独角兽陷入困境：刷新gem列表
我正在使用Rails 4.0.0，Ruby 2.3和Unicorn。
我的应用程序工作正常，直到我尝试在我的Gemfile中添加nem gem。 一切都像本地的魅力一样，但是当我使用Capistrano部署到DO时，我陷入了错误循环：
E, [2016-09-26T11:40:29.801388 #24545] ERROR -- : reaped # worker=0 I, [2016-09-26T11:40:29.802952 #4287] INFO -- : Refreshing Gem list /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/activesupport-4.0.0/lib/active_support/values/time_zone.rb:282: warning: circular argument reference - now E, [2016-09-26T11:40:32.116762 #4287] ERROR -- : uninitialized constant Vimeo::HTTParty (NameError) /home/deployer/apps/my_app/releases/20160924171252/app/controllers/webinars_controller.rb:2:in `' /home/deployer/apps/my_app/releases/20160924171252/app/controllers/webinars_controller.rb:1:in `' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/engine.rb:465:in `block (2 levels) in eager_load!' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/engine.rb:464:in `each' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/engine.rb:464:in `block in eager_load!' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/engine.rb:462:in `each' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/engine.rb:462:in `eager_load!' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/engine.rb:347:in `eager_load!' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/application/finisher.rb:56:in `each' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/application/finisher.rb:56:in `block in ' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `instance_exec' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `run' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/initializable.rb:55:in `block in run_initializers' /home/deployer/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:228:in `block in tsort_each' /home/deployer/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component' /home/deployer/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:431:in `each_strongly_connected_component_from' /home/deployer/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:349:in `block in each_strongly_connected_component' /home/deployer/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:347:in `each' /home/deployer/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:347:in `call' /home/deployer/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:347:in `each_strongly_connected_component' /home/deployer/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:226:in `tsort_each' /home/deployer/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/tsort.rb:205:in `tsort_each' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/initializable.rb:54:in `run_initializers' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/application.rb:215:in `initialize!' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:30:in `method_missing' /home/deployer/apps/my_app/releases/20160924171252/config/environment.rb:5:in `' config.ru:4:in `require' config.ru:4:in `block in ' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:55:in `instance_eval' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:55:in `initialize' config.ru:1:in `new' config.ru:1:in `' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn.rb:56:in `eval' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn.rb:56:in `block in builder' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:752:in `build_app!' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:617:in `init_worker_process' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:639:in `worker_loop' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:508:in `spawn_missing_workers' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:519:in `maintain_worker_count' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:283:in `join' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/bin/unicorn:126:in `' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/bin/unicorn:23:in `load' /home/deployer/apps/my_app/shared/bundle/ruby/2.3.0/bin/unicorn:23:in `' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/lib/bundler/cli/exec.rb:74:in `load' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/lib/bundler/cli/exec.rb:74:in `kernel_load' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/lib/bundler/cli/exec.rb:27:in `run' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/lib/bundler/cli.rb:332:in `exec' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/lib/bundler/vendor/thor/lib/thor.rb:359:in `dispatch' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/lib/bundler/cli.rb:20:in `dispatch' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/lib/bundler/vendor/thor/lib/thor/base.rb:440:in `start' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/lib/bundler/cli.rb:11:in `start' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/exe/bundle:34:in `block in ' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/lib/bundler/friendly_errors.rb:100:in `with_friendly_errors' /home/deployer/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.1/exe/bundle:26:in `' /home/deployer/.rvm/gems/ruby-2.3.0/bin/bundle:23:in `load' /home/deployer/.rvm/gems/ruby-2.3.0/bin/bundle:23:in `' /home/deployer/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `eval' /home/deployer/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `' 我不确切知道发生了什么，因为我可以在本地使用这个新Gem的代码但是在部署时它不会加载或不安装。
似乎可能是在Google上搜索的语法问题，但不知道如何确定，因为很久以前我还没有添加Gem，所以语法错误可能已经很久了。 是否有一些工具来检查是否存在语法错误？ 我认为这很奇怪，因为它在本地工作。
我的Gemfile
source 'https://rubygems.org' # Bundle edge Rails instead: gem 'rails', github: 'rails/rails' gem 'rails', '4.0.0' # Use SCSS for stylesheets gem 'sass-rails', '~> 4.0.0' # Use Uglifier as compressor for JavaScript assets gem 'uglifier' # Use CoffeeScript for .js.coffee assets and views gem 'coffee-rails', '~> 4.0.0' # See https://github.com/sstephenson/execjs#readme for more supported runtimes # gem 'therubyracer', platforms: :ruby # Use jquery as the JavaScript library gem 'jquery-rails' # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks gem 'turbolinks' gem 'jquery-turbolinks' # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder gem 'jbuilder', '~> 1.2' # gem 'anjlab-bootstrap-rails', :require => 'bootstrap-rails', :github => 'anjlab/bootstrap-rails' gem 'bootstrap-sass', '~> 3.2.0' gem 'devise' gem 'paperclip', '~> 3.0' gem 'aws-sdk', '~> 1' gem 'nokogiri', '~> 1.5.1' gem 'wicked_pdf' # gem "wkhtmltopdf-heroku", :git => 'git://github.com/camdez/wkhtmltopdf-heroku.git' gem "wkhtmltopdf-binary" gem 'newrelic_rpm' gem 'validates_email_format_of' # gem 'will_paginate', '~> 3.0.6' gem 'will_paginate-bootstrap' gem 'iconv' gem 'roo' gem 'roo-xls' gem 'airbrake', '~> 4.3' gem "paranoia", "~> 2.0" gem 'ransack' gem 'omniauth-facebook' gem 'omniauth-google-oauth2' gem 'activerecord-session_store', github: 'rails/activerecord-session_store' gem 'nested_form_fields' gem 'httparty' group :doc do # bundle exec rake doc:rails generates the API under doc/api. # gem 'sdoc', require: false end # Use ActiveModel has_secure_password # gem 'bcrypt-ruby', '~> 3.0.0' # Use unicorn as the app server # Use Capistrano for deployment group :development do gem 'sqlite3' gem 'awesome_print' gem "capistrano", "~> 3.6" gem 'capistrano-rails', '~> 1.1' gem 'capistrano-rvm' gem 'capistrano3-unicorn' gem 'capistrano-local-precompile', require: false end group :production do gem 'unicorn' gem 'pg' gem 'rails_12factor' end # Use debugger # gem 'debugger', group: [:development, :test]
类似的问题在这里 当您使用unicorn:reload更改Gemfile时会发生这种情况unicorn:reload不会运行新代码。
解决了重启独角兽而不是重新加载它。
如果您使用的是Capistrano，请将after deploy部署触发器从invoke 'unicorn:reload'更改为：
invoke 'unicorn:stop' invoke 'unicorn:start'
根据https://github.com/tablexi/capistrano3-unicorn/issues/45 unicorn:restart不能正常工作。
我们的问题是unicorn主进程没有正确重启，因为它被杀死：
/bin/kill -s HUP `cat tmp/pids/unicorn.pid`
哪个实际上没有杀死unicorn主进程（只重新加载配置，请参阅SIGHUP文档）。 通过运行ps -ef | grep 'unicorn'validation ps -ef | grep 'unicorn' 。
我们的问题解决了改变unicorn主进程的杀戮：
/bin/kill `cat tmp/pids/unicorn.pid`
PS： cat tmp/pids/unicorn.pid只输出独角兽主进程的PID。