Nagios, called NetSaint in its early versions, is a best of class, industry standard, open source (yes, free!) and fully extendable tool for monitoring networks. With surprising little effort, you can ...

The free and open-source network monitoring software Nagios Core has a long and strong reputation, providing the base for other monitoring suites – Icinga, Naemon and OP5 among them – and a history ...

Monitoring the performance of Linux systems is a critical task for administrators aiming to ensure reliability, efficiency, and security. When it comes to robust and scalable monitoring, Nagios ...

Nagios is by far one of the best solutions for monitoring just about everything on a server, and it’s excellent API system means that anything it doesn’t include out of the box can be written in just ...

If you are using Nagios to monitor remote servers, you have more than one method to execute checks, including the use of the check_by_ssh plugin. Vincent Danen tells you how to set up this plugin and ...

I'm a big fan of the Nagios network monitoring system and rely on it to tell me if something goes wrong with the systems for which I am responsible. I have made a large investment in time configuring ...