Welcome to ConSol* Labs

Labs is a technical playing field sponsored by ConSol* where we – the employees – can share our Open Source involvement. We use this site to blog about our area of personal interest, from the daily business at work and from our spare time projects.

ConSol* @JavaLand

Posted on March 26th, 2014 by Fabian Stäber

Jatumba ConSolis! Zwei aufregende Tage gehen zu Ende und was können wir euch berichten? Das JavaLand hat einen super Start in der Welt der Konferenzen hingelegt! Sowohl die Speaker als auch die Atmosphäre ließen keine Zweifel offen, hier entsteht etwas Großes. Neben sieben parallelen Tracks, einem Hacker-Garten und zahlreichen Community-Aktivitäten gab es einen kompletten Freizeitpark zu entdecken.

javaland_1

Auch ConSol* war mit einem eigenen Vortrag vertreten, der erfreulicherweise sehr gut besucht war – Java 8: Mehrere Prozessorkerne effizient nutzen mit Lambdas und Streams.

javaland_2

Unsere Top-3-Talks der JavaLand waren:

Insgesamt fanden wir die Konferenz wirklich super und das Catering lies keine Wünsche offen. Besonders gefallen hat uns auch die Präsenz der Java User Groups, die zu einer sehr lebendigen Atmosphäre beigetragen hat. Etwas schade war, dass der Shuttle-Service nach Brühl ein paar „RuntimeExceptions“ hatte. Wir wünschen dem JavaLand weiterhin viel Erfolg und hoffen wir sehen uns nächstes Jahr wieder!

Tobias und Fabian

Tags: , ,
Filed under Java, JavaLand | No Comments »

Automated Integration Testing for webMethods with Citrus

Posted on March 6th, 2014 by Jan Zahalka

Achieving Continuous Integration for ESB Projects with Citrus (Part I: Introduction)

Continuous integration is almost mainstream nowadays. Probably no one wants to argue against the value of having an all-embracing integration test suite in place, which is lightweight enough to be executed on each code change. In this blog series I want to show the interplay between Citrus, the integration test framework written and maintained by ConSol* and a commonly used Enterprise Service Bus, the webMethods Integration Server.

Read the rest of this entry »

Tags:
Filed under Citrus | No Comments »

NRPE, NSCA und NSClient++ – Monitoring Minutes 1/14

Posted on February 28th, 2014 by lausser

mm_mg Nach einer längeren Pause (Kundenprojekte haben Vorrang) setzen wir die Reihe Monitoring Minutes wieder fort. Hier ist die zehnte Folge, in der Matthias Gallinger erzählt, wie er in einer Hochsicherheitsumgebung ein Gateway mit NSClient++ gebaut hat, welches in die gesperrte Zone mit NRPE hineinschaut und die Ergebnisse mit NSCA zum Nagios-Server schickt.

Read the rest of this entry »

Filed under Uncategorized | No Comments »

Find your agents with Jolokia 1.2.0

Posted on February 24th, 2014 by roland

New year, new release. Jolokia 1.2.0 is in the house.

Read the rest of this entry »

Filed under Jolokia | No Comments »

Erstes Naemon Release

Posted on February 17th, 2014 by sven

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? Read the rest of this entry »

Tags: , , , ,
Filed under Naemon | No Comments »

Review "Icinga Network Monitoring" von Viranch Mehta

Posted on February 2nd, 2014 by lausser

 

2296OS

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.

Read the rest of this entry »

Tags: , , ,
Filed under Nagios | No Comments »

Neues Feature von check_logfiles: Teilausdrücke gruppieren

Posted on January 31st, 2014 by lausser

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.

Read the rest of this entry »

Filed under Uncategorized | No Comments »

Have you heared about Naemon

Posted on January 25th, 2014 by sven

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. Read the rest of this entry »

Filed under Nagios | 1 Comment »

First ConSol* FedEx Day

Posted on December 20th, 2013 by Fabian Stäber

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 demo projects. 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.

Summary

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.

Filed under Misc, raspberrypi, Uncategorized | 1 Comment »

OMD 1.10 Release

Posted on December 17th, 2013 by sven

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.

Filed under Mod-Gearman, Nagios, OMD, Thruk | 1 Comment »

Google