See/monitor: http://bugs.mysql.com/bug.php?id=74434
It appears they're working on a fix, in the meantime, you can set MySQL to automatically start on system start by:
- Put the adjoining file
com.oracle.mysql.plist
into/System/Library/LaunchDaemons
- Adjust
[machinename]
in line 17 of the plist accordingly. - Set the perms to root:wheel and 0644.