vi /etc/my.cnf [mysqld] #添加跳过验证 skip-grant-tables
2.执行：systemctl restart mysqld.service 3.执行：mysql mysql>use mysql; mysql>update user set authentication_string=PASSWORD(‘123456’) where User=‘root’; mysql>flush privileges;
4.systemctl restart mysqld.service 5.mysql -uroot -p123456正常登陆
