'com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException' when Installing Confluence on MySQL on OS X 10.4 Due to MySQL Networking Configuration
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Note that this knowledge base article was created for the Data Center version of the product. Data Center knowledge base articles 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
Confluence does not start when connecting to MySQL. The following appears in the atlassian-confluence.log:
com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException: Server connection failure during transaction. Due to underlying exception: 'java.net.ConnectException: Connection refused'.
Cause
MySQL is running with the --skip-networking option.
Resolution
On OS X 10.4 Server, the MySQL Manager program turns off networking by default. This needs to be turned on in /etc/mysqlManager.plist or in the MySQL Manager (if that option is available).