1.停止mysql服务
sudo service mysql stop
2.安全模式启动
sudo mysqld_safe --skip-grant-tables &
3.重新登录，不输入密码，直接回车
mysql -uroot -p
4.重置密码为root
use mysql;
update user set password=password('root') where user='root';
-- 如果执行报错ERROR 1054(42S22) Unknown column 'password' in ‘field list’则是当前mysql版本没有password字段，password改为authentication_string
update user set authentication_string=password('root') where user='root';
flush privileges;
5.重启mysql服务
sudo service mysql start
转载于:https://www.cnblogs.com/xLI4n/p/10437403.html
