Jenkins setup: I have my Jenkins controller setup on ECS cluster and also using ECS plugin to provision Jenkins docker agents on ECS. For Jenkins agents, i am using jenkins/inbound-agent:latest-alpine-jdk21 docker image and the ECS plugin uses JNLP for connection b/w controller and the agent. I ab…

Thank you @mawinter69 for the quick response. I was stuck at it from past few days and its solved now, for the quick fix, i moved to use ubuntu image instead. I am now getting another issue with “Maven Project” type jobs, i not able to change the Java version, my jobs needs Java 8 which is present …

Move away from the maven project type. On Maven Integration plugin page the problems of that job type are explained. You might try to still use Java 21 but explicitly set the source and target versions for the compiler in your pom. But I don’t know if that works for Java 8.

There are some cases where you cannot compile Java 8 code with Java 21. We have customized Jenkins agents with Java 8, 17, and 21 installed; we’ve just moved most of our code from Java 8 to Java 21 and the Agents themselves are running with Java 17. The agent only has Java 17 on the path. To get a…

Thanks for the guidance @mawinter69 , I converted all my “Maven Project” type jobs to Pipeline type jobs.

Not able to use different java version when using ECS plugin for dynamic agent setup

Using Jenkins

mawinter69 (Markus Winter) November 16, 2025, 12:25pm 2

see Remoting Agent with Java 17 & Alpine causing incorrect Java version to be picked up

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Not able to use different java version when using ECS plugin for dynamic agent setup

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