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An InSpec input source plugin for HashiCorp Vault
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README.md

inspec-vault Plugin

This is a plugin for Chef InSpec that allows Inputs to be read from HashiCorp Vault.

  • Project State: Active (but EXPERIMENTAL)
  • Issues Response SLA: 3 business days
  • Pull Request Response SLA: 3 business days

For more information on project states and SLAs, see this documentation.

Notice - Experimental Project

This Chef InSpec plugin is in the early stages of research and development. Functionality may be defective, incomplete, or be withdrawn in the future. If you are interested in helping this project mature, please join the conversation or contribute code at the inspec-vault project.

To Install This Plugin

Assuming it has been published to RubyGems, you can install this gem using:

you@machine $ inspec plugin install inspec-vault

Loading Secrets into Vault

A full introduction to Vault is beyond the scope of this document, but begin by downloading a recent version from https://www.vaultproject.io . Then, start a Vault dev-mode server with the following command:

$ vault server -dev

From there, you can then store an input. For example, look at the command below to store an input named my_input with the value of 2, for the my_profile profile. Once entered, Vault responds with metadata about the entry.

[cwolfe@lodi inspec-vault]$ vault kv put secret/inspec/my_profile my_input=2
Key              Value
---              -----
created_time     2019-09-10T17:54:16.237055Z
deletion_time    n/a
destroyed        false
version          1

With that value stored, Chef InSpec will now be able to retrieve the value.

What This Plugin Does

With the inspec-vault plugin enabled, Chef InSpec will contact the Vault server whenever an input() DSL call appears in profile control code. For example, whenever profile code like this is encountered:

# In profile "my_profile"
describe input("some_input") do
  it { should cmp "some_expected_value" }
end

Chef InSpec will determine a secret lookup path and access Vault. With no other settings, Chef InSpec will look for a Vault secret located at secret/inspec/my_profile with a key named "some_input". Chef InSpec will use the Vault secret if found, but otherwise it will fall back to other means of resolving the input, such as the profile metadata or CLI values.

Configuring the Plugin

Each plugin option may be set either as an environment variable, or as a plugin option in your Chef InSpec configuration file at ~/.inspec/config.json. For example, to set the prefix_path option in the config file, lay out the config file as follows:

{
  "version": "1.2",
  "plugins":{
    "inspec-vault":{
      "prefix_path":"my-profiles"
    }
  }
}

Config file option names are always lowercase.

This plugin supports the following options:

INSPEC_VAULT_MOUNT_POINT

mount_point

A string that indicates where the key-value path should begin; default value is "secret". The path is constructed as <mount_point>/data/<path_prefix>/<profile_name>.

INSPEC_VAULT_PATH_PREFIX

path_prefix

A string that indicates the latter portion of the key-value path; default value is "inspec". The path is constructed as <mount_point>/data/<path_prefix>/<profile_name>.

INSPEC_VAULT_PRIORITY

priority

A number between 0 and 100, default 60. When two input provides both provide a value for the same input name, the priority determines which providers' value is used, with the higher priority prevailing. Core Chef InSpec providers only range up to 50, so inspec-vault will (by default) override any other input provider.

VAULT_ADDR

vault_addr

This environment variable is the URL and port of your Vault installation. Default is http://127.0.0.1:8200.

VAULT_TOKEN

This value is the secret used to authenticate to Vault. Required, no default provided.

Developing This Plugin

Please have a look at our CONTRIBUTING.md for general guidelines.

Testing

Run bundle exec rake test:lint for linting, bundle exec rake test:unit for unit tests, and bundle exec rake test:integration for integration tests.

Note that integration tests will download and run Vault server locally.

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