我使用的是Rails 4.0.0, Ruby 2.3和Unicorn。
我的应用程序一直工作得很好，直到有一天我试图在我的Gemfile中添加nem gem。一切都像一个魅力在本地工作，但当我部署到DO使用Capistrano，我被困在一个循环的错误:
E, [2016-09-26T11:40:29.801388 #24545] ERROR -- : reaped #<Process::Status: pid 4280 exit 1> 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 `<class:Vimeo>'
/home/deployer/apps/my_app/releases/20160924171252/app/controllers/webinars_controller.rb:1:in `<top (required)>'
/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 <module:Finisher>'
/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 `<top (required)>'
config.ru:4:in `require'
config.ru:4:in `block in <main>'
/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 `<main>'
/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 `<top (required)>'
/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 `<top (required)>'
/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 <top (required)>'
/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 `<top (required)>'
/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 `<main>'
/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 `<main>'
我不知道到底发生了什么，因为我可以在本地使用这个新Gem中的代码，但是当部署时它不加载，或者不安装。
似乎这可能是在谷歌上搜索的语法问题，但不知道如何确保，因为这是很久以前我还没有添加一个Gem，所以语法错误可能是如此古老。是否有一些工具来检查是否有语法错误?我觉得这很奇怪，因为它是在本地工作的。
我Gemfilesource '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]
这里也有类似的问题。当你改变你的Gemfile时，使用unicorn:reload不会运行你的新代码。
解决了重新启动独角兽而不是重新加载。
如果您正在使用Capistrano，请将部署后触发器更改为invoke 'unicorn:reload':
invoke 'unicorn:stop'
invoke 'unicorn:start'
根据https://github.com/tablexi/capistrano3-unicorn/issues/45 unicorn:restart不能正常工作
我们的问题是独角兽主进程没有正确重启，因为它被杀死了:
/bin/kill -s HUP `cat tmp/pids/unicorn.pid`
这实际上不会杀死独角兽主进程(只是重新加载配置，参见SIGHUP文档)。运行ps -ef | grep 'unicorn'验证
我们的问题解决了，改变独角兽主进程的杀死:
/bin/kill `cat tmp/pids/unicorn.pid`
PS: cat tmp/pids/unicorn.pid只输出独角兽主进程的PID