Platform SIG April 7, 2026

[MarkEWaite (Mark Waite)]

2026-04-07T15:00:00Z

2026 04 07 Jenkins Platform SIG

Apr 7, 2026 - Latest Jenkins LTS, container updates

Attending: Mark Waite, Bruno Verachten, Herve Le Meur

Agenda

• Meetings moved to every 4 weeks, earlier time
  • Proposal to move immediately after Jenkins infra team meeting
  • Agreed, Mark will move the meeting
• Windows (MSI) installer signing certificate expires on May 16 - Mark Waite
  • Mark meets with Linux Foundation team members today at 18:30 UTC to discuss their MSI signing service
  • Unlikely to sign with new cert in 2.555.1 (April 15); plan for .2 release (mid-May)
  • lemeurherve wanted to join but schedule incompatible
• Java 17 and 21: status update
  • Java 17 support in weekly ended with Jenkins 2.545 (Jan 5, 2026)
  • Java 17 support in LTS ended with Jenkins 2.541.3 (Mar 18, 2026) - now fully dropped
  • Cleanup Java 17 remnants merged April 3 (#2287, @MarkEWaite) - in 2.558
• Java 25
  • Over 235 of the top 250 active plugin repositories are now building and testing with Java 25
• LTS updates
  • New LTS baseline: 2.555
    • 2.555.1 RC released April 1, 2026 (RC announcement)
    • Final release scheduled for April 15, 2026 - 8 days away
    • Release lead: Shalini Sudarsan (announcement)
    • First LTS to drop Java 17 support
• Spring Security 7 and Spring Framework 7 - Mark Waite
  • In weekly 2.556 and later, no issues reported
  • LTS in July 2026
  • Spring Security 6.x end of support is June 30, 2026
• Container image updates for the Jenkins controller
  • Two new weekly releases since last meeting:
    • 2.557 (Mar 31):
      • Bump RHEL version to 9.7-1774415752
    • 2.558 (Apr 7, today):
      • Cleanup Java 17 remnants (#2287, @MarkEWaite)
  • No new SSH agent or docker-agent releases since March 24
    • Latest SSH agent: 8.1.0 (Mar 23)
    • Latest docker-agent: 3355.v388858a_47b_33-17 (Mar 21)
• Work in progress on images:
  • Controller:
    • feat(linux): add HEALTHCHECK instruction - documentation
    • Add environment variable substitution for reference configuration files
    • feat: Add custom root CA certificate import support - documentation
    • chore: don’t use JENKINS_REPO for tags and publication
  • Docker-agent:
    • chore(windows): build from Windows 2025 agents by default - more work needed to build older images on new OS
    • chore(windows): run each JDK tests in parallel
  • Docker-ssh-agent:
    • feat: add Windows 2025 images for docker-ssh-agent
  • Deprecation and archival of jenkinsci/docker-inbound-agents
    • Accepted in Jan 13 meeting. Repository still not archived.
  • Support for Windows 2025 agents
    • Helpdesk ticket is closed
    • Windows 1809 images have been dropped across all three repos
    • Optimise cost and maintenance by merging Windows 2022 and Windows 2025 templates - pending bandwidth
  • Drop Windows 2019 support - in progress (infra)
    • Still required for the winp build process