Learning Nagios 3.0 is a comprehensive configuration guide to monitor and maintain your network and systems. It is a practical guide to setting up the Nagios 3.0 open source network monitoring tool, installing and configuring Nagios 3 on various operating systems. It will help understand system monitoring and how Nagios works.

Nagios is a popular open source computer system and network monitoring software application. It watches hosts and services, alerting users when things go wrong and again when they get better.

This Nagios Mini-Course shows you how to configure Passive Checks from clients which are sent to a central Nagios Server. Passive checks use the NSCA or Nagios Service Check Adaptor which is an add-on for the Nagios Server. You can write custom scripts to evaluate applications and send the output to a central Nagios Server.

Recently, Nagios, an open source application for network, server and application monitoring, has been the subject of a dispute. The operators of the French Nagios site nagios-fr.org claimed that Nagios Enterprises was forcing them to give up the domain. The H talked to Ethan Galstad CEO of Nagios Enterprises about what had happened and asked how he plans to take the Nagios community forward

So you have your Nagios server installed...now what. Monitoring devices on your network is typically a three step process. Once you get used to following these steps you will begin setting many new devices to monitor with this great tool Nagios.

Nagios provides a monitoring option to evaluate routers and switches using SNMP, Simple Network Management Protocol. This course will show you how to set up Nagios and specifically how to locate the information you want to monitor with SNMP on a Cisco router. This is a Free Course available to anyone.

This guide will describe howto get it running in op5 Monitor. op5 Monitor is vanilla Nagios with some addons so it should be no problem to follow this guide in a Nagios environment

As an administrator you may be face with the task of constantly monitoring web servers, mail servers, ftp servers, etc. Basically, your organization wants all of their servers up and running all of the time. Nagios 3 offers an easy set up and configuration to make this happen so that you can monitor multiple servers and have Nagios alert you to problems.

As a system administrator, one often have to do repetitive tasks such as checking for free disk space, check mail queues and monitor critical services. If there are only a handful of servers, this task may not be very intimidating, but there are many times when there are many servers to monitor, or just for the sake of automation. This is where Nagios comes in.