clarifications

Author: JnHs

articles/azure-arc/kubernetes/conceptual-extensions.md

@@ -1,6 +1,6 @@
 ---
 title: "Cluster extensions - Azure Arc-enabled Kubernetes"
-ms.date: 01/23/2023
+ms.date: 03/08/2023
 ms.topic: conceptual
 description: "This article provides a conceptual overview of the Azure Arc-enabled Kubernetes cluster extensions capability."
 ---
@@ -34,6 +34,9 @@ Both the `config-agent` and `extensions-manager` components running in the clust
 >
 > Protected configuration settings for an extension instance are stored for up to 48 hours in the Azure Arc-enabled Kubernetes services. As a result, if the cluster remains disconnected during the 48 hours after the extension resource was created on Azure, the extension changes from a `Pending` state to `Failed` state. To prevent this, we recommend bringing clusters online regularly.
 
+> [!IMPORTANT]
+> Currently, Azure Arc-enabled Kubernetes cluster extensions aren't supported on ARM64-based clusters. To [install and use cluster extensions](extensions.md), the cluster must have at least one node of operating system and architecture type `linux/amd64`.
+
 ## Extension scope
 
 Each extension type defines the scope at which they operate on the cluster. Extension installations on Arc-enabled Kubernetes clusters are either *cluster-scoped* or *namespace-scoped*.

articles/azure-arc/kubernetes/extensions.md

@@ -1,7 +1,7 @@
 ---
 title: "Azure Arc-enabled Kubernetes cluster extensions"
 ms.custom: event-tier1-build-2022, ignite-2022
-ms.date: 01/23/2023
+ms.date: 03/08/2023
 ms.topic: how-to
 description: "Deploy and manage lifecycle of extensions on Azure Arc-enabled Kubernetes clusters."
 ---
@@ -39,7 +39,7 @@ Before you begin, read the [conceptual overview of Arc-enabled Kubernetes cluste
     az extension update --name k8s-extension
     ```
 
-* An existing Azure Arc-enabled Kubernetes connected cluster.
+* An existing Azure Arc-enabled Kubernetes connected cluster with at least  one node of operating system and architecture type `linux/amd64`
   * If you haven't connected a cluster yet, use our [quickstart](quickstart-connect-cluster.md).
   * [Upgrade your agents](agent-upgrade.md#manually-upgrade-agents) to the latest version.
 

articles/azure-arc/kubernetes/quickstart-connect-cluster.md

@@ -2,7 +2,7 @@
 title: "Quickstart: Connect an existing Kubernetes cluster to Azure Arc"
 description: In this quickstart, you learn how to connect an Azure Arc-enabled Kubernetes cluster.
 ms.topic: quickstart
-ms.date: 03/07/2023
+ms.date: 03/08/2023
 ms.custom: template-quickstart, mode-other, devx-track-azurecli, devx-track-azurepowershell
 ms.devlang: azurecli
 ---
@@ -59,7 +59,7 @@ In addition to the prerequisites below, be sure to meet all [network requirement
   * Self-managed Kubernetes cluster using [Cluster API](https://cluster-api.sigs.k8s.io/user/quick-start.html)
 
     >[!NOTE]
-    > The cluster needs to have at least one node of operating system and architecture type `linux/amd64` and/or `linux/arm64`.
+    > The cluster needs to have at least one node of operating system and architecture type `linux/amd64` and/or `linux/arm64`. See [Cluster requirements](system-requirements.md#cluster-requirements) for more about ARM64 scenarios.
 
 * At least 850 MB free for the Arc agents that will be deployed on the cluster, and capacity to use approximately 7% of a single CPU.
 * A [kubeconfig file](https://kubernetes.io/docs/concepts/configuration/organize-cluster-access-kubeconfig/) and context pointing to your cluster.

articles/azure-arc/kubernetes/system-requirements.md

@@ -1,6 +1,6 @@
 ---
 title: "Azure Arc-enabled Kubernetes system requirements"
-ms.date: 03/07/2023
+ms.date: 03/08/2023
 ms.topic: conceptual
 description: Learn about the system requirements to connect Kubernetes clusters to Azure Arc.
 ---
@@ -15,9 +15,12 @@ Azure Arc-enabled Kubernetes works with any Cloud Native Computing Foundation (C
 
 You must also have a [kubeconfig file](https://kubernetes.io/docs/concepts/configuration/organize-cluster-access-kubeconfig/) and context pointing to your cluster.
 
-The cluster must have at least one node with operating system and architecture type `linux/amd64` and/or `linux/arm64`. Many Arc-enabled Kubernetes features and scenarios are supported on ARM64 nodes, such as [cluster connect](cluster-connect.md) and [viewing Kubernetes resources in the Azure portal](kubernetes-resource-view.md). However, if using Azure CLI to enable these scenarios, note that [Azure CLI must be installed](/cli/azure/install-azure-cli) and run from an AMD64 machine.
+The cluster must have at least one node with operating system and architecture type `linux/amd64` and/or `linux/arm64`.
 
-Currently, Azure Arc-enabled Kubernetes [cluster extensions](conceptual-extensions.md) aren't supported on ARM64-based clusters. To install and use cluster extensions, the cluster must have at least one node of operating system and architecture type `linux/amd64`.
+> [!IMPORTANT]
+> Many Arc-enabled Kubernetes features and scenarios are supported on ARM64 nodes, such as [cluster connect](cluster-connect.md) and [viewing Kubernetes resources in the Azure portal](kubernetes-resource-view.md). However, if using Azure CLI to enable these scenarios, note that [Azure CLI must be installed](/cli/azure/install-azure-cli) and run from an AMD64 machine.
+>
+> Currently, Azure Arc-enabled Kubernetes [cluster extensions](conceptual-extensions.md) aren't supported on ARM64-based clusters. To [install and use cluster extensions](extensions.md), the cluster must have at least one node of operating system and architecture type `linux/amd64`.
 
 ## Compute and memory requirements