?1、先到mysql官网上下载dmg格式安装包，进行安装。
?2、安装完后，命别名：
alias mysql=/usr/local/mysql/bin/mysql
aliasmysqladmin=/usr/local/mysql/bin/mysqladmin
给root创建密码：
/usr/local/mysql/bin/mysqladmin -u root password root
使用终端来打开或关闭mysql:
sudo /Library/StartupItems/MySQLCOM/MYSQLCOM [start | stop | restart]
进入数据库：
mysql -u root -p
随后输入密码:root
连接mysql时，报异常：Host is not allowed to connect to this MySQL server
授下权：GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;就可以了
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