OS: Ubuntu 19.04

When the MySQL server is installed, it automatically started with the OS. It slows the speed of OS loading. But the computer is for personal, not a DB server. I just want to start it when I need.

Check the MySQL server's status and stop it.

$ service mysql status

$ service mysql stop

Disable autostart:

$ sudo systemctl disable mysql

When you need it, it can be started by:

$ service mysql start

References:

• https://askubuntu.com/questions/57381/how-to-stop-mysql-from-running-at-boot-time
• https://askubuntu.com/questions/833094/how-can-i-disable-autostart-of-mysql-server