For this first exercise you’ll be using this Katacoda playground.
Create a pod with two containers (a long-running app and a shell):
$ kubectl apply -f http://mhausenblas.info/container-networking/manifests/pod.yaml
$ watch kubectl get po
When you see the pod status Running (ca. after a minute), you can use the shell container in the pod to query the app container (serving on port 9876):
$ kubectl exec somepod -it -c=shell bash
[root@somepod /]# curl localhost:9876/endpoint0
Using this Katacoda scenario you will create Kubernetes services of type “ClusterIP”, “Target Ports”, “NodePort”, “External IPs” as well as “Load Balancer” and explore them.
Using this Katacoda scenario you will deploy an Ingress controller and an Ingress resource that you’ll be using to route traffic from the outside world to different services.