如何将弹性benstalk上部署的Web应用程序与AWS上的mysql数据库实例连接？

Question

I have a web application deployed on elastic beanstalk. I have configured MySQL database for it. In database instance in security group i have done following changes: Type(MYSQL/Aurora), protocol(TCP), port range(3306) and source(0.0.0.0/0). when i am trying to insert data into database using web application or fetch data from database using web application which is deployed on elastic beanstalk, i am not able to do it. I have made changes in servlet code as mentioned on aws website but connection is not establishing between web application and RDS on aws. I don't know where i am doing the mistake. please help me to achieve it.

Answer 1

Please follow the below steps to connect the mysql instance from web application:

• Copy the Endpoint from the RDS instance which will be the hostname for your mysql database.
• SSH into the EC2-Instance

• Use mysql to connect to the RDS instance using the following command:

  mysql -u username -p -h HOSTNAME

where HOSTNAME is the endpoint of your RDS instance.

Also, you have mentioned you have inbound all the traffic in the VPC security groups. This is not the recommended way to connect to a database.Database should always be secured from the outside world. You have to explicitly mention the source from where the connections will be coming.
Eg:
Type Protocol Port Range Source
MySQL/Aurora TCP 3306 security group id of the application