rapture

Rapture is a shell-integrated CLI tool for assuming AWS IAM roles easily and quickly.

Usage Example

$ rapture whoami
arn:aws:iam::999988887777:user/janesmith

$ rapture alias set admin arn:aws:iam::000011110000:role/admin-power
alias 'admin' was set to 'arn:aws:iam::000011110000:role/admin-power'

$ rapture alias ls
arn:aws:iam::000011110000:role/admin-power admin
arn:aws:iam::302830283028:role/marketing-access marketing

$ rapture assume admin
Assumed role 'arn:aws:iam::000011110000:role/admin-power'

$ rapture whoami
arn:aws:sts::000011110000:assumed-role/admin-power/rapture-janesmith

$ rapture resume
Resumed base credentials

$ rapture whoami
arn:aws:iam::999988887777:user/janesmith

Prerequisites

A machine that can run golang binaries
Bash, zsh, or fish

Installation

First, install the latest Rapture binary for your platform from Github and copy it to a directory in your PATH. Or if you prefer you can build it yourself (Go 1.12 or higher required):

$ go install github.com/daveadams/go-rapture/cmd/rapture@latest

To configure your shell to load Rapture at startup, follow the instructions below for your specific shell.

Bash/Zsh Installation

In your shell startup file (usually ~/.bash_profile or ~/.bashrc; for Zsh usually ~/.zshrc), add the following line:

eval "$( command rapture shell-init )"

Fish Installation

In your Fish startup file (~/.config/fish/config.fish), add the following line:

eval ( command rapture shell-init )

Verifying the setup

Finally, open a new terminal window to verify that Rapture is automatically loaded:

$ rapture check
OK: Rapture is set up correctly

Upgrading from Bash Rapture

Simply remove the command source ~/.rapture/rapture.sh from your shell startup script, and replace it with the new command mentioned above. The old Rapture configuration files will continue to work in the same way.

Configuration

No configuration is required to start using Rapture, but Rapture will store configuration in config.json, aliases.json, and accounts.json in the ~/.rapture directory.

Environment Variables

Rapture exports the RAPTURE_ROLE environment variable with the user-supplied identifier of the currently-assumed role, either the role alias, or the ARN.

Rapture also exports the RAPTURE_ASSUMED_ROLE_ARN environment variable to the full ARN of the currently assumed role.

Both of these environment variables are unset when base credentials are loaded.

Vaulted integration

Rapture does not manage your secrets for you. But Rapture is integrated with Vaulted for providing secure storage of AWS access keys (and other secrets) in an easily manageable format and for loading them into your environment.

If you have your AWS credentials configured in a vault named default, then you can simply run:

$ rapture init

This will run vaulted on your behalf to load the credentials from the default Vault into your current environment. Or you can specify a different vault name:

$ rapture init awsvault

If you set a value for default_vault in ~/.rapture/config.json, Rapture will use that name instead of default as the default vault to decrypt.

License

This software is public domain. No rights are reserved. See LICENSE for more information.