生产模式 ruby​​ app 不运行，unicorn 和 nginx

Question

我将在我自己的服务器上部署我的 ruby​​ on rails 应用程序。所以我决定按照这个来自数字海洋的教程：

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，我添加了 host:localhost 并在我的应用程序目录中配置了 rben-var 并很好地迁移了生产数据库。 我无法使用此命令启动 rails RAILS_ENV=生产轨道服务器 我想也许是因为我上次将独角兽设置为我的另一个应用程序的默认设置（你知道我还有另外两个应用程序，我将它们部署在服务器上，但我从 nginx 中删除了它们的路径） 然后我创建 config/unicorn.rb 终于当我开始 sudo vi /etc/init.d/unicorn_drug 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。 你知道我在这个案子上花了两天时间，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，您的 RegistrationController 丢失了。似乎您已将目录命名为 RegistrationController 并在其下放置了确认控制器。将目录重命名为registration_controller，导致路径或目录不能以首字母大写命名，仅用于类名。

检查行号。 8 个错误日志：

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