Insights
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Removing old Naemon logfiles
Wednesday, June 05, 2024 in Insights
In an OMD environment Naemon writes its logfile to var/naemon/naemon.log. At midnight a logrotate job moves the logfile to the folder var/naemon/archive, renaming naemon.log to naemon.log-YYYMMDD. By default none of the archived logs is ever deleted. …
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Replacing check_http by check_curl - Lessons Learned
Friday, July 28, 2023 in Insights
In a customer’s installation we had the problem, that an http-check (using the plugin check_http) could not successfully connect to a website. $ check_http -H cts-freq.cloud -t 120 --ssl -u "/" --ssl --onredirect follow -vvv CRITICAL - …
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Image Change Triggers for Tekton
Monday, March 14, 2022 in Insights
One of our customers is in the process of decommisioning their OpenShift v3.11 cluster. This cluster is currently still used for building customer specific base images. Over time quite a few elaborated pipeline builds (based on Jenkins) have been …
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Visualisation and debugging of Apache Camel routes
Thursday, February 24, 2022 in Insights
The documentation of software is an everyday business of a software developer and engineer. Especially for integration scenarios a diagram on the flow of a message through the system or the whole landscape is an essential illustration. Fortunately …
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A look insight Camel K
Thursday, February 24, 2022 in Insights
Today software often needs to be run in cloud environments. Newly developed software, especially microservices are developed with cloud readiness in mind. But we not only have microservices in business environments, we also have integration …
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Streaming and Messaging
Wednesday, July 14, 2021 in Insights
Disclaimer This article is the author’s opinion on similarities and differences between Streaming and Messaging. Streaming and Messaging The first time I was busy with the terms messaging and streaming was during my master thesis in 2016. Among …
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A journey of a Helm operator to OperatorHub.io and back again
Monday, May 03, 2021 in Insights
Some time ago, I started a project to create a Helm based operator for an OpenShift application. I used the Operator SDK to create the Helm operator. The Operator SDK documentation describes the parameters pretty good, and it contains a simple …
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A journey of a Helm operator to OperatorHub.io and back again
Monday, May 03, 2021 in Insights
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Some time ago, I started a project to create a Helm based operator for an OpenShift application. I used the Operator SDK to create the Helm operator. The Operator SDK documentation describes the parameters pretty good, and it contains a simple …
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RabbitMQ
Tuesday, February 09, 2021 in Insights
The first version of RabbitMQ has been released in 2007. Back in these days, the goal was to provide a complete open source implementation of Advanced Message Queuing Protocol (AMQP), aiming at modern messaging needs such as high availability, high …
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How to integrate Kafka with Istio on OpenShift
Tuesday, February 02, 2021 in Insights
Last summer I watched the Red Hat master course about Kafka from Sébastien Blanc. The Kafka setup in Kubernetes presented in the course looked pretty easy. The Kafka client implementation for Java seemed to be easy as well. Furthermore, I wanted to …