Reguläre Schwellwerte

In der neuesten Version von GLPlugin habe ich die Möglichkeit vorgesehen, Thresholds auch als reguläre Ausdrücke anzugeben. Wie schaut das nun genau aus?

$ check_wut_health --hostname --community public --mode sensor-status
OK - return air temperature Unit 1.1 is 21.40C, humidity Unit 1.1 is 49.40%, return air temperature Unit 2.1 is 22.40C, humidity Unit 2.1 is 46.80% | 'temp_Unit 1.1'=21.40;25;28;; 'hum_Unit 1.1'=49.40%;40:60;35:65;0;100 'temp_Unit 2.1'=22.40;25;28;; 'hum_Unit 2.1'=46.80%;40:60;35:65;0;100

Wir sehen hier die hartcodierten Default-Schwellwerte 25 und 28 für die Temperatur bzw. 40:60 und 35:65 für die Luftfeuchtigkeit.
Bisher gab es zwei Möglichkeiten, diese zu ändern, z.b. in 20 und 30 für die Temperaturen zu ändern.


Author:Gerhard Laußer
Tags:Nagios, Plugins
Categories:nagios, omd

assets/2016-04-07-sakuli-v1.0.0/sakuli_logo_small.png “Sakuli”, das Open-Source-Framework zum automatisierten Testen von Applikationen, ist vor kurzem in Version 1.0 erschienen. Ein kleiner Blick auf die zurückliegenden Änderungen.


Author:Simon Meggle
Tags:e2e, end2end, monitoring, nagios, omd, sakuli
Categories:sakuli, omd, nagios, development

Markdown is great for writing documentation or tutorials. However, executing the steps from a tutorial usually means to copy and paste the commands into a shell. There is no guarantee that the documentation is complete, and there is no protection against copy-and-paste errors.

This post shows how to use Packer for automatically executing code snippets from Markdown files on a variety of platforms. Machine images are created directly from the code snippets in the documentation. That way, documentation is guaranteed to be up-to-date and complete, and it can be integrated in an automated delivery pipeline.


Author:Fabian Stäber
Tags:markdown, packer, documentation
SSL - No more excuses

There are many reasons to enable encryption on your webserver and since Let’s Encrypt openend its public beta, there are no more excuses to not use ssl. Besides the official scripts, programs and webpage, there is also already a Perl module Crypt::LE available which uses the Lets Encrypt API and makes requesting and renewing certificates super easy and most important… scriptable.


Author:Sven Nierlein
Tags:perl, letsencrypt, ssl, tls, hsts
Categories:apache, ssl

In a previous article we went through how to build a chat room web application that used REST and STOMP for communicating between the client and server. In this article I use the very same application and show how to write automated integration tests using the open source Citrus integration test framework.

If you haven’t read the first article don’t worry. A quick summary of all the important bits will be shown shortly below. But before I get to that lets talk a little bit about automated integration testing and citrus.

One of the biggest challenges when testing any application is being able to simulate all endpoints.


Author:Martin Maher
Tags:citrus, stomp, websocket
Categories:citrus, integration-testing, development
Caching with JCache


A couple of years have passed since we last looked into in-memory caches here at ConSol. In that time a bunch of things have happened:

  • Probably the most significant thing that happened was that the oldest Java Service Request JSR 107, also known as JCache, finally reached ‘Release’ status. This JSR was a long time in the making taking a whole 13 years since the initial proposal back in 2001.

  • Grid Gains In-memory Data Fabric became an open source project and is now available under the Apache Foundation Project and known as Apache Ignite.

  • The existing In-memory caches providers, like Hazelcast, have received a whole host of new features including things like support for distributed transactions, a new Map-Reduce API, interceptors for executing business logic, when the cache entries change, to mention just a few.


Author:Martin Maher, Georgi Todorov
Tags:jcache, hazelcast, ignite, bigdata
Categories:cache, java, development

The host- and servicecheck scheduling of Nagios has always been some kind of black box. Checks pile up when using timeperiods which often leads to performance issues while the Nagios host idles again just a minute later. Latest Thruk release (2.06) ships a new addon which visualizes and alleviates this issue.

Core Scheduling Plugin


Author:Sven Nierlein
Tags:omd, nagios, icinga, thruk
Categories:omd, nagios
Sakuli v0.9.2 Released

Sakuli todays release is a great milestone because it introduces a brand new graphical installer and a bunch of other features!
Sakuli installer

Download and check it out sakuli-v0.9.2-installer.jar!


Author:Tobias Schneck
Tags:e2e, end2end, monitoring, nagios, omd, sakuli
Categories:sakuli, omd, nagios, development

OMD Labs Edition 2.10 in has been released today. The OMD Labs Edition is based on the standard OMD but adds some
more useful addons like Grafana and Influxdb or additional cores like Icinga 2 and
Naemon. Todays release is a great milestone because it introduces grafana based graphing out of the box in the usual easy OMD way.


Author:Sven Nierlein
Tags:omd, nagios, grafana, thruk
Categories:omd, nagios

Fabian and Christoph have been invited to speak at Devoxx Conference 2016 in Antwerp, Belgium. Watch their talks to learn more about HTTP2 and Citrus Framework.


Author:Jens Klingen
Tags:conference, devoxx, talk, citrus, http2