无法从Amazon EC2服务器上的远程服务器连接MySQL数据库

1. 我在AWS EC2实例( Server1 )上使用带有centos-7的MySql版本5.7.17
2. 我在"/etc/my.cnf"中添加了条目"bind-address = 0.0.0.0"
3. 在安全组中为0.0.0.0/0的端口3306添加了入站规则
4. 添加了新用户并通过以下查询分配了所有权限
5. 在上授予所有特权.以'password'标识的bob @'％'；
6. 平常特权；
7. 另一个EC2实例( Server2 )在同一VPC上.

1. I am using MySql Version 5.7.17 with centos-7 on AWS EC2 Instance(Server1)
2. I have added entry "bind-address=0.0.0.0" in "/etc/my.cnf"
3. Added inbound rule in security group for port 3306 with 0.0.0.0/0
4. Added new user and assigned all privileges with following queries
5. GRANT ALL PRIVILEGES ON . TO bob@'%' identified by 'password';
6. FLUSH PRIVILEGES;
7. Another EC2 instance(Server2) is on same VPC.

仍然，我无法将MySQL数据库从远程服务器( Server2 )连接到服务器( Server1 ).

Still,I am not able to connect MySQL database from remote server(Server2) to server(Server1).