Merge pull request #298482 from JackStromberg/patch-226302

CNI Overlay Feature Flag

Author: prmerger-automator[bot]

articles/application-gateway/tutorial-ingress-controller-add-on-existing.md

@@ -54,6 +54,9 @@ To configure more parameters for the above command, see [az aks create](/cli/azu
 > [!NOTE]
 > A node resource group will be created with the name **MC_resource-group-name_cluster-name_location**.
 
+>[!NOTE]
+>If you are planning on using AGIC with an AKS cluster using CNI Overlay, specify the parameter `--aks-custom-headers AKSHTTPCustomFeatures=Microsoft.ContainerService/AppGatewayWithOverlayPreview` to configure AGIC to handle connectivity to the CNI Overlay enabled cluster.
+
 ## Deploy a new application gateway 
 
 You'll now deploy a new application gateway, to simulate having an existing application gateway that you want to use to load balance traffic to your AKS cluster, **myCluster**. The name of the application gateway will be **myApplicationGateway**, but you'll need to first create a public IP resource, named **myPublicIp**, and a new virtual network called **myVnet** with address space 10.0.0.0/16, and a subnet with address space 10.0.0.0/24 called **mySubnet**, and deploy your application gateway in **mySubnet** using **myPublicIp**. 

articles/application-gateway/tutorial-ingress-controller-add-on-new.md

@@ -59,6 +59,9 @@ az aks create -n myCluster -g myResourceGroup --network-plugin azure --enable-ma
 > [!NOTE] 
 > Please ensure the identity used by AGIC has the proper permissions. A list of permissions needed by the identity can be found here: [Configure Infrastructure - Permissions](configuration-infrastructure.md#permissions). If a custom role is not defined with the required permissions, you may use the _Network Contributor_ role.
 
+>[!NOTE]
+>If you are planning on using AGIC with an AKS cluster using CNI Overlay, specify the parameter `--aks-custom-headers AKSHTTPCustomFeatures=Microsoft.ContainerService/AppGatewayWithOverlayPreview` to configure AGIC to handle connectivity to the CNI Overlay enabled cluster.
+
 ```azurecli-interactive
 # Get application gateway id from AKS addon profile
 appGatewayId=$(az aks show -n myCluster -g myResourceGroup -o tsv --query "addonProfiles.ingressApplicationGateway.config.effectiveApplicationGatewayId")