How To Install Monit on CentOS 6


For those of you who didn’t know, Monit is a opensource process tool for Linux operating system which helps you to monitor system process using web browser and also when ever requires it automatically do the maintenance or repair of particular process in such a way that it can be brought back online. The monitoring can be directly on the command line or on the web. You can assign Monit multiple tasks (not only monitoring), so if a certain service fails the check, Monit can alert or do something about it (try to restart the service for example).

This article assumes you have at least basic knowledge of linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple. I will show you through the step by step installation Monit on CentOS 6.

Step 1. First, you need to enable EPEL repository on your system.

Step 2. Installing Monit.

Step 3. Configure Monit.

Once the installation is complete, edit the main config file to resemble the example below using your favorite text editor and set your own username and password:

Once you’ve configured it, you need to start the monit service to reload the new configuration settings:

Step 4. Configuring Programs Self-Monitoring.

After the initial config is completed, we can configure some of the services we want to monitor. To do this, we will create separate files for every service located within the /etc/monit.d/ directory. Following are some useful configuration examples for monit, that can be very helpful to see how a service is running, where it keeps its pidfile and how to start and stop a service etc:

After creating the desired configuration files, test the control file for syntax errors:

And start monit by simply typing:

Step 5. Accessing Monit.

Monit will be available on HTTP port 2812 by default. Open your favorite browser and navigate to or http://server-ip:2812 and and then enter the credentials you created in /etc/monit.conf.

Congratulation’s! You have successfully installed Monit. Thanks for using this tutorial for installing Monit on CentOS 6 system.

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