Nagios - Open Source Network Monitoring

Nagios Logo Nagios is an Open Source solution to monitor complex IT infrastructures. Nagios can be used to perform alive checks to ensure the availability of networked systems. It is also possible to use Nagios for performance and capacity analyzes.

I write about Nagios cause I use it since several years. Over the time I collected much knowledge about Nagios and the surrounding projects. I contribute actively to the community writing and publishing plugins and maintaining the NagVis addon.

You like to read more about Nagios? You will find my latest posts regarding Nagios below. Also take a look at the right for my Nagios projects. Maybe you're interested to rummage in the Nagios Knowledge base.

Latest activities about Nagios


Install linux check_mk_agent on QNAP 495 NAS

The QNAP 495 NAS is running a custom linux operating system provided by QNAP. First we need make the xinetd available on the qnap device. It is possible to install an xinetd package using optware. This is a quick walk through the installation steps: If you do not have installed optware yet you need to […]

Filed under: Nagios

Mixed release notes (NagVis 1.6.4, nagios_downtime.vbs 0.8.3)

It’s been a while since my last post. I have so many different projects running that I had no time to write about them. So you have to be content with this short note. I just released a new version of the windows nagios downtime script (nagios_downtime.vbs). It has mainly been powered by a couple […]

Filed under: Nagios

NagVis 1.6 released

I must admit, I am a little late with these “news”. But in case you did not realize it yet: NagVis 1.6 has been released as new stable release of NagVis. It replaces the version 1.5.10. NagVis 1.6 comes with a lot of new features and improvements. If you are using older versions of NagVis […]


Livestatus Slave 1.1 released

After some feedback from users I made several changes to the livestatus slave code and released it as version 1.1. Here is the list of changes: FIX: Fixed config typo for TCP sockets Query types and tables are now configurable using the config option queryTypes and queryTables Added optional support for JSONP requests It is […]

Filed under: Nagios

Nagios is dead? No, it is not!

There is not much progress in Nagios development – it is visible since a couple of years. This is what it looks like when one checks out the Nagios Core sources, mailing lists and so on. This could lead us to the question: Is there something happening under the surface which we don’t see? Maybe one day a brand new Nagios Core 4.x is released as big bang and from one day to the other everything changes? Well, I don’t think so.

But why do we care about the development of the Nagios Core so much? Do we really miss important features there?


nagstamon 0.9.5 released

Nagstamon has been released in version 0.9.5. I haven’t written about Nagstamon before, so for a brief introduction: It is a program to display Nagios status information on your desktop in form of lists. The lists are mostly equal to the “problem lists” in Nagios. Nagstamon comes with a graphical user interface which is based on GTK. Nagstamon is highly portable, it works on Linux with KDE/Gnome, Windows 2000 to Windows 7, Mac OS X, and so on. Continue reading to see why I am writing about this release…

Filed under: Nagios

OMD 0.46 release – The modern way managing Nagios installations

You think Nagios is rusty old stuff? Certainly not! Great things are happening around Nagios. One of these brand new innovations is OMD – The Open Monitoring Distribution. It has been released in version 0.46 yesterday. OMD is THE way of installing and managing Nagios installations these days. It brings you multi instance setups, one […]

Filed under: Nagios

OMD 0.44 released

Oh dear. So many new thing but simply not enough time to write about it…

I wanted to drop a short note about the current OMD version. It has been released several days ago but I think it’s worth to write about it since OMD is a very nice solution for installing and updating Nagios plus addons easily.


OMD – The Open Monitoring Distribution based on Nagios

OMD is NOT yet another linux distribution! OMD stands for nothing else than open monitoring distribution.

The OMD is package based on Nagios and a collection of Nagios plugins/addons which are bundled together to give a quick start to Nagios & Co. The difference to other tries to set-up such a project is that this approach is completely open – no real limits. This will be the next big step in evolution of Nagios!

You are interested? Take a look at the full article..


Check_MK with a lot of new upcoming checks

After writing a lot of new checks for Check_MK the last days I have to put my fingers in a bucket of ice water to get them cooled down again. With the checks Check_MK can now monitor a lot of new different new systems. And the best is: Check_MK will find the systems to be […]