Kubernetes commands for deploying Rails todo from private registry

rails-todo-hab-kube.sh

# fetch the hostname of the Azure Container Registry
registry=$(az acr list -g habitat-k8s --query "[?starts_with(name, 'habk8s')] | [0].loginServer" -o tsv)

# run the image sourced from the private repository, and expose port 3000
kubectl run rails-todo --image=${registry}/rails-todo:latest --port 3000

# watch our pod provision
watch kubectl get po
# once the pod is running exit watch

# expose the deployment to the world on port 80
kubectl expose deployment rails-todo --port=80 --target-port=3000 --type=LoadBalancer
# wait for the Public IP to be exposed
watch kubectl get services
# once the service has a public IP, exit watch, and open a browser to the IP and see the app

# scale up to 5 instances
kubectl scale --replicas=5 deployments/rails-todo
watch kubectl get po
# once the containers have started, exit watch, you are now running 5 instances of the app