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CKAStorageTwo nodesMedium

StatefulSet with volumeClaimTemplates

Scenario cka-sto-004 · about 10 minutes · 7 points · 10 grader checks

Create a headless Service and a StatefulSet whose pod gets its own dynamically provisioned PVC.

  • storage
  • statefulset
  • headless
  • volumeclaimtemplate
  • pvc

What you will practise

  • Create a headless governing Service
  • Author a StatefulSet with volumeClaimTemplates
  • Recognise generated PVC naming (<template>-<sts>-<ordinal>)

Start this lab

With the CLI installed and signed in, this command provisions a two nodes cluster on your Mac, applies the scenario setup and prints the task below.

goldenkube start cka-sto-004

Task

The task text exactly as the CLI shows it. Solve it on the cluster, then run goldenkube submit.

In namespace "data" (create it if missing), create a headless Service named "pg" (clusterIP: None, port 80, selector app=pg) and a StatefulSet named "pg" with serviceName "pg", 1 replica, image nginx:1.27, pod label app=pg. The StatefulSet must have a volumeClaimTemplate named "pgdata" requesting 1Gi, accessMode ReadWriteOnce, StorageClass "local-path", mounted in the container at /var/lib/data. The StatefulSet must have 1 ready replica and the generated PVC "pgdata-pg-0" must be Bound.

Requirements and details

Certification
CKA · Certified Kubernetes Administrator
Domain
Storage
Difficulty
Medium
Cluster topology
Two nodes
Cluster features
Storage
Recommended time
10 minutes
Points
7
Grader checks
10
Kubernetes version
1.37
Minimum CLI version
0.1.0
Scenario version
1
Published

Grading runs locally: 10 state checks read your cluster when you submit; the scenario passes when every check passes. Hints, the reference solution and the check definitions are available only inside the CLI, not on this page.

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Make an existing StorageClass the cluster default and provision a PVC without naming a class.

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  • storage
  • storageclass
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  • pvc

goldenkube start cka-sto-003

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