Proxy to all backends

[jkolen]

I have a rails app sitting behind nginx and every request is going to both of the mongrel instances. Pages are getting through. However, there are a few db intensive tasks that I don't want run two instances of. I've been playing with proxy_*_timeout and have turned proxy_next_upstream off and it still manages to duplicate each request.  No errors are reported. A single access is recorded for a page as well as a single logging of a destination. Pages are returning with status of 304 and load balancer is dutifully alternating between the two. (When I shut one down I get 502-Bad Gateway errors on alternate requests.) I've included by conf file. I'm running 0.5.33. Any ideas would be appreciated.

Thanks in advance,
John

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user www-data;
worker_processes  2;

pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    tcp_nopush     on;

    keepalive_timeout  65;
    tcp_nodelay        off;

    gzip  on;

    upstream myservers {
      server 127.0.0.1:4010;
      server 127.0.0.1:4011;
    }

    server {
      listen 80;
      root /var/www/qpd/public;

      access_log  /var/log/nginx/access.log;
      error_log   /var/log/nginx/error.log;

      rewrite_log on;

      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;
    	client_max_body_size    10m;
	client_body_buffer_size 128k;
	proxy_connect_timeout   5;
	proxy_send_timeout      90;
	proxy_read_timeout      90;
	proxy_buffers           32 4k;
	proxy_next_upstream     off;

        log_format timing 
           '$remote_addr - $remote_user [$time_local]  $request '
           'upstream_response_time $upstream_response_time '
           'msec $msec request_time $request_time  sent to $upstream_addr $upstream_status';

	access_log  /var/log/nginx/proxy.log timing;
	if (-f $request_filename/index.html) {
	   rewrite (.*) $1/index.html break;
	}
	if (-f $request_filename.html) {
	   rewrite (.*) $1.html break;
	}
	if (!-f $request_filename) {
	   proxy_pass http://myservers;
	   break;
        }
     }
   }
}

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,10652,10652#msg-10652