Your question is Troubleshoot VPC, RDS, ASG with JDBC Timeouts. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You have two VPCs: one with a private subnet hosting an RDS database, and another with multiple subnets and an Auto Scaling Group of EC2 instances. If a percentage of instances fail to spin up due to a JDBC timeout, how do you troubleshoot and resolve this?