Acquia Dev Desktop MySQL database troubleshooting on Mac OSX 10.11 I changed the Acquia Dev Desktop configuration, then when Apache web server and MySQL were restarting MySQL never got back online.

I have enabled the debug option in Acquia Dev Desktop.
The logs don't show any clues:


/Applications/DevDesktop/piscript.log
/Applications/DevDesktop/mysql/data/mysql.err


Workaround

I am using the MAMP mysql in the meanwhile, it has this convenient shell script:

/Applications/MAMP/bin/startMysql.sh
Manually starting the MySQL server:

/Applications/DevDesktop/mysql/bin/mysqld --defaults-file=/Applications/DevDesktop/mysql/my.cnf

Viewing the log:

tail -50 /Applications/DevDesktop/mysql/data/mysql.err

If everything went right you should see the MySQL green dot in the Acquia Dev Desktop GUI.