Fix for Sonar Breaking After Upgrade

Upgrade is not supported. Please use a production-ready database.

If you’ve ever seen this message after a yum update, you know how infuriating it can be. I was sure I was already using mysql rather than the default h2 database, but everything indicated that was the problem.

It turns out the error was caused when they replaced /opt/sonar/conf/sonar.properties with a default configuration. If you vimdiff it against /opt/sonar/conf/sonar.properties.rpmsave you should see the issue.

Let me know if this helps.