Failed to setup Synchrony, turn on debug for stack trace


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Collaborative Editing cannot be enabled as the Synchrony process cannot start. 

atlassian-confluence.log に次のメッセージが出力される。

WARN [synchrony-interop-executor:thread-1] [plugins.synchrony.bootstrap.DefaultSynchronyProcessManager] lambda$startProcess$1 Failed to setup Synchrony, turn on debug for stack trace: /opt/atlassian/confluence/temp/2.1.0-release-confluence_6.5-1a01ab2d.jar (Permission denied)

The filesystem path in the above message will vary, but is the <confluence-install>/temp directory.



  • Confluence Server または Data Center


Confluence does not have the proper permissions to access or execute the Synchrony jar file, or the jar file is missing (if install directory was copied from elsewhere): 



If the jar file is missing, replace it in the above location. Otherwise, correct filesystem permissions using the following steps: 

Do not run Confluence as root, and ensure that the user running Confluence has full read and write access to both the home and install directories. This can be set by running chmod -R with the appropriate permissions, to apply them recursively to each sub folder. An example of the right permissions would be:

chown -R confluence.confluence <confluence-install-folder>
chown -R confluence.confluence <confluence-home-folder>
chmod -R u=rwx,go-rwx <confluence-install-folder>
chmod -R u=rwx,go-rwx <confluence-home-folder>

After fixing permissions, restart Confluence and enable Collaborative Editing. 

Last modified on Mar 10, 2022


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