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Available extensions for Azure Arc-enabled Kubernetes clusters

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Cluster extensions for Azure Arc-enabled Kubernetes provide an Azure Resource Manager-based experience to install and manage lifecycles for different Azure capabilities in your cluster. You can deploy extensions to your clusters to support different scenarios and to improve cluster management.

The following extensions are currently available to use with Azure Arc-enabled Kubernetes clusters. With one exception, all the extensions that are described in this article are cluster-scoped. Azure API Management on Azure Arc is namespace-scoped.

Container insights in Azure Monitor

  • Supported distributions: All Cloud Native Computing Foundation (CNCF)-certified Kubernetes clusters.

The Container insights feature in Azure Monitor gives you a view into the performance of workloads that are deployed on your Kubernetes cluster. Use this extension to collect memory and CPU utilization metrics from controllers, nodes, and containers.

For more information, see Container insights for Azure Arc-enabled Kubernetes clusters.

Azure Policy

Azure Policy extends Gatekeeper, an admission controller webhook for Open Policy Agent (OPA). Use Gatekeeper with OPA to consistently apply centralized, at-scale enforcements and safeguards on your clusters.

For more information, see Understand Azure Policy for Kubernetes clusters.

Azure Key Vault Secrets Provider

  • Supported distributions: AKS on Azure Stack HCI, AKS enabled by Azure Arc, Cluster API Azure, Google Kubernetes Engine, Canonical Kubernetes Distribution, OpenShift Kubernetes Distribution, Amazon Elastic Kubernetes Service, and VMware Tanzu Kubernetes Grid.

Use the Azure Key Vault Provider for Secrets Store CSI Driver to integrate an instance of Azure Key Vault as a secrets store with a Kubernetes cluster via a CSI volume. For Azure Arc-enabled Kubernetes clusters, you can install the Azure Key Vault Secrets Provider extension to fetch secrets.

For more information, see Use the Azure Key Vault Secrets Provider extension to fetch secrets into Azure Arc-enabled Kubernetes clusters.

Secret Store

  • Supported distributions: All CNCF-certified Kubernetes clusters that are connected to Azure Arc and running Kubernetes 1.27 or later.

The Azure Key Vault Secret Store extension for Kubernetes (Secret Store) automatically syncs secrets from an instance of Azure Key Vault to a Kubernetes cluster for offline access. You can use Azure Key Vault to store, maintain, and rotate your secrets, even when you run your Kubernetes cluster in a semi-disconnected state.

We recommend the Secret Store extension for scenarios that require offline access, or if you need secrets synced to the Kubernetes secret store. If you don't need to use these features, we recommend that you instead use the Azure Key Vault Secrets Provider extension.

For more information, see Use the Secret Store extension to fetch secrets for offline access in Azure Arc-enabled Kubernetes clusters.

Important

Secret Store is currently in preview.

See the Supplemental Terms of Use for Microsoft Azure Previews for legal terms that apply to Azure features that are in beta, preview, or otherwise not yet released into general availability.

Microsoft Defender for Containers

  • Supported distributions: AKS enabled by Azure Arc, Cluster API Azure, Azure Red Hat OpenShift, Red Hat OpenShift (version 4.6 or later), Google Kubernetes Engine Standard, Amazon Elastic Kubernetes Service, VMware Tanzu Kubernetes Grid, Rancher Kubernetes Engine, and Canonical Kubernetes Distribution.

Microsoft Defender for Containers is the cloud-native solution that is used to secure your containers so you can improve, monitor, and maintain the security of your clusters, containers, and their applications. Microsoft Defender for Containers gathers information related to security, such as audit log data, from the Kubernetes cluster. Then, it provides recommendations and threat alerts based on the gathered data.

For more information, see Enable Microsoft Defender for Containers.

Important

Defender for Containers support for Azure Arc-enabled Kubernetes clusters is currently in public preview.

See the Supplemental Terms of Use for Microsoft Azure Previews for legal terms that apply to Azure features that are in beta, preview, or otherwise not yet released into general availability.

Azure Arc-enabled Open Service Mesh

  • Supported distributions: AKS, AKS on Azure Stack HCI, AKS enabled by Azure Arc, Cluster API Azure, Google Kubernetes Engine, Canonical Kubernetes Distribution, Rancher Kubernetes Engine, OpenShift Kubernetes Distribution, Amazon Elastic Kubernetes Service, and VMware Tanzu Kubernetes Grid.

Open Service Mesh (OSM) is a lightweight, extensible, Cloud Native service mesh that allows users to uniformly manage, secure, and get out-of-the-box observability features for highly dynamic microservice environments.

For more information, see Azure Arc-enabled Open Service Mesh.

Azure Arc-enabled data services

  • Supported distributions: AKS, AKS on Azure Stack HCI, Azure Red Hat OpenShift, Google Kubernetes Engine, Canonical Kubernetes Distribution, OpenShift Container Platform, and Amazon Elastic Kubernetes Service.

This extension makes it possible for you to run Azure data services on-premises, at the edge, and in public clouds by using Kubernetes and the infrastructure of your choice. This extension enables the custom locations feature, providing a way to configure Azure Arc-enabled Kubernetes clusters as target locations for deploying instances of Azure offerings.

For more information, see Azure Arc-enabled data services and Create custom locations.

Azure App Service on Azure Arc

  • Supported distributions: AKS, AKS on Azure Stack HCI, Azure Red Hat OpenShift, Google Kubernetes Engine, OpenShift Container Platform.

Use this extension to provision an App Service Kubernetes environment on top of an Azure Arc-enabled Kubernetes cluster.

For more information, see Set up an Azure Arc-enabled Kubernetes cluster to run App Service apps, function apps, and logic apps (Preview).

Important

App Service on Azure Arc is currently in public preview. Review the public preview limitations for App Service Kubernetes environments before you deploy this extension.

See the Supplemental Terms of Use for Microsoft Azure Previews for legal terms that apply to Azure features that are in beta, preview, or otherwise not yet released into general availability.

Azure Event Grid on Kubernetes

  • Supported distributions: AKS, Red Hat OpenShift.

Event Grid is an event broker you can use to integrate workloads that use event-driven architectures. Use this extension to create and manage Event Grid resources such as topics and event subscriptions with Azure Arc-enabled Kubernetes clusters.

For more information, see Event Grid on Kubernetes with Azure Arc (Preview).

Important

Event Grid on Kubernetes with Azure Arc is currently in public preview.

See the Supplemental Terms of Use for Microsoft Azure Previews for legal terms that apply to Azure features that are in beta, preview, or otherwise not yet released into general availability.

Azure API Management on Azure Arc

  • Supported distributions: All CNCF-certified Kubernetes clusters.

With the integration between Azure API Management and Azure Arc on Kubernetes, you can deploy the API Management gateway component as an extension in an Azure Arc-enabled Kubernetes cluster. This extension is namespace-scoped, not cluster-scoped.

For more information, see Deploy an Azure API Management gateway on Azure Arc (preview).

Important

The API Management self-hosted gateway on Azure Arc is currently in public preview.

See the Supplemental Terms of Use for Microsoft Azure Previews for legal terms that apply to Azure features that are in beta, preview, or otherwise not yet released into general availability (GA).

Azure Arc-enabled Machine Learning

  • Supported distributions: All CNCF-certified Kubernetes clusters. Not currently supported for ARM64 architectures.

Use the Azure Machine Learning extension to deploy and run Azure Machine Learning on an Azure Arc-enabled Kubernetes cluster.

For more information, see Introduction to the Kubernetes compute target in Azure Machine Learning and Deploy the Azure Machine Learning extension on an AKS or Arc Kubernetes cluster.

Flux (GitOps)

  • Supported distributions: All CNCF-certified Kubernetes clusters.

GitOps on AKS and Azure Arc-enabled Kubernetes uses Flux v2, a popular open-source tool set, to help manage cluster configuration and application deployment. GitOps is enabled in the cluster as a Microsoft.KubernetesConfiguration/extensions/microsoft.flux cluster extension resource.

For more information, see Tutorial: Deploy applications using GitOps with Flux v2.

The most recent version of the Flux v2 extension and the two previous versions (N-2) are supported. We generally recommend that you use the most recent version of the extension.

Important

The release Flux v2.3.0 includes API changes to the HelmRelease and HelmChart APIs, with deprecated fields removed, and an updated version of the Kustomize package. An upcoming minor version update of the Microsoft Flux extension will include these changes, consistent with the upstream open-source software (OSS) Flux project.

The HelmRelease API will be promoted from v2beta1 to v2 (GA). The v2 API is backward compatible with v2beta1, with the exception of these deprecated fields:

  • .spec.chart.spec.valuesFile: Replaced by .spec.chart.spec.valuesFiles in v2.
  • .spec.postRenderers.kustomize.patchesJson6902: Replaced by .spec.postRenderers.kustomize.patches in v2.
  • .spec.postRenderers.kustomize.patchesStrategicMerge: Replaced by .spec.postRenderers.kustomize.patches in v2.
  • .status.lastAppliedRevision: Replaced by .status.history.chartVersion in v2.

The HelmChart API will be promoted from v1beta2 to v1 (GA). The v1 API is backward compatible with v1beta2, with the exception of the .spec.valuesFile field, which is replaced by .spec.valuesFiles.

The new fields are already available in the current version of the APIs. Use the new fields instead of the fields that will be removed in the upcoming release.

The Kustomize package will be updated to v5.4.0. The version contains the following breaking changes:

To avoid issues caused by breaking changes, we recommend that you update your manifest to ensure that your Flux configurations remain compliant with this release.

Note

When a new version of the microsoft.flux extension is released, it might take several days for the new version to become available in all regions.

1.13.1 (October 2024)

Flux version: Release v2.4.0

  • source-controller: v1.4.1
  • kustomize-controller: v1.4.0
  • helm-controller: v1.1.0
  • notification-controller: v1.4.0
  • image-automation-controller: v0.39.0
  • image-reflector-controller: v0.33.0

Changes in this version include:

  • Added support for the --feature-gates=StrictPostBuildSubstitutions=true controller flag to enable strict post-build variable substitution.
  • Addressed security vulnerabilities in the fluxconfig-agent by updating the Go packages.

1.13.0 (October 2024)

Flux version: Release v2.4.0

  • source-controller: v1.4.1
  • kustomize-controller: v1.4.0
  • helm-controller: v1.1.0
  • notification-controller: v1.4.0
  • image-automation-controller: v0.39.0
  • image-reflector-controller: v0.33.0

Changes in this version include:

  • Implemented fix to retrieve certificates from the correct location, resolving failures that occurred after switching the image from Alpine to Mariner.

1.12.0 (September 2024)

Flux version: Release v2.3.0

  • source-controller: v1.3.0
  • kustomize-controller: v1.3.0
  • helm-controller: v1.0.1
  • notification-controller: v1.3.0
  • image-automation-controller: v0.38.0
  • image-reflector-controller: v0.32.0

Changes in this version include:

  • Addressed security vulnerabilities in fluxconfig-agent and fluxconfig-controller by updating the Go packages.
  • Fixed issue with software bill of materials (SBOM) generation for fluxconfig-agent and fluxconfig-controller.
  • Added support for vertical scaling. Currently, only specific parameters that are described in the Flux vertical scaling documentation are natively supported.

Dapr extension for Azure Kubernetes Service (AKS) and Azure Arc-enabled Kubernetes

Dapr is a portable, event-driven runtime that simplifies building resilient, stateless, and stateful applications that run in the cloud and edge and embrace the diversity of languages and developer frameworks. The Dapr extension eliminates the overhead of downloading Dapr tooling and manually installing and managing the runtime on your clusters.

For more information, see Dapr extension for AKS and Azure Arc-enabled Kubernetes.

Azure AI Video Indexer

  • Supported distributions: All CNCF-certified Kubernetes clusters.

Azure AI Video Indexer enabled by Arc runs video and audio analysis on edge devices. The solution is designed to run on an Azure Stack Edge profile, which is a heavy edge device. The solution supports many video formats, including MP4 and other common formats. It supports several languages in all basic audio-related models.

For more information, see Try Azure AI Video Indexer enabled by Azure Arc.

Edge Storage Accelerator

  • Supported distributions: AKS enabled by Azure Arc, AKS Edge Essentials, Ubuntu.

Edge Storage Accelerator (ESA) is a first-party storage system that's designed for Azure Arc-connected Kubernetes clusters. You can deploy ESA to write files to a 'ReadWriteMany' persistent volume claim (PVC), where they're transferred to Azure Blob Storage. ESA offers a range of features to support Azure IoT operations and other Azure Arc features.

For more information, see What is Edge Storage Accelerator?.

Connected registry on Azure Arc-enabled Kubernetes

  • Supported distributions: AKS enabled by Azure Arc, Kubernetes by using the kind tool.

Use the connected registry extension for Azure Arc to sync container images between your instance of Azure Container Registry and your on-premises Azure Arc-enabled Kubernetes cluster. You can deploy this extension to either a local cluster or to a remote cluster. The extension uses a sync schedule and window to ensure seamless syncing of images between the on-premises connected registry and the cloud-based instance of Azure Container Registry.

For more information, see Connected registry for Azure Arc-enabled Kubernetes clusters.

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