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CNPEGitOps and Continuous DeliverySingle nodeMedium

Progressive delivery: blue/green with a preview service and manual promotion

Scenario cnpe-git-005 · about 15 minutes · 8 points · 5 grader checks

Run checkout as an Argo Rollout with a blue/green strategy, verify the new version on the preview Service, then switch the active Service by promoting.

  • argo-rollouts
  • blue-green
  • progressive-delivery
  • preview
  • continuous-delivery

What you will practise

  • Configure a blueGreen Rollout with active and preview Services
  • Disable auto-promotion and promote by hand
  • Verify which ReplicaSet each Service selects

Start this lab

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

goldenkube start cnpe-git-005

Task

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

Argo Rollouts runs in namespace "argo-rollouts". Namespace "pay" contains the Services "checkout-active" and "checkout-preview" (both select app=checkout). 1. Create an Argo Rollout "checkout" in "pay": 3 replicas of ghcr.io/stefanprodan/podinfo:6.16.0 (container "podinfo", port 9898), pod label app=checkout, blue/green strategy with "checkout-active" as active Service and "checkout-preview" as preview Service, and no automatic promotion. 2. When it is healthy, update the Rollout to ghcr.io/stefanprodan/podinfo:6.17.0, check the new version through "checkout-preview", then promote it so "checkout-active" serves 6.17.0.

Requirements and details

Certification
CNPE · Certified Cloud Native Platform Engineer
Domain
GitOps and Continuous Delivery
Difficulty
Medium
Cluster topology
Single node
Cluster features
None beyond the base cluster
Recommended time
15 minutes
Points
8
Grader checks
5
Kubernetes version
1.35
Minimum CLI version
0.1.0
Scenario version
1
Published

Grading runs locally: 5 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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