Java 17 is available for early adopters when using the Docker images ( jenkins/jenkins: jdk17-preview) These requirements apply to all components of the Jenkins system, including Jenkins controller, all types of agents, CLI clients, and other components.
There are separate run and job execution requirements for Jenkins installations. Modern Jenkins versions have the following Java requirements: Java 8 runtime environments, both 32-bit and 64-bit versions are supported Since Jenkins 2.164 and 2.164.1 [ 1], Java 11 runtime environments are supported.
Since Jenkins is commonly used for building and deploying the java applications, it offers excellent features for the same. As a default one, Jenkins will use the java version which it find from the system path.
What version of Java do I need for Jenkins?
As of Version 2.38 of Jenkins it’s possible to use JDK 1.8. Jenkins now requires Java 8 or 11. To cite Jenkin’s Java Requirements: There are some precautions to take when upgrading from Java 8 to Java 11 in Jenkins, please follow these guidelines.
Also, does Jenkins support older versions of OpenJDK?
From the Jenkins site here, it says versions older than Java 8 are not supported. However, there seem to be a workaround on using Open. Jdk 12 with Jenkins 2.121.3 on this stackoverflow post which could be of help.
This of course begs the question “Which JDK should I use for Jenkins jobs?”
Our answer was you can use any jdk ( 1.5+ 1.7+ for 1.608+ ) you want for Jenkins: this is separate from the JDK that a job would use (either a job running on the master, or on a slave). So it doesn’t really matter: using one JDK for running Jenkins won’t prevent you to use any other JDK for your jobs.
What is Jenkins version monitoring for Java?
Modern versions of Jenkins controllers and Jenkins agents verify Java requirements and notify users when they are launched with an unsupported version. The Jenkins Versions Node Monitors plugin provides detailed Java version monitoring.
How do I upgrade my Jenkins agent to Java 11?
If you’re upgrading your Jenkins controller to run on Java 11, you also need to upgrade the JVM on your agents. You can validate the version of each agent with the Versions Node Monitors plugin. This plugin provides information about the JVM version of each agent on the node management screen of your Jenkins instance.
What version of Jenkins should I use for production deployments?
Production deployments should use only LTS versions of Jenkins. The easiest way to run Jenkins on Java 11 is with a Docker image. To use the latest weekly release of the Java 11-based images, use the jdk11 tag. For other releases, append the -jdk11 tag to the version (for example, 2.284-jdk11 ).