sample nginx config for proxying rails.

gistfile1.txt

    upstream thin {
        server 127.0.0.1:9000;
        server 127.0.0.1:9001;
        server 127.0.0.1:9002;
    }

    server {
        listen       80;
        server_name  pbcore.vermicel.li;

        access_log  /var/log/nginx/pbcore.access.log;

        root /var/www/pbcore/current/public;
        if (-f /var/www/pbcore/shared/system/maintenance.html) {
            rewrite  ^(.*)$  /system/maintenance.html last;
            break;
        }

        location / {
            proxy_set_header  X-Real-IP  $remote_addr;
            proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header  Host $http_host;
            proxy_redirect    false;
            proxy_max_temp_file_size 0;

            if (!-f $request_filename) {
                proxy_pass http://thin;
                break;
            }
        }

        error_page  404              /404.html;
        location = /404.html {
            root   /usr/share/nginx/html;
        }

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /usr/share/nginx/html;
        }
    }