k8s service: how to create ELB in a private subnet

For a k8s service in a AWS private subnet. By default it won’t create ELB. In order to get k8s doing all the grunt work of ELB creation, register k8s worker instance with the ELB, add listener, tag it property. there is a magic annotation here.

magic annotation

kubectl annotate the service

kubectl --namespace=guestbook annotate service frontend  service.beta.kubernetes.io/aws-load-balancer-internal=0.0.0.0/0