当我尝试安装任何 gem 时 MongoDB 连接错误答案

【问题标题】：MongoDB connection error when I try to install any gem当我尝试安装任何 gem 时 MongoDB 连接错误
【发布时间】：2012-04-25 03:41:46
【问题描述】：

我正在尝试使用 gem 1.8.23、Ruby 1.9.2p318（2012-02-14 修订版 34678）[x86_64-darwin10.8.0]、MongoDB 1.6.2 和 MongoMapper 0.11.0 和 heroku 运行 Rails 3.2.3 . 我能够启动 rails 服务器并在开发和 heroku 上使用 mongoDB。但是每当我尝试安装任何新的东西（例如引导程序）或运行“rails s”命令时，我都会收到以下错误（粘贴在下面）。我认为它与 mongodb 和/或 mongo 映射器有关。我还附上了配置文件。几天以来，我一直坚持这一点，任何提示或想法都受到高度赞赏。不幸的是，这是我的第一个 RoR 应用程序，因此我可能听起来很愚蠢。

错误：


new-host:talker Name$ rails g bootstrap:install
DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from  at /Users/Name/Projects/talker/config/environment.rb:12)
/Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/networking.rb:330:in `rescue in receive_message_on_socket': Operation failed with the following exception: connection closed (Mongo::ConnectionFailure)
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/networking.rb:322:in `receive_message_on_socket'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/networking.rb:188:in `receive_header'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/networking.rb:175:in `receive'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/networking.rb:139:in `receive_message'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/cursor.rb:469:in `block in send_initial_query'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/util/logging.rb:36:in `instrument'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/cursor.rb:467:in `send_initial_query'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/cursor.rb:458:in `refresh'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/cursor.rb:128:in `next'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/db.rb:511:in `command'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/connection.rb:628:in `check_is_master'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/connection.rb:402:in `connect'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/connection.rb:589:in `setup'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo-1.6.2/lib/mongo/connection.rb:114:in `initialize'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo_mapper-0.11.1/lib/mongo_mapper/connection.rb:75:in `new'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/mongo_mapper-0.11.1/lib/mongo_mapper/connection.rb:75:in `connect'
    from /Users/Name/Projects/talker/config/initializers/mogo.rb:28:in `'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:245:in `load'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:245:in `block in load'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:236:in `load_dependency'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:245:in `load'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/engine.rb:588:in `block (2 levels) in '
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/engine.rb:587:in `each'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/engine.rb:587:in `block in '
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:30:in `instance_exec'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:30:in `run'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:55:in `block in run_initializers'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:54:in `each'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:54:in `run_initializers'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/application.rb:136:in `initialize!'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /Users/Name/Projects/talker/config/environment.rb:12:in `'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/application.rb:103:in `require'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/application.rb:103:in `require_environment!'
    from /Users/Name/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/commands.rb:25:in `'
    from script/rails:6:in `require'
    from script/rails:6:in `'
new-host:talker Name$

环境.rb

require File.expand_path('../application', FILE)
Talker::Application.initialize!

mongo.rb

MongoMapper.config = { 
  Rails.env => { 'uri' => ENV['MONGOHQ_URL'] || 'mongodb://localhost:28017' } }
MongoMapper.connect(Rails.env)
if defined?(PhusionPassenger)
   PhusionPassenger.on_event(:starting_worker_process) do |forked|
     MongoMapper.connection.connect if forked
   end
end

【问题讨论】：

连接 MongoDB 肯定失败。 MongoDB 正在运行吗？ MongoMapper.connect(Rails.env) 行是失败的地方。
我可以浏览到 localhost:28017 并查看所有...不明白为什么会抛出错误..

标签： ruby-on-rails ruby-on-rails-3 mongodb mongomapper

【解决方案1】：

您的配置文件说要连接到 localhost:28017，但那是 Web 控制台。你可能想要 localhost:27017。

【讨论】：

我也试过了...我得到 /Users/Name/.rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/uri/common.rb:156 :in `split': bad URI(is not URI?): (URI::InvalidURIError)
你需要'mongodb://localhost:27017'
是的...试过这个 { 'uri' => ENV['MONGOHQ_URL'] || 'mongodb://localhost:27017' } 我得到了错误的 URI 错误。
您还有这个问题吗？
嗯..我基本上在开发环境中注释掉了我的 mongohq.rb 中的所有内容，但将其包含在生产环境中（在 heroku 上）......不知道为什么它在我的开发环境中爆炸。 ..