1. 安装mysql
2. 安装libmysql
sudo apt-get install libmysql++-dev
3. 安装mysql适配器
gem install mysql2 --version=0.2.11
* warning: 与ruby on rails 整合的话, mysql2的版本要低于0.3
4. 编辑database.yml
development:
adapter: mysql2
encoding: utf8
pool: 5
database: test
username: [username]
password: [password]
socket: /tmp/mysql.sock
5. 编辑Gemfile
添加 gem 'mysql2'
6. sudo rake db:migrate