I am having issues getting the visitors real IP in my PHP app. I have Kubernetes running in Google Container Engine (master: 1.4.8, node: 1.4.7).

Service definition:

apiVersion: v1
kind: Service
metadata:
    name: app-service
spec:
    type: LoadBalancer # spawning google loadbalancer
    selector:
        name: app # running simple php/nginx container
    ports:
        - port: 80
          targetPort: 80

How can it be that the X-Forwarded-For headers etc. don't get passed through to my php app? I am only getting back the source ip (in php REMOTE_ADDR), which is 10.0.1.1. In Google Cloud I can see the service is using a layer 4 load balancer. Could this be the issue that the real source ip is lost and the X-Forwarded-For header never gets set?

If someone could explain me what is going on, that would be super helpful!

For what its worth, I am using the following nginx configuration in my app container:

location ~ \.php$ {
    fastcgi_pass php-upstream;
    fastcgi_split_path_info ^(.+\.php)(/.*)$;
    include fastcgi_params;
    fastcgi_param  SCRIPT_FILENAME  $realpath_root$fastcgi_script_name;
    fastcgi_param DOCUMENT_ROOT $realpath_root;
}

EDIT I have put my whole application behind CloudFlare, so it is now pointing from CloudFlare http proxy -> GCE Load Balancer. And somehow the X-Forwarded-For headers and all are present! For me it seems like the issue is with the GCE Load Balancer, it is somehow unable to set those headers?