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## Testing your Kubernetes cluster.

To validate that your node(s) have been added, run:

```sh
kubectl get nodes
```

That should show something like:

```console
NAME           LABELS                                 STATUS
10.240.99.26   kubernetes.io/hostname=10.240.99.26    Ready
127.0.0.1      kubernetes.io/hostname=127.0.0.1       Ready
```

If the status of any node is `Unknown` or `NotReady` your cluster is broken, double check that all containers are running properly, and if all else fails, contact us on [Slack](../../troubleshooting.md#slack).

### Run an application

```sh
kubectl -s http://localhost:8080 run nginx --image=nginx --port=80
```

now run `docker ps` you should see nginx running.  You may need to wait a few minutes for the image to get pulled.

### Expose it as a service

```sh
kubectl expose rc nginx --port=80
```

This should print:

```console
NAME         CLUSTER_IP       EXTERNAL_IP       PORT(S)                SELECTOR     AGE
nginx        10.179.240.1     <none>            80/TCP                 run=nginx    8d
```

Hit the webserver:

```sh
curl <insert-ip-from-above-here>
```

Note that you will need run this curl command on your boot2docker VM if you are running on OS X.

### Scaling

Now try to scale up the nginx you created before:

```sh
kubectl scale rc nginx --replicas=3
```

And list the pods

```sh
kubectl get pods
```

You should see pods landing on the newly added machine.




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