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weep

Weep is a CLI utility for retreiving AWS credentials from ConsoleMe. Weep can run a local instance metadata service proxy, or export credentials as environment variables for your AWS needs.

Documentation

This README contains developer documentation. Weep user documentation can be found on GitBook.

Configuration

Weep can be compiled with an embedded configuration (See the Building section below), or it can get its configuration from a YAML-formatted file. We've included an example config file in example-config.yaml.

Weep searches for a configuration in the following locations:

  • embedded configuration (see below)
  • /etc/weep/weep.yaml
  • ~/.weep/weep.yaml
  • ./weep.yaml

Multiple configurations in these locations will be merged in the order listed above (e.g. entries in ./weep.yaml will take precedence over ~/.weep/weep.yaml.

You can also specify a config file as a CLI arg. This configuration will be used exclusively and will not be merged with other configurations:

weep --config somethingdifferent.yaml list

Weep supports authenticating to ConsoleMe in either a standalone challenge mode (ConsoleMe will authenticate the user according to its settings), or mutual TLS (ConsoleMe has to be configured to accept mutual TLS).

In challenge mode, Weep will prompt the user for their username the first time they authenticate, and then attempt to derive their username from their valid/expired jwt on subsequent attempts. You can also specify the desired username in weep's configuration under the challenge_settings.user setting as seen in example-config.yaml.

Pre-Commit Setup

Weep uses pre-commit to run unit tests and Go linting. Pre-commit documentation can be found on pre-commit

Installation

You can install pre-commit using the following steps:

Using pip:

pip install pre-commit

Using homebrew:

brew install pre-commit

Using Conda:

conda install -c conda-forge pre-commit

Validate your installation with the following:

$ pre-commit --version
pre-commit 2.9.3

Configuration

Set up the git hook scripts to run automatically with git commit

$ pre-commit install
pre-commit installed at .git/hooks/pre-commit

Building

In most cases, weep can be built by running the make command in the repository root. make release (requires upx) will build and compress the binary for distribution.

Embedded configuration

weep binaries can be shipped with an embedded configuration to allow shipping an "all-in-one" binary. An example of such a configuration is included in example-config.yaml.

To compile with an embedded config, set the EMBEDDED_CONFIG_FILE environment variable at build time. The value of this variable MUST be the absolute path of the configuration file relative to the root of the module:

EMBEDDED_CONFIG_FILE=/example-config.yaml make

Note that the embedded configuration can be overridden by a configuration file in the locations listed above.

Docker

Building and Running

make build-docker
docker run -v ~</optional/path/to/your/mtls/certs>:</optional/path/to/your/mtls/certs> --rm weep --meta-data --role <roleArn>

Releasing

Weep uses goreleaser in Github Actions for releases. Check their install docs if you would like to experiment with the release process locally.

To create a new release, create and push a tag using the release script (requires svu):

./scripts/release.sh

Goreleaser will automatically create a release on the Releases page.

Generating docs

Weep has a built-in command to generate command documentation (in the docs/ directory):

weep docs