Feature Request: anti-affinity for controlplan / worker

[clopnis]

Azimuth’s Kubernetes deployment could ensures resilience against OpenStack compute node failures by leveraging severgroup anti-affinity rules for both control plane and worker nodes.

Key Benefits:

1. Fault Tolerance by Design
   Deploy control plane nodes (etcd, API server, etc.) and/or worker nodes across separate OpenStack compute hosts using anti-affinity policies.
   If a physical compute node fails, your Kubernetes cluster remains operational with no single point of failure (SPOF).
2. Flexible Deployment Modes
   Control Plane HA: Distribute master components across multiple compute nodes to prevent downtime during hardware failures.
   Worker Node HA: Spread workloads across unrelated hosts to minimize pod disruption.
3. Use Cases
   Production-Grade Clusters: Meet SLA requirements for uptime.
   Stateful Workloads: Protect databases or critical pods from host failures.
   Cost-Efficient HA: Avoid over-provisioning by strategically distributing nodes.

Openstack feature : https://docs.openstack.org/nova/latest/user/server-groups.html