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Installing Monit On Linux CentOS Server

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monit is an open source software that monitor services on your server. It can restart if any of the service go down.

Download latest version of file from

cd /usr/local/src
tar -zxvf monit-5.0.3.tar.gz
cd monit-5.0.3
make install

Copy control file to /etc

cp monitrc /etc/

Edit /etc/monitrc

vi /etc/monitrc

At the end of the file add or uncomment

include /etc/monit.d/*

Now to monitor Apache, create a file /etc/monit.d/apache

vi /etc/monit.d/apache

Add following content

check process httpd with pidfile /var/run/
group apache
start program = "/etc/init.d/httpd start"
stop program = "/etc/init.d/httpd stop"
if failed host port 80 protocol http
   and request "/phpinfo.php"
   then restart
if 5 restarts within 5 cycles then timeout

You can change

and request "/phpinfo.php"

To any file on your web server. I do have a phpinfo file on my server, so i used it.

Some says phpinfo.php is a security risk, to me it is only a security risk if you run vlunerable application on your web server. If you use update software on your server, some one seeing your phpinfo is not a security issue.

To run monit, edit /etc/rc.local

vi /etc/rc.local


/usr/local/bin/monit -d 60 -v -c /etc/monitrc  -p /var/run/ -l /var/log/monit.log

Posted in Linux

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