Log in to AWS using OpenID Connect

The aim for this is to create a general purpose CLI OIDC login with a limited set of trusted dependencies.

Tested with Azure AD for now. Your mileage may vary with other providers, please let us know!

Prerequisites (Azure AD example)

• Create Azure AD App
  • Set public client reply url to http://localhost
  • Add an appRole (may be unnecessary)
  • Add users(s) to the role (to the app)
• Create an AWS OIDC identity provider
  • Authority URL will be https://login.microsoftonline.com/<AAD tenant id>/oauth2/v2.0
  • Add your AAD app client id as audience
• Create a web identity role with permissions you'd like
  • Edit trust relationship for the role to allow role assumption with tokens issued by AAD for your app
• Add parameters under a suitable profile ~/.aws/config:
  • Add your application id (client id) from AAD app
  • Add your AAD tenant id
  • oidc_authority_url=https://login.microsoftonline.com/<AAD tenant id>/oauth2/v2.0
  • oidc_client_id=<id of your AAD app>
  • oidc_role_arn=<ARN of the role you are assuming on AWS>

Installation

It's available on PyPI. Install by running pip install aws-oidc-login.

Run

The executable is called aol. Log in with default profile by simply running aol or specify a profile with aol [profile].

See aol -h for more options.