起始軌服務器有一個mysql項目的錯誤

Question

我使用的是紅寶石版本1.9.3 p448和rails版本3.2.13 我所有的寶石都是最新的。

我創建了一個項目，下面的代碼rails new simple_cms -d mysql

但是當我開始用代碼rails s/rails server

軌服務器我得到了以下錯誤

wasif@Bayaw:~/projects/Sites/simple_cms$ rails s 
=> Booting WEBrick 
=> Rails 3.2.13 application starting in development on http://0.0.0.0:3000 
=> Call with -d to detach 
=> Ctrl-C to shutdown server 
Exiting 
/home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/mysql2-0.3.13/lib/mysql2/client.rb:58:in `connect': Access denied for user 'root'@'localhost' (using password: NO) (Mysql2::Error) 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/mysql2-0.3.13/lib/mysql2/client.rb:58:in `initialize' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/mysql2_adapter.rb:16:in `new' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/mysql2_adapter.rb:16:in `mysql2_connection' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:315:in `new_connection' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:325:in `checkout_new_connection' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:247:in `block (2 levels) in checkout' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `loop' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `block in checkout' 
    from /home/wasif/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:239:in `checkout' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:102:in `block in connection' 
    from /home/wasif/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:101:in `connection' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:410:in `retrieve_connection' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_specification.rb:171:in `retrieve_connection' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_specification.rb:145:in `connection' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/railtie.rb:88:in `block in <class:Railtie>' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `instance_exec' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `run' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/initializable.rb:55:in `block in run_initializers' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `each' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `run_initializers' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/application.rb:136:in `initialize!' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in `method_missing' 
    from /home/wasif/projects/Sites/simple_cms/config/environment.rb:5:in `<top (required)>' 
    from /home/wasif/projects/Sites/simple_cms/config.ru:3:in `require' 
    from /home/wasif/projects/Sites/simple_cms/config.ru:3:in `block in <main>' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize' 
    from /home/wasif/projects/Sites/simple_cms/config.ru:in `new' 
    from /home/wasif/projects/Sites/simple_cms/config.ru:in `<main>' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/builder.rb:40:in `eval' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/builder.rb:40:in `parse_file' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/server.rb:200:in `app' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands/server.rb:46:in `app' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/server.rb:304:in `wrapped_app' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/server.rb:254:in `start' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands/server.rb:70:in `start' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands.rb:55:in `block in <top (required)>' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands.rb:50:in `tap' 
    from /home/wasif/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands.rb:50:in `<top (required)>' 
    from script/rails:6:in `require' 
    from script/rails:6:in `<main>' 

請幫助我如何解決這個錯誤...謝謝！

Answer 1

看起來沒有設置密碼。 在你的database.yml中你應該爲你的DB指定密碼。 E.g：如果您已經在開發芻議PC設置密碼：根，它應該是這樣的：

development: 
    adapter: mysql2 
    encoding: utf8 
    reconnect: false 
    database: your_db_name 
    pool: 5 
    username: root 
    password: root 
    socket: 'depending on your os something like:' /tmp/mysql.sock 

此外，我建議不檢查這個文件到您的VCS。複製它，將其稱爲database.example.yml並在其中放入您的配置和密碼的佔位符。