Changelog

Major enhancement

Add an Appearance category to the setup wizard. pull 8822
Add missing *_fr.properties in win32errors and hudson, lib, and Jenkins resources. Translate hudson/Messages.properties, hudson/model/Messages.properties, and jenkins/model/Messages.properties into French. pull 8594, pull 8595, pull 8578, pull 8577
Update to various UI elements. Style widget panes to match Jenkins. Modernize icons, controls, and fonts. pull 8802, pull 8780, pull 8761, pull 8689, pull 8740, pull 8693, pull 8705

Enhancement

Add telemetry for basic Java system properties describing the environment. pull 8787
Turkish localization fixes for build, login, and user management pages. pull 8631
Fix a minor memory leak in a Remoting log statement. Add forward proxy support for WebSocket. Support custom certificate options for WebSocket. pull 8643
Remove build timeline widget from the build history pages of views, jobs, and agents. JENKINS-60866
More consistently report errors launching outbound agents. pull 8675
Stop recommending JNLP URL in agent launch instructions. pull 8639
Deprecate all configurable options in Launch agent by connecting it to the controller (inbound in JCasC), as these are only useful in conjunction with the deprecated jnlpUrl mode. pull 8762
The jnlpUrl ${JENKINS_URL}/computer/${AGENT_NAME}/jenkinsagent.jnlp argument to the agent JAR has been deprecated. Use url ${JENKINS_URL} and name ${AGENT_NAME} instead, potentially also passing in webSocket, tunnel, and/or work directory options as needed. pull 8773
Removed deprecated and unused class UserProperties. pull 8679
Deactivate the administrative monitor when all previously offline agents are again online. JENKINS-72159
Prepare node monitors to work with configuration as code. JENKINS-64816
Rework node monitor configuration. JENKINS-72371
Allow configuration of disk thresholds globally and for each agent. Improve the warning when disk space is too low. Ensure agents are taken offline when disk space is low. JENKINS-72009
Fail fast when attempting to load a broken plugin that contains the Jenkins test harness in production. pull 8714
Add packaging support for Unix domain sockets. pull 442 (packaging)
Accept all 2xx and 3xx status codes to validate proxy in HTTP Proxy Configuration. JENKINS-72343
Ensure uptime is independent of system clock. JENKINS-72157
Show monitoring data on agent page. pull 8725
Use a notification and Jenkins modal for 'Apply' button failures. pull 8394
BootFailure subclasses can now override the Jenkins startup failure page. pull 8442
Reduce the window of time during which a crash may lead to an inconsistent state on Linux. pull 8815

Bug fix

Restore printing output from println and similar methods for the groovy CLI command (regression in 2.427). JENKINS-72181
Refer to the correct option in the security configuration help text. JENKINS-72222
Restore security configuration help text and remove obsolete help text. pull 8630
Some agent-related objects could be kept in memory after being disconnected and removed from the computer list. pull 8640
Avoid incorrect styling when deleting the first of two shell steps in a job definition. JENKINS-72196
Prevent a deadlock that can occur when loading PermalinkProjectAction.Permalink. pull 8736
Display strings consistently in the requested language when running Jenkins in a JVM with a non-english locale. JENKINS-72449
Fix nested job link in mobile view. JENKINS-72288
Do not show option to copy items when there are no items visible. JENKINS-72443
Display correct time zone in build history. JENKINS-71965
The tunnel property on an inbound agent was inadvertently broken for JCasC usage in 2.437. It remains deprecated and usages should be deleted (regression in 2.437). pull 8793
Fix SimpleScheduledRetentionStrategy on inbound agents. Allow suspended inbound agents to again accept tasks when they are reconnected and the configured scheduling policy is enabled. JENKINS-72370
Remove code that may have caused an agent-side hang under a rare race condition. Remoting PR 713
Reduce the likelihood of thread creation errors on agents. Remoting PR 717

Changelog for 2.440.1