github Azure/AKS 2021-12-09
Release 2021-12-09

latest releases: 2024-04-28, 2024-04-11, 2024-03-31...
2 years ago

This release is rolling out to all regions - estimated time for completed roll out is 2021-12-20 for public cloud and 2021-12-23 for sovereign clouds.

Announcement

  • From Kubernetes 1.23, containerD will be the default container runtime for Windows node pools. Docker support will be deprecated in Kubernetes 1.24. You are advised to test your workloads before Docker deprecation happens by following the documentation here https://docs.microsoft.com/en-us/azure/aks/windows-container-cli#add-a-windows-server-node-pool-with-containerd-preview.
  • Konnectivity rollout has been halted for the rest of the year. We will continue the rollout in the new calendar year.
  • AKS is implementing auto-cert rotation slowly over the next few months. We have already enabled the following regions westcentralus, uksouth, eastus, australiacentral, and australiaest. If you have clusters in those regions please run a cluster upgrade in order to have that cluster configured for auto-cert rotation. The following regions brazilsouth, canadacentral, centralindia, and eastasia will be released in January after the holidays as the next group of regions. We will update the release notes will the upcoming schedule going forward until all regions are deployed.
  • Kubernetes 1.19 will be removed on 2022-01-31.
  • Starting with 1.23 AKS will follow upstream kubernetes and deprecate in-tree azure authentication which is marked for deprecation to be replaced with 'exec'. If you are using Azure CLI or Azure clients, AKS will download kubelogin for users automatically. If outside of Azure CLI, users need to download and install kubelogin in order to continue to use kubectl with AAD authentication. https://github.com/Azure/kubelogin

Release Notes

  • Features
    • Kubernetes 1.22 is now GA. Carefully read the Kubernetes release notes, especially the removed APIs section and any breaking changes.
    • New Kubernetes patch versions released, 1.20.13, 1.21.7, 1.22.4.
  • Preview Features
    • Microsoft Defender for containers is now in Public Preview.
    • AKS GitOps agent extension is now in Public Preview.
  • Bug Fixes
    • Corrected validation that silently ignored updates to HTTP proxy settings.
    • Fixed issue that blocked creation of 0 node nodepools.
    • CSI driver probe timeout increased to 30s avoid driver crashes on small Windows VM sizes.
  • Component Updates
    • Calico updated to v3.21.0 on Linux.
    • Updated Azure CNI on Windows to v1.4.16. Fixes #2608
    • AKS Ubuntu 18.04 image updated to AKSUbuntu-1804-2021.12.07

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