Ensure network policy is configured for Azure Kubernetes Cluster

Using incorrect network policy for Azure Kubernetes Cluster may lead to compromised infrastructure.

The network profile of an AKS cluster cannot be changed once it has been created. To create a new resource with the appropriate settings, follow the steps below.

In Azure Console -

1. Open the Azure Portal and go to Kubernetes Services.
2. Click the Create button and select Create a Kubernetes Cluster.
3. Configure as needed. On the Networking tab, under Security, set the Network Policy to either Azure or Calico.

In Terraform -

1. In the azurerm_kubernetes_cluster resource, add a network_profile block.
2. Set the field network_profile.network_policy field to either azure or calico.

References:
https://learn.microsoft.com/en-us/azure/aks/configure-azure-cni
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/kubernetes_cluster