PG :: ConnectionBad，无法连接到服务器

我遇到了一个rails应用程序问题，我和其他几个人正在研究。我只是克隆了回购，并做要么轨分贝：迁移或试图达成一个页面（服务器运行时）导致此错误：PG :: ConnectionBad，无法连接到服务器

Started GET "/" for 127.0.0.1 at 2017-06-18 11:58:41 +0100 

PG::ConnectionBad (could not connect to server: Cannot assign requested address (0x00002741/10049) 
    Is the server running on host "0.0.0.0" and accepting 
    TCP/IP connections on port 6543? 
): 

pg-0.19.0-x64 (mingw32) lib/pg.rb:45:in 'initialize' 
pg-0.19.0-x64 (mingw32) lib/pg.rb:45:in 'new' 
pg-0.19.0-x64 (mingw32) lib/pg.rb:45:in 'connect' 
activerecord (5.1.1) lib/active_record/connection_adapters/postgresql_adapter.rb:701:in 'connect' 
activerecord (5.1.1) lib/active_record/connection_adapters/postgresql_adapter.rb:220:in 'initialize' 
activerecord (5.1.1) lib/active_record/connection_adapters/postgresql_adapter.rb:38:in 'new' 
activerecord (5.1.1) lib/active_record/connection_adapters/postgresql_adapter.rb:38:in 'postgresql_connection' 
activerecord (5.1.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:759:in 'new_connection' 
activerecord (5.1.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:803:in 'checkout_new_connection' 
activerecord (5.1.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:782:in 'try_to_checkout_new_connection' 
activerecord (5.1.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:743:in 'acquire_connection' 
activerecord (5.1.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:500:in 'checkout' 
activerecord (5.1.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:374:in 'connection' 
activerecord (5.1.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:931:in 'retrieve_connection' 
activerecord (5.1.1) lib/active_record/connection_handling.rb:116:in 'retrieve_connection' 
activerecord (5.1.1) lib/active_record/connection_handling.rb:88:in 'connection' 
activerecord (5.1.1) lib/active_record/migration.rb:562:in 'connection' 
activerecord (5.1.1) lib/active_record/migration.rb:553:in 'call' 
actionpack (5.1.1) lib/action_dispatch/middleware/callbacks.rb:26:in 'block in call' 
activesupport (5.1.1) lib/active_support/callbacks.rb:97:in 'run_callbacks' 
actionpack (5.1.1) lib/action_dispatch/middleware/callbacks.rb:24:in 'call' 
actionpack (5.1.1) lib/action_dispatch/middleware/executor.rb:12:in 'call' 
actionpack (5.1.1) lib/action_dispatch/middleware/debug_exceptions.rb:59:in 'call' 
web-console (3.5.1) lib/web_console/middleware.rb:135:in 'call_app' 
web-console (3.5.1) lib/web_console/middleware.rb:28:in 'block in call' 
web-console (3.5.1) lib/web_console/middleware.rb:18:in 'catch' 
web-console (3.5.1) lib/web_console/middleware.rb:18:in 'call' 
actionpack (5.1.1) lib/action_dispatch/middleware/show_exceptions.rb:31:in 'call' 
railties (5.1.1) lib/rails/rack/logger.rb:36:in 'call_app' 
railties (5.1.1) lib/rails/rack/logger.rb:24:in 'block in call' 
activesupport (5.1.1) lib/active_support/tagged_logging.rb:69:in 'block in tagged' 
activesupport (5.1.1) lib/active_support/tagged_logging.rb:26:in 'tagged' 
activesupport (5.1.1) lib/active_support/tagged_logging.rb:69:in 'tagged' 
railties (5.1.1) lib/rails/rack/logger.rb:24:in 'call' 
sprockets-rails (3.2.0) lib/sprockets/rails/quiet_assets.rb:13:in 'call' 
actionpack (5.1.1) lib/action_dispatch/middleware/remote_ip.rb:79:in 'call' 
actionpack (5.1.1) lib/action_dispatch/middleware/request_id.rb:25:in 'call' 
rack (2.0.3) lib/rack/method_override.rb:22:in 'call' 
rack (2.0.3) lib/rack/runtime.rb:22:in 'call' 
activesupport (5.1.1) lib/active_support/cache/strategy/local_cache_middleware.rb:27:in 'call' 
actionpack (5.1.1) lib/action_dispatch/middleware/executor.rb:12:in 'call' 
actionpack (5.1.1) lib/action_dispatch/middleware/static.rb:125:in 'call' 
rack (2.0.3) lib/rack/sendfile.rb:111:in 'call' 
railties (5.1.1) lib/rails/engine.rb:522:in 'call' 
puma (3.9.1) lib/puma/configuration.rb:224:in 'call' 
puma (3.9.1) lib/puma/server.rb:602:in 'handle_request' 
puma (3.9.1) lib/puma/server.rb:435:in 'process_client' 
puma (3.9.1) lib/puma/server.rb:299:in 'block in run' 
puma (3.9.1) lib/puma/thread_pool.rb:120:in 'call' 
puma (3.9.1) lib/puma/thread_pool.rb:120:in 'block in spawn_thread'

我读过类似的问题，这都表示重新启动postgres，但在Windows上它有点混乱，所以我重新启动我的笔记本电脑，这并没有解决任何问题。我也试图重新克隆回购。请注意，其他rails项目也会工作，这让我想到这与database.yml有关，但我不知道该从哪里做些什么。干杯

来源

2017-06-18 Dominus

我在Windows上，只需启动PGadmin并检查在迁移数据库后是否可以看到数据库。（顺便说一句，你是否在你的电脑上安装了Postgres？） – Maxence

是PG在你的电脑上运行？ :-) –

确保你的PostgreSQL服务正在运行，然后请确保您有需要创建为您的应用程序数据库，你可以做rake db:create

也看到你的database.yml。默认的配置是这样的

development: 
<<: *default 
database: yourappname_development

那里，你还可以添加做出那样连接到你的Postgres所需要的信息，

port: 
username: 
password: 
hostname:

您可以从另一运行轨道采取例如应用程式

来源

2017-06-18 12:30:52 icemelt

谢谢！解决了它:) – Dominus

PG :: ConnectionBad，无法连接到服务器

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