Sometimes MySQL seems to have trouble starting up automatically. Even though I have the setting for MySql set to start up automatically via the checkbox “Automatically Start MySQL Server on Startup” in System Prefrences - MySQL. Even pressing the “Start MysSQL Server” button doesn’t work. When this happens I find it useful to start up MySql via the command line. To do this I execute /usr/local/mysql/support-files/mysql.server start Either this is successful and it will say: