Nginx-Mongrel almost working; just need a little help

Hello Rails experts. I’m trying to set up Nginx with Mongrel cluster for
my Rails app. I got Nginx and Mongrel cluster to each work. I got Nginx
to serve static files no problem. It displays the Rails intro page, for
example.

And I got Mongrel cluster to run, and when I check each of the nodes
individually it is serving the dynamic Rails pages as expected.

However, when I start them both and then try to access my app, I get the
error “Bad Gateway”.

In the Nginx error log I find each attempt produces three entries like
this…

  1. 2007/09/18 06:53:13 [error] 156690: *1 connect() failed (111:
    Connection refused) while reading response header from upstream, client:
    24.143.132.67, server: www.joehost.com, URL: “/journal”, upstream:
    http://127.0.0.1:3000/journal”, host: “joehost.com
  2. 2007/09/18 06:53:13 [error] 156690: *1 connect() failed (111:
    Connection refused) while reading response header from upstream, client:
    24.143.132.67, server: www.joehost.com, URL: “/journal”, upstream:
    http://127.0.0.1:3001/journal”, host: “joehost.com
  3. 2007/09/18 06:53:13 [error] 156690: *1 connect() failed (111:
    Connection refused) while reading response header from upstream, client:
    24.143.132.67, server: www.joehost.com, URL: “/journal”, upstream:
    http://127.0.0.1:3002/journal”, host: “joehost.com

My Nginx config file contains…

upstream mongrel {
server 127.0.0.1:3000;
server 127.0.0.1:3001;
server 127.0.0.1:3002;
}

server {
listen 80;

 client_max_body_size 1M;

 server_name joehost.com;

 root /home/joe/www/public;

 access_log  logs/nginx.joe.access.log  main;

 if (-f $document_root/system/maintenance.html) {
   rewrite  ^(.*)$  /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) {
     break;
   }

   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://mongrel;
     break;
   }
 }

Any help would be greatly appreciated.

your config looks copy right off from http://brainspl.at/nginx.conf.txt
, seems fine.

try “server_name joehost.com www.joehost.com

there’s also a nginx config generator
“gem install nginx_config_generator”

below is mine,
upstream groups {
ip_hash;
server localhost:3000;
server localhost:3001;
}
server {
listen 80;
server_name groups.wuyasea.com;

            access_log      /u/apps/groups/current/log/access_log

main;
error_log /u/apps/groups/current/log/error_log
info;

            root /u/apps/groups/current/public;

            location / {
              # needed to forward user's IP address to rails
              proxy_set_header  X-Real-IP  $remote_addr;

              # needed for HTTPS
              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://groups;
                break;
              }
            }
    }

Dorren
http://groups.wuyasea.com/group/nginx

Dorren wrote:

your config looks copy right off from http://brainspl.at/nginx.conf.txt
, seems fine.

Thanks for the reply. Yes, it’s adapted from that config file.