Install MySQL using Homebrew, open the terminal an type in:
$ brew install mysql
Start MySQL server by typing
$ brew services start mysql
Secure the server by typing
$ mysql_secure_installation
When using brew services start mysql the server will re-start at OS reboot, if you run:
$ brew services stop mysql
This will stop MySQL and not re-start after a OS reboot.
You can also avoid this by typing:
$ mysql.server start
This will start MySQL and keep it running until computer shutdown or by typing:
$ mysql.server stop
Connect to server
$ mysql -u root -p