1,在/etc/my.cnf增加一行 skip-grant-tables 保存退出 2,service mysqld restart 3,mysql -uroot -p 直接回车进入mysql

4,登录后输入 use mysql; select host, user, authentication_string, plugin from user; update user set authentication_string='' where user='root'; quit; 5,vi /etc/my.cnf 注释掉或删除skip-grant-tables 保存退出

6,service msqld restart, 7,mysql -u root -p 直接回车进入mysql

8,登陆后设置新的密码

9, ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';