Kubernetes

VMware Tanzu Kubernetes: Configure your managed cluster

This third blog describe the steps to do once your cluster is initialized and in ready state. In case you missed the first 2 blogs you can find them here and(…)

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 world!)(…)

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, I(…)

How to delete a resource with the error: failed calling webhook

The original mistake In preparation of the GitLab essentials workshop, I’m using helm to deploy it. After a few tests, I wanted to clean up my cluster, and accidentally deleted the namespace before doing helm uninstall.

Install NeuVector 5 on OpenShift Local 4.14

I’ve been playing around with 2 applications recently: OpenShift from Red Hat and NeuVector from SUSE. At some point I’ve wondered if I couldn’t play with both at the same time. Read on as I’ll share some tips & tricks(…)

Interacting with OpenShift Local in an Azure VM

In my previous blog I’ve written about the no or low cost solutions to setup an OpenShift cluster to play with. I’ve detailed the installation of OpenShift Local on Azure. OpenShift Local is like a mini cluster that is(…)

Test OpenShift 4 at low cost in Azure

If you want to learn and test OpenShift 4 (the last release is 4.14 at this time of writing), you may not want to go straight with the installation of a full cluster. Using the OpenShift Service of a cloud(…)

Combining Powerful Cilium Features Together In Kubernetes

My colleagues and I have played with Cilium from Isovalent for a while now and we have successfully deployed it as simple CNI (Container Network Interface) along with Hubble on several production Kubernetes cluster of our customers.

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 cluster.

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 your(…)