Monit is a opensource monitoring tool on Unix system. The simplest use case would be restarting your service if there is failure.
On Ubuntu, simply run apt-get to install Monit.
sudo apt-get install monit
The Monit folder is at /etc/monit. Before you can read anything from Monit, create the /etc/monit/conf.d/monit.conf in order to setup the Monit web interface.
set httpd port 2812 and use address localhost allow localhost
Restart the Monit.
Verify if it is working by running monit status.
root@eureka:/etc/monit/conf.d# monit status The Monit daemon 5.3.2 uptime: 3m System 'system_www.eureka.com' status Running monitoring status Monitored load average [0.00] [0.01] [0.05] cpu 0.0%us 0.0%sy 0.0%wa memory usage 173788 kB [28.7%] swap usage 128344 kB [12.2%] data collected Sun, 29 Jun 2014 14:52:32
You can also access the Monit web portal by opening http://localhost:2812/ in your browser.