MySQL: 忘记root用户密码

1. 杀掉正在运行的mysql

killall -TERM mysqld

2. 启动mysql

PATH_TO_MYSQL/bin/mysqld --skip-grant-tables &

3. 修改密码

mysql> use mysql
mysql> update user set password=password("new_pass") where user="root";
mysql> flush privileges;

4. ok.