1、mysql>use mysql;
2、mysql>update user set host = '%' where user ='root';
3、mysql>select host, user from user;
4、mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION //赋予任何主机访问数据的权限
5、mysql>FLUSH PRIVILEGES //修改生效
6、mysql>EXIT //退出MySQL

　重启mysql

#systemctl stop mariadb

#systemctl start mariadb

 

如果还是不行的话，则继续

1、mysql> USE mysql;

2、mysql> UPDATE user SET plugin='' WHERE User='root';

3、mysql> FLUSH PRIVILEGES;

4、mysql> exit;

 

　　重启mysql生效。