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Behavioural Changes in AKS Cluster upgrade from 1.24.6 to 1.25.5

Jones Amas 5 Reputation points
2023-06-09T19:02:20.5233333+00:00

AKS clusters work well with an upgrade from 1.24.6 to 1.24.9,1.24.10 and started behavioral changes immediately after we upgraded to 1.25.5 follow by1.25.6 with pods keep restarting

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Azure Kubernetes Service
Azure Kubernetes Service
An Azure service that provides serverless Kubernetes, an integrated continuous integration and continuous delivery experience, and enterprise-grade security and governance.
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  1. Mutaz Nassar 2,361 Reputation points Microsoft Employee
    2023-06-09T21:27:38.63+00:00

    Hi Jones,
    Starting from AKS version 1.25, agent nodes will be using Ubuntu 22.04 by default with cgroupv2,  If you deploy Java applications with the JDK, prefer to use JDK 11.0.16 and later or JDK 15 and later, which fully support cgroup v2 as described here .

    For more information about cgroup v2 you can refer to this article.

    Does your application use Java or .NET Core? if your application is still not migrated to use cgroup v2 then you can revert Kubernetes 1.25 to cgroup v1 as described here.

    Please "Accept as Answer" if it helped, so that it can help others in the community looking for help on similar topics.

    2 people found this answer helpful.

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