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jdk21 upgrade for runtime controllers and agents

May 22, 2025 at 1:00 PM UTC

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Resolved after 3h 0m of downtime. May 22, 2025 at 4:00 PM UTC

[Final Message] migration went well, no impact on production. few fixes to apply with https://github.com/jenkins-infra/jenkins-infra/pull/4143

[Initial Message] Thursday May 22 2025, starting at 17:00 13:00 UTC, all our controllers and there agents will be upgraded to use JDK21 as runtime version instead of JDK17.

This operation expects 1 or 2 restarts per controller https://github.com/jenkins-infra/helpdesk/issues/4121#issuecomment-2890355054.

Last updated: May 22, 2025 at 4:05 PM UTC