Bamboo fails to start - Duplicate plugin found
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
After installing Visual Studio 2012 on the Bamboo server (Windows 2008 R2) and rebooting, the Bamboo service is no longer available.
The following appears in the Bamboo logs:
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2013-02-19 15:23:30,823 FATAL [WrapperSimpleAppMain] [UpgradeLauncher] Failed to initialise Bamboo container
com.atlassian.bamboo.configuration.ConfigurationException: Failed to start Bamboo
at com.atlassian.bamboo.upgrade.UpgradeLauncher.initialiseBambooContainer(UpgradeLauncher.java:195)
at com.atlassian.bamboo.upgrade.UpgradeLauncher.upgradeAndStartBamboo(UpgradeLauncher.java:93)
at com.atlassian.bamboo.upgrade.UpgradeLauncher.contextInitialized(UpgradeLauncher.java:40)
at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:733)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:233)
...
at org.tanukisoftware.wrapper.WrapperSimpleApp.run(WrapperSimpleApp.java:240)
at java.lang.Thread.run(Unknown Source)
Caused by: com.atlassian.plugin.PluginParseException: Duplicate plugin found (installed version is the same or older) and could not be unloaded: 'com.atlassian.bamboo.plugin.dotnet'
at com.atlassian.plugin.manager.DefaultPluginManager.addPlugins(DefaultPluginManager.java:691)
at com.atlassian.plugin.manager.DefaultPluginManager.init(DefaultPluginManager.java:180)
at com.atlassian.bamboo.container.BambooContainer.init(BambooContainer.java:172)
at com.atlassian.bamboo.container.BambooContainer.initialise(BambooContainer.java:137)
at com.atlassian.bamboo.upgrade.UpgradeLauncher.initialiseBambooContainer(UpgradeLauncher.java:190)
... 18 more
Caused by: com.atlassian.plugin.PluginException: Plugin is not uninstallable: com.atlassian.bamboo.plugin.dotnet
at com.atlassian.plugin.manager.DefaultPluginManager.ensurePluginAndLoaderSupportsUninstall(DefaultPluginManager.java:602)
at com.atlassian.plugin.manager.DefaultPluginManager.unloadPlugin(DefaultPluginManager.java:582)
at com.atlassian.plugin.manager.DefaultPluginManager.uninstallNoEvent(DefaultPluginManager.java:537)
at com.atlassian.plugin.manager.DefaultPluginManager.updatePlugin(DefaultPluginManager.java:803)
at com.atlassian.plugin.manager.DefaultPluginManager.addPlugins(DefaultPluginManager.java:685)
... 22 moreCause/Resolution
The problem is related to the Bamboo .Net plugin. Make sure that there is only one dotnet plugin installed for Bamboo. Try to remove the BAMBOO_INSTALL/webapp/WEB-INF/lib/atlassian-bamboo-plugin-dotnet-3.10.jar plugin, restart the Bamboo instance and add the plugin back.
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