocked because:

• amphora needs OCP nodes acting as OVN gateways for their management network
• With BGP, OCP nodes should not be used as OVN GWs because, for example, SNAT traffic would not work (IP addresses from the scheduled cr-lrps would not be exposed via BGP)

There are three options to unblock this task:

1. Using AZs

It seems this is working fine in unialpha job and the OCP nodes act as OVN GWs but only ports from the amphora management network are exposed from them.

Info from relevant unialpha config:

dataplane

https://github.com/openstack-k8s-operators/architecture/blob/main/examples/dt/uni01alpha/networker/nodeset/values.yaml

        edpm_ovn_availability_zones:
          - zone-2

controlplane

https://github.com/openstack-k8s-operators/architecture/blob/main/examples/dt/uni01alpha/control-plane/service-values.yaml

  octavia:
    enabled: true
    amphoraImageContainerImage: quay.io/gthiemonge/octavia-amphora-image
    apacheContainerImage: registry.redhat.io/ubi9/httpd-24:latest
    availabilityZones:
      - zone-1
...
  ovn:
    ovnController:
      nicMappings:
        datacentre: ocpbr
        octavia: octbr
        ironic: ironic
      availability-zones:
        - zone-1
...
  neutron:
    customServiceConfig: |
      [DEFAULT]
...
      default_availability_zones = zone-1,zone-2

2. Remove the limitation in octavia: OSPRH-10766

3. Remove the limitation in BGP: OSPRH-661