Single Container app in Kubernetes

Run single container app in your K8s cluster

kubectl run meinhelloworld --generator=run-pod/v1 --image=denniszielke/aci-helloworld

Alternative: run a container as part of a deployment

kubectl create deployment hellworlds --image=denniszielke/aci-helloworld

Scale the deployment to three

kubectl scale deployment hellworlds --replicas=3

See what you got

kubectl get pods

Wrap your pod into a service for an individual pod

kubectl expose pod meinhelloworld --port=80 --name=hello-service

Expose your deployment using a service

kubectl expose deployment hellworlds --type=LoadBalancer --port=80

See what you got

kubectl get service

Edit your service to be able to be accessed from the public internet

kubectl edit service/hello-service

This opens up an editor. Exchange ClusterIp to LoadBalancer. Close and save the file. If you want to use nano instead of vi set the following environment variable

KUBE_EDITOR="nano" kubectl edit svc/nginxpod-service

Shortcuts for vi:

i switches to insert mode
CRTL + C switches to command mode
wq! saves your changes and closes the file

Check the state of your service

kubectl get service -w

Wait until your Service got a public address. Then type this address into your webbrowser.