Capture Client IP or Real IP when using AWS LB

[prawen]

Hello,

I'm trying to capture and pass the Client IP or Real IP to the upstream. Below is my deployment model.

Client -> AWS ALB -> Nginx-Ingress deployed on self managed K8s Cluster (1.30) on AWS EC2

I tried using snippet

    nginx.org/location-snippets: |
      proxy_set_header X-ABC-CLIENTIP $proxy_add_x_forwarded_for;

But it is not capturing the real IP, rather giving the private IP.
Also, the header case is not retained. It is shown as X-Abc-Clientip

AWS ALB gives real ip using X-Forwarded-For it seems. May I know how we can configure to use that header as is and get the real IP ?

Does anyone has experience on similar setup ? Any help is appreciated. Thanks.

[j1m-ryan]

Hi @prawen, I will close this so we keep the discussion in #6228