如何解决错误＆＃39; fe_sendauth：没有提供密码＆＃39;在使用PostgreSQL的Rails中？

时间：2015-07-23 16:47:06

标签： postgresql ruby-on-rails-4 ubuntu-14.04 postgresql-9.3

我尝试使用postgresql数据库创建我的Rails应用程序，但是当我启动rails server时，我收到了此错误：

  

fe_sendauth：未提供密码

这里＆＃39;我的行动一步一步：

$ sudo apt-get install postgresql postgresql-contrib
$ gem install pg
$ rails new timetracker --database=postgresql --skip-unit-test

我的database.yml文件如下所示：

default: &default
  adapter: postgresql
  encoding: unicode
  pool: 5
  host: localhost
  username: postgres
  password:

development:
  <<: *default
  database: timetracker_development

test:
  <<: *default
  database: timetracker_test

production:
  <<: *default
  database: timetracker_production

这是我的pg_hba.conf文件：

# Database administrative login by Unix domain socket
local   all             postgres                                peer

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     peer
# IPv4 local connections:
host    all             all             127.0.0.1/32            md5
# IPv6 local connections:
host    all             all             ::1/128                 md5

# modified by me.
host    all             all             127.0.0.1/32            trust

host    all             all             127.0.0.1/32            trust

host    all             all             ::1/128                 trust

所以，当我rails server时，我收到了错误，然后通过这样做得到了：

$ rails c
$ ActiveRecord::Base.connection.instance_variable_get(:@config)
  

2.1.5：001＆gt;的ActiveRecord :: Base.connection.instance_variable_get（：@配置）   PG :: ConnectionBad：fe_sendauth：没有提供密码

     

这   /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:655:in initialize' from /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:655:in new＆＃39;从   /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:655:in connect' from /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:242:in初始化＆＃39;从   /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:44:in   new' from /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/postgresql_adapter.rb:44:in postgresql_connection＆＃39;从   /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:438:in   new_connection' from /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:448:in checkout_new_connection＆＃39;从   /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:422:in   acquire_connection' from /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:349:in 屏蔽结帐＆＃39;从   /home/denis/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/monitor.rb:211:in   mon_synchronize' from /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:348:in 结帐＆＃39;从   /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:263:in   block in connection' from /home/denis/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/monitor.rb:211:in mon_synchronize＆＃39;从   /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:262:in   connection' from /home/denis/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:571:in retrieve_connection＆＃39; ...... 4级......来自   /home/denis/.rvm/gems/ruby-2.1.5/gems/railties-4.2.3/lib/rails/commands/console.rb:9:in   start' from /home/denis/.rvm/gems/ruby-2.1.5/gems/railties-4.2.3/lib/rails/commands/commands_tasks.rb:68:in 控制台＆＃39;从   /home/denis/.rvm/gems/ruby-2.1.5/gems/railties-4.2.3/lib/rails/commands/commands_tasks.rb:39:in   run_command!' from /home/denis/.rvm/gems/ruby-2.1.5/gems/railties-4.2.3/lib/rails/commands.rb:17:in ＆＃39;从   /home/denis/.rvm/gems/ruby-2.1.5/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:274:in require' from /home/denis/.rvm/gems/ruby-2.1.5/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:274:in阻止在需要＆＃39;从   /home/denis/.rvm/gems/ruby-2.1.5/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:240:in load_dependency' from /home/denis/.rvm/gems/ruby-2.1.5/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:274:in要求＆＃39;来自/ home / denis / WEB / Rails / timetracker / bin / rails：8：<top (required)>' from /home/denis/.rvm/gems/ruby-2.1.5/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:268:in加载＆＃39;从   /home/denis/.rvm/gems/ruby-2.1.5/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:268:in block in load' from /home/denis/.rvm/gems/ruby-2.1.5/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:240:in load_dependency＆＃39;从   /home/denis/.rvm/gems/ruby-2.1.5/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:268:in load' from /home/denis/.rvm/rubies/ruby-2.1.5/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in要求＆＃39;从   /home/denis/.rvm/rubies/ruby-2.1.5/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in require' from -e:1:in＆＃39; 2.1.5： 002＆gt;

我第一次使用postgresql，我想我只是做错了。

你能帮帮我吗？

3 个答案:

答案 0 :(得分：9)

我解决此问题的方法是从host: localhost群组中删除default:。

答案 1 :(得分：5)

PostgreSQL按照指定的顺序匹配pg_hba.conf条目，因此它使用预先指定的host all all 127.0.0.1/32 md5条目进行身份验证，而不是指定的trust条目。

将自定义trust条目移到预先指定的条目之上（并可选择注释掉旧条目），然后通过运行sudo service postgresql reload（在Ubuntu上）或重新启动来重新加载配置。

答案 2 :(得分：0)

我不知道为什么，但是对我来说，这条线不能解决问题

host    mydb       myuser         127.0.0.1/32            trust

这是这样做的：

host    mydb       myuser         localhost               trust
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