从Unicorn配置文件中引用Rails

我正试图按照这三个链接建议的行,对我的独角兽配置文件进行更改,以更改独角兽日志记录:

• http://pivotallabs.com/how-to-split-up-rails-3-x-by-unicorn-workers/
• How to make each unicorn worker of my Rails application log to a different file?
• https://gist.github.com/mudge/5063930

它们都遵循相同的模式(我正在尝试第一种模式),但当我将它们添加到配置中时,我会收到独角兽一遍又一遍重复的相同消息:

ERROR -- : uninitialized constant Unicorn::Configurator::Rails (NameError)

堆栈跟踪指向在Unicorn日志文件中首次使用Rails。我做错了什么,或者我需要改变什么才能让这些片段发挥作用?

我使用Rails 3.2.14,并使用以下方式调用我的服务器:

bundle exec unicorn -c config/unicorn.rb

使用 unicorn_rails 而不是 unicorn 没有区别(相同的错误)。我的配置如下所示:

worker_processes 20
listen ".../unicorn.socket", :backlog => 64
timeout 30
pid ...
stderr_path ...
stdout_path ...
GC.respond_to?(:copy_on_write_friendly=) and
  GC.copy_on_write_friendly = true
check_client_connection false
before_fork do |server, worker|
  # No code
end

after_fork do |server, worker|
  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.establish_connection

  # Snippet from the links above, error occurs within here
  if defined?(ActiveSupport::TaggedLogging) && Rails.logger.kind_of?(ActiveSupport::TaggedLogging)
    ...
  end
end