Proxy pass confusion

[Jon Drukman]

Here is my server setup:

Amazon load balancer (loadbalancer.aws.com) -> nginx servers in
reverse-proxy/caching mode -> back end PHP servers

If I visit the nginx server directly in my browser, everything works
perfectly.

If I visit loadbalancer.aws.com, the nginx server redirects me to
http://decupstream, which is what I named the upstream block in my
configuration.  The nginx.conf looks like:

 upstream decupstream {
        server 10.167.1.50:8080;
        server 10.160.242.232:8080;
        server 10.222.218.126:8080;
    }

    proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=gop2012:10m;

    server {
        listen       80;
        server_name  gop-proxy.mycompany.com;

        location / {
          proxy_pass            http://decupstream;
          proxy_cache           gop;
          proxy_cache_valid     10m;
          proxy_cache_use_stale error timeout invalid_header http_500;
          proxy_next_upstream   error timeout invalid_header http_500;
          proxy_cache_lock      on;
          proxy_ignore_headers Cache-Control Expires;
          proxy_set_header Host "gop.mycompany.com";
        }
    }


How do I get nginx to forward requests to the Apache/PHP servers even if
they don't come in directly to the nginx box?

-jsd-
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