Rails 3 - 移动到/启动生产服务器 - 生产数据库未配置？

Question

我正在寻求部署我的第一个 Rails 应用程序，但遇到了一些问题。首先，开发服务器中一切正常，所以我想我已经可以开始了。在无法将应用程序部署到我的主机后，我第一次尝试在生产模式下启动服务器，收到几个错误。

出于好奇，我创建了一个新的应用程序，完全新鲜，无需编辑任何代码。我的数据库遇到了几乎相同的错误：

/home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:62:in `establish_connection': =production database is not configured (ActiveRecord::AdapterNotSpecified)
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:55:in `establish_connection'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/railtie.rb:59:in `block (2 levels) in <class:Railtie>'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.3/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.3/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.3/lib/active_support/lazy_load_hooks.rb:26:in `on_load'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/railtie.rb:57:in `block in <class:Railtie>'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/initializable.rb:25:in `instance_exec'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/initializable.rb:25:in `run'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/initializable.rb:50:in `block in run_initializers'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/initializable.rb:49:in `each'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/initializable.rb:49:in `run_initializers'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/application.rb:134:in `initialize!'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/application.rb:77:in `method_missing'
from /home/sweiss/testapp/config/environment.rb:6:in `<top (required)>'
from /home/sweiss/testapp/config.ru:3:in `require'
from /home/sweiss/testapp/config.ru:3:in `block in <main>'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/rack-1.2.1/lib/rack/builder.rb:46:in `instance_eval'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/rack-1.2.1/lib/rack/builder.rb:46:in `initialize'
from /home/sweiss/testapp/config.ru:1:in `new'
from /home/sweiss/testapp/config.ru:1:in `<main>'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/rack-1.2.1/lib/rack/builder.rb:35:in `eval'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/rack-1.2.1/lib/rack/builder.rb:35:in `parse_file'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/rack-1.2.1/lib/rack/server.rb:162:in `app'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/rack-1.2.1/lib/rack/server.rb:248:in `wrapped_app'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/rack-1.2.1/lib/rack/server.rb:213:in `start'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/commands/server.rb:65:in `start'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/commands.rb:30:in `block in <top (required)>'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/commands.rb:27:in `tap'
from /home/sweiss/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/commands.rb:27:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

有人在尝试启动生产服务器时遇到过这种情况吗？为了更好的衡量，database.yml 是 sqlite3 的以下默认值：

production:
  adapter: sqlite3
  database: db/production.sqlite3
  pool: 5
  timeout: 5000

我验证了 .yml 没有选项卡（并不是说它应该自动生成）。

不管怎样，我很感谢你的帮助。

Answer 1

你安装了 sqlite3 gem 吗？我觉得好像找不到适配器。