World K5: Lunch Rush

ResourceQuotas and LimitRanges

You will learn: how to give each zone a budget and a default plate size.

Checked with Kubernetes 1.37 on 31 Oct 2026

The problem

Three teams share one food court. One team orders 50 trays and fills every stall. The others get nothing. How do you stop that?

Watch

You are here: cluster kind-dev namespace default

~/shop $ kubectl apply -f quota.yamlresourcequota/food-quota created~/shop $ kubectl get resourcequota -n foodNAME         REQUEST                                                   LIMIT   AGEfood-quota   pods: 0/10, requests.cpu: 0/1, requests.memory: 0Gi/1Gi           0s

A is a zone’s budget. In total, the food zone may ask for 1 CPU, 1Gi and 10 trays.

Try it

A sets a default plate size. Containers with no requests get these numbers. Tap the line that sets the default CPU request.

Tap the default CPU request.

0 of 1 found

Predict

Each shop tray now asks for 250m CPU. The zone’s budget is 1 CPU. You order 5 trays. How many start?

Check

You are here: cluster kind-dev namespace default

~/shop $ kubectl get deployment shop -n foodNAME   READY   UP-TO-DATE   AVAILABLE   AGEshop   4/5     4            4           17s~/shop $ kubectl get events -n food --field-selector reason=FailedCreate -o jsonpath={.items[0].message}Error creating: pods "shop-68b774968-l9f8m" is forbidden: exceeded quota: food-quota, requested: requests.cpu=250m, used: requests.cpu=1, limited: requests.cpu=1

exceeded quota in plain words: the 5th tray would go over the zone’s budget. So it was never made.

Try it

Make the shop fit the budget: ask for 4 trays. The pink bar shows you are in the food zone.

You are here: cluster kind-dev namespace food

dev-control-planeOpenManager

No trays here.

dev-workerOpen

shop·5wqrc
shop·qwclt

dev-worker2Open

shop·6f495
shop·s7jmh

Time: +0s (sped up)

Hint

Type kubectl scale deployment shop --replicas=4.

Check

True or not? Sort each sentence.

Drag a card into a box. Or tap the card, then tap the box.

You did it!

You can now give a zone a budget and a default plate size.

Go deeper (optional)

kubectl describe namespace food shows the budget and what is used. Quotas can also count objects, such as Services or Secrets. A LimitRange can set a min and max too. Then a tray that asks for too much is refused.

Real rep (optional): make a namespace on kind and add both files. Then order too many trays.