Rails应用程序无法连接到mysql,无法通过socket’/var/run/mysqld

# MySQL.  Versions 4.1 and 5.0 are recommended.
#
# Install the MYSQL driver
#   gem install mysql2
#
# Ensure the MySQL gem is defined in your Gemfile
#   gem 'mysql2'
#
# And be sure to use new-style password hashing:
#   http://dev.mysql.com/doc/refman/5.0/en/old-client.html
development:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: little_oven_devel
  pool: 5
  username: devel
  password: Development1
  socket: /var/run/mysqld/mysql.sock

# 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: mysql2
  encoding: utf8
  reconnect: false
  database: little_oven_test
  pool: 5
  username: root
  password:
  socket: /tmp/mysql.sock

production:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: little_oven_production
  pool: 5
  username: production
  password: Production1
  socket: /var/run/mysqld/mysql.sock

请注意,我已经更改了套接字变量的位置,以便与我认为是ubuntu上的.sock文件相对应,因为这与mac OSX上的标准安装不同.

最后,我在运行时也遇到了同样的错误

rails c

具有以下输出：

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