Adding a homebuilt warning light to your data center


Article from Issue 92/2008

A clever combination of Nagios and a doityourself traffic lights lets you know how your network is feeling.

If you need to manage a large number of computers and services, Nagios is an excellent option. Nagios monitors computers, network connections, and servers, displaying the current health state of a web interface with the colors green (okay), yellow (warning), and red (critical). It is a pity that the web interface is so unobtrusive. If everything is quiet on the network front, an administrator can easily close the browser window and overlook the Nagios warning messages in the general flood of email traffic. One day, I decided there must be a better way. Luckily, Nagios is very easy to adapt and extend. With a little scripting and some cheap electronic hardware, I built a simple traffic light that can sit on top of a switch, cabinet, or desk to show the current network status.

Buy this article as PDF

Express-Checkout as PDF
Price $2.95
(incl. VAT)

Buy Linux Magazine

Get it on Google Play

US / Canada

Get it on Google Play

UK / Australia

Related content

  • Nagios Workshop

    Nagios monitors your network and provides early warning for problems with hosts and services.

  • Perl: Nagios Plugins

    You can build a plugin in Perl to harness the power of the Nagios monitoring tool.

  • Network Monitoring Intro

    If you can’t monitor everything yourself, why not let your computers watch your computers? This month we examine some practical techniques for network monitoring.

  • Leaving Nagios

    Many enterprises use the free Nagios monitoring solution; some would prefer to change to something else. We talked to people who switched to find out how they fared.

  • NagVis

    Want a topside view of possible problems? NagVis is an easy tool for visualizing the status of your network.

comments powered by Disqus
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters

Support Our Work

Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.

Learn More