Deploying on Nginx and Mongrel--what is http://mongrel?

Hello Group,

I’ve got my Rails app deployed as a Mongrel cluster behind an Nginx
reverse proxy. It’s working great except for one small issue: if I
have code that does a redirect_to , the browser is
redirecting to http://mongrel. What I’d like to have it direct to is
“http:///”. Does that make sense?

Here’s my Nginx config file:

upstream mongrel {
server {
    listen       80;
    server_name  <my domain name>;
    root <my deployment path>;
    location / {
        proxy_pass  http://mongrel;
        proxy_redirect     off;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For