A couple of days ago, I got a question from a customer about an issue he ran into when trying to spin up a container on Windows.
Read More
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 a lot our skills during the last months on the administration of Kubernetes cluster and…
Having a fresh install of RHEL8 on my lab environment, I was curious to take a look at new containerization stuff from Red Hat in the context of SQL Server 2019. Good chances are the future version of SQL Server should be available and supported on with the latest version of Red Hat but for now this blog post is purely experimental. This time I wanted to share with you some thoughts about the new…
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 each cluster node: yum install yum-utils device-mapper-persistent-data lvm2 yum-config-manager \ –add-repo \ https://download.docker.com/linux/centos/docker-ce.repo yum update…
Few months ago I attended to the Franck Pachot session about Microservices and databases at SOUG Romandie in Lausanne on 2019 May 21th. He covered some performance challenges that can be introduced by Microservices architecture design and especially when database components come into the game with chatty applications. One year ago, I was in a situation where a customer installed some SQL Server Linux 2017 containers in a Docker infrastructure with user applications located outside…
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 a Windocks container for SQL Server. In a previous blog post I explained why we…
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 service in Azure) and Windocks. I got questions from some of attendees who asked me…
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 a lack of knowledge). Since then, I have discovered helm charts and I use them…
Docker EE 2.1 is a Containers-as-a-Service (CaaS) platform on-premise or in the cloud. To manage your cluster of containers, Docker EE allows you to install UCP (Universal Control Panel). When you plan to install the UCP 3.1.2 in Azure, the installation fails during the deployment of the UCP service. You will get the following error message. [[email protected] ~]$ docker logs ucp-reconcile If you google the error message you will get a lot of answers…
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 AKS cluster with SQL Server 2019. If you look carefully at the release pipeline, Windocks…