ruby-on-rails - Heroku 迁移到 Cedar -“错误：未配置应用程序，没有可运行的内容”

Question

我正在尝试将我的旧 Heroku Ruby on Rails 应用程序从 Bamboo 迁移到 Cedar 堆栈。我正在使用 Ruby 1.8.7、Rails 2.3.11 和 Postgres 数据库。

我按照https://devcenter.heroku.com/articles/cedar-migration中的描述做了所有事情，但是通过应用程序启动，我在 heroku 日志中收到消息：

"ERROR: No application configured, nothing to run"

我的档案：

web: bundle exec puma -C config/puma.rb

配置/puma.rb：

workers Integer(ENV['WEB_CONCURRENCY'] || 2)
threads_count = Integer(ENV['MAX_THREADS'] || 5)
threads threads_count, threads_count

preload_app!

rackup      DefaultRackup
port        ENV['PORT']     || 3000
environment ENV['RACK_ENV'] || 'development'

on_worker_boot do
  # Worker specific setup for Rails 4.1+
  # See: https://devcenter.heroku.com/articles/deploying-rails-applications-with-the-puma-web-server#on-worker-boot
  ActiveRecord::Base.establish_connection
end

宝石文件：

source 'http://rubygems.org'
ruby '1.8.7'
gem 'rake', '~> 0.8.3'
gem 'rails', '2.3.11'
gem 'puma'
gem 'pg', '0.14.1'
gem 'rdoc'

耙文件：

# Add your own tasks in files placed in lib/tasks ending in .rake,
# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.

require(File.join(File.dirname(__FILE__), 'config', 'boot'))

require 'rake'
require 'rake/testtask'
require 'rdoc/task'
require 'tasks/rails'

本地捆绑安装工作正常。我在服务器上调用这样的命令：

$ heroku buildpack:set https://github.com/heroku/heroku-buildpack-ruby#legacy-ruby-1.8.7

将提交推送到 Heroku 并执行成功的数据库迁移后，我仍然收到日志：

2015-03-11T19:09:53.619567+00:00 heroku[web.1]: State changed from crashed to starting
2015-03-11T19:09:53.614080+00:00 heroku[web.1]: Process exited with status 1
2015-03-11T19:09:57.902538+00:00 heroku[web.1]: Starting process with command `bundle exec puma -C config/puma.rb`
2015-03-11T19:10:00.320289+00:00 app[web.1]: [3] * Version 2.11.1 (ruby 1.8.7-p376), codename: Intrepid Squirrel
2015-03-11T19:10:00.320353+00:00 app[web.1]: [3] * Min threads: 5, max threads: 5
2015-03-11T19:10:00.320162+00:00 app[web.1]: [3] Puma starting in cluster mode...
2015-03-11T19:10:00.320497+00:00 app[web.1]: [3] * Preloading application
2015-03-11T19:10:00.320396+00:00 app[web.1]: [3] * Environment: production
2015-03-11T19:10:00.320452+00:00 app[web.1]: [3] * Process workers: 2
2015-03-11T19:10:00.320593+00:00 app[web.1]: [3] ERROR: No application configured, nothing to run
2015-03-11T19:10:01.138174+00:00 heroku[web.1]: Process exited with status 1
2015-03-11T19:10:01.145537+00:00 heroku[web.1]: State changed from starting to crashed

编辑1：

Малъ，谢谢你的回答。我执行了您建议的所有步骤，直到第 8 点。然后我将更改推送到 Heroku。日志现在是这样的：

2015-03-14T19:16:17.146877+00:00 heroku[web.1]: Starting process with command `bundle exec rackup -s puma -p ${PORT:-3000} -E ${RACK_ENV:-development}`
2015-03-14T19:16:18.986661+00:00 app[web.1]: NOTE: Gem.source_index is deprecated, use Specification. It will be removed on or after 2011-11-01.
2015-03-14T19:16:18.986682+00:00 app[web.1]: Gem.source_index called from ./config/../vendor/rails/railties/lib/rails/gem_dependency.rb:21.
2015-03-14T19:16:18.987408+00:00 app[web.1]: NOTE: Gem::SourceIndex#refresh! is deprecated with no replacement. It will be removed on or after 2011-11-01.
2015-03-14T19:16:18.987505+00:00 app[web.1]: NOTE: Gem::SourceIndex#load_gems_in is deprecated with no replacement. It will be removed on or after 2011-11-01.
2015-03-14T19:16:18.987522+00:00 app[web.1]: Gem::SourceIndex#load_gems_in called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:322.
2015-03-14T19:16:18.988403+00:00 app[web.1]: NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
2015-03-14T19:16:18.989216+00:00 app[web.1]: NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
2015-03-14T19:16:18.989842+00:00 app[web.1]: NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
2015-03-14T19:16:18.988482+00:00 app[web.1]: Gem::SourceIndex#add_spec called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:127.
2015-03-14T19:16:18.989863+00:00 app[web.1]: Gem::SourceIndex#add_spec called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:127.
2015-03-14T19:16:18.987432+00:00 app[web.1]: Gem::SourceIndex#refresh! called from ./config/../vendor/rails/railties/lib/rails/vendor_gem_source_index.rb:34.
2015-03-14T19:16:18.989238+00:00 app[web.1]: Gem::SourceIndex#add_spec called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:127.
2015-03-14T19:16:18.990514+00:00 app[web.1]: NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
2015-03-14T19:16:18.994219+00:00 app[web.1]: Gem::SourceIndex#add_spec called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:127.
2015-03-14T19:16:18.994225+00:00 app[web.1]: NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
2015-03-14T19:16:18.994227+00:00 app[web.1]: Gem::SourceIndex#add_spec called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:127.
2015-03-14T19:16:18.994229+00:00 app[web.1]: ./config/environment.rb:43: warning: already initialized constant MONTHNAMES
2015-03-14T19:16:19.112792+00:00 app[web.1]: ./config/../vendor/rails/railties/lib/initializer.rb:271:in `require_frameworks': can't activate rack (~> 1.1.0), already activated rack-1.4.5. Make sure all dependencies are added to Gemfile. (RuntimeError)
2015-03-14T19:16:19.112801+00:00 app[web.1]:    from ./config/../vendor/rails/railties/lib/initializer.rb:113:in `run'
2015-03-14T19:16:19.112798+00:00 app[web.1]:    from ./config/../vendor/rails/railties/lib/initializer.rb:134:in `process'
2015-03-14T19:16:19.112808+00:00 app[web.1]:    from /app/vendor/bundle/ruby/1.8/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'
2015-03-14T19:16:19.112799+00:00 app[web.1]:    from ./config/../vendor/rails/railties/lib/initializer.rb:113:in `send'
2015-03-14T19:16:19.112806+00:00 app[web.1]:    from /app/config.ru:2:in `require'
2015-03-14T19:16:19.112802+00:00 app[web.1]:    from ./config/environment.rb:9
2015-03-14T19:16:19.112811+00:00 app[web.1]:    from /app/config.ru:0:in `new'
2015-03-14T19:16:19.112810+00:00 app[web.1]:    from /app/vendor/bundle/ruby/1.8/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'
2015-03-14T19:16:19.112812+00:00 app[web.1]:    from /app/config.ru:0
2015-03-14T19:16:19.112807+00:00 app[web.1]:    from /app/config.ru:2
2015-03-14T19:16:19.870706+00:00 heroku[web.1]: Process exited with status 1
2015-03-14T19:16:19.882290+00:00 heroku[web.1]: State changed from starting to crashed

然后我尝试将 Gemfile 中的机架版本更新为 1.1.0，调用

$ bundle update rack

并再次上传来源。日志：

2015-03-14T19:08:30.722782+00:00 heroku[web.1]: State changed from crashed to starting
2015-03-14T19:08:35.270101+00:00 heroku[web.1]: Starting process with command `bundle exec rackup -s puma -p ${PORT:-3000} -E ${RACK_ENV:-development}`
2015-03-14T19:08:39.383233+00:00 app[web.1]:    from /app/vendor/bundle/ruby/1.8/gems/rack-1.1.6/lib/rack/handler.rb:21:in `get'
2015-03-14T19:08:39.383209+00:00 app[web.1]: /app/vendor/bundle/ruby/1.8/gems/rack-1.1.6/lib/rack/handler.rb:21:in `const_get': wrong constant name puma (NameError)
2015-03-14T19:08:39.383245+00:00 app[web.1]:    from /app/vendor/bundle/ruby/1.8/bin/rackup:23
2015-03-14T19:08:39.383236+00:00 app[web.1]:    from /app/vendor/bundle/ruby/1.8/gems/rack-1.1.6/lib/rack/server.rb:159:in `server'
2015-03-14T19:08:39.383239+00:00 app[web.1]:    from /app/vendor/bundle/ruby/1.8/gems/rack-1.1.6/lib/rack/server.rb:83:in `start'
2015-03-14T19:08:39.383242+00:00 app[web.1]:    from /app/vendor/bundle/ruby/1.8/gems/rack-1.1.6/bin/rackup:4
2015-03-14T19:08:39.383238+00:00 app[web.1]:    from /app/vendor/bundle/ruby/1.8/gems/rack-1.1.6/lib/rack/server.rb:155:in `start'
2015-03-14T19:08:39.383243+00:00 app[web.1]:    from /app/vendor/bundle/ruby/1.8/bin/rackup:23:in `load'
2015-03-14T19:08:40.314387+00:00 heroku[web.1]: State changed from starting to crashed
2015-03-14T19:08:40.299712+00:00 heroku[web.1]: Process exited with status 1

现在我完全不知道我该如何处理。

编辑2：

我注意到 sed 命令失败并且没有更改 vendor/rails/actionpack/lib/action_controller.rb 所以我添加了缺少的行：

gem 'rack', '~> 1.4.0'

当前日志：

2015-03-14T19:53:59.803670+00:00 heroku[web.1]: State changed from crashed to starting
2015-03-14T19:54:03.524424+00:00 heroku[web.1]: Starting process with command `bundle exec rackup -s puma -p ${PORT:-3000} -E ${RACK_ENV:-development}`
2015-03-14T19:54:05.617313+00:00 app[web.1]: Gem.source_index called from ./config/../vendor/rails/railties/lib/rails/gem_dependency.rb:21.
2015-03-14T19:54:05.618457+00:00 app[web.1]: NOTE: Gem::SourceIndex#refresh! is deprecated with no replacement. It will be removed on or after 2011-11-01.
2015-03-14T19:54:05.621176+00:00 app[web.1]: NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
2015-03-14T19:54:05.617253+00:00 app[web.1]: NOTE: Gem.source_index is deprecated, use Specification. It will be removed on or after 2011-11-01.
2015-03-14T19:54:05.623472+00:00 app[web.1]: Gem::SourceIndex#add_spec called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:127.
2015-03-14T19:54:05.618569+00:00 app[web.1]: NOTE: Gem::SourceIndex#load_gems_in is deprecated with no replacement. It will be removed on or after 2011-11-01.
2015-03-14T19:54:05.620427+00:00 app[web.1]: NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
2015-03-14T19:54:05.620459+00:00 app[web.1]: Gem::SourceIndex#add_spec called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:127.
2015-03-14T19:54:05.622667+00:00 app[web.1]: Gem::SourceIndex#add_spec called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:127.
2015-03-14T19:54:05.618490+00:00 app[web.1]: Gem::SourceIndex#refresh! called from ./config/../vendor/rails/railties/lib/rails/vendor_gem_source_index.rb:34.
2015-03-14T19:54:05.621896+00:00 app[web.1]: NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
2015-03-14T19:54:05.624954+00:00 app[web.1]: ./config/environment.rb:43: warning: already initialized constant MONTHNAMES
2015-03-14T19:54:05.618605+00:00 app[web.1]: Gem::SourceIndex#load_gems_in called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:322.
2015-03-14T19:54:05.751623+00:00 app[web.1]: ./config/../vendor/rails/railties/lib/initializer.rb:271:in `require_frameworks': can't activate rack (~> 1.1.0), already activated rack-1.4.5. Make sure all dependencies are added to Gemfile. (RuntimeError)
2015-03-14T19:54:05.751649+00:00 app[web.1]:    from ./config/../vendor/rails/railties/lib/initializer.rb:134:in `process'
2015-03-14T19:54:05.621928+00:00 app[web.1]: Gem::SourceIndex#add_spec called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:127.
2015-03-14T19:54:05.622636+00:00 app[web.1]: NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
2015-03-14T19:54:05.751727+00:00 app[web.1]:    from ./config/environment.rb:9
2015-03-14T19:54:05.751802+00:00 app[web.1]:    from /app/vendor/bundle/ruby/1.8/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'
2015-03-14T19:54:05.751707+00:00 app[web.1]:    from ./config/../vendor/rails/railties/lib/initializer.rb:113:in `run'
2015-03-14T19:54:05.751687+00:00 app[web.1]:    from ./config/../vendor/rails/railties/lib/initializer.rb:113:in `send'
2015-03-14T19:54:05.751841+00:00 app[web.1]:    from /app/config.ru:0:in `new'
2015-03-14T19:54:05.751765+00:00 app[web.1]:    from /app/config.ru:2
2015-03-14T19:54:05.751746+00:00 app[web.1]:    from /app/config.ru:2:in `require'
2015-03-14T19:54:05.751822+00:00 app[web.1]:    from /app/vendor/bundle/ruby/1.8/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'
2015-03-14T19:54:05.751859+00:00 app[web.1]:    from /app/config.ru:0
2015-03-14T19:54:05.621284+00:00 app[web.1]: Gem::SourceIndex#add_spec called from /app/vendor/ruby-1.8.7/lib/ruby/site_ruby/1.8/rubygems/source_index.rb:127.
2015-03-14T19:54:05.623441+00:00 app[web.1]: NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
2015-03-14T19:54:06.627025+00:00 heroku[web.1]: State changed from starting to crashed
2015-03-14T19:54:06.613881+00:00 heroku[web.1]: Process exited with status 1

编辑3：

我忘了删除 vendor/rails/actionpack/lib/action_controller.rb 中带有 rack 1.1.0 版本的行。现在应用程序已经启动并且像一个魅力一样工作。Малъ，你是我的救星！非常感谢。

score 3 · Accepted Answer

我已经完成了一些步骤来Rails 2.3在 herokucedar-10堆栈上运行我的应用程序。不幸的是，它也将很快被删除，heroku 支持以这种方式回答了。所以：

升级或降级rubygems到1.4.2，需要运行rakefreeze：
```
$ gem update --system 1.4.2
```
添加rake到Gemfile。和捆绑设置。
根据手册，您必须首先将Railsgem 冻结到/vendor文件夹中：
```
$ rake rails:freeze:gems
```

修改文件：vendor/rails/actionpack/lib/action_controller.rb以支持rack 1.4.0版本：

$ sed "s/gem 'rack', '~> 1.1.0'/gem 'rack', '~> 1.4.0'/" -i vendor/rails/actionpack/lib/action_controller.rb

将rack 1.4.0, 和puma 2.3.2gems 添加到Gemfile，并从中删除 railsgem，然后再次捆绑设置：
```
gem 'rack', '~> 1.4.0'
gem 'puma', '~> 2.3.2'
```
注意： config /puma.rb也不再需要了。

将 Procfile更改为puma通过以下方式运行rackup：

$ cat Procfile
web: bundle exec rackup -s puma -p ${PORT:-3000} -E ${RACK_ENV:-development}

添加config.ru以从以下位置运行Rails应用程序rackup：

$ cat config.ru
# RAILS_ROOT/config.ru
require "config/environment"

use Rails::Rack::LogTailer
use Rails::Rack::Static
run ActionController::Dispatcher.new

将更改和新添加的文件添加到 git 中，并将更改推送到 heroku。

由于 herokuPostgreSQL默认在生产中使用，所以创建MySQLdb 实例，当然如果你打算使用它，根据手册：

$ heroku addons:add cleardb:ignite
-----> Adding cleardb to sharp-mountain-4005... done, v18 (free)

$ heroku config | grep CLEARDB_DATABASE_URL
CLEARDB_DATABASE_URL => mysql://adffdadf2341:adf4234@us-cdbr-east.cleardb.com/heroku_db?reconnect=true

$ heroku config:set DATABASE_URL='mysql://adffdadf2341:adf4234@us-cdbr-east.cleardb.com/heroku_db?reconnect=true'

score 0 · Accepted Answer

另外我不得不删除服务器变量

STACK:                      bamboo-ree-1.8.7

并添加

RAILS_ENV:                  production

现在，原始应用程序（不是它的测试副本）可以工作了。

问候，

米哈乌

score 0 · Accepted Answer

无论如何，首先尝试在行尾添加 config.ru (Rails 3.XX)

我的档案

web:  bundle exec puma -C config/puma.rb config.ru

ruby-on-rails - Heroku 迁移到 Cedar -“错误：未配置应用程序，没有可运行的内容”

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