maws

maws

maws is a wrapper of AWS CLI, that automatically authenticate the current user with MFA and renew once the token is expired.

Installation

Following this to require MFA authentication for IAM users that use the AWS CLI.

Install the AWS CLI version 2.

Install maws:

# with homebrew
brew install favadi/maws/maws

# with go
go get github.com/favadi/maws

Or download the pre-built binaries in releases section.

Put following configuration to your shell configuration file (~/.bashrc, ~/.zshrc):

# if you are using non-default aws profile
export MAWS_PROFILE=""

# enable completion, unnecessary if installed with homebrew
complete -C aws_completer maws

If you are using amazon-ecr-credential-helper, there is docker-credential-mecr-login wrapper script that use maws instead of aws for MFA authentication. To use it, copy docker-credential-mecr-login to somewhere in PATH (unnecessary if installed with homebrew) and replace ecr-login in ~/.docker/config.json with mecr-login.

Example usages

# first time, user will be prompted for OTP code
maws s3 ls

# second time, the token will be automatically loaded, user will not be prompted for OTP code
maws s3 ls

# a million of time later, the token is expired, user will be prompted for OTP code
maws s3 ls

# delete the persisted session token, the user will be prompted for OTP code next time
maws delete-session-token

# export environment variables to use persisted session token with normal aws command
eval $(maws export-envs)