Disabling InnoDB in MySQL
Disabling InnoDB in MySQL helps you save a lot of RAM especially if you don't need it.
If your script/software needs InnoDB, disabling InnoDB will cause issues!
First, open the MySQL config file,
nano /etc/my.cnf
Find the section [mysqld] and add skip-innodb below it. So it looks like this,
[mysqld]
skip-innodb
Save the file and restart MySQL,
service mysqld restart
and then check your RAM usage to see if it has reduced, with the following command,
free -m