1 编辑mysql的配置文件 mysqld.cnf
root@iZwz99xkrnh5xye3zgi4btZ:~# vi /etc/mysql/mysql.conf.d/mysqld.cnf
2 把 bind-address = 127.0.0.1 注释掉
3 重启 root@iZwz99xkrnh5xye3zgi4btZ:~# sudo /etc/init.d/mysql restart
4 进入mysql,输入给root用户设置权限的命令行并回车
mysql> grant all privileges on *.* to root@"%" identified by "123321" with grant option;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;