在目录/etc/MysqL下找到my.cnf，用vim编辑，找到my.cnf里面的

#bind-address = 127.0.0.1

将其只能本地ip访问的代码进行注释

然后用root登陆MysqL数据库

im@58user:~$ MysqL -u root -p
Enter password: 
Welcome to the MysqL monitor.  Commands end with ; or \g.
Your MysqL connection id is 6
Server version: 5.5.53-0ubuntu0.14.04.1 (Ubuntu)

Copyright (c) 2000,2016,Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MysqL>

然后在执行

MysqL> grant all on *.* to root@'%' identified by '123';
myslq> flush privileges;

最后就可以在远程用刚才创建的用户和密码登陆MysqL。

在执行对用户授权密码的时候可能会遇到下面的错误：

ERROR 1290 (HY000): The MysqL server is running with the --skip-grant-tables option so it cannot execute this statement

解决方法：

先刷新一下权限表。 MysqL> flush privileges; Query OK,0 rows affected (0.01 sec) MysqL> grant all on cactidb.* to dbuser@’localhost’ identified by ‘123’; Query OK,0 rows affected (0.00 sec)