Switching from MySQL to MariaDB
MariaDB (https://mariadb.org/) is a replacement for MySQL which is compatible. To test this I replaced MySQL on my recently upgraded Ubuntu 15.04 and found it works! Here is what I did.
First remove mysql but do NOT remove the database when asked if you want i.e. keep the database:
This removed tango-db and tango-accesscontrol too. Don't worry.
I had a problem with the root user not being able to login without doing sudo. This is a known problem and the fix is here http://ubuntuforums.org/showthread.php?t=2275033. The solution is:
I encountered another problem with the tango user password for the the tango database server. The problem was the user could not login. Trying to reconfigure the database user with the command:
The solution was to edit the password in the tango system configuration file /var/lib/tango/.my.cnf
Did you install MariaDb on production or did further tests?
MariaDb is the default package on CentOS 7 and wonder if it is fully compatible.
MAX IV Laboratory