AKS changed the behavior of the cluster FQDN and it's now adding a public FQDN pointing to the private IP of the cluster. This is not the intent behavior for a secure cluster. Here is the change that will revert the expected behavior to use a private endpoint using the internal private dns for it.
AKS changed the behavior of the cluster FQDN and it's now adding a public FQDN pointing to the private IP of the cluster. This is not the intent behavior for a secure cluster. Here is the change that will revert the expected behavior to use a private endpoint using the internal private dns for it.
Reference: https://docs.microsoft.com/en-us/azure/aks/private-clusters#disable-public-fqdn