Kubernetes exercises

Exercise: roll out a simple deployment to set up a hosted service

• Create a deployment.yaml manifest
  • Deploy the Hello Kubernetes container from Docker Hub
    • Guidance on authoring deployment manifests
  • Label the pods
    • In your spec.template for the deployment you can attach an app label:

      metadata:
        labels:
        app: my-kubernetes-app
      

  • Run the deployment using kubectl
    • kubectl apply -f deployment.yaml
  • Verify the pods have been deployed successfully
    • kubectl get pods
    • kubectl get deployments
• Create a service.yaml manifest to deploy the service
  • Guidance on authoring service manifests
  • Use the label from earlier to identify the pods that compose your service.
    • In your spec.selector you can refer to the label you created earlier:

        app: my-kubernetes-app
      

• Test the service using a web browser.

This exercise builds on many of the previous labs for Docker and Terraform, parts 1, 2 and 3. If you’re attempting these exercises without completing the previous labs, you might need to use this Terraform Azure AKS solution to build a Kubernetes cluster to experiment on.

The solution to the ‘Kubernetes deployment and service’ exercise is available as a kubectl/YAML solution as part of our open-source Devops-Workstream.

---