Archive

Kubernetes Networking by Using Cilium – Beginner Level

There seems to be a strong interest these days about understanding better networking in Kubernetes. This blog post is my contribution on this topic. I’ll do my best to explain it in a visual way and translate the techie(…)

Reestablish administrator role access to Rancher users

Introduction I came across a situation where there were no more Administrator users in Rancher. Therefore there was no access to the local (Rancher) cluster and administration of Rancher through the UI. No user could configure and reassign the(…)

Introduction to PostgreSQL in OpenShift

I’m on a mission to tackle scary topics around DevOps these days! In my 2 previous blog posts (Part 1 and Part 2) I’ve tried to demystified the DevOps word (and(…)

Are You Afraid of the Word DevOps? – Part 2

In my previous blog post, we started to explore how to increase the Time-to-Market (TTM) of your simple application. We improved it and to go further we will now leverage containerization. As in part 1,(…)

Are You Afraid of the Word DevOps? – Part 1

We came to realize recently that there is a resistance to the word DevOps and it repels some of you. Sadly, by stopping to this word, it prevents you from entering his world! Do you feel that DevOps is(…)

Rancher autoscaler – Enable RKE2 node autoscaling

In Rancher, if you make use of node drivers to provision your RKE2 nodes, you can also make use of the cluster autoscaler. In this article, I will show you how simply you can configure the autoscaler for your(…)

CloudBees CD/RO – How to use formal output parameter

Did you have issues using output parameter in CloudBees CD/RO or didn’t find much documentation about it? Then you are at the right place. I will present and guide you through an example of how to use the output(…)

Kubernetes CoreDNS in depth

You know that CoreDNS is one of the core component of Kubernetes. You may also know that the CoreDNS pod is up and running only after the Container Network Interface (CNI) has been installed in(…)

Ansible Automates – Event Driven & Lightspeed

It was a pleasure to attend the Ansible Automates Roadshow in Geneva this year with my colleague Chay Te. There were several topics and sessions covered during the full day. It was a learning opportunity about the vision and(…)

Kubernetes – Design HorizontalPodAutoscaler using Memory & CPU

So, you are interested to implement autoscaling in your Kubernetes cluster. I wrote a blog on that topic last year to help you see clearly what you can configure depending on the API version of(…)