一、登陆MySql
# 登陆mysql
mysql -u root -p mysql
#如果是通过docker
docker exec -it mymysql mysql -u root -p mysql
二、更换新密码
# set password for root@localhost = password('xxx');
# mysqladmin -uroot -pxxx password 123456
-- 选择数据库
-- use mysql;
-- 更新密码
alter user 'root'@'localhost' identified with mysql_native_password by 'newPassword';
-- 刷新权限
flush privileges;