Part 3 · Lesson 17 · Advanced

Orchestration

Declare the destination; let the orchestrator drive.

In this interactive Infrastructure lesson from Stencel Academy you don't just read — you type real commands like kubectl get pods, kubectl delete pod promptd-7d4b-x2k9 and watch the machine respond on a live, animated map. It is part of the free How Infrastructure Works course.

Key takeaway: You declare desired state; the control plane watches reality and reschedules pods until the two match.

Before this lesson

Builds on: Containers & Images.

What you'll practise

kubectl get deployment promptd — The declaration itself: 3 replicas, please.
kubectl scale deployment promptd --replicas=5 — Change the goal, not the machines.
kubectl get nodes — The fleet the scheduler places pods onto.
kubectl describe pod promptd-7d4b-f8tq | tail -4 — Events: the reconciliation loop's diary.

Terms you'll learn

podcontrol planeschedulerdesired statereconciliation loopself-healing

Check your understanding

You deleted a pod and a new one appeared. Why?

The control plane reconciles actual state back to the declared desired state
Pods cannot be deleted — the API silently ignored the request
nginx on node-1 detected the outage and restarted the process

Open the interactive lesson →