[Feedback]Update AKS Documentation to Explain API Server Private Endpoint Subnet Selection

[krishna95sai]

Please review and help in updating the document for the below issue

Issue: After stopping/starting the AKS cluster, API private endpoint was created in the user nodepool subnet, before stopping the cluster API private endpoint was created in system nodepool subnet.

Problem

Current documentation does not explain that the API server private endpoint subnet selection is based on the first node pool subnet.

Proposed Change

Add a note stating that

• AKS selects the subnet associated with the first node pool when creating the API server private endpoint.
• Recreating the system node pool or changing node pool order may result in the private endpoint being recreated in a different subnet.

Customer Impact

This clarification helps customers understand changes in API server private endpoint placement and avoid unexpected networking behavior.

[sjwaight]

@rahulrai-in can you help?

[rahulrai-in]

Thanks for sharing the feedback. We have updated the docs to clarify API server private endpoint placement after cluster stop/start

Link: https://learn.microsoft.com/en-us/azure/aks/start-stop-cluster?tabs=azure-cli