首先在服务器安全组添加3306放行端口
继而再去面板中添加3306放行端口
在阿里云服务器中登录mysql进行远程配置（权限为root才能配置，否则配置不成功）
1. 先用localhost登录
# mysql -u root -p
Enter password:
2. 执行授权命令
mysql> grant all privileges on *.* to root@'%' identified by 'password'; 红色底板的password自行设置
Query OK, 0 rows affected (0.07 sec)
3. 退出再试
mysql> quit
Bye
再试登录：（这里测试用另一台主机（我这里用win10的cmd命令行连接）就能登录，得先连网）
C:\Users\ASDS>mysql -uroot -h 主机ip -p 红色底板的主机ip是要连接的数据库的载体主机ip
Enter password: ********
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 39
Server version: 5.5.61-log Source distribution
Copyright (c) 2000, 2017, 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>
登录成功
第二种授权方式：
先在服务器数据库中创建一个用户和密码：
mysql> create user geek identified by 'password';
Query OK, 0 rows affected (0.00 sec)
执行授权连接单独的一个数据库，我这里连接test数据库：
mysql> grant all privileges on test.* to geek@'%';
Query OK, 0 rows affected (0.00 sec)
登录测试：
C:\Users\ASDS>mysql -ugeek -h 128.10.2.64 -p
Enter password: ********
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 40
Server version: 5.5.61-log Source distribution
Copyright (c) 2000, 2017, 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>
登录成功