logo标签列表

Ruby on Rails：rake中止，坏的文件描述符。

mysqlruby-on-railsruby
4

我已经搜索了很多，但是没有找到一个能够解决问题的答案。

我完全是个新手，所以当你回答时，请像对待小孩一样解释……或者像对待一颗西兰花一样解释。如果您要让我安装什么东西，请告诉我要写什么。

好吧，我正在尝试遵循这个http://guides.fatfreecrm.com/Setup-Microsoft-Windows.html，并且我已经来到了一个需要写下以下代码的地方： rake db:create RAILS_ENV=production 但是我得到的只有这个：（我已经按照教程安装了"gems install mysql2"和rake，并没有发现任何问题）

C:\RailsInstaller\fat_free_crm>rake db:create RAILS_ENV=production --trace   

** Invoke db:create (first_time)
** Invoke db:load_config (first_time)
** Invoke rails_env (first_time)
** Execute rails_env
** Execute db:load_config
** Execute db:create rake aborted! Bad file descriptor 
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/mysql2-0.2.6-x86-mingw32/li
b/active_record/connection_adapters/mysql2_adapter.rb:312:in `query'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/mysql2-0.2.6-x86-mingw32/li
b/active_record/connection_adapters/mysql2_adapter.rb:312:in `execute'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/mysql2-0.2.6-x86-mingw32/li
b/active_record/connection_adapters/mysql2_adapter.rb:629:in
`configure_connecti on'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/mysql2-0.2.6-x86-mingw32/li
b/active_record/connection_adapters/mysql2_adapter.rb:169:in
`initialize'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/mysql2-0.2.6-x86-mingw32/li
b/active_record/connection_adapters/mysql2_adapter.rb:16:in `new'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/mysql2-0.2.6-x86-mingw32/li
b/active_record/connection_adapters/mysql2_adapter.rb:16:in
`mysql2_connection'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/connection_adapters/abstract/connection_pool.rb:309:in
`new_connection '
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/connection_adapters/abstract/connection_pool.rb:319:in
`checkout_new_c onnection'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/connection_adapters/abstract/connection_pool.rb:241:in
`block (2 level s) in checkout'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/connection_adapters/abstract/connection_pool.rb:236:in
`loop'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/connection_adapters/abstract/connection_pool.rb:236:in
`block in check out'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/monitor.rb:211:in
`mon_synchronize'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/connection_adapters/abstract/connection_pool.rb:233:in
`checkout'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/connection_adapters/abstract/connection_pool.rb:96:in `block
in connec tion'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/monitor.rb:211:in
`mon_synchronize'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/connection_adapters/abstract/connection_pool.rb:95:in
`connection'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/connection_adapters/abstract/connection_pool.rb:404:in
`retrieve_conne ction'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/connection_adapters/abstract/connection_specification.rb:170:in
`retri eve_connection'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/connection_adapters/abstract/connection_specification.rb:144:in
`conne ction'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/railties/databases.rake:83:in `rescue in create_database'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/railties/databases.rake:51:in `create_database'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/railties/databases.rake:40:in `block (3 levels) in <top
(required)>'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/railties/databases.rake:40:in `each'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.7/lib/acti
ve_record/railties/databases.rake:40:in `block (2 levels) in <top
(required)>'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.
rb:205:in `call'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.
rb:205:in `block in execute'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.
rb:200:in `each'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.
rb:200:in `execute'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.
rb:158:in `block in invoke_with_call_chain'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/monitor.rb:211:in
`mon_synchronize'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.
rb:151:in `invoke_with_call_chain'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.
rb:144:in `invoke'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/appli
cation.rb:116:in `invoke_task'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/appli
cation.rb:94:in `block (2 levels) in top_level'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/appli
cation.rb:94:in `each'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/appli
cation.rb:94:in `block in top_level'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/appli
cation.rb:133:in `standard_exception_handling'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/appli
cation.rb:88:in `top_level'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/appli
cation.rb:66:in `block in run'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/appli
cation.rb:133:in `standard_exception_handling'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/appli
cation.rb:63:in `run'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/bin/rake:33:in
`<top (required)>' C:/RailsInstaller/Ruby1.9.3/bin/rake:23:in `load'
C:/RailsInstaller/Ruby1.9.3/bin/rake:23:in `<main>' Tasks: TOP =>
db:create
你真的需要生产环境吗？（RAILS_ENV=production），也就是线上网站吗？如果不需要，那就把这部分删除掉。然后检查config/database.yml文件，确保你已经正确配置了环境。 - TomDunning
1
MySQL的服务是否正常？你尝试过只运行rake db:create吗？ - M.Octavio
我也遇到了同样的问题。而且我正在尝试在开发模式下解决它。当我创建一个新应用程序并尝试执行命令时，它可以成功运行。但在我的情况下，我从SVN中检出了项目，并尝试进行rake db:migrate，但仍然遇到了相同的问题。 - Rohit
1个回答
1

我曾经遇到同样的问题，花了两个小时才解决。也许这些步骤对你也有帮助。

  1. 我假设你正在运行32位mysql，因为64位+32位mysql的问题可能是其他原因引起的。
  2. 确保mysql.dll与已安装的gem（我使用的是mysql2）兼容。
  3. 为了避免问题，请从http://dev.mysql.com/get/Downloads/Connector-C/mysql-connector-c-noinstall-6.0.2-win32.zip/from/pick下载它。
  4. 将mysql.dll复制到你的ruby/bin目录下。

总结：对我来说，问题在于rails mysql2 gem和我机器上安装的mysql不兼容。

网页内容由stack overflow 提供, 点击上面的
可以查看英文原文，
原文链接