In the previous post Nagios 3.0 Jumpstart guide , I explained the overview, installation and configuration of Nagios 3.0 on Red Hat Server. In the following three chapters, I’ll explain how to monitor a remote Linux host and the various services running on the remote host.  Also, please refer to all our Nagios articles.
 
I. Overview

II. 6 steps to install Nagios plugin and NRPE on remote host.

1. Download Nagios Plugins and NRPE Add-on
2. Create nagios account
3. Install Nagios Plugins
4. Install NRPE
5. Setup NRPE to run as daemon
6. Modify the /usr/local/nagios/etc/nrpe.cfg

III. 4 Configuration steps on the Nagios monitoring server to monitor remote host:

1. Download NRPE Add-on
2. Install check_nrpe
3. Create host and service definition for remote host
4. Restart the nagios service

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Let us discuss the overview, installation and configuration of Nagios, a powerful open source monitoring solution for host and services.
 
I. Overview of nagios

II. 8 steps for installing nagios on Linux:

1. Download the nagios and plugins
2. Take care of the prerequisites
3. Create user and group for nagios
4. Install nagios
5. Configure the web interface
6. Compile and install nagios plugins
7. Start Nagios
8. Login to web interface

III. Configuration files overview
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Let us review the following 5 basic command line usage of the ssh client.

1. Identify SSH client version
2. Login to remote host
3. Transfer Files to/from remote host
4. Debug SSH client connection
5. SSH escape character usage: (Toggle SSH session, SSH session statistics etc.)

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