AWS服务器上的独角兽工作进程超时

Question

AWS服务器上的独角兽工作进程超时

3

我正在尝试在AWS服务器上设置Unicorn，但工作进程一直超时，我不知道原因。
我正在使用Ubuntu Server 14.04 LTS AMI，在安装标准的Ruby on Rails安装所需的所有内容。使用rails new，我生成了一个空应用程序，第一次尝试访问似乎很快，但之后工作进程就一直超时，需要很长时间才能提供网页服务。加载标准的WEBrick服务器没有这个问题，并且几乎立即加载页面。我已经尝试回滚ruby和unicorn的多个版本，但没有成功。此行为在本地虚拟机中不会发生。
以下是调试模式下服务器的日志：

    I, [2014-11-04T18:30:13.290599 #17134]  INFO -- : listening on addr=0.0.0.0:5000 fd=10
    I, [2014-11-04T18:30:13.362993 #17134]  INFO -- : master process ready
    I, [2014-11-04T18:30:13.363098 #17137]  INFO -- : worker=0 ready
    I, [2014-11-04T18:30:13.365175 #17140]  INFO -- : worker=1 ready
    I, [2014-11-04T18:30:13.365314 #17142]  INFO -- : worker=2 ready
    Exception 'LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:443 - cannot load such file -- rails/application_helper.rb
    Exception 'LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:352 - cannot load such file -- rails/application_helper.rb
    Exception 'LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:313 - No such file to load -- rails/application_helper
    Exception 'AbstractController::Helpers::MissingHelperError' at /var/lib/gems/2.1.0/gems/actionpack-4.1.7/lib/abstract_controller/helpers.rb:154 - Missing helper file helpers/rails/application_helper.rb
    Exception 'LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:443 - cannot load such file -- rails/welcome_helper.rb
    Exception 'LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:352 - cannot load such file -- rails/welcome_helper.rb
    Exception 'LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:313 - No such file to load -- rails/welcome_helper
    Exception 'AbstractController::Helpers::MissingHelperError' at /var/lib/gems/2.1.0/gems/actionpack-4.1.7/lib/abstract_controller/helpers.rb:154 - Missing helper file helpers/rails/welcome_helper.rb
    **** - - [04/Nov/2014 18:30:13] "GET / HTTP/1.1" 200 - 0.0693
    **** - - [04/Nov/2014 18:30:14] "GET %2Ffavicon.ico HTTP/1.1" 304 - 0.0441
    E, [2014-11-04T18:30:45.395879 #17134] ERROR -- : worker=0 PID:17137 timeout (31s > 30s), killing
    E, [2014-11-04T18:30:45.395995 #17134] ERROR -- : worker=1 PID:17140 timeout (31s > 30s), killing
    E, [2014-11-04T18:30:45.396072 #17134] ERROR -- : worker=2 PID:17142 timeout (31s > 30s), killing
    E, [2014-11-04T18:30:45.397748 #17134] ERROR -- : reaped # worker=2
    E, [2014-11-04T18:30:45.397882 #17134] ERROR -- : worker=0 PID:17137 timeout (31s > 30s), killing
    E, [2014-11-04T18:30:45.397990 #17134] ERROR -- : worker=1 PID:17140 timeout (31s > 30s), killing
    E, [2014-11-04T18:30:45.401016 #17134] ERROR -- : reaped # worker=1
    E, [2014-11-04T18:30:45.401177 #17134] ERROR -- : worker=0 PID:17137 timeout (31s > 30s), killing
    I, [2014-11-04T18:30:45.402352 #17148]  INFO -- : worker=2 ready
    E, [2014-11-04T18:30:45.403784 #17134] ERROR -- : reaped # worker=0
    I, [2014-11-04T18:30:45.405625 #17152]  INFO -- : worker=1 ready
    I, [2014-11-04T18:30:45.406871 #17155]  INFO -- : worker=0 ready
    Exception `EOFError' at /var/lib/gems/2.1.0/gems/unicorn-4.8.1/lib/unicorn/http_request.rb:79 - end of file reached
    Exception `EOFError' at /var/lib/gems/2.1.0/gems/unicorn-4.8.1/lib/unicorn/http_request.rb:79 - end of file reached
    Exception `EOFError' at /var/lib/gems/2.1.0/gems/unicorn-4.8.1/lib/unicorn/http_request.rb:79 - end of file reached
    Exception `EOFError' at /var/lib/gems/2.1.0/gems/unicorn-4.8.1/lib/unicorn/http_request.rb:79 - end of file reached
    Exception `EOFError' at /var/lib/gems/2.1.0/gems/unicorn-4.8.1/lib/unicorn/http_request.rb:79 - end of file reached
    Exception `EOFError' at /var/lib/gems/2.1.0/gems/unicorn-4.8.1/lib/unicorn/http_request.rb:79 - end of file reached
    Exception `EOFError' at /var/lib/gems/2.1.0/gems/unicorn-4.8.1/lib/unicorn/http_request.rb:79 - end of file reached
    Exception `EOFError' at /var/lib/gems/2.1.0/gems/unicorn-4.8.1/lib/unicorn/http_request.rb:79 - end of file reached
    Exception `LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:443 - cannot load such file -- rails/application_helper.rb
    Exception `LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:352 - cannot load such file -- rails/application_helper.rb
    Exception `LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:313 - No such file to load -- rails/application_helper
    Exception `AbstractController::Helpers::MissingHelperError' at /var/lib/gems/2.1.0/gems/actionpack-4.1.7/lib/abstract_controller/helpers.rb:154 - Missing helper file helpers/rails/application_helper.rb
    Exception `LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:443 - cannot load such file -- rails/welcome_helper.rb
    Exception `LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:352 - cannot load such file -- rails/welcome_helper.rb
    Exception `LoadError' at /var/lib/gems/2.1.0/gems/activesupport-4.1.7/lib/active_support/dependencies.rb:313 - No such file to load -- rails/welcome_helper
    Exception `AbstractController::Helpers::MissingHelperError' at /var/lib/gems/2.1.0/gems/actionpack-4.1.7/lib/abstract_controller/helpers.rb:154 - Missing helper file helpers/rails/welcome_helper.rb
    **** - - [04/Nov/2014 18:31:14] "GET / HTTP/1.1" 200 - 0.0680
    Exception 'EOFError' at /var/lib/gems/2.1.0/gems/unicorn-4.8.1/lib/unicorn/http_request.rb:79 - end of file reached
    Exception 'EOFError' at /var/lib/gems/2.1.0/gems/unicorn-4.8.1/lib/unicorn/http_request.rb:79 - end of file reached
    E, [2014-11-04T18:31:45.465765 #17134] ERROR -- : worker=2 PID:17148 timeout (31s > 30s), killing
    E, [2014-11-04T18:31:45.468770 #17134] ERROR -- : reaped # worker=2
    I, [2014-11-04T18:31:45.472177 #17162]  INFO -- : worker=2 ready
    E, [2014-11-04T18:31:49.474506 #17134] ERROR -- : worker=1 PID:17152 timeout (31s > 30s), killing
    E, [2014-11-04T18:31:49.474633 #17134] ERROR -- : worker=0 PID:17155 timeout (31s > 30s), killing
    E, [2014-11-04T18:31:49.476313 #17134] ERROR -- : reaped # worker=1
    E, [2014-11-04T18:31:49.476451 #17134] ERROR -- : worker=0 PID:17155 timeout (31s > 30s), killing
    I, [2014-11-04T18:31:49.481324 #17166]  INFO -- : worker=1 ready
    E, [2014-11-04T18:31:49.481548 #17134] ERROR -- : reaped # worker=0
    I, [2014-11-04T18:31:49.484368 #17169]  INFO -- : worker=0 ready
    E, [2014-11-04T18:32:17.511012 #17134] ERROR -- : worker=2 PID:17162 timeout (31s > 30s), killing
    E, [2014-11-04T18:32:17.512733 #17134] ERROR -- : reaped # worker=2
    I, [2014-11-04T18:32:17.516074 #17174]  INFO -- : worker=2 ready
    E, [2014-11-04T18:32:21.518316 #17134] ERROR -- : worker=0 PID:17169 timeout (31s > 30s), killing
    E, [2014-11-04T18:32:21.520011 #17134] ERROR -- : reaped # worker=0
    I, [2014-11-04T18:32:21.523230 #17177]  INFO -- : worker=0 ready

以下是独角兽配置文件

worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
timeout 30
preload_app true

before_fork do |server, worker|
  Signal.trap 'TERM' do
    puts '独角兽主进程捕捉到 TERM 信号，发送 QUIT 信号关闭自己'
    Process.kill 'QUIT', Process.pid
  end
defined?(ActiveRecord::Base) and
    ActiveRecord::Base.connection.disconnect!
end
after_fork do |server, worker|
  Signal.trap 'TERM' do
    puts '独角兽工作进程捕捉到 TERM 信号，不做任何事情，等待主进程发送 QUIT 信号'
  end
defined?(ActiveRecord::Base) and
    ActiveRecord::Base.establish_connection
end

我注意到了 EOF 错误，并怀疑这可能与超时有关，但我无法确定。

Exception `EOFError' at /var/lib/gems/2.1.0/gems/unicorn-4.8.1/lib/unicorn/http_request.rb:79 - 到达文件结尾

- ipac

超时是针对请求的，看来您正在向独角兽工作进程发送一个永远无法完成的请求。问题似乎不在于独角兽本身。 - Wedge Martin

1个回答

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- ipac · Answer 1

所以问题似乎是我正在私有地运行AWS实例（没有公共IP），然后连接到负载均衡器。移除负载均衡器并直接访问实例可以解决工作人员超时的问题，而且不会出现性能下降。