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CHANGELOG.md

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 # Azure Kubernetes Service Changelog
 
+## Release 2023-02-19
+
+Monitor the release status by regions at [AKS-Release-Tracker](https://releases.aks.azure.com/).
+
+### Announcements
+
+* AKS will [deprecate](https://learn.microsoft.com/azure/aks/supported-kubernetes-versions?tabs=azure-cli#aks-kubernetes-release-calendar) Kubernetes version 1.23 on April 2nd 2023. Please upgrade your AKS clusters to version 1.24 or above.
+* Starting with Kubernetes 1.26:
+ * HostProcess Containers will be GA
+ * Some AKS labels will be deprecated. Update your AKS labels to the recommended substitutions. See more information on label deprecations and how to update your labels in the [Use labels in an AKS cluster](https://docs.microsoft.com/azure/aks/use-labels) documentation.
+* Starting with Kubernetes 1.27:
+ * The Max Surge default value will change on newly created nodepools from 1 to 10%.
+* AKS began pod security policy deprecation on 2022-11-01 API. The [pod security policy](https://learn.microsoft.com/azure/aks/use-pod-security-policies) will be removed completely on 2023-06-01 API with AKS 1.25 version or higher. You can migrate pod security policy to [pod security admission controller](https://learn.microsoft.com/azure/aks/use-psa) before the deprecation deadline.
+* Azure Policy will be updated to [GateKeeper 3.11](https://github.com/open-policy-agent/gatekeeper/releases/tag/v3.11.0) on Feb 20th for AKS 1.24 and up.
+* Starting from the release of 2023-02-19 clusters with automatic [node image upgrades](https://learn.microsoft.com/azure/aks/auto-upgrade-cluster#using-cluster-auto-upgrade) (node-image auto-upgrade channel) will have nightly in-place patches turned off. Node image auto upgrade offers a better idempotent way to receive these fixes on a schedule (via [upgrade schedules](https://learn.microsoft.com/azure/aks/planned-maintenance#add-a-maintenance-window-configuration-with-a-json-file)). Clusters not using the node-image auto-upgrade channel remain unchanged in preparation for the release of the [OS Upgrade Channel](https://github.com/Azure/AKS/issues/2181) functionality.
+
+### Release notes
+
+* Behavior Changes
+ * Clusters on upgrade-channel nodeimage or nodeos-channel will no longer pull security updates through unattended upgrade. They will now get security updates through the weekly node image upgrade.
+* Component Updates
+ * Cluster Autoscaler has been upgraded to v1.25.2.
+ * Azure Disk CSI driver has been upgraded to v1.26.2.
+ * Windows Azure CNI version has been upgraded to v1.4.43.
+ * AKS Ubuntu 18.04 image has been updated to [AKSUbuntu-1804-2023.02.15](vhd-notes/aks-ubuntu/AKSUbuntu-1804/2023.02.15.txt).
+ * AKS Ubuntu 22.04 image has been updated to [AKSUbuntu-2204-2023.02.15](vhd-notes/aks-ubuntu/AKSUbuntu-2204/2023.02.15.txt).
+ * AKS Windows 2019 image has been updated to [17763.4010.230216](vhd-notes/AKSWindows/2019/17763.4010.230216.txt).
+ * AKS Windows 2022 image has been updated to [20348.1547.230216](vhd-notes/AKSWindows/2022/20348.1547.230216.txt).
+ * AKS Mariner image has been updated to [AKSMariner-2023.02.15](vhd-notes/AKSMariner/2023.02.15.txt).
+
+
+
 ## Release 2023-02-12
 
 Monitor the release status by regions at [AKS-Release-Tracker](https://releases.aks.azure.com/).