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Docker

Databases and application servers in Docker containers: building images, Docker Compose, networking, volumes and what to consider before running stateful workloads in containers.

Deploy GitLab on Kubernetes using Helm

Over the last years GitLab became one of the most popular and powerful open source git source code platform. From pure source code repository to a DevOps platform, it’s interesting to see how GitLab has evolved and this is reflected in the technological choices made by the technical teams. GitLab can be deployed on Cloud or On-premise environments in multiple… 

Setup an NGINX Ingress Controller on Kubernetes

One of the most important and basic concept in Kubernetes is the Service exposition. How about exposing a Kubernetes Service deployed inside a cluster to outside traffic? Let’s have a look on the different approaches to expose a Kubernetes Service outside the cluster and particularly the role of the Ingress Controller. NodePort, Load Balancers, and Ingress Controllers In the Kubernetes… 

Jenkins X ecosystem: Kaniko as image builder

For a few months now, we started a huge project at a customer; build a complete CI/CD platform for Documentum. The final goal is to create a CI/CD process for platform and software delivery to reduce as possible the delivery of the releases. To achieve this goal, 2 main products have been introduced at our customer by our DevOps team:… 

A day at DevOps World in Lisbon

On this second day here at DevOps World in Lisbon, I built a very interesting and intensive program of sessions to attend which I will explain to you more in detail below. This was also the opportunity for us (Arnaud and I) to meet our main customer from whom we are working with Jenkins X each day. It is always… 

DevOps World – Jenkins World – Next Days – Keynote, Sessions & SuperParty

Hi folks, the second day is now over. It’s has been terminated with the SUPERPARTY sponsored by sonatype. Capes & masks were available to celebrates everyday superheroes, LIKE US. It was “sympa”, with music, foods, drinks and so on. But yeah, it was not the only things, let’s come back to the second DevOps Jenkins World day which began with… 

DevOps World – Jenkins World – The Workshop On Day One

After achieving new challenges during customer activities where I was managing a quite huge project around Kubernetes & Jenkins X EcoSystem, I get the opportunity to attend the DevOps World – Jenkins World in Lisbon.A big thanks as I will better understand all the superheroes in this Jenkins World.The superheroes for me this year is Jenkins X !Today was the… 

Create a Kubernetes cluster with Google Kubernetes Engine

Nowadays the market for cloud providers is very competitive. Large companies are fighting a very hard battle over the services they provide. Each offers a wide range of more or less identical products with specific features for each. In my point of view, having deployed Kubernetes clusters in several environments (Cloud and On-Premise), I pay particular attention to Google Cloud… 

Kubernetes DNS resolution using CoreDNS (force update deployment)

After installing your Kubernetes cluster composed by masters and workers, a few configurations steps need to complete. In fact, the join command is not the last operation to perform, in order to have a fully operational cluster. See how to deploy a k8s cluster using kubeadm here: https://www.dbi-services.com/blog/kubernetes-how-to-install-a-single-master-cluster-with-kubeadm/ . One of the most important steps in the configuration is the… 

Using non-root SQL Server containers on Docker and K8s

This is something that I waited for a while, in fact since SQL Server 2017 … and the news came out on Wednesday 09th September 2019. Running Non-Root SQL Server Containers is now possible either on the next version of SQL Server (2019) and it has been backported on SQL Server 2017 as well. Non-root SQL Server containers will likely… 

How to get a big picture of K8s pods and PVs by script

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… 

Debugging SQL Server containers considerations

When it comes to troubleshooting processes or to get a deeper look of how SQL Server works internally , I always used debugging tools as windbg on Windows and since SQL Server is available on Linux, I switched to strace tool. But let’s add containers in the game now. I didn’t want to touch any based image for applications including…