Sample my.cnf config file for Percona MySQL where 4GB RAM is available for MySQL

Percona MySQL example my.cnf file for 4GB available RAM for MySQL. See current usage by running :

/usr/sbin/mysqld --verbose --help

Then load this file from :

/etc/mysql/my.cnf

Then reload MySQL.

IMPORTANT : "4GB available RAM for MySQL" means server minimum has 12 GB physical RAM for LAMP server and 8 GB physical RAM for dedicated physical server