part1.yml

parts:

  - name: Part 1
    intro: In this part we will setup a local cluster with minikube, deploy a public image from dockerhub, customize that image, and then finally deploy it inside our local cluster.
    steps:

      - cap: Start up the Kubernetes cluster with Minikube, giving it some extra resources.
        com: minikube start --memory 8000 --cpus 2 --kubernetes-version v1.11.0

      - cap: Enable the Minikube add-ons Heapster and Ingress.
        com: minikube addons enable heapster; minikube addons enable ingress

      - cap: View the Minikube Dashboard, a web UI for managing deployments.
        com: minikube service kubernetes-dashboard --namespace kube-system

      - cap: Deploy the public nginx image from DockerHub into a pod. Nginx is an open source web server that will automatically download from Docker Hub if it’s not available locally.
        com: kubectl run nginx --image nginx --port 80

      - cap: Create a K8s Service for the deployment. This will expose the nginx pod so you can access it with a web browser.
        com: kubectl expose deployment nginx --type NodePort --port 80

      - cap: Launch a web browser to test the service. The nginx welcome page displays, which means the service is up and running.
        com: minikube service nginx
        
      - cap: Delete the nginx deployment and service you created. 
        com: kubectl delete service nginx; kubectl delete deployment nginx

      - cap: Set up the cluster registry by applying a .yaml manifest file.
        com: kubectl apply -f manifests/registry.yaml

      - cap: Wait for the registry to finish deploying. Note that this may take several minutes.
        com: kubectl rollout status deployments/registry

      - cap: View the registry user interface in a web browser.
        com: minikube service registry-ui

      - cap: Let’s make a change to an HTML file in the cloned project. Open the /applications/hello-kenzan/index.html file in your favorite text editor (for example, you can use nano by running the command 'nano applications/hello-kenzan/index.html' in a separate terminal). Change some text inside one of the <p> tags. For example, change “Hello from Kenzan!” to “Hello from Me!”. Save the file. 
        com: echo ''

      - cap: Now let’s build an image, giving it a special name that points to our local cluster registry.
        com: docker build -t 127.0.0.1:30400/hello-kenzan:latest -f applications/hello-kenzan/Dockerfile applications/hello-kenzan

      - cap: We’ve built the image, but before we can push it to the registry, we need to set up a temporary proxy. By default the Docker client can only push to HTTP (not HTTPS) via localhost. To work around this, we’ll set up a Docker container that listens on 127.0.0.1:30400 and forwards to our cluster. First, build the image for our proxy container.
        com: docker build -t socat-registry -f applications/socat/Dockerfile applications/socat

      - cap: Now run the proxy container from the newly created image. (Note that you may see some errors; this is normal as the commands are first making sure there are no previous instances running.)
        com: docker stop socat-registry; docker rm socat-registry; docker run -d -e "REG_IP=`minikube ip`" -e "REG_PORT=30400" --name socat-registry -p 30400:5000 socat-registry

      - cap: With our proxy container up and running, we can now push our hello-kenzan image to the local repository.
        com: docker push 127.0.0.1:30400/hello-kenzan:latest

      - cap: The proxy’s work is done, so you can go ahead and stop it.
        com: docker stop socat-registry;

      - cap: With the image in our cluster registry, the last thing to do is apply the manifest to create and deploy the hello-kenzan pod based on the image.
        com: kubectl apply -f applications/hello-kenzan/k8s/deployment.yaml

      - cap: Launch a web browser and view the service.
        com: minikube service hello-kenzan

      - cap: Delete the hello-kenzan deployment and service you created. 
        com: kubectl delete service hello-kenzan; kubectl delete deployment hello-kenzan