Kubernetes

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(…)

Swiss Cloud Native day landed at the Gurten!

On the 21st of September this year, we attended the Swiss Cloud Native Day. I was accompanied by two of my colleagues, Arnaud Berbier and Christoph Bernhard. This event took place for the third time, and this year, it(…)

Connect a Kubernetes cluster to GitLab

To interact with a Kubernetes cluster during builds, deployments or other tasks in GitLab CI/CD, you need to install the GitLab agent on the cluster. This operation is very easy with GitLab ! The official documentation is available(…)

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 HorizontalPodAutoscaler(…)

Kubernetes is giving off good vibes

Kubernetes is the de facto standard when you think about container orchestration and scheduling, automation in software deployment, and maybe even more a whole ecosystem of tools and components orbiting around it. Since its origin in 2015, Kubernetes has been(…)

Kubernetes Certificates Overview and Regeneration Example

Kubernetes certificates is a very important subject matter as it protects the communication of the components inside your cluster. However it is not a very popular topic as it could be quite confusing and adds more complexity to an already(…)

Using Admission Controller in Kubernetes

Undoubtedly, Kubernetes has become the standard for container orchestration, making it necessary to work with extensions that add a layer of security and modularity. So, what exactly are these extensions? According to the Kubernetes documentation, “An admission controller is a(…)