NagiosGraph is an addon for Nagios that take the performance data from Nagios services and create graphs that you can use to see your network health. Install NagiosGraph First we will install the package prerequisites: Next we will download NagiosGraph (download the lastest version) Next we will extract Nagios Graph…
NRPE is a client side application for executing Nagios plugins. The Nagios server communicate with remote system over TCP Port 5666 using this plugin. NRPE must be installed on all the remote systems needs to monitor by Nagios server. Nagios server sends instruction to the NRPE server using check_nrpe plugin. Install Nagios…
In this tutorial, we’ll walk you through each step of installing Nagios Core on Ubuntu 22.04. You will have a Nagios setup that is fully operational by the end of this article, which will make it easier for you to keep a close eye on your network and systems. Update…
One common configuration issue with Nagios 3 running on Ubuntu is getting the Service Commands menu to work correctly in the web portal. By default, it is visible in the UI, but disabled on the server backend. In Ubuntu, you will recieve the cryptic error Could not stat() command file pointing to /var/lib/nagios3/rw/nagios.cmd. This can…
There is a known error when your Nagios Monitoring Server is running Ubuntu 16.04 and you are trying to monitor a server with a newer version of Ubuntu like Ubuntu 18.04. In Ubuntu 18.04, NRPE uses a 2048 bit DH key, but in earlier versions of NRPE use a 512…
By default the nagiosadmin account is one you login to the web interface with. To add your own users, you can follow these commands: Add user to the htpasswd file Next edit the Nagios cgi.cfg file to grant the relevant permissions: I wanted to same level of access as nagiosadmin,…