How to set AZ(availability zone) for control plane nodes using cluster-api-provider-openstack?

[hyeyoung-leee]

Hi,

I set the environment variable OPENSTACK_FAILURE_DOMAIN before creating the cluster.
As expected, the worker nodes used the specified value and were scheduled into the corresponding availability zone.

However, the control plane nodes created by KubeadmControlPlane all ended up in the default availability zone, regardless of the OPENSTACK_FAILURE_DOMAIN value.

I expected the control plane nodes to be scheduled into the availability zone specified by OPENSTACK_FAILURE_DOMAIN, or at least provide a way to explicitly configure the availability zone per control plane node.

Cluster API Provider OpenStack version: v0.12.3
Cluster-API version: v1.10.2
OpenStack version: 3.14.2

When the OPENSTACK_FAILURE_DOMAIN was set to kr-pub-b(OPENSTACK_FAILURE_DOMAIN=kr-pub-b), the YAML for each Machine was as follows:

• control plane machine

Spec:
  ...
  Failure Domain: kr-wmi-b
  ...

• worker machine

Spec:
  ...
  Failure Domain: kr-pub-b
  ...

Thanks.