Question

Im using Rails, Passenger (both are 3.0.5) and Nginx on my production server. As I heard, Rails should show public/404.html or public/500.html instead of development errors like ActiveRecord::RecordNotFound or Unknown action but that doesn’t happen. I’ve tried to delete config.ru file and set rack_env or rails_env in nginx.conf but nothing helped.

Here is my nginx.conf:

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    passenger_root /home/makk/.rvm/gems/ruby-1.9.2-p0/gems/passenger-3.0.5;
    passenger_ruby /home/makk/.rvm/bin/passenger_ruby;
    #passenger_ruby /home/makk/.rvm/wrappers/ruby-1.9.2-p0/ruby;

    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    keepalive_timeout  65;

    server {
        listen       80;
        server_name  localhost;

        location / {
            root   /home/makk/projects/1server/deploy/current/public;
            index  index.html index.htm;
            passenger_enabled on;
            rack_env production;

            recursive_error_pages on;

            if (-f /home/makk/projects/1server/maintenance.html) {
              return 503;
            }

            error_page 404 /404.html;
            error_page 500 502 504 /500.html;
            error_page 503 @503;
        }

        location @503 {
            error_page 405 = /maintenance.html;

            # Serve static assets if found.
              if (-f $request_filename) {
              break;
            }
            rewrite ^(.*)$ /maintenance.html break;
        }

        location ~ ^(\/phpmyadmin\/)(.*)$ {
        fastcgi_pass    127.0.0.1:9000;
        fastcgi_index   index.php;
        fastcgi_split_path_info         ^(\/phpmyadmin\/)(.*)$;
        fastcgi_param   SCRIPT_FILENAME /usr/share/phpmyadmin/$fastcgi_path_info;
        include         fastcgi_params;
        }
    }
}

It seems that this question duplicates this one but there are no working suggestions.

UPD: I have both development and production apps on same PC. In production Rails ignores config.consider_all_requests_local = false (in /config/environments/production.rb) due to local_request? method. So one of possible solutions is listed below (taken from here):

# config/initializers/local_request_override.rb
module CustomRescue
  def local_request?
    return false if Rails.env.production? || Rails.env.staging?
    super
  end
end

ActionController::Base.class_eval do
  include CustomRescue
end

Or for Rails 3:

class ActionDispatch::Request
 def local?
   false
 end
end

Answer 1

Move your root declaration up to the “server” block so the server can use the Rails app defined error handling pages when it receives a 5XX, 4XX error.

Or add error_page directives to the location block where passenger is being used so the error handlers can resolve the public/5xx.html in the Rails app public directory when needed.

If your app is not serving up the page and nginx has no visibility to the static page then it can’t serve the page you want.