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End of Support of WAR deployment Mode

The standalone mode is now the only mode that is supported. Standalone mode embeds a Tomcat server.

Do Not Override Configuration Files

As stated in the Upgrade guide, do not copy-paste the configuration files (conf directory) from the old version. Update the content of the new files instead.

Technical Debt Plugin

The Technical Debt plugin is no longer compatible with SonarQube 4.0. Technical Debt computation is now directly implemented in SonarQube.


The SQALE plugin has to be manually upgraded to version 2.0 before the SonarQube upgrade.

The RCI Metric is Deprecated

The RCI metric is now deprecated.

Standalone Mode - Move from Jetty to Tomcat 

Changed properties :

  • sonar.web.jettyRequestLogs=../../logs/jetty-yyyy_mm_dd.request.log  =>  replaced by sonar.web.accessLogs.enable=true
  • sonar.web.jetty.threads.min=5  =>  replaced by sonar.web.http.minThreads
  • sonar.web.jetty.threads.max=50  => replaced by sonar.web.http.maxThreads

SonarQube natively supports SSL

See Running SonarQube Over HTTPS.

Measures Filters

All existing filters using the Key criterion have to be updated. For instance, if the value was "*Plugin*" to match all projects containing the word "Plugin", it will have to be updated to "Plugin".

Location of Temporary Files of Analyzer

Temporary files generated by the analyzer used to be stored in the folder. But the cleanup mechanism was not always properly working. SONAR-4748 fixes this issue and the previous non-deleted files located in the folder can be safely removed.


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