The Update Center is the place for keeping the Sonar platform up to date. It allows to:
To take effect, most actions taken in the Update Center (updating a plugin...) will require Sonar to be restarted. The Update Center is only accessible to administrator: Settings > System > Update Center.
This tab displays the list of installed plugins and the list of system plugins. System plugins are the one that are built in Sonar core. They cannot be updated nor uninstalled. Non-system plugins can be uninstalled by clicking on the 'Uninstall' button:

This tab displays available plugins for your Sonar version. They are grouped by category such as 'Additional Languages', 'Visualization/Reporting', etc. and can be installed by a simple click on 'Install':

This tab shows new versions of installed plugins. When an update is available, it can be installed by a simple click on 'Upgrade to...':

This tab shows new version available for Sonar and path to migration in terms of plugins update (plugins need to be upgraded, uninstalled, etc.) to the new version of Sonar. Installation of the new Sonar version is manual.

When taking an action in the update center (installing, updating or uninstalling a plugin), a yellow area appears on each tab. The area contains pending operations that will be executed when restarting Sonar. Pending operations can be canceled until Sonar is restarted:

Update Center uses HTTP connection to external servers to provide these services. If Sonar is located behind a proxy, additional information must be provided in the 'sonar.properties' configuration file:
http.proxyHost=<your.proxy.host> http.proxyPort=<yout.proxy.port> |