Lab 2.2 - Deploy Hello-World Using Route

Now that CIS is up and running, let’s deploy an application and leverage CIS.

For this lab we’ll use a simple pre-configured docker image called “f5-hello-world”. It can be found on docker hub at f5devcentral/f5-hello-world

App Deployment

On kube-master1 we will create all the required files:

  1. Create a file called deployment-hello-world.yaml

    Tip

    Use the file in ~/agilitydocs/docs/class2/openshift

    deployment-hello-world.yaml
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    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: f5-hello-world-web
      namespace: default
    spec:
      replicas: 2
      selector:
        matchLabels:
          app: f5-hello-world-web
      template:
        metadata:
          labels:
            app: f5-hello-world-web
        spec:
          containers:
          - env:
            - name: service_name
              value: f5-hello-world-web
            image: f5devcentral/f5-hello-world:develop
            imagePullPolicy: IfNotPresent
            name: f5-hello-world-web
            ports:
            - containerPort: 8080
              protocol: TCP
    
  2. Create a file called clusterip-service-hello-world.yaml

    Tip

    Use the file in ~/agilitydocs/docs/class2/openshift

    clusterip-service-hello-world.yaml
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    apiVersion: v1
    kind: Service
    metadata:
      name: f5-hello-world-web
      namespace: default
      labels:
        app: f5-hello-world-web
        cis.f5.com/as3-tenant: AS3
        cis.f5.com/as3-app: A1
        cis.f5.com/as3-pool: web_pool
    spec:
      ports:
      - name: f5-hello-world-web
        port: 8080
        protocol: TCP
        targetPort: 8080
      type: ClusterIP
      selector:
        app: f5-hello-world-web
    
  3. Create a file called route-hello-world.yaml

    Tip

    Use the file in ~/agilitydocs/docs/class2/openshift

    route-hello-world.yaml
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      apiVersion: v1
      kind: Route
      metadata:
        labels:
          f5type: hello-world
          name: f5-hello-world-web
        name: f5-hello-world-web
        namespace: default
        annotations:
          virtual-server.f5.com/balance: round-robin
          virtual-server.f5.com/health: |
            [
              {
                "path": "mysite.f5demo.com/",
                "send": "HTTP GET /",
                "interval": 5,
                "timeout": 10
              }
            ]
      spec:
        host: mysite.f5demo.com
        path: "/"
        port:
          targetPort: 8080
        to:
          kind: Service
          name: f5-hello-world-web
    
  4. We can now launch our application:

    oc create -f deployment-hello-world.yaml
    oc create -f clusterip-service-hello-world.yaml
    oc create -f route-hello-world.yaml
    
    ../../_images/f5-container-connector-launch-app-clusterip-route.png
  5. To check the status of our deployment, you can run the following commands:

    oc get pods -o wide
    
    ../../_images/f5-hello-world-cluster-route-pods.png
    oc describe svc f5-hello-world
    
    ../../_images/f5-cis-describe-clusterip-route-service.png

    Attention

    To understand and test the new app pay attention to the Endpoints value, this shows our 2 instances (defined as replicas in our deployment file) and the overlay network IP assigned to the pod.

  6. Now that we have deployed our application sucessfully, we can check the configuration on bigip1. Switch back to the open management session on firefox.

    Warning

    Don’t forget to select the “okd” partition or you’ll see nothing.

    Goto Local Traffic ‣ Virtual Servers

    With “Route” you’ll seee two virtual servers defined. “okd_http_vs” and “okd_https_vs”, listening on port 80 and 443.

    ../../_images/f5-container-connector-check-app-route-bigipconfig1.png

    These Virtuals use an LTM Policy to direct traffic based on the host header. You can view this from the BIG-IP GUI at Local Traffic ‣ Virtual Servers ‣ Policies and click Published Policy ‣ “openshift_insecure_routes”

    ../../_images/f5-check-ltm-policy-route1.png
  7. Check the Pools to see a new pool and the associated pool members:

    GoTo: Local Traffic ‣ Pools and selec the “openshift_default_f5-hello-world-web” pool. Click the Members tab.

    ../../_images/f5-container-connector-check-app-route-pool-clusterip.png

    Note

    You can see that the pool members IP addresses are assigned from the overlay network (ClusterIP mode)

  8. Access your web application via firefox on the jumpbox.

    Note

    Select the “mysite.f5demo.com” shortcut or type http://mysite.f5demo.com in the URL field.

    ../../_images/f5-container-connector-access-app3.png

    Note

    Why can’t we use http://10.1.1.4 to open the web server?

  9. Delete Hello-World

    Important

    Do not skip this step. Instead of reusing some of these objects, the next lab we will re-deploy them to avoid conflicts and errors.

    oc delete -f route-hello-world.yaml
    oc delete -f clusterip-service-hello-world.yaml
    oc delete -f deployment-hello-world.yaml
    

    Attention

    Validate the objects are removed via the management console. Local Traffic ‣ Virtual Servers