Environment to Run Jenkins swarm-client.jar

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Jenkins setup: Jenkins 2.440.3

Hi Jenkins Experts,

I’m trying to figure out what java version do I need to run a given swarm-client.jar downloaded from

${JENKINS_URL}/swarm/swarm-client.jar (ref: GitHub - jenkinsci/swarm-plugin: Jenkins swarm plugin)

The github page specifies JRE to be 11+, but this doesn’t apply to the older version of Jenkins right? Also how can I check the swarm-client.jar version I got from Jenkins?

Thanks in advance!

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Use the same JDK version that is running your Jenkins controller. That version is displayed in the system information page that is available under “Manage Jenkins”

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Thanks Mark! This is great to know. How do I find the corresponding swarm-client version for a Jenkins version? If I follow the instruction for swarm plugin, e.g downloading from ${JENKINS_URL}/swarm/swarm-client.jar

But that doesn’t include any version information

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Download the swarm client from that location and that is the correct version. The swarm plugin supports a range of Jenkins versions. If the swarm plugin is installed and enabled on your Jenkins controller, then download from that URL will provide the correct swarm-client.jar file.

I didn’t find a way to report the version that is included in the swarm-client jar file. The version information is stored in META-INF/maven/org.jenkins-ci.plugins/swarm-client/pom.xml inside the jar file, but there does not seem to be a command line argument that reports the swarm client jar file version number.

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This is good to know. Thank you!