kubernetes: AWS Changing from External ELB to Internal ELB doesn't work

Is this a BUG REPORT or FEATURE REQUEST?: /kind bug /sig aws

What happened: Adding annotation service.beta.kubernetes.io/aws-load-balancer-internal: 0.0.0.0/0 to an existing, external elastic load balancer doesn’t recreate the load balancer as an internal one. The load balancer will stay as an External load balancer.

What you expected to happen: The external ELB to be removed and then an internal ELB to be created.

How to reproduce it (as minimally and precisely as possible): Create an External ELB, when it’s up and running. Try changing it to an Internal one using annotation service.beta.kubernetes.io/aws-load-balancer-internal: 0.0.0.0/0

Anything else we need to know?: Deleting the service and recreating it with the annotation service.beta.kubernetes.io/aws-load-balancer-internal: 0.0.0.0/0 works as expected since the external ELB gets removed with the service deletion.

Environment:

• Kubernetes version (use kubectl version): Client Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.2", GitCommit:"bdaeafa71f6c7c04636251031f93464384d54963", GitTreeState:"clean", BuildDate:"2017-10-24T19:48:57Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"} Server Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.7", GitCommit:"b30876a5539f09684ff9fde266fda10b37738c9c", GitTreeState:"clean", BuildDate:"2018-01-16T21:52:38Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}

• Cloud provider or hardware configuration: AWS

• OS (e.g. from /etc/os-release): Debian GNU/Linux 8 (jessie)

• Kernel (e.g. uname -a): Linux ip-10-198-9-249 4.4.115-k8s #1 SMP Thu Feb 8 15:37:40 UTC 2018 x86_64 GNU/Linux

• Install tools:

• Others: Kops 1.8.7