How to assume role into another AWS account with k8up?

[devinnasar]

Hello,

The AWS account containing the s3 buckets I wish to use for k8up backups can only be accessed by IAM users in another AWS account assuming a role into it. The configuration for backup to s3 in k8up seems to be IAM Access/Secret key based. I can totally provision keys for the security account for k8up, but I'm stuck on instructing it to assume into the backup account. Is there documentation for instructing k8up to assume a role like this? Thanks!

[devinnasar]

I found an example of the kind of functionality I'm looking for in a similar application: Kasten K10. That product has a configuration variable that allows the assumption of an IAM role in conjunction with IAM access/secret keys. This looks like the functionality I'm trying to get: https://docs.kasten.io/latest/install/aws/using_aws_iam_roles.html