Ruby on rails 如何将postgres与ruby on远程计算机连接

我和CentOS在一台IP远程机器上，我的postgres在不同的IP上。 我想用我的rails服务器访问postgres。我编辑了database.yml文件，安装了gem pg，并在database.yml文件中包含了主机IP。。但是我无法运行rakedb:migrate和rails服务器。。下面显示PG错误。请帮助我解决此问题。我试图连接到服务器从过去的4天…但我不能。。。 当我运行db:migrate时，它会显示以下错误

[root@vdimc04 My_Postgres]# rake db:migrate --trace
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Invoke db:load_config (first_time)
** Execute db:load_config
** Execute db:migrate
rake aborted!
fe_sendauth: no password supplied
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:1208:in `initialize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:1208:in `new'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:1208:in `connect'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:326:in `initialize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `new'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/postgresql_adapter.rb:28:in `postgresql_connection'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:315:in `new_connection'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:325:in `checkout_new_connection'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:247:in `block (2 levels) in checkout'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `loop'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `block in checkout'
/usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:239:in `checkout'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:102:in `block in connection'
/usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:101:in `connection'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_pool.rb:410:in `retrieve_connection'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_specification.rb:171:in `retrieve_connection'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/connection_adapters/abstract/connection_specification.rb:145:in `connection'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/migration.rb:662:in `initialize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/migration.rb:570:in `new'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/migration.rb:570:in `up'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/migration.rb:551:in `migrate'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/railties/databases.rake:179:in `block (2 levels) in <top (required)>'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:227:in `call'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:227:in `block in execute'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:222:in `each'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:222:in `execute'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:166:in `block in invoke_with_call_chain'
/usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:159:in `invoke_with_call_chain'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:152:in `invoke'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:141:in `invoke_task'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:99:in `block (2 levels) in top_level'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:99:in `each'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:99:in `block in top_level'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:108:in `run_with_threads'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:93:in `top_level'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:71:in `block in run'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:158:in `standard_exception_handling'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:68:in `run'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/bin/rake:37:in `<top (required)>'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/bin/rake:19:in `load'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/bin/rake:19:in `<main>'
/usr/local/rvm/gems/ruby-1.9.3-p327/bin/ruby_noexec_wrapper:14:in `eval'
/usr/local/rvm/gems/ruby-1.9.3-p327/bin/ruby_noexec_wrapper:14:in `<main>'
Tasks: TOP => db:migrate

   **my database.yml file**
development:
  adapter: postgresql
  encoding: unicode
  database: db_pchamara
  pool: 5
  username: db_test_user
  password: password
  host: 192.168.1.101
test:
  adapter: postgresql
  encoding: unicode
  database: db_pchamara_test
  pool: 5
  username: db_test_user
password: password


production:
  adapter: postgresql
  encoding: unicode
  database: db_pchamara_production
  pool: 5
  username: db_test_user
password: password

[root@vdimc04My_Postgres]#rake db:迁移--跟踪
**调用数据库：迁移（第一次）
**调用环境（第一次）
**执行环境
**调用数据库：加载配置（第一次）
**执行db:load\u config
**执行数据库：迁移
雷克流产了！
fe_sendauth:未提供密码
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/postgresql\u adapter.rb:1208:in'initialize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/postgresql\u adapter.rb:1208:in'new'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/postgresql\u adapter.rb:1208:in'connect'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/postgresql\u adapter.rb:326:in'initialize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/postgresql\u adapter.rb:28:in'new'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/postgresql\u adapter.rb:28:in`postgresql\u connection'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/abstract/connection\u pool.rb:315:in'new\u connection'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/abstract/connection\u pool.rb:325:在“签出新连接”中
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/abstract/connection\u pool.rb:247:在“签出中的块（2级）”中
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/abstract/connection\u pool.rb:242:in'loop'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/abstract/connection\u pool.rb:242:“签出中的块”中
/usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in'mon_synchronize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/abstract/connection\u pool.rb:239:in'checkout'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/abstract/connection\u pool.rb:102:在“连接中的块”中
/usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in'mon_synchronize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/abstract/connection\u pool.rb:101:在“connection”中
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/abstract/connection\u pool.rb:410:in“retrieve\u connection”
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/abstract/connection\u规范。rb:171:in“retrieve\u connection”
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active\u record/connection\u adapters/abstract/connection\u specification.rb:145:在“connection”中
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/migration.rb:662:in'initialize'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/migration.rb:570:in'new'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/migration.rb:570:in'up'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/migration.rb:551:in“migrate”
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.9/lib/active_record/railties/databases.rake:179:in `块（2层）in'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:227:in'call'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:227:in'block in execute'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:222:in'each'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:222:in'execute'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:166:in'block in invoke_with_call_chain'
/usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in'mon_synchronize'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:159:in'invoke_with_call_chain'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:152:in'invoke'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:141:in'invoke_task'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:99:in'block（2层）in top_level'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:99:in'each'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:99:in“顶层块”
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:108:in'run_with_threads'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:93:“顶级”
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:71:in'block in run'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:158:在“标准异常处理”中
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:68:in'run'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/bin/rake:37:in`'
/usr/local/rvm/gems/ruby-1.9.3-p327@global/料仓/耙：19：在“装载”中
/usr/local/rvm/gems/ruby-1.9.3-p327@global/
development:
  adapter: postgresql
  encoding: unicode
  database: blog_development
  pool: 5
  username: blog
  password: very_Secure12/
  host: 224.13.156.78
  port: 5432

fe_sendauth: no password supplied

# TYPE  DATABASE    USER        CIDR-ADDRESS          METHOD

# "local" is for Unix domain socket connections only
local   all         all                               trust
# IPv4 local connections:
host    all         all         127.0.0.1/32          trust
# IPv6 local connections:
host    all         all         ::1/128               trust
# Remote connections
host    your_db     your_user   (Client IP ADDR)      md5