Ubuntu安装mysql5.7报错ERROR 1698

报错信息：

ERROR 1698 (28000): Access denied for user 'root'@'localhost'

解决方法：

sudo mysql -u root -p

select user, plugin from mysql.user;

update mysql.user set authentication_string=PASSWORD('newPwd'), plugin='mysql_native_password' where user='root';

flush privileges;

exit

重启进入