README.md

Challenge 1

Let's get a pod running.

kubectl run nginx --image=nginx --port=80

You should be able to run kubectl get pods now and see your new nginx container running on the cluster.

Example output:

NAME                     READY     STATUS    RESTARTS   AGE
nginx-3449338310-qh4b9   1/1       Running   0          6m

Some things to be aware of:

• When creating a pod through kubectl, a replicaset consisting of one pod and a deployment is automatically created.
• If you destroy the nginx pod kubectl delete pod <pod_id>, the replicaset and deployments will remain, and a new pod will be created in it's place. You can remove all of them by removing the deployment.
  • To see replicasets, use the kubectl get replicaset command
  • To see deployments, use the kubectl get deployment command
• You can delete the nginx resource by running the kubectl delete deployment nginx command

To scale your new nginx application, you can run the scale command on the deployment as follows:

kubectl scale deployment nginx --replicas=3

Running kubectl get pods will then output something like:

NAME                     READY     STATUS    RESTARTS   AGE
nginx-3449338310-92mm9   1/1       Running   0          41s
nginx-3449338310-q94dj   1/1       Running   0          41s
nginx-3449338310-qh4b9   1/1       Running   0          9m

Now you've done that, check out Challenge 2 to see how to expose Nginx and access it in your browser

From YAML

To create the deployment:

kubectl create -f ./nginx.yml