Running stateful workloads on Kubernetes: cluster setup, database operators such as those for PostgreSQL, Helm, storage, networking, OpenShift and Rancher.
A couple of weeks ago, during an internal dbi services workshop about Docker and K8s, I got an interesting question: is it possible to get a big picture of pods connected to one specific persistent volume (PV) by using kubectl command? It was an interesting question because if we go through the usual kubectl command, it doesn’t provide natively the…
Last week, we had the chance to attend to the CloudBees DevOps Playground in London. The event was a presentation and a Hands-On on Jenkins X done by one of the most popular guys from the CloudBees, Gareth Evans. Before taking an interest in Jenkins X, we focused most of our time in the Docker and Kubernetes part. We enhance…
To bootstrap a minimal K8S cluster for testing purpose, kubeadm is a very interesting tool. The goal of this blog is not to explain to you the K8S architecture or the components but only the deployment part. using kubeadm. The final architecture of our cluster will be the following: Source:https://elastisys.com/2018/01/25/setting-highly-available-kubernetes-clusters/ Docker Installation The first step is to install Docker on…
I got recently the 4.08 update from the Windocks team and I was very excited to evaluate some of new features. The first cool one I want to present in this blog concerns the Kubernetes support for deploying Windocks containers that will make my application deployment definitely easier. Let’s say you want to deploy your application that is tied to…
During the last DevOps Day in Geneva, I presented a sample of our CI implementation related to our MSSQL DMK maintenance product. It was definitely a very good experience for me and good opportunity to get feedback from DevOps community as well. During the session I explained our CI pipeline includes SQL Server containers both on AKS (K8s as managed…
It has been while since my last blog. Today it is about continuing with helm charts and how to upgrade / downgrade SQL Server containers to a specific cumulative update. My first write-up in my to-do list. Last year, I wrote an introduction of SQL Server containers on K8s. I remembered to face some issues when testing upgrade scenarios (probably…
This write-up follows my first article about helm chart with SQL Server. This time, I would like to cover the availability groups topic and how to deploy them with helm charts. In fact, to go through this feature for AGs was motivated to its usage in our Azure DevOps CI pipeline in order to deploy a configurable one on an…
During the last DockerCon EU in Barcelona, I heard a lot about Helm with K8s architectures. It was also a good opportunity to write about it after attending to this conference. In a nutshell, Helm is a package manager for K8s and you may think of it like the other ones available on the Linux side with apt, yum or zypper to…
