Postgresql：致命：用户“房间”的密码验证失败

Question

我刚刚在一台新计算机上安装了 rails 和 postgresql（通过遵循 this 教程），我正在尝试运行之前制作并正在工作和生产中的 rails 应用程序。但是，一旦我尝试运行该应用程序，我就会收到此错误：

 /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/postgresql_adapter.rb:1222:in `initialize': FATAL:  password authentication failed for user "rooms" (PG::ConnectionBad)
FATAL:  password authentication failed for user "rooms"
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/postgresql_adapter.rb:1222:in `new'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/postgresql_adapter.rb:1222:in `connect'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/postgresql_adapter.rb:324:in `initialize'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `new'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `postgresql_connection'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_pool.rb:315:in `new_connection'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_pool.rb:325:in `checkout_new_connection'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_pool.rb:247:in `block (2 levels) in checkout'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `loop'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `block in checkout'
    from /home/andrew/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_pool.rb:239:in `checkout'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_pool.rb:102:in `block in connection'
    from /home/andrew/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_pool.rb:101:in `connection'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_pool.rb:410:in `retrieve_connection'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_specification.rb:171:in `retrieve_connection'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/connection_adapters/abstract/connection_specification.rb:145:in `connection'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/model_schema.rb:310:in `clear_cache!'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activerecord-3.2.19/lib/active_record/railtie.rb:103:in `block (2 levels) in <class:Railtie>'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activesupport-3.2.19/lib/active_support/callbacks.rb:418:in `_run__3258742772582479979__prepare__847046652929319931__callbacks'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activesupport-3.2.19/lib/active_support/callbacks.rb:405:in `__run_callback'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activesupport-3.2.19/lib/active_support/callbacks.rb:385:in `_run_prepare_callbacks'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activesupport-3.2.19/lib/active_support/callbacks.rb:81:in `run_callbacks'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/actionpack-3.2.19/lib/action_dispatch/middleware/reloader.rb:74:in `prepare!'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/actionpack-3.2.19/lib/action_dispatch/middleware/reloader.rb:48:in `prepare!'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/application/finisher.rb:47:in `block in <module:Finisher>'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/initializable.rb:30:in `instance_exec'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/initializable.rb:30:in `run'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/initializable.rb:55:in `block in run_initializers'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/initializable.rb:54:in `each'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/initializable.rb:54:in `run_initializers'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/application.rb:136:in `initialize!'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /home/andrew/Documents/mywebroom/config/environment.rb:5:in `<top (required)>'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activesupport-3.2.19/lib/active_support/dependencies.rb:251:in `require'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activesupport-3.2.19/lib/active_support/dependencies.rb:251:in `block in require'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activesupport-3.2.19/lib/active_support/dependencies.rb:236:in `load_dependency'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/activesupport-3.2.19/lib/active_support/dependencies.rb:251:in `require'
    from /home/andrew/Documents/mywebroom/config.ru:3:in `block in <main>'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'
    from /home/andrew/Documents/mywebroom/config.ru:in `new'
    from /home/andrew/Documents/mywebroom/config.ru:in `<main>'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/rack-1.4.5/lib/rack/builder.rb:40:in `eval'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/rack-1.4.5/lib/rack/builder.rb:40:in `parse_file'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/rack-1.4.5/lib/rack/server.rb:200:in `app'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/commands/server.rb:46:in `app'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/rack-1.4.5/lib/rack/server.rb:304:in `wrapped_app'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/rack-1.4.5/lib/rack/server.rb:254:in `start'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/commands/server.rb:70:in `start'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/commands.rb:55:in `block in <top (required)>'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/commands.rb:50:in `tap'
    from /home/andrew/.rvm/gems/ruby-2.1.2/gems/railties-3.2.19/lib/rails/commands.rb:50:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

这是我的database.yml 文件的样子：

development:
    adapter: postgresql
    encoding: unicode
    host: localhost
    database: rooms_development
    pool: 5
    username: rooms
    password: rooms

我还是 Rails 新手，我不知道如何解决这个问题 - 请帮忙！

Answer 1

这是 Postgres 告诉您使用密码登录失败。 The manual advises:

这样的消息表明你联系了服务器，它是 愿意和你说话，但直到你通过授权 pg_hba.conf 文件中指定的方法。检查你的密码 如果投诉，请提供或检查您的 Kerberos 或 ident 软件 提到了其中一种身份验证类型。

那里有更多建议...
或者在这个相关的答案中：

• Run batch file with psql command without password

Answer 2

我在 Ubuntu 机器上遇到了同样的问题，所以我使用以下步骤将其删除。

从控制台切换到 postgres 用户

$ sudo su - postgres

它会要求输入密码，默认密码是postgres

用户切换到postgres后，打开psql控制台

$ psql

如果有多个版本，请检查 postgres 的版本

psql=# select VERSION();

PostgreSQL 9.1.13 on x86_64-unk....         # so version is 9.1

现在打开postgres user

vim /etc/postgresql/9.1/main/pg_hba.conf

9.1是上层命令的版本返回

替换

local   all             postgres                                peer

到

local   all             postgres                                md5

我也在博客上写步骤

http://tarungarg402.blogspot.in/2014/10/set-up-postgresql-on-ubuntu.html