optional.md

Exercise 2 - Optional

Peering under the covers of node

kubectl get pods -owide

That will list the node the pod is running on. For example you should see:

NODE gke-guestbook-...

gcloud compute ssh <NODE NAME>

sudo docker ps

someuser@<node-name>:~$ exit

The Pod name is automatically assigned as the hostname of the container:

kubectl exec -ti helloworld-service-v1-... /bin/ash

root@helloworld-...:/data# hostname
helloworld-service-....

root@helloworld-...:/app/src# hostname -i
10.104.1.5

root@helloworld-...:/app/src# exit

root@helloworld-...:/data# hostname -i
10.104.1.5

Continue to Exercise 3 - Creating a Kubernetes Service