nginx load balance with IIS backend servers waiting Host header

Question

i have a ubuntu 10.04 with nginx /0.8.54 running as a load balance proxy named: www.local.com

I have two IIS backend servers which responds on Host header request web1.local.com web2.local.com

Problem: When i hit my nginx balancer on www.local.com my backend servers respond with the default server blank webpage (IIS default page) since they are waiting for a right host header (e.g. web1.local.com)

my nginx.conf

 
upstream backend { server web1.local.com:80; server web2.local.com:80; } server {
 
 listen 80; location / { proxy_pass http://backend; proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $proxy_host; } } 
 

any hint ?

Answer 1

Would not proxy_set_header Host $host; solve your problem?

Answer 2

So i solved the issue

The problem was first the missing proxy_set_header Host $host; and i was missing the right virtualhost ServerName www.domain.local name in the apache's conf file.

I was thinking that nginx is sending proxy headers internally using the server name listed in the upstream server list.