7/22/2023 0 Comments Install java jdkIn the k8s announcement an important caveat is this “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.”Ģ-Ĝustomers who are using any JDK below 11.0.16 i.e., 11.0.10 and who upgraded to 1.25 started noticing that their pods are not respecting resource and limits leading to all sorts of performance issues and OOMs.ġ-ěest path is to update our JDK version to a one that has the fix i.e. One of our customer has moved to 1.25 with older SDK noticed their cluster node size has almost doubled to meet the app resource demand otherwise OOM issue(17 nodes toġ- In 1.25 cgroupsV2 became default also in 1.25 we introduced ubuntu 22.04 which has cgroupsv2 as default too. Java apps running < JDK ver 11 moving to K8s 1.25 showing memory issue - increased resource consumption and at times OOM issue. CGroupsV2 in K8s 1.25 (AKS) having older verison of JDK showing mem issue
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