在 Heroku 上运行 Rails 4 应用程序的问题答案

【问题标题】：Issue running a Rails 4 App on Heroku在 Heroku 上运行 Rails 4 应用程序的问题
【发布时间】：2013-03-07 17:44:37
【问题描述】：

应用程序在开发过程中运行完美。

我在 heroku 上运行应用程序时收到应用程序崩溃错误。

在 gemfile 中使用 ruby '1.9.3'：

2013-03-07T17:52:54+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 6699 -e $RAILS_ENV`
2013-03-07T17:52:54+00:00 heroku[slugc]: Slug compilation finished
2013-03-07T17:52:55+00:00 app[web.1]: bash: bin/rails: No such file or directory
2013-03-07T17:52:56+00:00 heroku[web.1]: Process exited with status 127
2013-03-07T17:52:59+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 38670 -e $RAILS_ENV`
2013-03-07T17:53:00+00:00 app[web.1]: /app/vendor/ruby-1.9.3/lib/ruby/1.9.1/rubygems/dependency.rb:247:in `to_specs': Could not find railties (>= 0) amongst [Ascii85-1.0.2, activerecord-deprecated_finders-0.0.3, afm-0.2.0, angular-ui-bootstrap-rails-0.1.1, angularjs-rails-1.0.5, atomic-1.0.1, bigdecimal-1.1.0, bootstrap-sass-2.3.0.1, bootswatch-rails-0.4.0, builder-3.1.4, bundler-1.3.0.pre.5, coffee-script-2.2.0, coffee-script-source-1.5.0, erubis-2.7.0, execjs-1.4.0, hashery-2.1.0, hike-1.2.1, i18n-0.6.4, io-console-0.3, json-1.7.7, json-1.5.5, mail-2.5.3, mime-types-1.21, minitest-4.6.2, minitest-2.5.1, multi_json-1.6.1, pdf-reader-1.3.1, pg-0.14.1, polyglot-0.3.3, prawn-0.12.0, rack-1.5.2, rack-test-0.6.2, rake-10.0.3, rake-0.9.2.2, rdoc-3.12.2, rdoc-3.9.5, ruby-rc4-0.1.5, sass-3.2.6, sprockets-2.9.0, sprockets-rails-2.0.0.rc3, thor-0.17.0, thread_safe-0.1.0, tilt-1.3.4, treetop-1.4.12, ttfunk-1.0.3, tzinfo-0.3.35, uglifier-1.3.0] (Gem::LoadError)
2013-03-07T17:53:00+00:00 app[web.1]:   from /app/vendor/ruby-1.9.3/lib/ruby/1.9.1/rubygems/dependency.rb:256:in `to_spec'
2013-03-07T17:53:00+00:00 app[web.1]:   from /app/vendor/ruby-1.9.3/lib/ruby/1.9.1/rubygems.rb:1231:in `gem'
2013-03-07T17:53:00+00:00 app[web.1]:   from bin/rails:22:in `<main>'
2013-03-07T17:53:02+00:00 heroku[web.1]: Process exited with status 1
2013-03-07T17:53:02+00:00 heroku[web.1]: State changed from crashed to starting
2013-03-07T17:53:02+00:00 heroku[web.1]: State changed from starting to crashed
2013-03-07T17:53:09+00:00 heroku[api]: Starting process with command `bundle exec rake db:migrate` by brian@plexm.com
2013-03-07T17:53:10+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 11069 -e $RAILS_ENV`
2013-03-07T17:53:11+00:00 app[web.1]: /app/vendor/ruby-1.9.3/lib/ruby/1.9.1/rubygems/dependency.rb:247:in `to_specs': Could not find railties (>= 0) amongst [Ascii85-1.0.2, activerecord-deprecated_finders-0.0.3, afm-0.2.0, angular-ui-bootstrap-rails-0.1.1, angularjs-rails-1.0.5, atomic-1.0.1, bigdecimal-1.1.0, bootstrap-sass-2.3.0.1, bootswatch-rails-0.4.0, builder-3.1.4, bundler-1.3.0.pre.5, coffee-script-2.2.0, coffee-script-source-1.5.0, erubis-2.7.0, execjs-1.4.0, hashery-2.1.0, hike-1.2.1, i18n-0.6.4, io-console-0.3, json-1.7.7, json-1.5.5, mail-2.5.3, mime-types-1.21, minitest-4.6.2, minitest-2.5.1, multi_json-1.6.1, pdf-reader-1.3.1, pg-0.14.1, polyglot-0.3.3, prawn-0.12.0, rack-1.5.2, rack-test-0.6.2, rake-10.0.3, rake-0.9.2.2, rdoc-3.12.2, rdoc-3.9.5, ruby-rc4-0.1.5, sass-3.2.6, sprockets-2.9.0, sprockets-rails-2.0.0.rc3, thor-0.17.0, thread_safe-0.1.0, tilt-1.3.4, treetop-1.4.12, ttfunk-1.0.3, tzinfo-0.3.35, uglifier-1.3.0] (Gem::LoadError)
2013-03-07T17:53:11+00:00 app[web.1]:   from bin/rails:22:in `<main>'
2013-03-07T17:53:11+00:00 app[web.1]:   from /app/vendor/ruby-1.9.3/lib/ruby/1.9.1/rubygems/dependency.rb:256:in `to_spec'
2013-03-07T17:53:11+00:00 app[web.1]:   from /app/vendor/ruby-1.9.3/lib/ruby/1.9.1/rubygems.rb:1231:in `gem'
2013-03-07T17:53:12+00:00 heroku[web.1]: Process exited with status 1
2013-03-07T17:53:12+00:00 heroku[web.1]: State changed from starting to crashed
2013-03-07T17:53:15+00:00 heroku[run.3892]: Awaiting client
2013-03-07T17:53:15+00:00 heroku[run.3892]: Starting process with command `bundle exec rake db:migrate`
2013-03-07T17:53:15+00:00 heroku[run.3892]: State changed from starting to up
2013-03-07T17:53:24+00:00 heroku[run.3892]: Client connection closed. Sending SIGHUP to all processes
2013-03-07T17:53:25+00:00 heroku[run.3892]: State changed from up to complete
2013-03-07T17:53:25+00:00 heroku[run.3892]: Process exited with status 0
2013-03-07T17:53:29+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/ host=bpetro.herokuapp.com fwd="99.104.137.64" dyno= queue= wait= connect= service= status=503 bytes=
2013-03-07T17:53:30+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/favicon.ico host=bpetro.herokuapp.com fwd="99.104.137.64" dyno= queue= wait= connect= service= status=503 bytes=
2013-03-07T17:53:30+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/favicon.ico host=bpetro.herokuapp.com fwd="99.104.137.64" dyno= queue= wait= connect= service= status=503 bytes=

【问题讨论】：

标签： ruby-on-rails ruby heroku ruby-on-rails-4

【解决方案1】：

日志表明 Heroku 正在尝试使用 ruby 1.9.1 部署应用程序。 Rails 4 至少需要 ruby 1.9.3：https://blog.engineyard.com/2013/rails-4-changes

您需要更新您的 Gemfile 以指定 1.9.3：

https://devcenter.heroku.com/articles/ruby-versions

还可以尝试 Gist 中的步骤：https://gist.github.com/peter/3025502

【讨论】：

我已经尝试过使用我发布的第一个 heroku 实例的日志。我制作了另一个 heroku 实例，从一开始就添加了 1.9.3。我仍然有一个问题。我在原始帖子中发布了日志。也许是因为 1.9.1 仍在某处被调用？
我为让 Rails 4 在 Heroku 上运行所采取的步骤的答案添加了一个要点。希望对您有所帮助。
我想指出，其他人创建了一个答案，说他们遇到了同样的问题。该帖子已被删除，可能是因为它缺乏帮助。
不，它并不表示 Ruby 1.9.1。路径中的 1.9.1 是安装 gems 时使用的 C API 版本，用于 1.9.1–1.9.3。实际上，路径的前面是“ruby-1.9.3”。此外，Heroku doesn’t even offer Ruby 1.9.1.
我的最终解决方案是创建一个新应用，按照这篇文章中发布的要点，然后从那里重新启动我的应用。