耙中止，無法連接做的PostgreSQL：連接被拒絕

Question

我想更多PostgreSQL我的品牌新的Rails項目執行rake命令，但我收到此錯誤：

rake aborted! could not connect to server: Connection refused Is the server running on host "localhost" (127.0.0.1) and accepting TCP/IP connections on port 5432?

Tasks: TOP => db:migrate (See full trace by running task with --trace)

real 0m3.245s user 0m1.668s sys 0m0.382s

這是我的第一個Rails應用程序曾經，我WHE運行rails server這是輸出：

=> Booting WEBrick

=> Rails 3.2.3 application starting in development on http://0.0.0.0:3000

=> Call with -d to detach

=> Ctrl-C to shutdown server [2012-06-19 01:17:30] INFO WEBrick 1.3.1 [2012-06-19 01:17:30] INFO ruby 1.9.3 (2012-04-20)

[x86_64-darwin11.3.0] [2012-06-19 01:17:30] INFO

WEBrick::HTTPServer#start: pid=4668 port=3000

的Rails -v：Rails 3.2.3

寶石ENV：

RubyGems Environment: - RUBYGEMS VERSION: 1.8.24 - RUBY VERSION: 1.9.3 (2012-04-20 patchlevel 194) [x86_64-darwin11.3.0] - INSTALLATION DIRECTORY: /Users/kinhow/.rvm/gems/ruby-1.9.3-p194 - RUBY EXECUTABLE: /Users/kinhow/.rvm/rubies/ruby-1.9.3-p194/bin/ruby - EXECUTABLE DIRECTORY: /Users/kinhow/.rvm/gems/ruby-1.9.3-p194/bin - RUBYGEMS PLATFORMS: - ruby - x86_64-darwin-11 - GEM PATHS: - /Users/kinhow/.rvm/gems/ruby-1.9.3-p194 - /Users/kinhow/.rvm/gems/ruby-1.9.3-p194@global - GEM CONFIGURATION: - :update_sources => true - :verbose => true - :benchmark => false - :backtrace => false - :bulk_threshold => 1000 - REMOTE SOURCES: - http://rubygems.org/

，如果有幫助：

運行psql

psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

Answer 1

首先，你需要確保運行PostgreSQL。打開控制檯並執行「ps auxw | grep post」並確保服務器正在運行。你至少應該有四個進程運行，包括「postgres：writer進程」。如果你不這樣做，那麼你還沒有開始。即使您已經啓動它，您也必須將其配置爲偵聽適當的端口（127.0.0.1和「localhost」）。你編輯過postgres.conf文件和pg_hba.conf文件嗎？如果你這樣做，你是否重新啓動服務器？你使用最新的PG寶石？你如何啓動你的服務器？

〜Charles〜