Xavier Coulon – Medium

Xavier Coulon

Xavier Coulon

Customizing the Server-Side Printing of your Kubernetes Custom Resources

This article explains how to display additional information about a custom resource when using the CLI on Kubernetes and OpenShift.

3 min readNov 15, 2019

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Customizing the Server-Side Printing of your Kubernetes Custom Resources

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Xavier Coulon

3 Ways to Update Elements in a Slice

When you have a slice of complex values, how do you update them? This article discusses 3 solutions. The last one relies on pointer…

3 min readMay 6, 2019

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3 Ways to Update Elements in a Slice

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Xavier Coulon
in
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Writing Your First Kubernetes Operator

In this article, we’ll see how to build and deploy your first Kubernetes Operator using the Operator SDK.

11 min readFeb 6, 2019

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Writing Your First Kubernetes Operator

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Xavier Coulon

How To _Avoid_ Parallel Execution of Tests in Golang

Because in some circumstances, this can cause random failures and even a loss of hair.

2 min readJan 4, 2019

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How To _Avoid_ Parallel Execution of Tests in Golang

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Xavier Coulon

Streaming application deployments on Openshift

In this article, we’ll see how OpenShift can automatically deploy a new version of your app each time a new image is pushed to the cluster

5 min readNov 10, 2018

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Streaming application deployments on Openshift

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Xavier Coulon

Kubernetes ConfigMap hot-reload in action with Viper

This is a follow-up to my article about “Managing Pod configuration using ConfigMaps and Secrets in Kubernetes”. Here, we’re going to see…

3 min readOct 2, 2018

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Kubernetes ConfigMap hot-reload in action with Viper

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Xavier Coulon

Fixing a crashed container on OpenShift

This article provides a solution to fix a problem with a pod that did not start because of a configuration error in the command to run…

4 min readMay 31, 2018

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Fixing a crashed container on OpenShift

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Xavier Coulon

Write code in the host, run tests in a container

This is a short article that describe a useful trick that I just used while I was fighting with race conditions in a test.

2 min readMay 18, 2018

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Xavier Coulon

Deploying an etcd cluster on OpenShift using the etcd operator

In this article, we’ll see how to deploy an etcd cluster on Minishift using the etcd operator, an open source tool designed to deploy…

6 min readMay 17, 2018

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Xavier Coulon

Storing data into Persistent Volumes on Kubernetes

Because loosing data when a pod is rescheduled on a development environment is annoying, and it can be really embarrassing on a production…

5 min readMar 27, 2018

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Storing data into Persistent Volumes on Kubernetes

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Xavier Coulon

Xavier Coulon

Halftime dad of two. Swimmer/cyclist/runner and occasionally triathlete. I develop tools for developers on OpenShift.

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