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Role Session Name

You can configure the Role Session Name via shared configuration file:

# ~/.aws/config
[profile frank@concerts]
credential_process = vegas-credentials assume --profile=frank@concerts
vegas_role_arn = arn:aws:iam::222222222222:role/SingerRole
vegas_source_profile = work
role_session_name = SinatraAtTheSands

Fallback value​

AssumeRole requires Role Session Name value to be set. If you do not provide one, Vegas Credentials will use a fallback value which is one of the following (in the following priority):

  1. User Full Name: e.g. Frank Sinatra
  2. User (System) Name: e.g. frank
  3. System Hostname: e.g. franks-laptop
  4. Combination of OS & Architecture: e.g. darwin_amd64

It also removes disallowed characters and truncates the string to match the requirements.