Heroku rake db:migrate导致错误R13(附加错误) – >无法附加到进程

我在heroku上有一个rails应用程序,我无法运行我最新的数据库更改。 运行heroku run rake db:migrate给了我

 Running `rake db:migrate` attached to terminal... up, run.3167 ! Heroku client internal error. ! Search for help at: https://help.heroku.com ! Or report a bug at: https://github.com/heroku/heroku/issues/new Error: Operation timed out - connect(2) (Errno::ETIMEDOUT) Backtrace: /Users/gregg/.heroku/client/lib/heroku/client/rendezvous.rb:40:in `initialize' /Users/gregg/.heroku/client/lib/heroku/client/rendezvous.rb:40:in `open' /Users/gregg/.heroku/client/lib/heroku/client/rendezvous.rb:40:in `block in start' /usr/local/heroku/ruby/lib/ruby/1.9.1/timeout.rb:68:in `timeout' /Users/gregg/.heroku/client/lib/heroku/client/rendezvous.rb:31:in `start' /Users/gregg/.heroku/client/lib/heroku/command/run.rb:132:in `rendezvous_session' /Users/gregg/.heroku/client/lib/heroku/command/run.rb:119:in `run_attached' /Users/gregg/.heroku/client/lib/heroku/command/run.rb:24:in `index' /Users/gregg/.heroku/client/lib/heroku/command.rb:218:in `run' /Users/gregg/.heroku/client/lib/heroku/cli.rb:28:in `start' /usr/bin/heroku:24:in `' Command: heroku run rake db:migrate Version: heroku-toolbelt/3.2.1 (x86_64-darwin10.8.0) ruby/1.9.3 

当我拖尾日志时,我看到以下内容:

 2014-01-04T20:27:56.438268+00:00 heroku[run.3167]: Awaiting client 2014-01-04T20:27:56.531495+00:00 heroku[run.3167]: State changed from starting to up 2014-01-04T20:26:58.751010+00:00 heroku[router]: at=info method=GETpath=/assets/SanukWebPro-Light.woff host=stormy-savannah-1911.herokuapp.com fwd="98.210.221.215" dyno=web.1 connect=6ms service=134ms status=200 bytes=38568 2014-01-04T20:27:11.027485+00:00 heroku[router]: at=info method=GET path=/articles/new host=stormy-savannah-1911.herokuapp.com fwd="98.210.221.215" dyno=web.1 connect=3ms service=54ms status=200 bytes=7577 2014-01-04T20:28:26.446139+00:00 heroku[run.3167]: Error R13 (Attach error) -> Failed to attach to process 2014-01-04T20:28:27.994826+00:00 heroku[run.3167]: Process exited with status 128 2014-01-04T20:28:28.005837+00:00 heroku[run.3167]: State changed from up to complete 

尝试在后台运行它:

 heroku run:detached rake db:migrate 

https://devcenter.heroku.com/articles/one-off-dynos#running-tasks-in-background

跑完之后

  heroku run:detached rake db:migrate 

我能够成功运行

  heroku run rake db:migrate