ruby-on-rails - rails 环境 mongoid 连接问题

Question

我有 Rails 应用程序 3.2.17，部署在 staging 环境中，unicorn 4.6.3 由 bluepill 0.0.66 使用 mongid 3.1.5 监控

当我为暂存环境部署时，所有工作都发现包括 active_record，但 mongoid 查询除外，结果出现以下错误:

Error during failsafe response: 
Problem:
  No configuration could be found for a session named 'default'.
Summary:
  When attempting to create the new session, Mongoid could not find a session configuration for the name: 'default'. This is necessary in order to know the host, port, and options needed to connect.
Resolution:
  Double check your mongoid.yml to make sure under the sessions key that a configuration exists for 'default'. If you have set the configuration programatically, ensure that 'default' exists in the configuration hash.

部署站点中的mongoid.yml文件

staging:
  sessions:
    default:
      database: mydb
      username: user
      password: password
      hosts:
        - localhost:27017
      options:
  options:

部署站中的myapp.pill文件

Bluepill.application('myapp', log_file: '/var/log/bluepill/myapp.log') do |app|
    app.process('myapp-app') do |process|
        process.pid_file = '/home/user/myapp/current/tmp/pids/unicorn.pid'
        process.working_dir = '/home/user/myapp/current'
        process.start_command = '/home/user/.gem/ruby/1.9.1/bin/bundle exec unicorn -c config/unicorn.rb -D -E staging'
        process.stop_command = 'kill -QUIT {{PID}}'
        process.restart_command = 'kill -USR2 {{PID}}'
        process.uid = 'user'
        process.gid = 'user'
        process.start_grace_time 30.seconds
        process.stop_grace_time 30.seconds
        process.restart_grace_time 60.seconds
        process.monitor_children do |child_process|
            child_process.stop_command 'kill -QUIT {{PID}}'
            child_process.checks(:mem_usage,
                :every => 30.seconds,
                :below => 1024.megabytes,
                :times => [3,4]
            )
            child_process.checks(:cpu_usage,
                :every => 30.seconds,
                :below => 90,
                :times => [3,4]
            )
        end
    end
end

我怀疑 mongoid 没有收到 RAILS_ENV，但我不确定，我检查了 mongoid.yml 中的缩进。应该还有别的原因我没查出来。

Answer 1

在/config/application.rb 中输入

require 'mongoid'

Mongoid.load!(File.expand_path('mongoid.yml', './config'))

它可能是通过初始化器来完成的。