Problems with rails server
我刚开始学习Ruby on Rails和Heroku。我正在Herokus网站上跟踪入门指南,但遇到了一个问题。我登录了Heroku,创建了一个类似于
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | PG::ConnectionBad (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"? ): activerecord (4.0.2) lib/active_record/connection_adapters/postgresql_adapter.rb:831:in `initialize' activerecord (4.0.2) lib/active_record/connection_adapters/postgresql_adapter.rb:831:in `new' activerecord (4.0.2) lib/active_record/connection_adapters/postgresql_adapter.rb:831:in `connect' activerecord (4.0.2) lib/active_record/connection_adapters/postgresql_adapter.rb:548:in `initialize' activerecord (4.0.2) lib/active_record/connection_adapters/postgresql_adapter.rb:41:in `new' activerecord (4.0.2) lib/active_record/connection_adapters/postgresql_adapter.rb:41:in `postgresql_connection' activerecord (4.0.2) lib/active_record/connection_adapters/abstract/connection_pool.rb:440:in `new_connection' activerecord (4.0.2) lib/active_record/connection_adapters/abstract/connection_pool.rb:450:in `checkout_new_connection' activerecord (4.0.2) lib/active_record/connection_adapters/abstract/connection_pool.rb:421:in `acquire_connection' activerecord (4.0.2) lib/active_record/connection_adapters/abstract/connection_pool.rb:356:in `block in checkout' /Users/mattmoss/.rbenv/versions/2.1.0/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize' activerecord (4.0.2) lib/active_record/connection_adapters/abstract/connection_pool.rb:355:in `checkout' activerecord (4.0.2) lib/active_record/connection_adapters/abstract/connection_pool.rb:265:in `block in connection' /Users/mattmoss/.rbenv/versions/2.1.0/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize' activerecord (4.0.2) lib/active_record/connection_adapters/abstract/connection_pool.rb:264:in `connection' activerecord (4.0.2) lib/active_record/connection_adapters/abstract/connection_pool.rb:546:in `retrieve_connection' activerecord (4.0.2) lib/active_record/connection_handling.rb:79:in `retrieve_connection' activerecord (4.0.2) lib/active_record/connection_handling.rb:53:in `connection' activerecord (4.0.2) lib/active_record/query_cache.rb:51:in `restore_query_cache_settings' activerecord (4.0.2) lib/active_record/query_cache.rb:43:in `rescue in call' activerecord (4.0.2) lib/active_record/query_cache.rb:32:in `call' activerecord (4.0.2) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call' activerecord (4.0.2) lib/active_record/migration.rb:369:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call' activesupport (4.0.2) lib/active_support/callbacks.rb:373:in `_run__4242016335734095215__call__callbacks' activesupport (4.0.2) lib/active_support/callbacks.rb:80:in `run_callbacks' actionpack (4.0.2) lib/action_dispatch/middleware/callbacks.rb:27:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/reloader.rb:64:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/remote_ip.rb:76:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call' railties (4.0.2) lib/rails/rack/logger.rb:38:in `call_app' railties (4.0.2) lib/rails/rack/logger.rb:20:in `block in call' activesupport (4.0.2) lib/active_support/tagged_logging.rb:67:in `block in tagged' activesupport (4.0.2) lib/active_support/tagged_logging.rb:25:in `tagged' activesupport (4.0.2) lib/active_support/tagged_logging.rb:67:in `tagged' railties (4.0.2) lib/rails/rack/logger.rb:20:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/request_id.rb:21:in `call' rack (1.5.2) lib/rack/methodoverride.rb:21:in `call' rack (1.5.2) lib/rack/runtime.rb:17:in `call' activesupport (4.0.2) lib/active_support/cache/strategy/local_cache.rb:83:in `call' rack (1.5.2) lib/rack/lock.rb:17:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/static.rb:64:in `call' rack (1.5.2) lib/rack/sendfile.rb:112:in `call' railties (4.0.2) lib/rails/engine.rb:511:in `call' railties (4.0.2) lib/rails/application.rb:97:in `call' rack (1.5.2) lib/rack/lock.rb:17:in `call' rack (1.5.2) lib/rack/content_length.rb:14:in `call' rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service' /Users/mattmoss/.rbenv/versions/2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service' /Users/mattmoss/.rbenv/versions/2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run' /Users/mattmoss/.rbenv/versions/2.1.0/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread' Rendered /Users/mattmoss/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.0.2/lib/action_dispatch/middleware/templates/rescues/_source.erb (0.5ms) Rendered /Users/mattmoss/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.0.2/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.0ms) Rendered /Users/mattmoss/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.0.2/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (1.0ms) Rendered /Users/mattmoss/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.0.2/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (18.2ms) |
这是我的数据库.yml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | # PostgreSQL. Versions 8.2 and up are supported. # # Install the pg driver: # gem install pg # On OS X with Homebrew: # gem install pg -- --with-pg-config=/usr/local/bin/pg_config # On OS X with MacPorts: # gem install pg -- --with-pg-config=/opt/local/lib/postgresql84/bin/pg_config # On Windows: # gem install pg # Choose the win32 build. # Install PostgreSQL and put its /bin directory on your path. # # Configure Using Gemfile # gem 'pg' # development: adapter: postgresql encoding: unicode database: myapp_development pool: 5 password: # Connect on a TCP socket. Omitted by default since the client uses a # domain socket that doesn't need configuration. Windows does not have # domain sockets, so uncomment these lines. #host: localhost # The TCP port the server listens on. Defaults to 5432. # If your server runs on a different port number, change accordingly. #port: 5432 # Schema search path. The server defaults to $user,public #schema_search_path: myapp,sharedapp,public # Minimum log levels, in increasing order: # debug5, debug4, debug3, debug2, debug1, # log, notice, warning, error, fatal, and panic # Defaults to warning. #min_messages: notice # Warning: The database defined as"test" will be erased and # re-generated from your development database when you run"rake". # Do not set this db to the same as development or production. test: adapter: postgresql encoding: unicode database: myapp_test pool: 5 password: production: adapter: postgresql encoding: unicode database: myapp_production pool: 5 password: development: host: localhost test: host: localhost |
在大多数*nix服务器上,"localhost"是通过一个unix风格的套接字处理的。如果使用127.0.0.1,它将使用TCP/IP。尝试一下,或者确保您的客户机和服务器使用相同的套接字地址,并且它实际上是一个可用的*nix套接字。
database.yml中有一个配置参数,允许您设置套接字地址,确保您也可以访问该目录。
在您的
1 | host: localhost |
在您的每个开发和测试环境中,或者更具体地看一下您现有的
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | development: adapter: postgresql encoding: unicode database: myapp_development pool: 5 password: host: localhost test: adapter: postgresql encoding: unicode database: myapp_test pool: 5 password: host: localhost |
希望这有帮助
我听说Heroku对DB连接行为做了一些改变。对于Rails版本>=4.1,它不会覆盖config/database.yml-它会与之合并。首先,您需要访问https://postgres.heroku.com/databases并单击您的数据库。您应该在下面的图片中查看该参数
将该变量用于生产参数,如so
1 2 3 | production: adapter: postgresql url: <%= ENV['HEROKU_POSTGRESQL_BLACK_URL'] %> |
这就是我在尝试了不同的东西后所起的作用。我希望这能帮助别人。