1.连接MySQL

# mysql -uroot -proot

2.登录mysql数据库

MariaDB [(none)]> use mysql;

3.更改远程连接设置

MariaDB [mysql]>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '1234567' WITH GRANT OPTION; 

   例如：指定访问demo数据库

MariaDB [mysql]>GRANT ALL PRIVILEGES ON demo.* TO 'root'@'%' IDENTIFIED BY '1234567' WITH GRANT OPTION; 

4.生效修改的权限

MariaDB [mysql]> flush privileges;

5.查看修改结果

MariaDB [mysql]> select host,user from user;