Insights
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Database testing with Citrus
Thursday, March 01, 2018 in Insights
Database communication is an essential part of many applications, when persistent data storage is required. May it be orders, customer data, product recommendations or product information, if persistent storage is in place, the data contains a …
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FOSDEM Video: Monitoring Legacy Java Applications with Prometheus
Sunday, February 04, 2018 in Insights
At this year’s FOSDEM conference I did a 30 minutes presentation on Monitoring Legacy Java Applications with Prometheus. The talk gives an overview of some of the options you have for monitoring Java applications with Prometheus when you …
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Application monitoring in OpenShift with Prometheus and Grafana
Friday, January 19, 2018 in Insights
There are a lot of articles that show how to monitor an OpenShift cluster (including the monitoring of Nodes and the underlying hardware) with Prometheus running in the same OpenShift cluster. This article however is based on a different scenario: …
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Automated debugging with git
Friday, January 12, 2018 in Insights
Imagine your’re working on a bigger feature in a complex piece of software. Your implementation is complete, all tests in scope turned green and you push your changes for integration testing. Then, some integration tests from a completely …
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Devoxx Video: Prometheus Monitoring for Java Web Applications w/o Modifying Source Code
Tuesday, November 07, 2017 in Insights
The Prometheus monitoring tool follows a white-box monitoring approach: Applications actively provide metrics about their internal state to the Prometheus server. In order to instrument an application with Prometheus metrics, you have to add a …
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Simulating 3rd party services with Spring Boot and Citrus
Friday, September 22, 2017 in Insights
When developing software that exchanges data with other components or services you may be confronted with the proper simulation of those foreign services during integration testing. This is because you need to connect with a foreign service that is …
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Docker Headless VNC Container 1.2.0 Released
Tuesday, September 19, 2017 in Insights
Docker Headless VNC Container 1.2.0 has been released today. The different Docker images contains a complete VNC based, headless UI environment for testautomation like Sakuli does or simply for web browsing and temporary work in a throw-away UI …
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Monitoring Plugin Language Comparison
Wednesday, September 13, 2017 in Insights
Which programming language should we use to write monitoring check_plugins? This question rose some discussion and this post is trying to give some hints. This kind of a follow up post to this older Blogpost. The focus of this post was more on the …
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Reunite separate git repositories
Friday, September 08, 2017 in Insights
I recently had to deal with two projects that have a common origin but separated at some point in time. I now had to try to bring them back together again - basically merging the changes. Sounds like a pretty standard git merge or git rebase job. …
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NEB Modules with Go
Friday, September 01, 2017 in Insights
Have you ever written a NEB (Nagios Event Broker) module? This article will explain a tool which makes this a lot easier, especially if the reason was that you are not familiar with C or C++. In this case the “Go NEB Wrapper” could come very handy …