Insights
Avoid Kubelet OOM errors on Amazon Kubernetes Cluster (AWS EKS)
Tuesday, April 16, 2019 in Insights
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AWS offers a great service called “Amazon Elastic Container Service for Kubernetes” (AWS EKS). The setup guide can be found here: Offical AWS EKS getting started guide If you overload such a cluster it easily happens that your Kubelet …
Of VPCs, Subnets and ACLs
Friday, April 12, 2019 in Insights
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In the first article of this series, Getting started with AWS Lambda, we used a Cloudformation template to provision and deploy all needed parts for our REST application. In this and the following articles, we are going to explore components used in …
Of VPCs, Subnets and ACLs
Friday, April 12, 2019 in Insights
In the first article of this series, Getting started with AWS Lambda, we used a Cloudformation template to provision and deploy all needed parts for our REST application. In this and the following articles, we are going to explore components used in …
oc patch unleashed
Monday, April 08, 2019 in Insights
Recently, I stumbled on a situation where I wanted to add a couple of values to an OpenShift deployment configuration. Previously I had modified or added a single attribute in a yaml file with oc patch. So I started to wonder whether it is possible …
Comparing Kubernetes and OpenShift
Monday, February 11, 2019 in Insights
Kubernetes and OpenShift have a lot in common. Actually OpenShift is more or less Kubernetes with some additions. But what exactly is the difference? It’s not so easy to tell as both products are moving targets. The delta changes with every …
Comparing Kubernetes and OpenShift
Monday, February 11, 2019 in Insights
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Kubernetes and OpenShift have a lot in common. Actually OpenShift is more or less Kubernetes with some additions. But what exactly is the difference? It’s not so easy to tell as both products are moving targets. The delta changes with every …
Java Licensing Is the Free Lunch over?
Tuesday, February 05, 2019 in Insights
The license change to Java SE 8, as well as the new license for Java SE 9 and onwards lead to confusion within the Java community. Looking for information on the web, one finds results in the spectrum from “Is Java in Jepoardy?" to …
Getting Started with AWS Lambda
Monday, February 04, 2019 in Insights
Lambda is AWS’ realization of a serverless architecture. Instead of deploying instances and scaling them manually, developers deploy only their code and AWS executes the code. Different triggers for code executions can be defined, e.g. when a …
Advanced OpenShift command line interface
Wednesday, January 09, 2019 in Insights
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The OpenShift command line interface is a very powerful tool which is quite useful for beginners and advanced user of OpenShift alike. Some of its features are not well documented or not documented at all. In this article I would like to shed some …
Introduction to TimescaleDB
Wednesday, October 31, 2018 in Insights
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Our world is full of various processes: tracking of goods delivery, currencies trading, monitoring of server resources, hotel bookings, selling goods or services etc. Since these processes occur over time, they can be described by time series data. …