这是我的堆栈信息： 堆栈： 竹子-核磁共振-1.9.2
当我尝试通过以下命令访问 heroku 控制台时：heroku run -a pakrat script/rails console(pakrat是我的应用名称)
我收到以下错误：/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/postgresql_adapter.rb：1032：ininitialize': could not translate host name "ec2-107-22-169-50.compute-1.amazonaws.com" to address: Name or service not known (PGError)
from /app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/postgresql_adapter.rb:1032:innew' 来自/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/postgresql_adapter.rb：1032：INconnect'
from /app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/postgresql_adapter.rb:301:in初始化' 来自/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/postgresql_adapter.rb：28：INnew'
from /app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/postgresql_adapter.rb:28:inpostgresql_connection' 来自/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/abstract/connection_pool.rb：304：INnew_connection'
from /app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:323:incheckout_new_connection' 来自/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/abstract/connection_pool.rb：265：inblock (2 levels) in checkout'
from /app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:261:in循环' 来自/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/abstract/connection_pool.rb：261：INblock in checkout'
from /usr/ruby1.9.2/lib/ruby/1.9.1/monitor.rb:201:inmon_synchronize' 来自/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/abstract/connection_pool.rb：260：incheckout'
from /app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:162:inconnection' 来自/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/abstract/connection_pool.rb：409：INretrieve_connection'
from /app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/abstract/connection_specification.rb:107:inretrieve_connection' 来自/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/connection_adapters/abstract/connection_specification.rb：89：inconnection'
from /app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/base.rb:703:intable_exists？ 来自/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/base.rb：798：INattribute_names'
from /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.1.1/lib/action_controller/metal/params_wrapper.rb:168:in_set_wrapper_defaults' 来自/app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.1.1/lib/action_controller/metal/params_wrapper.rb：128：ininherited'
from /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.1.1/lib/abstract_controller/railties/routes_helpers.rb:7:in块(2 个级别)在 with' from/app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.1.1/lib/action_controller/railties/paths.rb：7：inblock (2 levels) in with'
from /app/app/controllers/authentications_controller.rb:1:in' 来自/app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb：240：inrequire'
from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:inblock in require' from/app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb：225：inload_dependency'
from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:inrequire' 来自/app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb：348：inrequire_or_load'
from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:302:independ_on' 来自/app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb：214：INrequire_dependency'
from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb:417:in块(2 级)在eager_load！ 来自/app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb：416：ineach'
from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb:416:in块在eager_load！ 来自/app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb：414：ineach'
from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb:414:ineager_load！ 来自/app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/application/finisher.rb：51：inblock in <module:Finisher>'
from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:30:ininstance_exec' 来自/app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb：30：inrun'
from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:55:in块在run_initializers' 来自/app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb：54：ineach'
from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:54:inrun_initializers' 来自/app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/application.rb：96：ininitialize!'
from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/railtie/configurable.rb:30:inmethod_missing' from/app/config/environment.rb：5：in<top (required)>'
from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:inrequire' 来自/app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb：240：inblock in require'
from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:223:in块在load_dependency' 来自/app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb：640：innew_constants_in'
from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:223:inload_dependency' 来自/app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb：240：inrequire'
from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/application.rb:83:inrequire_environment！ 来自/app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/command.rb：39：in<top (required)>'
from script/rails:6:inrequire' 从脚本/轨道：6：在 ''
我认为问题与无法连接到postgres有关，所以我使用heroku pg：promote推广了我的数据库，如下所述：
https://devcenter.heroku.com/articles/heroku-postgres-addon
和 Heroku 控制台再次工作