Azure Kubernetes Service 지원 버전

Question

https://learn.microsoft.com/en-us/azure/aks/supported-kubernetes-versions?tabs=azure-cli#kubernetes-version-support-policy

위 페이지에서 새로운 마이너 버전이 도입되면 가장 오래된 마이너 버전은 더 이상 사용되지 않고 제거된다고 작성되어있는데요.

혹시 1.27 버전의 지원이 종료되었을 때 사용중인 1.27버전의 AKS 클러스터가 있다면 업그레이드를 하지 않고 사용할 수 있나요?

지원 종료 시 업그레이드가 강제되는지에 대한 답변이 필요합니다.

Answer 1

@Giseong Shin
Thanks for your question. I have translated your question and will do my best to answer it.

English Translation:

"On the page above, it says that when a new minor version is introduced, the oldest minor version is deprecated and removed.

If I have an AKS cluster with version 1.27 that I am using when version 1.27 reaches the end of support, can I use it without upgrading?

I need an answer as to whether the upgrade will be forced at the end of support."

If you’re using AKS version 1.27, which is designated for Long-Term Support (LTS), it will go End of Life (EOL) by July 2025. You will be able to upgrade from 1.27 LTS to the next LTS version, 1.30, starting in August 2024. This only applies if you are using Long-Term Support as outlined here.

When AKS releases 1.30, all the 1.27 versions go out of support 30 days later. The release happened on July 16, 2024 and can be found here. If you are not using LTS a forced upgrade will happen before reaching n-4. This is outlined in our FAQ here.

AKS initiates auto-upgrades for unsupported clusters. When a cluster in an n-3 version (where n is the latest supported AKS GA minor version) is about to drop to n-4, AKS automatically upgrades the cluster to n-2 to remain in an AKS support policy. Automatically upgrading a platform supported cluster to a supported version is enabled by default.

For example, Kubernetes v1.27 upgrades to v1.29 during the v1.31 GA release. To minimize disruptions, set up maintenance windows. See auto-upgrade for details on automatic upgrade channels

Summary:

When AKS version 1.27 reaches End of Life (EOL) on August 15, 2024, several things will happen:

No More Updates: You will no longer receive any updates, including critical security patches and bug fixes.

Increased Risk: Running an EOL version exposes your cluster to potential security vulnerabilities and operational risks.

Automatic Upgrade: AKS will automatically upgrade your cluster to a supported version before the next version (1.31) is released.

While you can technically keep using version 1.27 after it reaches EOL, it’s highly recommended to upgrade to a supported version to ensure your cluster remains secure and stable.

Hope this answers your question. Let me know if you need further assistance.

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