Ruby on rails 3 希罗库；MongoHQ:ActionView:：Template:：Error（操作：#<；Moped:：Protocol:：Commands:：Authentication失败，错误为“auth fails”）

我有一个Rails 3应用程序，其中MongoID 3已成功部署到Heroku（使用MongoHQ）——但后来发生了一些事情（无法准确指出到底是什么），构建开始在Heroku上崩溃

这就是我得到的错误：

---

TLDR:

Moped:：Errors:：AuthenticationFailure（操作：#问题是您的身份验证凭据不再正确。特别是，您尝试身份验证的用户不再存在

原因是，当您执行
rake db:reseed
时，所有数据都将被删除，包括db级别的用户

例如：

  ➜  skadi git:(master) ✗ mongo         
  MongoDB shell version: 2.0.7
  connecting to: test
  > use skadi_development
  switched to db skadi_development
  > db.system.users.find()
  > db.addUser("joe", "passwordForJoe")
  { "n" : 0, "connectionId" : 191, "err" : null, "ok" : 1 }
  {
    "user" : "joe",
    "readOnly" : false,
    "pwd" : "dac588613249fe92703afb262ec53b82",
    "_id" : ObjectId("5030d5181cefbd2b04a99e30")
  }
  > db.system.users.find()
  { "_id" : ObjectId("5030d5181cefbd2b04a99e30"), "user" : "joe", "readOnly" : false, "pwd" : "dac588613249fe92703afb262ec53b82" }
  > exit
  bye

  ➜  skadi git:(master) ✗ rake db:reseed

  ➜  skadi git:(master) ✗ mongo         
  MongoDB shell version: 2.0.7
  connecting to: test
  > use skadi_development
  switched to db skadi_development
  > db.system.users.find()
  => Nothing

因此，当您尝试连接到数据库时，您的凭据不再有效

您可以在您的MongoHQ管理面板中进行检查。您可以通过转到Heroku，选择您的应用程序，单击资源并单击MongoHQ来找到它。然后单击数据库用户选项卡

rake db:reseed
用于按预期工作，但随着新版本的mongoid的出现，它发生了变化。为了删除除system.*之外的所有集合，您可以使用
rake db:purge

您可能需要使用主分支，因为rake任务在稳定版本中尚不可用。或者在您的代码中使用
Mongoid.purge！
，这在稳定版本中有效

详细信息：
您成功连接mongo客户端使用的MongoHQ_URL了吗？只是遇到了完全相同的问题。一切正常，我运行db:reseed清空数据库进行测试，现在出现了此错误。无法找出问题所在。在本地主机上一切正常，我在生产中的mongo连接在五分钟前。
DATABASE_URL        => postgres://rhalppyjrb:xyz@ec2-xyz.compute-1.amazonaws.com/rhalppyjrb
GEM_PATH            => vendor/bundle/ruby/1.9.1
LANG                => en_US.UTF-8
MONGOHQ_URL         => mongodb://heroku:xyz@flame.mongohq.com:27054/app123
PATH                => bin:vendor/bundle/ruby/1.9.1/bin:/usr/local/bin:/usr/bin:/bin
RACK_ENV            => production
RAILS_ENV           => production
SHARED_DATABASE_URL => postgres://rhalppyjrb:xyz@ec2-123.compute-1.amazonaws.com/rhalppyjrb

production:
  sessions:
    default:
          uri: <%= ENV['MONGOHQ_URL'] %>
          options:
            consistency: :strong
            skip_version_check: true
            safe: true

source 'https://rubygems.org'

gem 'bundler', '1.2.0.rc'

ruby '1.9.3'

gem 'rails', '3.2.6'
gem 'thin'
gem 'rmagick', :require => 'RMagick'
gem "carrierwave-mongoid", :git => "git://github.com/jnicklas/carrierwave-mongoid.git", :branch => "mongoid-3.0", :require => 'carrierwave/mongoid'

group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'
  gem 'uglifier', '>= 1.0.3'
  gem "therubyracer", :platform => :ruby
end

gem 'jquery-rails'
gem "haml", ">= 3.1.6"
gem "mongoid", ">= 3.0.3"
gem "devise", ">= 2.1.2"
gem "devise_invitable", ">= 1.0.2"
gem "cancan", ">= 1.6.8"
gem "rolify", ">= 3.1.0"
gem "bootstrap-sass", ">= 2.0.4.0"
gem "simple_form"

group :development do
  gem "guard", ">= 0.6.2"
  gem 'rb-fsevent'
  gem 'growl'
  gem "haml-rails", ">= 0.3.4"
  gem "guard-bundler", ">= 0.1.3"
  gem "guard-rails", ">= 0.0.3"
  gem "guard-livereload", ">= 0.3.0"
  gem "guard-rspec", ">= 0.4.3"
end

group :test do
  gem "database_cleaner", ">= 0.8.0"
  gem "mongoid-rspec", "1.4.6"
  gem "email_spec", ">= 1.2.1"
end

group :development, :test do
  gem "factory_girl_rails", ">= 3.5.0"
  gem "rspec-rails", ">= 2.11.0"
end

  ➜  skadi git:(master) ✗ mongo         
  MongoDB shell version: 2.0.7
  connecting to: test
  > use skadi_development
  switched to db skadi_development
  > db.system.users.find()
  > db.addUser("joe", "passwordForJoe")
  { "n" : 0, "connectionId" : 191, "err" : null, "ok" : 1 }
  {
    "user" : "joe",
    "readOnly" : false,
    "pwd" : "dac588613249fe92703afb262ec53b82",
    "_id" : ObjectId("5030d5181cefbd2b04a99e30")
  }
  > db.system.users.find()
  { "_id" : ObjectId("5030d5181cefbd2b04a99e30"), "user" : "joe", "readOnly" : false, "pwd" : "dac588613249fe92703afb262ec53b82" }
  > exit
  bye

  ➜  skadi git:(master) ✗ rake db:reseed

  ➜  skadi git:(master) ✗ mongo         
  MongoDB shell version: 2.0.7
  connecting to: test
  > use skadi_development
  switched to db skadi_development
  > db.system.users.find()
  => Nothing