During a recent training, a student asked me how I would update the configuration of CoreDNS on a Kubernetes cluster, when the cluster is deployed is Terraform and comes with CoreDNS pre-installed. This article explains how to do it, and shows more generally speaking how to get Terraform to update resources that it…
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There is a lot of material out there about services meshes, and this is another one. Yay! But why? Because I would like to give you the perspective of someone who wish service meshes did exist 10 years ago, long before the rise of container platforms like Docker and Kubernetes. I’m not claiming that this perspective…
I recently went down a very deep rabbit hole to understand why, some months, Cloudflare was charging us 3x what we were expecting for their Cloudflare Images service. I’m posting this write-up because back then, a quick search didn’t turn anything up; and Cloudflare support has totally ghosted us for more than 8…
This is a list of recurring anti-patterns that I see when I help folks with their container build pipelines, and suggestions to avoid them or refactor them into something better.
When they start using Docker, people often ask: “How do I get inside my containers?” and other people will tell them “Run an SSH server in your containers!” but that’s a very bad practice. We will see why it’s wrong, and what you should do instead.