Monit also sends customizable alert messages as notifications regarding error conditions. An easy-to-configure control file, which is based on a token-oriented, free-format syntax, is used for controlling Monit. Just as an example, Monit can start a process if it ceases to run, restart a process if it fails to respond, and halt a process if it uses too many resources. Monit not only undertakes automatic repair and maintenance, but also executes meaningful casual actions when error situations arise. Start program = "/etc/init.Monit is a utility to designed to manage and monitor filesystems, directories, files, programs, and processes over a UNIX system for changes in size, checksum, and timestamp. Stop program = "/etc/init.d/mysql stop" Nginx check process nginx with pidfile /var/run/nginx.pid Start program = "/etc/init.d/mysql start" Stop program = "/etc/init.d/httpd stop" MySQL check process mysqld with pidfile /var/run/mysqld/mysqld.pid Start program = "/etc/init.d/httpd start" with timeout 60 seconds (Make sure to change the red parts with your own values, the “pid” files locations for each software could be different) Apache check process apache with pidfile /run/httpd.pid in this section, we are going to configure Monit to prevent your services from being stopped. You can scroll down the “monitrc” file to see the examples of configurations, but all of them are commented, so leave them be and add your own configurations at the very end of the file. Now it’s time to set some services and processes to be monitored by Monit. Now you can visit your Monit web interface at the following address: IP_OR_DOMAIN:2812 Make sure to change your username and password to something strong like below: set httpd port 2812 andĪllow MonitAdmin: 5PbTLadz # require user 'MonitAdmin' with password '5PbTLadz' #allow localhost # allow localhost to connect to the server and #use address localhost # only accept connection from localhost Use address localhost # only accept connection from localhostĪllow localhost # allow localhost to connect to the server andĪllow admin:monit # require user 'admin' with password 'monit'īy default, Monit only listens on “localhost” and only answers to “localhost” as well, So if you want to be able to connect to your Monit interface from anywhere, you have to comment the following lines: set httpd port 2812 and In the Monit global configuration file, scroll down to the following block: set httpd port 2812 and You can set your preferred Email address to get alerts and reports from Monit with the following command: set mailserver port 25 set alert Initial Configurationįor doing some configuration you need to open your Monit global configuration file with the command below: nano /etc/monitrc Enable the web interface You can check your Monit service status with the command below: systemctl status monit Automatic email alerts sent at event triggers.įor installing Monit you need to add the EPEL repository first: yum install epel-releaseĪfter that you can install Monit easily using: yum install monitĪfter the installation process is finished, you can execute the following commands to start Monit service and make it run at startup: systemctl start monit systemctl enable monit.Monitoring of running services, and the ability to start, kill or restart.Capability to act on out-of-bounds values for CPU, RAM, disk, file size, age and more.Automatic process maintenance in a lightweight package.Monit conducts automatic maintenance and repair and can execute meaningful causal actions in error situations, for example, Monit can prevent your services from getting stopped.īelow are some of the main benefits of using Monit: Monit is a free open source utility for managing and monitoring, processes, programs, files, directories and filesystems on a UNIX system.
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