Vault Authentication plugin for Chef

At the moment the README is lacking important information and should not be considered complete

Supported sources:

* Chef policy
* Roles
* SolR searches with cache

Quick-start

Setup

export TMPDIR=$(mktemp -d)

Build the binary

go build -o $TMPDIR/plugin

Starting Vault with plugins

Here's a simple line you can use to start a dev instance with plugins already catalogued

vault server -dev -dev-plugin-dir=$(realpath $TMPDIR) -dev-plugin-init -dev-root-token-id=devtoken -log-level=trace

Otherwise, use the regular way to catalog them

export SHA256=$(shasum -a 256 "$TMPDIR/plugin" | cut -d' ' -f1)
vault write sys/plugins/catalog/vault-auth-plugin-chef sha_256="${SHA256}" command="plugin"

vault auth enable -path="chef" -plugin-name="vault-auth-plugin-chef" plugin

Configuration

Top level

vault write auth/chef/config host="http://chef-server.example.com"

Configure a policy

vault write auth/chef/policy/my-policy policies="default" period=86400

OPT: Add a search mapping

# Allowed staleness is an optionnal caching mechanism for big chef deployments

vault write auth/chef/search/recipes policies=openssh-secret search_query="recipes:openssh*" allowed_staleness=60

Login !

vault write auth/chef/login node_name="node_name" private_key="private_key"

References:

• https://github.com/hashicorp/vault-auth-plugin-example
• https://www.hashicorp.com/blog/building-a-vault-secure-plugin
• https://www.vaultproject.io/docs/internals/plugins.html