Bind Single Host to Multple Target Groups in AWS Application Load Balancer (ALB)

Question

I'm using an AWS Application Load Balancer (ALB). I have three target groups listening on three different ports like so:

• Target Group 1 - Port 5672
• Target Group 2 - Port 5673
• Target Group 3 - Port 5674

I want to bind a single host name to all three target groups or ports using any algorithm to select a target group (round robin or whatever):

• foo.example.com Binds to Target Group 1, 2, & 3

How can this be achieved?

Answer 1

The point of target groups is that they are targets grouped together. A given request routes to exactly one target group, and all of the targets that can handle the request need to be in the same target group.