Erstes Naemon Release

Der als Nagios 4 Nachfolger angetretene Fork “Naemon” veröffentlichte heute sein erstes Stable Release mit der Nummer 0.8.0.
Aber was macht Naemon nun besser als Nagios?


Author:Sven Nierlein
Tags:monitoring, naemon, Nagios, omd, Thruk



Der Verlag Packt Publishing ist an mich herangetreten und hat mich gebeten, eine Rezension zum soeben erschienenen Buch Icinga Network Monitoring von Viranch Mehta zu schreiben.

Eigentlich hatte ich keine Zeit, aber wenn mir jemand mit „Keeping in mind your knowledge in this subject and having looked at your contributions, I feel you'd make an excellent reviewer of this book.“ kommt, dann werde ich natürlich schwach.

Das Buch richtet sich an eine Leserschaft, die bisher keinen Kontakt zur Icinga (bzw. Nagios, Naemon oder Shinken) hatte. Linux-Kenntnisse werden aber dennoch vorausgesetzt. Ziel des Autors war es, eine nachvollziehbare (im Sinne von: sofort am Rechner umsetzbar) und möglichst vollständige Anleitung zu erstellen, anhand derer ein Icinga-Neuling (mit ein bisschen Hirnschmalz sind die Schritte aber auch auf die o.g. Geschwister von Icinga anwendbar) in kurzer Zeit ein Basis-Monitoring für seine IT-Landschaft aufsetzen kann.


Author:Gerhard Laußer
Tags:Icinga, linux, Nagios, Shinken

Reguläre Ausdrücke in Perl erlauben die Bildung von Teilausdrücken. Mit runden Klammern kann man bestimmte Abschnitte eines Ausdrucks zusammenfassen, um sie an anderer Stelle oder nach dem Mustervergleich weiterzuverwenden.

$line =~ /Fatal: error (\d+) occured/;
$errorcode = $1;

Bei check_logfiles kann dies benutzt werden, um aus Trefferzeilen die relevanten Teilstrings zu extrahieren und so die Ausgabe des Plugins zu verkürzen.


Author:Gerhard Laußer

A few months ago, Andreas Ericsson, the main developer of Nagios 4, has been kicked from the Nagios Developer Team for personal reasons. So he decided to continue development in a new fork called Naemon. The result so far is quite impressive.


Author:Sven Nierlein
First ConSol FedEx Day

For most employees at ConSol, today is the last day before their Christmas vacation. Eight of us took that opportunity and organized our first FedEx day:
During the full day event, we formed small teams and worked on innovative projects we are enthusiastic about.
At the end of the day, we had small presentations showing the results to the company.

In this blog post we’d like to share the projects we came up with:

Infinispan Cluster on Raspberry Pis

There seem to be a lot of interest in building Raspberry Pi clusters for
One of the teams took the chance and built our own, with five Pis running an Infinispan distributed cache.
It turns out that having a real hardware cluster yields different results than testing Infinispan locally.
While clean shutdowns and startups are no problem, unplugging and plugging network cables is a much greater challange to the Infinispan infrastructure.
The Raspberry Pi hardware is sufficient to run embedded Infinispan instances, the JBoss based distributions don’t seem to fit well with the hardware.

Kiosk systems based on Raspberry Pis

The Raspberry Pi and a large screen is all that is needed for building an information kiosk.
One of the teams built a kiosk for our entrance hall, showing the current event schedule for our meeting rooms.
Access to the event database was implemented as a Spring application, on the front-end side
HTML5 and JavaScript magic was used to visualize the data.

Evaluating the Ceylon Programming Language

Ceylon 1.0.0 was released recently, and one of the teams took the chance to make some first experiences with the new programming language.
Ceylon runs on the JVM, and can also be compiled to JavaScript. It comes with an Eclipse-based IDE, which is, however, not very easy to run.
The strong type system enables a lot of tool support, but sometimes also results in errors that are hard to understand for the novice.

Video Recordings for the ConSol Academy

The ConSol academy is a company event where employees share their knowledge with their peers. One team used the FedEx day to build
a prototypical hardware for recording academy talks on video, to archive the talks for colleagues who cannot participate.
As most other project, the video recording hardware was also based on the Raspberry Pi.
The Pi was equipped with a small camera and a microphone, and streams the data over the network for recording.


The Raspberry Pi is currently the most popular thing
among our developers. It is easy to set up, and provides an open platform for a wide range of projects.
The FedEx day was a great opportunity to experiment with that, and it is also a good way to get together with colleagues who work in other projects.

Author:Fabian Stäber
Categories:misc, raspberrypi, development
OMD 1.10 Release

OMD-LOGO_FINAL2 The developer team of OMD (Open Monitoring Distribution) released the version 1.10 today.

This version contains lots of updated packages including Thruk 1.80, Mod-Gearman 1.4.14, NagVis 1.8, check_mk 1.2.2p3 and many more.

Using the OMD Repository installation is as simple as a apt-get install omd. If you have an rpm-based system, it's as simple as yum install omd or zypper install omd.

Author:Sven Nierlein
Categories:mod-gearman, nagios, omd, thruk
Nagios belches Lava

This is the story, how I increased Nagios’ WAF by hooking up a Lava Lamp for notifying when the wood-burning stove needs to be inflamed.


Author:Roland Huß
Devoxx 2013, Wrap up

It’s time to wrap up our Devoxx 2013 visit (after 1, 2, 3, 4, 5 days geek heaven)


Author:Roland Huß
Tags:conference, devoxx
Categories:devoxx, development
Devoxx 2013, Day 4

So that Devoxx is now nearly over, here are some reviews of talks of the last full conference day. Day 5 is typically a phase-out day with only a handful talks and everybody is an hurry, our Devoxx 2013 wrap out will be published on Monday.


Author:Roland Huß
Tags:conference, devoxx
Categories:devoxx, development
Devoxx 2013, Day 3

On Wednesday Torsten, Christoph and Jan joined our team, and the conference kicked off with full blast: Full Keynote, full rooms, full toilettes, empty coffee and much fun.


Author:Roland Huß
Tags:conference, devoxx
Categories:devoxx, development