Deploying a sample app

If you created a new cluster or the cluster you attached is empty, you can optionally run a small deployment in your cluster to exercise the observability features of VMware Tanzu Mission Control. The following deployment procedure creates two deployments (coffee and tea) exposed as services (coffee-svc and tea-svc), each running a different image (nginxdemos/hello and nginxdemos/hello:plain-text).

What to do first

Before you can run a deployment in your cluster, you must have a cluster and be connected to it with kubectl.

If you provisioned your cluster through Tanzu Mission Control, apply a pod security policy to relax the security profile of the cluster, because this example runs an Nginx app that runs as root. For more information, see Relaxing Pod Security in a Provisioned Cluster in Using VMware Tanzu Mission Control.

Deploy a sample app

Do the following to deploy a sample app on your cluster:

1. Create the cafe-services.yaml file with the following contents:

   apiVersion: apps/v1
   kind: Deployment
   metadata:
     name: coffee
   spec:
     replicas: 2
     selector:
       matchLabels:
       app: coffee
     template:
       metadata:
         labels:
           app: coffee
       spec:
         containers:
         - name: coffee
           image: nginxdemos/hello
           ports:
           - containerPort: 80
   ---
   apiVersion: v1
   kind: Service
   metadata:
     name: coffee-svc
   spec:
     ports:
     - port: 80
       targetPort: 80
       protocol: TCP
       name: http
     selector:
       app: coffee
   ---
   apiVersion: apps/v1
   kind: Deployment
   metadata:
     name: tea
   spec:
     replicas: 3
     selector:
       matchLabels:
       app: tea
     template:
       metadata:
         labels:
           app: tea
       spec:
         containers:
         - name: tea
           image: nginxdemos/hello:plain-text
           ports:
           - containerPort: 80
   ---
   apiVersion: v1
   kind: Service
   metadata:
     name: tea-svc
     labels:
   spec:
     ports:
     - port: 80
       targetPort: 80
       protocol: TCP
       name: http
     selector:
       app: tea
   

2. Make sure kubectl is connected to your cluster, and run the following command to create and expose the deployments.

   kubectl create -f cafe-services.yaml