MySQL does not start when upgrading OSX to Yosemite or El Capitan

Question

I know similar questions exist, such as MySQL with MAMP does not work with OSX Yosemite 10.10. However, I do have MAMP, nor XAMPP installed on my computer.

When I tr

Answer 1

You just need to create the user mysql (mysql installation script creates _mysql)

sudo vipw

duplicate line that contains _mysql

Change for the duplicated line _mysql to mysql

sudo /usr/local/mysql/support-files/mysql.server start
Starting MySQL
.. SUCCESS!