(AWS) Cannot start RDS on your selected VPC

Question

I follow the AWS instructions Scenario 2: VPC with public and private subnets , and I have problems at the moment when I try to start the database server.

When I start my instance, everything is fine, and I can assign it to the newly created VPC. However, when it comes to starting RDS, the only VPC available (in step 4, setting advanced options) is the default VPC (that is, not the one I created in accordance with their instructions).

Does anyone have any ideas on this or really on how to resolve it?

Answer 1

RDS requires a bit more configuration than an EC2 instance if you want to run it in VPC.

In particular, you need to create:

• DB subnet group inside VPC
• VPC security group for RDS instance

The documentation is a bit like AWS RDS documents. It can be found here:

Creating a DB instance in VPC