AWS Instance Profiles

The rancher UI contains fields for providing my AWS Access and Secret keys for interacting with AWS. For security reasons, I would prefer to use IAM Instance Profiles to allow my Rancher server (deployed to an EC2 instance) to interact with the AWS API. I’m having trouble finding any sort of documentation, blog posts, github repos, etc. on how to accomplish this. Is this something that is supported?

I also have this limitation of needing to use instance profiles, did you ever solve this?