Google KMS Terraform Module
Simple Cloud KMS module that allows managing a keyring, zero or more keys in the keyring, and IAM role bindings on individual keys.
The resources/services/activations/deletions that this module will create/trigger are:
- Create a KMS keyring in the provided project
- Create zero or more keys in the keyring
- Create IAM role bindings for owners, encrypters, decrypters
Compatibility
This module is meant for use with Terraform 0.13+ and tested using Terraform 1.0+. If you find incompatibilities using Terraform >=0.13, please open an issue. If you haven't upgraded and need a Terraform 0.12.x-compatible version of this module, the last released version intended for Terraform 0.12.x is v1.2.0.
Usage
Basic usage of this module is as follows:
module "kms" {
source = "terraform-google-modules/kms/google"
version = "~> 1.2"
project_id = "<PROJECT ID>"
location = "europe"
keyring = "sample-keyring"
keys = ["foo", "spam"]
set_owners_for = ["foo", "spam"]
owners = [
"group:[email protected],group:[email protected]",
"group:[email protected]",
]
}Functional examples are included in the examples directory.
Inputs
| Name | Description | Type | Default | Required |
|---|---|---|---|---|
| decrypters | List of comma-separated owners for each key declared in set_decrypters_for. | list(string) |
[] |
no |
| encrypters | List of comma-separated owners for each key declared in set_encrypters_for. | list(string) |
[] |
no |
| key_algorithm | The algorithm to use when creating a version based on this template. See the https://cloud.google.com/kms/docs/reference/rest/v1/CryptoKeyVersionAlgorithm for possible inputs. | string |
"GOOGLE_SYMMETRIC_ENCRYPTION" |
no |
| key_protection_level | The protection level to use when creating a version based on this template. Default value: "SOFTWARE" Possible values: ["SOFTWARE", "HSM"] | string |
"SOFTWARE" |
no |
| key_rotation_period | n/a | string |
"100000s" |
no |
| keyring | Keyring name. | string |
n/a | yes |
| keys | Key names. | list(string) |
[] |
no |
| labels | Labels, provided as a map | map(string) |
{} |
no |
| location | Location for the keyring. | string |
n/a | yes |
| owners | List of comma-separated owners for each key declared in set_owners_for. | list(string) |
[] |
no |
| prevent_destroy | Set the prevent_destroy lifecycle attribute on keys. | bool |
true |
no |
| project_id | Project id where the keyring will be created. | string |
n/a | yes |
| purpose | The immutable purpose of the CryptoKey. Possible values are ENCRYPT_DECRYPT, ASYMMETRIC_SIGN, and ASYMMETRIC_DECRYPT. | string |
"ENCRYPT_DECRYPT" |
no |
| set_decrypters_for | Name of keys for which decrypters will be set. | list(string) |
[] |
no |
| set_encrypters_for | Name of keys for which encrypters will be set. | list(string) |
[] |
no |
| set_owners_for | Name of keys for which owners will be set. | list(string) |
[] |
no |
Outputs
| Name | Description |
|---|---|
| keyring | Self link of the keyring. |
| keyring_name | Name of the keyring. |
| keyring_resource | Keyring resource. |
| keys | Map of key name => key self link. |
Requirements
These sections describe requirements for using this module.
Software
The following dependencies must be available:
- Terraform >= 0.13.0
- Terraform Provider for GCP plugin v3.0
Service Account
A service account with one of the following roles must be used to provision the resources of this module:
- Cloud KMS Admin:
roles/cloudkms.adminor - Owner:
roles/owner
The Project Factory module and the IAM module may be used in combination to provision a service account with the necessary roles applied.
APIs
A project with the following APIs enabled must be used to host the resources of this module:
- Google Cloud Key Management Service:
cloudkms.googleapis.com
The Project Factory module can be used to provision a project with the necessary APIs enabled.
Contributing
Refer to the contribution guidelines for information on contributing to this module.