1. 首頁
  2. 問答
  3. Rails - Postgres - 無法連接到服務器：連接被拒絕（PG :: ConnectionBad）

Rails - Postgres - 無法連接到服務器：連接被拒絕（PG :: ConnectionBad）

2013-11-04 110 views
5

昨天我已經安裝了Postgres和pgAdminIII，所有工作都正常，但重新加載後它停止工作。 rails server後，我已經得到了錯誤信息：Rails - Postgres - 無法連接到服務器：連接被拒絕（PG :: ConnectionBad）

=> Booting Thin 
=> Rails 3.2.13 application starting in development on http://0.0.0.0:3000 
=> Call with -d to detach 
=> Ctrl-C to shutdown server 
Exiting 
/home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:1216:in `initialize': could not connect to server: Connection refused (PG::ConnectionBad) 
     Is the server running on host "localhost" (127.0.0.1) and accepting 
     TCP/IP connections on port 5432? 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:1216:in `new' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:1216:in `connect' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:324:in `initialize' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `new' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `postgresql_connection' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:315:in `new_connection' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:325:in `checkout_new_connection' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:247:in `block (2 levels) in checkout' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `loop' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `block in checkout' 
     from /home/home/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:239:in `checkout' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:102:in `block in connection' 
     from /home/home/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:101:in `connection' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:410:in `retrieve_connection' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_specification.rb:171:in `retrieve_connection' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_specification.rb:145:in `connection' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/railtie.rb:88:in `block in <class:Railtie>' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `instance_exec' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `run' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/initializable.rb:55:in `block in run_initializers' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `each' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `run_initializers' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/application.rb:136:in `initialize!' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in `method_missing' 
     from /home/home/Projects/mostdance/config/environment.rb:5:in `<top (required)>' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `block in require' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require' 
     from /home/home/Projects/mostdance/config.ru:3:in `block in <main>' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize' 
     from /home/home/Projects/mostdance/config.ru:in `new' 
     from /home/home/Projects/mostdance/config.ru:in `<main>' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/builder.rb:40:in `eval' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/builder.rb:40:in `parse_file' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/server.rb:200:in `app' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands/server.rb:46:in `app' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/server.rb:304:in `wrapped_app' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/rack-1.4.5/lib/rack/server.rb:254:in `start' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands/server.rb:70:in `start' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands.rb:55:in `block in <top (required)>' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands.rb:50:in `tap' 
     from /home/home/.rvm/gems/ruby-1.9.3-p448/gems/railties-3.2.13/lib/rails/commands.rb:50:in `<top (required)>' 
     from script/rails:6:in `require' 
     from script/rails:6:in `<main>'

這是我database.yml文件：

development: 
    host: localhost 
    adapter: postgresql 
    encoding: unicode 
    database: mydb 
    pool: 5 
    timeout: 5000 
    username: postgres 
    password: password 
    min_messages: WARNING 

test: 
    host: localhost 
    adapter: sqlite3 
    database: db/test.sqlite3 
    pool: 5 
    timeout: 5000 

production: 
    adapter: postgresql 
    encoding: unicode 
    database: mydb 
    pool: 5 
    timeout: 5000 
    username: postgres 
    password: password 
    host: 127.0.0.1 
    port: 5432 
    min_messages: WARNING

我也嘗試運行服務器的Postgres：

su postgres /etc/init.d/postgresql start 

Password: 
* Starting PostgreSQL 9.1 database server                                      * Use of uninitialized value $info{"pgdata"} in -d at /usr/bin/pg_ctlcluster line 331. 
Use of uninitialized value $info{"pgdata"} in concatenation (.) or string at /usr/bin/pg_ctlcluster line 332. 
Error: is not accessible or does not exist

此外，我不知道爲什麼，但現在rails server把這個錯誤：

=> Booting Thin 
=> Rails 3.2.13 application starting in development on http://0.0.0.0:3000 
=> Call with -d to detach 
=> Ctrl-C to shutdown server 
Exiting 
/home/home/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:1216:in `initialize': FATAL: Peer authentication failed for user "postgres" (PG::ConnectionBad)

請幫幫我！如果你需要更多的信息 - 寫入評論，我會更新我的問題

來源

2013-11-04 dshevc93

+0

如果postgres服務器沒有啓動或重新啓動，這很可能是服務器正在運行..._消息，請參閱postgres服務器日誌以獲取錯誤消息。 –

+2

問題在於PostgreSQL而不是Rails。嘗試啓動數據庫服務器時出現的錯誤消息使得看起來像啓動腳本之一已被編輯或損壞，或者數據庫尚未初始化。也許用數據庫錯誤來解釋一下這個問題？ –

+0

參見https://stackoverflow.com/questions/19828385/pgconnectionbad-could-not-connect-to-server-connection-refused – Kevin

回答

5

當我在過去遇到過這個問題時，我經常會做一些事情來讓它運行，其中大部分看起來很簡單，但我「M強大的健忘 -

有時我還沒有實際創建數據庫切換到Postgres的

bundle exec rake db:create

後，然後讓所有我的表在那裏 -

bundle exec rake db:migrate

其他時間我需要仔細檢查並確保PG寶石已安裝

gem install pg

來源

2014-01-08 02:50:09

0

如果您在Mac上。然後嘗試重新安裝Postgresapp，然後重新啓動一切。確保重新導入數據庫。

如果你在Linux上重新安裝Postgres，然後重新啓動一切。

來源

2014-01-19 09:56:25 Gaurav

相關問題

 相關問題