How to use AWS cloudshell when assuming role?

Hi!

For logging into CloudShell, see https://docs.aws.amazon.com/cloudshell/latest/userguide/sec-auth-identities.html for how to configure auth identities.

If you're already in CloudShell and trying to assume a different role, CloudShell has the AWS CLI installed so you can use that. See here for more information: https://awscli.amazonaws.com/v2/documentation/api/latest/index.html

aws sts assume-role --role-arn arn:aws:iam::123456789012:role/samplerole ----external-id <insert_id_here>

Keep in mind, for Assuming a Role, both the IAM Role you're trying to assume and the IAM entity you're using while using CloudShell must be configured properly (Trust Policy, permissions, etc).