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

I’ve got a similar problem with MySQL on a Mac (Mac Os X Could not startup MySQL Server. Reason: 255 and also “ERROR! The server quit without updating PID file”). After a long trial and error process, finally in order to restore the file permissions, I’ve just do that:

* launch the Disk Utilities.app
* choose my drive on the left panel
* click on the “Repair disk permissions” button

This did the trick for me.

Hoping this can help someone else.