AWS Network Load Balancer questions

Question

I need a ELB that has a static IP and fronts an auto scaling group.

Looking at the recent announcement, Network Load Balancers can do both of these things. However, when I try setting up a NLB I don't see where to set/get the static IP, nor do I see a way to associate it with an auto scaling group.

When I edit my auto scaling group I search for the NLB previously created in its list of ELBs and the NLB isn't present as a choice.

1) How do I associate an auto scaling group to a NLB?

I'm not sure I understand the concept of target groups with regards to a NLB and auto scaler. If I create a target group, it wants specific instance names or IP's of EC2 instances.

2) Given that those names/IPs change when auto scaler adds/removes instances, how do I know?

3) How/where do I get a static IP for my NLB?

Answer 1

1) use a command like aws autoscaling attach-load-balancers --auto-scaling-group-name my-asg --load-balancer-names my-lb, see http://docs.aws.amazon.com/autoscaling/latest/userguide/attach-load-balancer-asg.html?shortFooter=true

2) you don't need to know, the asg knows

3) attach an Elastic IP, one per subnet the NLB is associated with