AWS Application Load balancer path routing issue

Question

I have a fairly comprehensive application load balancer set up that routes based on host name.

However, I'm trying to introduce the following but can't get the path routing to work.

i.e. I have them in this order.

What I'm seeing is everything is routed to Target Group A.

I have Rule 1 set to host licence.example.com, path: /api/* And Rule 2 set to host licence.example.com

I've tried changing the order by swapping them around. And I've tried adding a path to rule 2 as /* but it doesn't work.

Is the AWS load balancer not capable of this most basic configuration? Am I going to have to throw it out and use nginx?

hookenz · Accepted Answer · 2018-05-03 00:12:15Z

2

Two problems.

The order displayed in the UI is important. Rules higher up are list are a higher priority. So first I had to ensure the match with the path occurred first.
The requests to /api/* come through to the application with the path /api/ included. No rewrite like nginx which would strip it off. So the fix was to make a small change to the app listening at Target Group B to expect the /api/ path. I made this a config value and then it all worked.

answered May 3, 2018 at 0:12

hookenz

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1 Comment

Hi @Matt can you please have a look at this question stackoverflow.com/questions/58640453/… Any input would be highly appreciated