Deep dives into DevOps and server-side topics, combining theory with hands-on examples. Run every command in an attached remote playground, from your browser or local terminal over SSH — no setup required.
Build a Kubernetes operator for a small Pet API, first as a 15-line bash loop and then as a Go controller with controller-runtime. Every Pet gets a Pod to live in, gets hungry as time passes, and runs away if nobody feeds it. Along the way, you'll see how the reconcile loop works.
Build a CustomResourceDefinition for a small Pet API one layer at a time, and see how much the API server does with it on its own. By the end, it rejects invalid Pets, fills in defaults, keeps status separate, and prints useful columns. No controller and no code needed.
