rake db:migrate无法连接到服务器错误

时间:2013-07-25 01:50:23

标签: ruby-on-rails

嘿我想看一个人的示例应用程序。所以我从github上下载并安装了ruby版本,他们使用的是ruby 2.0.0,但是当我尝试$ rake db:migrate时,我收到了这个错误:

rake db:migrate
rake aborted!
could not connect to server: Connection refused
    Is the server running on host "localhost" (127.0.0.1) and accepting
    TCP/IP connections on port 5432?

/home/alain/.rvm/gems/ruby-2.0.0-preview2/gems/activerecord-4.0.0.rc1/lib/active_record/connection_adapters/postgresql_adapter.rb:796:in `initialize'
/home/alain/.rvm/gems/ruby-2.0.0-preview2/gems/activerecord-4.0.0.rc1/lib/active_record/connection_adapters/postgresql_adapter.rb:796:in `new'
...(etc)

知道我应该做什么吗?

的database.yml

development:
  adapter: postgresql
  host: localhost
  encoding: unicode
  database: rentmybike_dev
  pool: 5
  username: alain
  password: obama

test:
  adapter: postgresql
  encoding: unicode
  database: rentmybike_test
  pool: 5

# Add the below...

production:
  adapter: postgresql
  host: localhost
  encoding: unicode
  database: rentmybike_production
  pool: 5
  username: alain
  password: obama

1 个答案:

答案 0 :(得分:2)

要安装postgres,您可以使用以下命令:

sudo apt-get install postgresql-9.1 postgresql-server-dev-9.1

然后你应该为新用户设置密码

sudo passwd postgres

您必须确保config / database.yml中的数据库配置参数(如用户名,密码等)正确无误。 然后:

rake db:setup

将创建数据库并恢复模式(如果有的话)。