最近我一直在尝试将我的Ruby on Rails应用程序使用Apache和Passenger（不使用RVM）部署到生产环境中，但一直没有成功。当我在浏览器中打开时，会出现以下错误：
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当我在终端输入tail /var/log/apache2/error.log时，会得到以下结果：
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/2.2.0/irb/ruby-lex.rb:230:in `catch'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/2.2.0/irb/ruby-lex.rb:230:in `each_top_level_statement'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/2.2.0/irb.rb:485:in `eval_input'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/2.2.0/irb.rb:395:in `block in start'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/2.2.0/irb.rb:394:in `catch'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/2.2.0/irb.rb:394:in `start'
/home/gre_stag/.rbenv/versions/2.2.2/bin/irb:11:in `<main>'
[ 2015-08-07 12:33:23.9794 4936/7f1db502e700 age/Cor/Req/CheckoutSession.cpp:252 ]: [Client 1-1] Cannot checkout session because a spawning error occurred. The identifier of the error is cfaf3a49. Please see earlier logs for details about the error.
在 /etc/apache2/sites-available/depot.conf 文件中，我有以下代码：
<VirtualHost *:80>
PassengerRuby /home/gre_stag/.rbenv/versions/2.2.2/bin/irb
ServerName depot.local
ServerAlias www.depot.local
ServerAdmin webmaster@localhost
PassengerRoot /usr/lib/ruby/vendor_ruby/phusion_passenger/locations.ini
DocumentRoot /home/gre_stag/RoR/workspace/depot/public
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
<Directory /home/gre_stag/RoR/workspace/depot/public>
Options FollowSymLinks Includes ExecCGI
AllowOverride All
Require all granted
</Directory>
</VirtualHost>
我不确定“PassengerRuby”的值是什么意思。这是我第一次使用Apache，希望能得到任何帮助。 更新： /var/log/apache2/error.log
home/gre_stag/RoR/workspace/Agile_web_dev/depot: An error occured while starting up the preloader.
Error ID: 78043345
Error details saved to: /tmp/passenger-error-zWC057.html
Message from application: YAML syntax error occurred while parsing /home/gre_stag/RoR/workspace/Agile_web_dev/depot/config/database.yml. Please note that YAML must be consistently indented using spaces. Tabs are not allowed. Error: (<unknown>): mapping values are not allowed in this context at line 25 column 11 (RuntimeError)
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/application/configuration.rb:115:in `rescue in database_configuration'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/application/configuration.rb:98:in `database_configuration'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/railtie.rb:117:in `block (2 levels) in <class:Railtie>'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/lazy_load_hooks.rb:45:in `block in run_load_hooks'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/lazy_load_hooks.rb:44:in `each'
/home/gre_stag/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/lazy_load_hooks.rb:44:in `run_load_hooks'
gemifile:
source 'https://rubygems.org'
gem 'rails', '4.2.1'
gem 'sass-rails', '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.1.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
gem 'jquery-rails'
gem 'jquery-ui-rails'
gem 'turbolinks'
gem 'jbuilder', '~> 2.0'
gem 'sdoc', '~> 0.4.0', group: :doc
gem 'bcrypt', '~> 3.1.7'
# Use Unicorn as the app server
# gem 'unicorn'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
group :development, :test do
gem 'byebug'
gem 'web-console', '~> 2.0'
gem 'spring'
gem 'sqlite3'
group :test do
gem 'minitest-reporters', '1.0.5'
gem 'mini_backtrace', '0.1.3'
gem 'guard-minitest', '2.3.1'
end
group :production do
gem 'mysql2'
end
end
tail /var/log/apache2/error.log发生了变化：config.ru:1:in 'new' config.ru:1:in '<main>' /usr/share/passenger/helper-scripts/rack-preloader.rb:107:in 'eval' /usr/share/passenger/helper-scripts/rack-preloader.rb:107:in 'preload_app' /usr/share/passenger/helper-scripts/rack-preloader.rb:153:in '<module:App>' /usr/share/passenger/helper-scripts/rack-preloader.rb:29:in '<module:PhusionPassenger>' /usr/share/passenger/helper-scripts/rack-preloader.rb:28:in '<main>'- Gregory_ynwa