Problems with plugins (apps) after Confluence upgrade due to plugin cache

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Published on September 7th 2021 - Listed in Atlassian Linux

If you experience issues with plugins (apps) in Atlassian Confluence after an upgrade, the problem could simply be caused by an old cache.

Symptoms are that updating or installing a plugin doesn't work and the plugin will stay disabled (greyed out).

An error such as the following is then shown in the atlassian-confluence.log:

2021-09-07 10:47:08,172 ERROR [ThreadPoolAsyncTaskExecutor::Thread 55] [plugin.osgi.factory.OsgiPlugin] onPluginContainerFailed Unable to start the plugin container for plugin 'com.atlassian.troubleshooting.plugin-confluence'
 -- url: /confluence/rest/plugins/1.0/ | referer: | traceId: 74f0243fc43e24a5 | userName: admin
org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from URL [bundle://325.0:0/META-INF/spring/spring-context.xml]; nested exception is java.lang.IllegalStateException: The bundle is uninstalled.

To solve this, the plugin cache needs to be cleared.

1. Stop Confluence

root@confluence:~# /etc/init.d/confluence stop

2. Change into the CONFLUENCE_HOME directory (default: /var/atlassian/application-data/confluence)

root@confluence:~# cd /var/atlassian/application-data/confluence

3. Backup the plugin cache directories (e.g. to /tmp):

root@confluence:/var/atlassian/application-data/confluence# mkdir /tmp/plugins-cache-backup
root@confluence:/var/atlassian/application-data/confluence# cp -Rp bundled-plugins/ plugins-cache/ plugins-osgi-cache/ plugins-temp/ /tmp/plugins-cache-backup/

4. Remove the plugin cache directories:

root@confluence:/var/atlassian/application-data/confluence# rm -rf bundled-plugins/ plugins-cache/ plugins-osgi-cache/ plugins-temp/

5. Start Confluence

root@confluence:~# /etc/init.d/confluence start

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