1 Open RDS database to buy, click the database connection, see the router where vpc
2 Open ECS ECS instance view vpc router, ensuring that both use the same router
3 Add the white list in the RDS group, the ip your ECS server is added to the whitelist
I am here to 0.0.0.0, the default is accessible to any ip RDS (unsafe).
4 Open ECS, ECS remote connection to the server, the input yum install mysql mysql installation service on the server.
5 RDS database connection in ECS server, enter mysql -h RDS internal network address -u RDS user name -p password to enter the database
