keep-mysql-running.sh

#!/bin/bash

PATH=/usr/sbin:/usr/bin:/sbin:/bin

if [[ $(service mysql status | grep running | wc -l) != 1 ]];
then
	echo "$(date "+%Y-%m-%d %T")"  >> /root/keep-mysql-running.log
	echo "$(service mysql status)" >> /root/keep-mysql-running.log
	service mysql start            >> /root/keep-mysql-running.log
fi

----------------------------------------------------------------------

#!/bin/bash

PATH=/usr/sbin:/usr/bin:/sbin:/bin

if [[ $(ps -ef | grep "/usr/sbin/mysqld" | grep -v "grep" | wc -l) != 1 ]];
then
	echo "$(date "+%Y-%m-%d %T")"  >> /root/keep-mysql-running.log
	echo "$(service mysql status)" >> /root/keep-mysql-running.log
	service mysql restart          >> /root/keep-mysql-running.log
fi

Run this on a cron job to start mysql if it ever detects it as not running:

# Keep MySQL running
* * * * * /root/keep-mysql-running.sh