Platform SIG October 21,2025

[poddingue (Bruno Verachten)]

2025 10 21 Jenkins Platform SIG

Attending:

• Bruno Verachten
• Mark Waite

Agenda

• Java 25
  • Released Sep 16, 2025
  • The infra team has been working on it.
    • Plugin maintainers can give it a try
      • Available as a tool
      • A .mvn/maven.config may be necessary
  • We are trying to compile the top 250 plugins with JDK25
    • Results there: Jenkins PR Tracker

Summary
Total Plugins Tested	250
Successful Builds	129	51.60%
Failed Builds	121	48.40%

• Agents

  • We now have a JDK25 Docker agent image
  • We don’t have a JDK25 Docker SSH agent image, as feat(linux): add support on Linux for JDK 25 preview in Docker build configurations is still in review

• Controller

  • feat(linux): add support on Linux for JDK 25 preview in Docker build configurations has been closed, as Jenkins controller isn’t compatible with Java 25 yet cf jenkins-infra/jenkins.io#8458 (comment)

• Container image updates for the Jenkins controller

  • LTS
    • 2.528.1 was released last week
      • Breaking changes
        • Update debian images to trixie
      • Dependency updates
        • Bump Debian Trixie version to 20250929
        • Bump Alpine Linux Version to 3.22.2
        • Bump ubi9/ubi 9.6-1760340943
      • Documentation updates
        • Add link to post-installation setup wizard in README
        • Update Docker image references from JDK 17 to JDK 21
      • Maintenance
        • Rename JENKINS_URL & JENKINS_SHA to WAR_URL & WAR_SHA
        • Download war from mirrors unless we are publishing a release
  • Weeklies (2.532 and 2.533)
    • Documentation
      • Update Docker image references from JDK 17 to JDK 21
    • Dependency updates
      • Bump ubi9/ubi to 9.6-1760340943
      • Bump Alpine Linux Version to 3.22.2

• Container image updates for Jenkins agents

  • One new release for the SSH agent (7.3.0)
    • New features and improvements
      • Bump git-lfs version to 3.7.1
    • Maintenance
      • Install git-lfs from repository instead of Linux distribution packages
  • Two new releases for the docker agent (3345.v03dee9b_f88fc-1 and 3345.v03dee9b_f88fc-2)
    • New features and improvements
      • Bump the Jenkins remoting version to 3345.v03dee9b_f88fc
      • Add JDK25 Windows images
      • Bump Git version on Windows to 2.51.1.windows.1
      • Bump git-lfs version to 3.7.1
    • Maintenance
      • No dot in jlink version switch
      • Install git-lfs from repository instead of Linux distribution packages
    • Dependency updates
      • Bump Alpine Linux Version to 3.22.2
      • Bump UBI9 version to 9.6-1760340943

• Work in progress on images:

  • Controller:
    • fix: take in account Jenkins versioning format in versionLT and Compare-VersionLessThan
    • Add more documentation to README
  • Docker-agent:
    • chore(windows): run each JDK tests in parallel
    • Set permission of home directory for debian based images
    • Accept $REMOTING_OPTS containing spaces
  • Docker-ssh-agent:
    • feat(linux): add support on Linux for JDK 25 preview in Docker build configurations

• Alternate platforms

  • Gitpod Classic PAYG sunset on October 15th
    • We moved to GitHub codespaces
      • chore: migrate tutorials from GitPod to GitHub Codespaces by gounthar · Pull Request #8488 · jenkins-infra/jenkins.io · GitHub
      • feat: migrate from GitPod to GitHub Codespaces by gounthar · Pull Request #1678 · jenkins-docs/quickstart-tutorials · GitHub
    • We moved to Trixie

• RISC-V

  • We worked on supplying a RISC-V64 recent dockerd, docker, containerd, runc, docker compose set of Debian Trixie packages so anyone can have an up to date docker experience for Jenkins
  • RPM are in the works, even if we know that Fedora and others do prefer podman. We need docker compose for our quickstart tutorials, though
  • Most of the existing RISC-V64 machines use derivatives of Debian or Fedora