Right now, the API is a NodePort that is backed by an Octavia Load balancer (managed by CCM) and we expose that IP in the HostedCluster.Spec.ControlPlaneEndpoint.

Other platforms don't expose the IP but their FQDN, e.g.

  controlPlaneEndpoint:
    host: api-example-q4s4h.service.hypershift.azure.devcluster.openshift.com
    port: 443 

Ideally we would like to do the same with OpenStack.

Because we run on-prem and that DNS is decentralized from the platform, this would very likely mean that the user would provide the desired IP address for the API endpoint. Exactly like we do in the installer.

Or we rely on the management cluster Ingress like: 

api.<hosted-cluster-name>.apps.mgmt-cluster.example.com