Setting up Nagios 4 monitoring

This lesson is a brief overview of the most used parts of the nagios.cfg file. The items covered here are essential to help you with your basic setup of the Nagios system.

This lesson shows you how to make a quick bash script to easily perform the sanity check on the configuration files before you restart Nagios after making changes.

This lesson covers the two step process for adding users into the Nagios system. You first need to add them to Apache. Then you need to add them in as a contact into the Nagios configuration.

The more hosts you need to deal with the more complicated setup becomes. And making changes after the fact can become a nightmare. Using templates in the templates.cfg file will help streamline and simplify management of your environment.

You need to define every host that needs to be monitored by Nagios into a configuration file. This lesson shows how to set up files for listing and configuring the hosts themselves in a file. With this way of setting up Nagios you would define the services for the servers and the hostgroups in separate files.

When you work through the Nagios course you might find that you want to set up a number of servers for the Nagios server and client systems for it to monitor. An easy way to do that is to create them using Amazon AWS EC2 instances. This lesson goes over the basics of how to set up a Linux instance on the AWS cloud. 

One of the challenges of learning something like Nagios is having enough servers to really put together a good lab environment to learn. But with AWS it is very easy to put up a system with multiple computers so you can really practices your skills. This lecture helps you learn the basics of setting up a Windows server on AWS.