我正在寻找部署我的第一个rails应用程序，并且遇到了一些问题。首先，在开发服务器上一切正常，所以我觉得我很高兴。无法将应用程序部署到我的主机后，我尝试首次以生产模式启动服务器，收到多个错误。
出于好奇，我创建了一个新的应用程序，完全新鲜，没有我编辑任何代码。关于我的数据库，我得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>'
有没有人在尝试启动生产服务器时遇到过这种情况？ database.yml，仅用于测量，是sqlite3的以下默认值：
production:
adapter: sqlite3
database: db/production.sqlite3
pool: 5
timeout: 5000
我确认.yml没有标签（不是它应该自动生成）。
无论如何，我很感激帮助。
答案 0 :(得分：0)
你安装了sqlite3 gem吗？听起来像我找不到适配器。