In this post we are going to look at the mutating webhook in order to inject a watcher sidecar container from Part 1. The code can be found here.

Recently, we switched to using Kubernetes for deploying the new version of our application at work. I love Kubernetes. It can handle so many different scenarios. And you can customize it to boot. The customization can take a few different forms, but the one I was most intrigued by were Custom Resource Definitions and Custom Controllers. There are few helpful tools and tutorials out there, but I thought I document my own progress here. I used Kubebuilder to help create the CRD and…