Question

我是Ruby on rails的新手。我已经按教程learning by examples

创建了两个基本的演示应用程序

然后它突然停止为我的新示例应用程序工作。

我已经生成了一个控制器Pages和两个动作home和contact，并没有任何想象力。

现在，除localhost:3000的默认index.html rails页面外，我无法打开任何页面。 localhost:3000/pages/home和localhost:3000/pages/contact处的页面会返回此错误。

PG ::错误

服务器意外关闭连接这可能意味着   服务器在处理请求之前或处理时异常终止。

有时（通常在我重启postgresql时），

PG ::错误

服务器意外关闭连接这可能意味着   服务器在处理请求之前或处理时异常终止。           无法发送启动数据包：管道损坏

这是我的堆栈跟踪

activerecord（3.2.8） LIB / active_record / connection_adapters / postgresql_adapter.rb：1213：在 initialize' activerecord (3.2.8) lib/active_record/connection_adapters/postgresql_adapter.rb:1213:in新'activerecord（3.2.8） LIB / active_record / connection_adapters / postgresql_adapter.rb：1213：在 connect' activerecord (3.2.8) lib/active_record/connection_adapters/postgresql_adapter.rb:329:in初始化'activerecord（3.2.8） LIB / active_record / connection_adapters / postgresql_adapter.rb：28：在 new' activerecord (3.2.8) lib/active_record/connection_adapters/postgresql_adapter.rb:28:in postgresql_connection'activerecord（3.2.8） LIB / active_record / connection_adapters /抽象/ connection_pool.rb：309：在 new_connection' activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_pool.rb:319:in checkout_new_connection'activerecord（3.2.8） LIB / active_record / connection_adapters /抽象/ connection_pool.rb：241：在 block (2 levels) in checkout' activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_pool.rb:236:in循环'activerecord（3.2.8） LIB / active_record / connection_adapters /抽象/ connection_pool.rb：236：在 block in checkout' /home/jashwant/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/monitor.rb:211:in mon_synchronize'activerecord（3.2.8） LIB / active_record / connection_adapters /抽象/ connection_pool.rb：233：在 checkout' activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_pool.rb:96:in阻止连接' /home/jashwant/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/monitor.rb:211:in mon_synchronize' activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_pool.rb:95:in连接'activerecord（3.2.8） LIB / active_record / connection_adapters /抽象/ connection_pool.rb：404：在 retrieve_connection' activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_specification.rb:170:in retrieve_connection'activerecord（3.2.8） LIB / active_record / connection_adapters /抽象/ connection_specification.rb：144：在 connection' activerecord (3.2.8) lib/active_record/query_cache.rb:67:in救援电话'activerecord （3.2.8）lib / active_record / query_cache.rb:61:in call' activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in call'actionpack（3.2.8） lib / action_dispatch / middleware / callbacks.rb:28:in block in call' activesupport (3.2.8) lib/active_support/callbacks.rb:405:in 运行 _3261957284442330683_ 致电 _599627944998934036__callbacks' activesupport（3.2.8）lib / active_support / callbacks.rb：405：in __run_callback' activesupport (3.2.8) lib/active_support/callbacks.rb:385:in _ run_call_callbacks' activesupport（3.2.8）lib / active_support / callbacks.rb:81:in run_callbacks' actionpack (3.2.8) lib/action_dispatch/middleware/callbacks.rb:27:in调用'actionpack （3.2.8）lib / action_dispatch / middleware / reloader.rb:65:in call' actionpack (3.2.8) lib/action_dispatch/middleware/remote_ip.rb:31:in call'actionpack（3.2.8） lib / action_dispatch / middleware / debug_exceptions.rb:16:in call' actionpack (3.2.8) lib/action_dispatch/middleware/show_exceptions.rb:56:in call' railties（3.2.8）lib / rails / rack / logger.rb:26:in call_app' railties (3.2.8) lib/rails/rack/logger.rb:16:in call'actionpack（3.2.8） lib / action_dispatch / middleware / request_id.rb:22:in call' rack (1.4.1) lib/rack/methodoverride.rb:21:in call'rack（1.4.1） lib / rack / runtime.rb:17:in call' activesupport (3.2.8) lib/active_support/cache/strategy/local_cache.rb:72:in call'rack （1.4.1）lib / rack / lock.rb:15:in call' actionpack (3.2.8) lib/action_dispatch/middleware/static.rb:62:in call'railties（3.2.8） lib / rails / engine.rb：479：在call' railties (3.2.8) lib/rails/application.rb:223:in调用'机架（1.4.1） lib / rack / content_length.rb:14:in call' railties (3.2.8) lib/rails/rack/log_tailer.rb:17:in call'rack（1.4.1） lib / rack / handler / webrick.rb:59:in service' /home/jashwant/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:138:in service' /home/jashwant/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:94:in {_ 1}}阻止在start_thread'
中

我现在不使用数据库。我尝试run' /home/jashwant/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/server.rb:191:in，但它返回相同的错误。

我在Ubuntu 12.04上（因为google上的一些错误与ubuntu有关）

我在SO上发现了类似的问题，但他们正在经历一些提前阶段，因此需要一些先进的解决方案。

Answer 1

虽然，我没有使用数据库，但在database.yml中指定配置中的端口解决了问题。默认情况下，rails new <app_name> --database=postgresql命令不会在其中放置port。

这是我的配置。

development:
  adapter: postgresql
  encoding: unicode
  database: sample_app_development
  pool: 5  
  port: 5433
  username: myusername
  password: mypassword
  reconnect: true

PG ::错误服务器意外关闭了连接

1 个答案: