Using AWS SAML
The aws-saml tool can be used in conjunction with the Shibboleth SAML identity provider to retrieve time-limited API keys suitable for commandline use. It interactively prompts you for your password, and if you have multiple roles available, you are prompted if not otherwise specified on the command line. The resulting credentials are normally stored in your standard AWS credential file, but a command line flag can be provided tohave the credentials output to standard output in Bash format for scripting. These credentials normally expire after one hour; by providing therefresh flag to the tool, it will fork into the background and keep the credentials refreshed as long as your login cookie remains valid.
The tool is currently stored at https://stash.scinet.science/projects/UAAI/repos/aws-saml-cli/browse. From here, the code can be cloned to your local machine, and installed with the command
$ pip install
from the directory containing setup.py
Once installed, basic usage is simple.
$ aws-saml -u your.username
On first usage, you will be prompted for an IDP Entry URL. For SCInet’s Shibboleth server, this is: https://shibboleth.scinet.science/idp/profile/SAML2/Unsolicited/SSO?providerId=urn:amazon:webservices When prompted for your password, enter your SCInet password. If prompted for a role, enter the number corresponding to the role you’d like to use for this session.
Please choose the role you would like to assume: [ 0 ]: arn:aws:iam::123456789012:role/SAML-proj-beta_testers [ 1 ]: arn:aws:iam::123456789012:role/SAML-admin Selection: 1
Full usage documentation
usage: aws-saml [-h] [--username USERNAME] [--prompt-role] [--role ROLE] [--credentials FILE] [--profile PROFILE] [--verbose] [--stdout] [--refresh] [--no-ssl-verify] Retrieve AWS credentials via SAML.optional arguments: -h, --help show this help message and exit --username USERNAME, -u USERNAME Login username --prompt-role, -R Prompt for role selection --role ROLE, -r ROLE Desired role name --credentials FILE, -c FILE Destination file for AWS credentials --profile PROFILE, -p PROFILE AWS credential file profile --verbose, -v --stdout, -s Print credentials in bash format to standard output --refresh Fork into the background, keeping token fresh --no-ssl-verify Disable SSL certificate verification for IDP (allows self-signed certificates - INSECURE)