Insights
-
Introduction to Spring Boot and GraphQL for API Design Pt. 2
Thursday, September 26, 2019 in Insights
GraphQL is a nice way to publish a highly customizable API. In combination with Spring Boot, which makes development really easy and offers features like database integration and security, you can quickly build your API service from scratch. This is …
-
Installing GitLab on OpenShift
Wednesday, July 31, 2019 in Insights
We recently had to install a bunch of applications on a customer’s shiny new OpenShift 3.11 cluster. Among others also GitLab. Turned out getting GitLab up and running on OpenShift is not so easy. What I found on the Internet about installing …
-
Security guide for Amazon Kubernetes Cluster (AWS EKS)
Friday, May 31, 2019 in Insights
One of the most challenging questions in cloud environments is about how secure is my application when its deployed in the public cloud ? Its no secret that security aspects are much more important in a public cloud than it was in classic …
-
Introduction to Spring Boot and GraphQL for API Design
Thursday, May 02, 2019 in Insights
GraphQL is a nice way to publish a highly customizable API. In combination with Spring Boot, which makes development really easy and offers features like database integration and security, you can quickly build your API service from scratch. This is …
-
Hello Kubernetes on AWS! A simple way to test-drive EKS
Monday, April 29, 2019 in Insights
Under the name of “Managed Kubernetes for AWS”, or short EKS, Amazon offers its own dedicated solution for running Kubernetes upons its cloud platform. The way this is provided is quite interesting: While the Kubernetes Master …
-
Avoid Kubelet OOM errors on Amazon Kubernetes Cluster (AWS EKS)
Tuesday, April 16, 2019 in Insights
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
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 …
-
Developers vs. OpenShift CI/CD #3: System test failure analysis
Monday, February 11, 2019 in Insights
After some time, let’s move on to another topic around making OpenShift environments more developer friendly. This time we are going to look at what happens, when a system test actually failed, and how to enable developers to properly react. …
-
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 …