aws-assume-role

Create temporary credentials in your MFA-enabled IAM account.

Installation

If you are using a Mac, you can use brew.

$ brew tap naomichi-y/aws-assume-role
$ brew install naomichi-y/aws-assume-role/aws-assume-role

If the Go command is available.

$ go install github.com/naomichi-y/aws-assume-role@latest

Define MFA enabled accounts in the profile.

~/.aws/credentials

[test]
aws_access_key_id = ***
aws_secret_access_key= ***
mfa_serial=(arn-of-the-mfa-device)
duration_seconds=3600

Temporary credentials can be created by running the aws-assume-role command and specifying an MFA profile and token.

$ aws-assume-role
AWS profile [default]: test
Token code: ***
Access key ID: ***
Successfully updated test-assume profile. [~/.aws/credentials]

Temporary credentials are written to a credential file in the format {PROFILE}-assume.

$ cat ~/.aws/credentials

[test-assume]
aws_access_key_id = ***
aws_secret_access_key = ***
aws_session_token = ***

You need to add region settings in config.

$ cat ~/.aws/config

[test-assume]
region=(region)
output=json

You can execute AWS commands via Assume role.

$ aws --profile test-assume sts get-caller-identity
{
    "UserId": "***,
    "Account": "***",
    "Arn": "***"
}