生产模式红宝石应用程序无法运行，麒麟和Nginx

Question

我将在自己的服务器上将我的ruby on rails应用程序部署。 因此，我决定遵循来自地倾海洋的本教程：

https://www.digitalocean.com/community/tutorials/how-to-deploy-a-rails-app-with-unicorn-and-nginx-on-ubuntu-14-04

我配置了我的database.yml，添加了host：localhost并在我的应用目录中配置了rben-var，并很好地迁移了生产数据库。 我无法使用此命令RAILS_ENV = production rails server启动Rails，我想可能是因为我上次将独角兽设置为另一个应用程序的默认设置（您知道我还有另外两个应用程序，我将其部署在服务器很好，但是我从nginx删除了它们的路径）然后我最终在启动sudo vi /etc/init.d/unicorn_drug时创建了config / unicorn.rb，它给了我这个错误：

master failed to start, check stderr log for details

当我看到/shared/log/unicorn.stderr.log中的日志时，我看到以下错误行。 您知道我在这种情况下花了两天时间，但我真的不明白错误是什么：

  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:752:in `call'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:752:in `build_app!'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:129:in `start'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/unicorn-5.1.0/bin/unicorn:126:in `<top (required)>'
  /root/.rbenv/versions/2.2.3/bin/unicorn:23:in `load'
  /root/.rbenv/versions/2.2.3/bin/unicorn:23:in `<top (required)>'
I, [2017-02-27T13:38:21.860366 #1848]  INFO -- : Refreshing Gem list
NameError: uninitialized constant RegistrationController
  /root/drug_api/app/controllers/RegistrationController/confirmations_controller.rb:1:in `<top (required)>'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-5.0.1/lib/active_support/dependencies/interlock.rb:12:in `block in loading'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-5.0.1/lib/active_support/concurrency/share_lock.rb:150:in `exclusive'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-5.0.1/lib/active_support/dependencies/interlock.rb:11:in `loading'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/engine.rb:476:in `block (2 levels) in eager_load!'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/engine.rb:475:in `each'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/engine.rb:475:in `block in eager_load!'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/engine.rb:473:in `each'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/engine.rb:473:in `eager_load!'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/engine.rb:354:in `eager_load!'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/application/finisher.rb:59:in `each'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/application/finisher.rb:59:in `block in <module:Finisher>'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/initializable.rb:30:in `instance_exec'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/initializable.rb:30:in `run'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/initializable.rb:55:in `block in run_initializers'
  /root/.rbenv/versions/2.2.3/lib/ruby/2.2.0/tsort.rb:226:in `block in tsort_each'
  /root/.rbenv/versions/2.2.3/lib/ruby/2.2.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component'
  /root/.rbenv/versions/2.2.3/lib/ruby/2.2.0/tsort.rb:429:in `each_strongly_connected_component_from'
  /root/.rbenv/versions/2.2.3/lib/ruby/2.2.0/tsort.rb:347:in `block in each_strongly_connected_component'
  /root/.rbenv/versions/2.2.3/lib/ruby/2.2.0/tsort.rb:345:in `each'
  /root/.rbenv/versions/2.2.3/lib/ruby/2.2.0/tsort.rb:345:in `call'
  /root/.rbenv/versions/2.2.3/lib/ruby/2.2.0/tsort.rb:345:in `each_strongly_connected_component'
  /root/.rbenv/versions/2.2.3/lib/ruby/2.2.0/tsort.rb:224:in `tsort_each'
  /root/.rbenv/versions/2.2.3/lib/ruby/2.2.0/tsort.rb:203:in `tsort_each'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/initializable.rb:54:in `run_initializers'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/application.rb:352:in `initialize!'
  /root/drug_api/config/environment.rb:5:in `<top (required)>'
  config.ru:4:in `require_relative'
  config.ru:4:in `block in <main>'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rack-2.0.1/lib/rack/builder.rb:55:in `instance_eval'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rack-2.0.1/lib/rack/builder.rb:55:in `initialize'
  config.ru:1:in `new'
  config.ru:1:in `<main>'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/unicorn-5.1.0/lib/unicorn.rb:56:in `eval'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/unicorn-5.1.0/lib/unicorn.rb:56:in `block in builder'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:752:in `call'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:752:in `build_app!'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:129:in `start'
  /root/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/unicorn-5.1.0/bin/unicorn:126:in `<top (required)>'
  /root/.rbenv/versions/2.2.3/bin/unicorn:23:in `load'
  /root/.rbenv/versions/2.2.3/bin/unicorn:23:in `<top (required)>'

Answer 1

问题是未初始化的常量RegistrationController，缺少您的RegistrationController。 似乎您已将目录命名为RegistrationController，并在其下放置了confirmation_controller。 将目录重命名为registration_controller，因为您不能使用首字母大写来命名路径或目录，仅用于类名。

检查行号 错误日志的8：

NameError: uninitialized constant RegistrationController
  /root/drug_api/app/controllers/RegistrationController/confirmations_controller.rb:1:in `<top (required)>'