ruby-on-rails - Rails 应用程序和 Mongrel 的奇怪问题

Question

我最初在 serverfault.com 上发布了一个与此问题相关的问题:https://serverfault.com/questions/152587/apache-mod-proxy-to-another-server

我已经意识到这不是我的服务器设置的问题，而是我的 rails 应用程序。我已经在服务器上设置了这个应用程序，与我在同一台服务器上运行的另一个正常运行的 Rails 应用程序完全相同。当我启动服务器时，我的 mongrel.log 如下所示:

** Daemonized, any open files are closed.  Look at /var/www/osuwebdev/tmp/pids/mongrel.pid and log/mongrel.log for info.
** Starting Mongrel listening at 0.0.0.0:8080
** Starting Rails with production environment...
** Rails loaded.
** Loading any Rails specific GemPlugins
** Signals ready.  TERM => stop.  USR2 => restart.  INT => stop (no restart).
** Rails signals registered.  HUP => reload (without restart).  It might not work well.
** Mongrel 1.1.5 available at 0.0.0.0:8080
** Writing PID file to /var/www/osuwebdev/tmp/pids/mongrel.pid

当我加载一个页面时，它会在日志中弹出:

Wed Jun 30 19:46:10 +0000 2010: Error calling Dispatcher.dispatch #<NoMethodError: undefined method `[]' for nil:NilClass>
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/cgi.rb:108:in `send_cookies'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/cgi.rb:136:in `out'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/http_response.rb:65:in `start'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/cgi.rb:135:in `out'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:81:in `process'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:159:in `process_client'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:158:in `each'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:158:in `process_client'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in `run'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in `initialize'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in `new'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in `run'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:in `initialize'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:in `new'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:in `run'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:282:in `run'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:281:in `each'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:281:in `run'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:128:in `run'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/command.rb:212:in `run'
/var/lib/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281
/usr/local/bin/mongrel_rails:19:in `load'
/usr/local/bin/mongrel_rails:19

我无法弄清楚可能导致此问题的此应用程序的不同之处。

Answer 1

我相信这是 Rack、Mongrel 和 Rails 中错误的奇怪组合。

将此 ruby​​ 代码保存到您的应用程序中 config/mongrel.rb :http://gist.github.com/471663

在您的 config/environment.rb , 在文件的最后添加:require File.join(File.dirname(File.expand_path(FILE)), 'mongrel')

在同一个文件中，在 Rails::initializer.run 块中添加这一行:config.gem "mongrel"

对这里问题的详细解释: https://rails.lighthouseapp.com/projects/8994/tickets/4690-mongrel-doesnt-work-with-rails-238

这绝对适用于 Rails 2.3.8 应用程序，尽管我对它的修补与上面描述的略有不同。