Question

How do you check MySql status via cron

Posted November 28, 2013 18k views
Help, I am trying to setup a cron job that checks mysql status every few minutes and it down restarts it. Currently running the Ubuntu 12.10 WP Stack and have applied the swapfile tutorial too. So if yall can help, please do. ------------------------------------------ # Script mysql-check.sh #!/bin/bash /usr/bin/mysqladmin ping| grep 'mysqld is alive' > /dev/null 2>&1 if [ $? != 0 ] then sudo service mysql restart fi # Added to cron * * * * * sh -x /homesys-checks/mysql-check.sh ------------------------------------------ However it does not work and have know idea why.
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ryan1
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ryan1

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5 answers
media1 November 8, 2014

How about this in your /etc/crontab

# Restart MySQL if it's down
* * * * *    root      service mysql status || service mysql start

Adapted from :
http://superuser.com/questions/611197/auto-restart-mysql-when-it-dies

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kamaln7 November 28, 2013
Are you sure that the script's path is correct? /homesys-checks/mysql-check.sh Shouldn't /homesys-checks be /home/sys-checks?
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pablo December 3, 2013
Check out How To Use a Simple Bash Script To Restart Server Programs.
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joao.guilherme December 15, 2015
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alexdo October 17, 2020

Hello, all

You can create a simple bash script to check if MySQL is running and if not to restart it.

#!/bin/bash

# Check if MySQL is running
sudo service mysql status > /dev/null 2>&1

# Restart the MySQL service if it's not running.
if [ $? != 0 ]; then
    sudo service mysql restart
fi

Run this script every 5 minutes using a cron job like this one:

 */5 * * * * /home/user/scripts/monitor.sh > /dev/null 2>&1

Hope that this helps!
Regards,
Alex

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