Nagios Support Forum

Dear
I am new to the Nagios world and would like to know if anyone can help me with a step-by-step manual on how to install and apply different types of plugins like "Check_printers" or "check_unifi"
Also, know how you do to add as host to Nagios some devices like Printers, Access Point, ESXI Server, MPLS Links, etc.

Thank you very much for all your help

Esteban Tapia

Here's the official documentation:
https://assets.nagios.com/downloads/nag ... n/toc.html

But it can be a little difficult to digest all at once. Here's a good "getting started" video for setting up Windows and Linux machines:
https://www.youtube.com/watch?v=wKXVz_9GDbM

Ahead of doing more technical tasks like installing custom plugins, I would make sure you feel confident in monitoring basic stuff that's very well documented.

As a high level overview, Nagios Core operates primarily off of Nagios configuration objects. The 2 big objects are hosts and services. A host typically represent some single logical "device"; It could be a printer, a VM, a server, a switch, etc. A service typically represents some process/service/application that runs or exists on a host; It could be something that is installed on the host (Apache, IIS, MySQL, Oracle, etc) or some piece of hardware that the host has (hard disk, cpu, memory, network adapter, etc). The most important thing to understand before diving into Nagios Core is the difference between hosts and services. Hosts can exist on their own, or you can define several services under them.

Did you follow any specific documentation for setting up Nagios Core? If not, I would recommend the official walkthrough found here:
https://support.nagios.com/kb/article/n ... ource.html

That should provide some sample configuration files to monitor the local Nagios Core machine. Hopefully those are enough to get you started, but if not you're welcome to ask specific questions here and I am certain they can be answered.

Thanks @mcapra for outlining such great resources.

I'll just add to this and say there are MANY plugins also available on the Nagios Exchange
http://exchange.nagios.org/