Changelog

Enhancement

Switch Linux installers from System V init to systemd. JENKINS-41218
Update the bundled Matrix Project plugin from 1.18 to 1.20. pull 6180, JENKINS-67674 , 2022-01-12 security advisory
Update bundled Display URL API plugin to prevent issues starting the mailer plugin for offline installations. JENKINS-67885

Bug fix

Keep the same height when dragging and dropping a component (regression in 2.277). JENKINS-67496
Correctly render expandable text boxes into multiple lines (regression in 2.197 and 2.176.4). JENKINS-67627
Show correct feature name in tooltips of help links (regression in 2.179). JENKINS-67662
Launch only one agent to satisfy cloud agent requests that use label expressions. JENKINS-67635
Truncate long build names again (regression in 2.332). JENKINS-67689
Overwrite grey balls icon with the modern "not built" status. JENKINS-67753
Render the question mark on the new help button only once so that it is not shown twice, even while using different themes. pull 6233
Update remoting from 4.11 to 4.12 to allow Java web start agents to connect (regression in 2.318). pull 5983, JENKINS-67000 , Remoting 4.11.2 changelog, Remoting 4.12 changelog
Restart systemd service when the controller exits unexpectedly. JENKINS-56219
Restart the Jenkins service after plugin updates on Debian 11 (bullseye). JENKINS-65809

Major enhancement

Always enable the agent-to-controller security subsystem. Remove the admin-customizable allowlists for callables and file paths. Remove the ability to access some files on the controller from agents. Use the Plugin Manager to upgrade incompatible plugins. pull 5885, JENKINS-67173 , the issue tracker
Upgrade the Guava library from 11.0.1 (released on January 9, 2012) to 31.0.1 (released on September 27, 2021). Plugins have already been prepared to support the new version of Guava. Use the Plugin Manager to upgrade all plugins before and after upgrading Jenkins. pull 5707, JENKINS-36779 , JEP-233, Guava web site, Guava 31.0.1 changelog

Enhancement

Modernise the table design. Add support for Ionicons. Improve the usability and layout of the 'Plugin Manager' page with better controls and a 'Report an issue' link for each plugin. Update the 'New view', 'New node', 'About', 'System Info', and 'Log Recorder' pages. pull 5851, pull 5925, pull 5842, pull 6055, pull 5916, pull 5358, JENKINS-65113
Allow the plugin manager to upload by URL in addition to upload by file name. JENKINS-4814
Improve visualization of the 'Environment Variables' page. pull 6096
Improve artifact list readability in dark theme. pull 5889
Use CSS animation for console progress. pull 5871
Remove support for plugins written in JRuby or Jython. JRuby support has been removed from the Stapler web framework used in Jenkins core. Plugins written in JRuby and Jython have not been distributed by update center since January 22, 2022. pull 6103, JEP-7: Deprecation of Ruby and Python plugin runtimes, Deprecating non-Java plugins (blog post), Stapler repository, JRuby project
Remove support for setting the Jenkins home directory via Java Naming and Directory Interface (JNDI). pull 6111
Developer: Provide a stable version of ObjectWebASM (currently 9.1) on the classpath. pull 5524, ObjectWebASM web site
Developer: Use the upstream version of AntClassLoader without custom patches. pull 5856

Changelog for 2.332.1