Nagios Integration / Support
This article has some good detail on setting up Nagios but the installation requires running just a couple of commands:
sudo apt-get update sudo apt-get install -y nagios3
When installing Nagios for use with QuantaStor note that you must adjust the default port number for apache to something other than port 80 which conflicts with the QuantaStor web management service. For more information on changing the apache port numbers, please see this article which has more detail. To change the port numbers edit '/etc/apache2/ports.conf' and modify the default port number of 80 something like to 8001 and 443 to 4431. Finally, restart apache with 'service apache2 restart'.
After the port number has been changed you can then access Nagios via your web browser at the new port number like so: