I'm trying to find out what resources (EC2, RDS, LB, EFS etc.) are associated with a particular security group.
I can filter describe_ec2_instances() with group-name or group-id, but can't see that functionality with describe_rds_instances() or same for LB, EFS. I tried using describe_network_interfaces() filtered by group, and whilst I can see that a particular interface is used by RDS, EFS or whatever, I can't see an instanceId to relate back to the actual resource.