heroku へデプロイして
本番環境でサンプルアプリケーションが動作しているか確かめる

$ heroku open

エラーがでた

Application Error
An error occurred in the application and your page could not be served. Please try again in a few moments. If you are the application owner, check your logs for details.

ので、内容を見てみる
$ heroku logs

at=error code=H10 desc="App crashed" method=GET path=/ host=obscure-dawn-8322.herokuapp.com request_id=6d9685c0-3c3d-418e-a570-c5cee9a2085d fwd="133.31.219.68" dyno= connect= service= status=503 bytes=

再起動
・heroku ps:restart web.1 ・heroku ps
しても変わらず・・

$heroku logs --tail

2014-05-17T04:20:52.779552+00:00 heroku[run.4846]: State changed from starting to up 2014-05-17T04:20:52.675062+00:00 heroku[run.4846]: Awaiting client 2014-05-17T04:21:24.116094+00:00 heroku[run.4846]: State changed from up to complete 2014-05-17T04:21:22.677803+00:00 heroku[run.4846]: Error R13 (Attach error) -> Failed to attach to process 2014-05-17T04:21:24.112800+00:00 heroku[run.4846]: Process exited with status 128

これを参考にしたが、timeout になってしまっている

$ heroku run:detached rake db:migrate
$ heroku run rails console

Running `rails console` attached to terminal... up, run.3424 ! ! Timeout awaiting process
timeout になってしまっている

$ telnet rendezvous.runtime.heroku.com 5000
Trying 50.19.103.36... telnet: connect to address 50.19.103.36: Operation timed out telnet: Unable to connect to remote host

エラーもきえず。。