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Here’s something that surprises a lot of people coming to Kubernetes for the first time. A pod in Running state doesn’t mean your application is actually working. It means the container process started. Those are…
This is the post where we talk about one of the most consequential — and most commonly misconfigured — parts of running Kubernetes in production. Get resource requests and limits right and your cluster runs…
Everything we’ve covered so far has been pleasantly stateless. Pods come and go, get replaced, move between nodes — and because they don’t hold any important data locally, that’s fine. But at some point your cluster…
There’s a pattern that shows up constantly in immature container setups: configuration baked directly into the container image. The database hostname, the log level, the feature flags — all hardcoded at build time.…
Here’s a problem that becomes obvious the moment you try to connect two things in a Kubernetes cluster. In the last post we established that pods are ephemeral — they die and get replaced, and the replacement gets a…
In the last post we established that bare pods are fragile — if one dies, it stays dead. Nobody’s watching it. You’d have to notice the problem yourself and fix it manually, which is exactly the kind of toil…
If you’ve spent any time around Kubernetes documentation, you’ve seen the word “pod” used constantly — often without a great explanation of what it actually is or why it exists. Most people assume a pod is just a…
In the last post we talked about why Kubernetes exists — the bin-packing chaos that happens when you’re running a lot of containers across a lot of servers without any coordination layer. Now let’s look at how…
Let’s be honest: the Kubernetes docs are a bit of a wall. You go looking for a simple explanation of what the thing actually is, and you end up reading about “container orchestration platforms” and “desired state…