We use mysql as a backend for various services. All the relevant databases are hosted on one main server.
Visit the Contacts page to send any database-related problem or query.
How it works
After the mysql service on window was shutdown, we now have three mysql services running: the master being on range and the replicator being hosted on expander. It is only network-accessible on the GNOME servers via the backend network interface. The data is usually presented/obtained to/from the user via web services or interfaces.
Another mysqld was added in July 2015 for Owncloud upgrades to happen. The service is running on the same host as the OC installation. More details on this topic are available HERE.
The root mysql password is available in /root/.my.cnf.