Setting up NRPE on remote client hosts

The Nagios Remote Plugin Executor (NRPE) is a system daemon that uses a special client-server protocol and should be installed on all client hosts that you want to monitor via your Nagios server remotely. It allows the central Nagios server to trigger any Nagios checks on these client hosts securely and with low overhead. Here, we will show you how to set up and configure any CentOS 7 client to use NRPE; if you've got more than one computer in your network that you want to monitor, you need to apply this recipe for every instance.

Getting ready

To complete this recipe, you will require a computer other than your Nagios server with an installation of the CentOS 7 operating system and root privileges, which you want to monitor, and which needs a console-based text editor of your choice installed on it, along with a connection to the Internet in order to facilitate the download of additional packages. This computer needs to have access to our Nagios...