terraform-google-secret-manager-iam

A Terraform module to create a Google Secret Manager IAM on Google Cloud Services (GCP).

This module supports Terraform version 1 and is compatible with the Terraform Google Provider version 4. and 5._**

This module is part of our Infrastructure as Code (IaC) framework that enables our users and customers to easily deploy and manage reusable, secure, and production-grade cloud infrastructure.

• Module Features
• Getting Started
• Module Argument Reference
  • Top-level Arguments
    • Main Resource Configuration
    • Module Configuration
• Module Attributes Reference
• Module Outputs
• External Documentation
  • Google Documentation
  • Terraform Google Provider Documentation
• Module Versioning
  • Backwards compatibility in 0.0.z and 0.y.z version
• About Mineiros
• Reporting Issues
• Contributing
• Makefile Targets
• License

Module Features

This module implements the following terraform resources:

• google_secret_manager_secret_iam_binding
• google_secret_manager_secret_iam_member
• google_secret_manager_secret_iam_policy

Getting Started

Most basic usage just setting required arguments:

module "terraform-google-secret-manager-iam" {
  source = "github.com/mineiros-io/terraform-google-secret-manager-iam.git?ref=v0.3.0"

  secret_id = google_secret_manager_secret.secret-basic.secret_id
  role      = "roles/secretmanager.secretAccessor"
  members   = ["user:[email protected]"]
}

Module Argument Reference

See variables.tf and examples/ for details and use-cases.

Top-level Arguments

Main Resource Configuration

• secret_id: (Required string)

  The id of the secret.

• members: (Optional set(string))

  Identities that will be granted the privilege in role. Each entry can have one of the following values:

  • allUsers: A special identifier that represents anyone who is on the internet; with or without a Google account.
  • allAuthenticatedUsers: A special identifier that represents anyone who is authenticated with a Google account or a service account.
  • user:{emailid}: An email address that represents a specific Google account. For example, [email protected] or [email protected].
  • serviceAccount:{emailid}: An email address that represents a service account. For example, [email protected].
  • group:{emailid}: An email address that represents a Google group. For example, [email protected].
  • domain:{domain}: A G Suite domain (primary, instead of alias) name that represents all the users of that domain. For example, google.com or example.com.
  • projectOwner:projectid: Owners of the given project. For example, projectOwner:my-example-project
  • projectEditor:projectid: Editors of the given project. For example, projectEditor:my-example-project
  • projectViewer:projectid: Viewers of the given project. For example, projectViewer:my-example-project
  • computed:{identifier}: An existing key from var.computed_members_map.
  • principal://{identifier}: Principal identifier as documented by Google Cloud. For example principal://iam.googleapis.com/projects/PROJECT_NUMBER/locations/global/workloadIdentityPools/POOL_ID/subject/SUBJECT_ATTRIBUTE_VALUE
  • principalSet://{identifier}: Principal set identifier as documented by Google Cloud. For example principalSet://iam.googleapis.com/projects/PROJECT_NUMBER/locations/global/workloadIdentityPools/POOL_ID/*

  Default is [].

• computed_members_map: (Optional map(string))

  A map of identifiers to identities to be replaced in 'var.members' or in members of policy_bindings to handle terraform computed values. The format of each value must satisfy the format as described in var.members.

  Default is {}.

• role: (Optional string)

  The role that should be applied. Note that custom roles must be of the format [projects|organizations]/{parent-name}/roles/{role-name}. Must be set if policy_bindings is unset.

• project: (Optional string)

  The ID of the project in which the resource belongs. If it is not provided, the project will be parsed from the identifier of the parent resource. If no project is provided in the parent identifier and no project is specified, the provider project is used.

• authoritative: (Optional bool)

  Whether to exclusively set (authoritative mode) or add (non-authoritative/additive mode) members to the role.

  Default is true.

• policy_bindings: (Optional list(policy_binding))

  A list of IAM policy bindings. If set, role is ignored and a policy_binding is created.

  Example:

  policy_bindings = [
    {
      role    = "roles/secretmanager.secretAccessor"
      members = [
        "user:[email protected]",
      ]
    }
  ]

  Each policy_binding object in the list accepts the following attributes:

  • role: (Required string)

    The role that will be grated to the members.

  • members: (Required set(string))

    A set of identities that will be granted the privilege in role. Each entry can have one of the following values:

    • allUsers: A special identifier that represents anyone who is on the internet; with or without a Google account.
    • allAuthenticatedUsers: A special identifier that represents anyone who is authenticated with a Google account or a service account.
    • user:{emailid}: An email address that represents a specific Google account. For example, [email protected] or [email protected].
    • serviceAccount:{emailid}: An email address that represents a service account. For example, [email protected].
    • group:{emailid}: An email address that represents a Google group. For example, [email protected].
    • domain:{domain}: A G Suite domain (primary, instead of alias) name that represents all the users of that domain. For example, google.com or example.com.

  • condition: (Optional object(condition))

    An IAM Condition for a given binding.

    Example:

    condition = {
      expression = "request.time < timestamp(\"2022-01-01T00:00:00Z\")"
      title      = "expires_after_2021_12_31"
    }

    The condition object accepts the following attributes:

    • expression: (Required string)

      Textual representation of an expression in Common Expression Language syntax.

    • title: (Required string)

      A title for the expression, i.e. a short string describing its purpose.

    • description: (Optional string)

      An optional description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI.

Module Configuration

• module_enabled: (Optional bool)

  Specifies whether resources in the module will be created.

  Default is true.

• module_depends_on: (Optional list(dependency))

  A list of dependencies. Any object can be assigned to this list to define a hidden external dependency.

  Example:

  module_depends_on = [
    null_resource.name
  ]

Module Attributes Reference

The following attributes are exported in the outputs of the module:

• module_enabled

  Whether this module is enabled.

• iam

  All attributes of the created iam_binding or iam_member or iam_policy resource according to the mode.

Module Outputs

The following attributes are exported in the outputs of the module:

• iam: (object(iam))

  All attributes of the created iam_binding or iam_member or iam_policy resource according to the mode.

External Documentation

Google Documentation

• Secret Manager: https://cloud.google.com/secret-manager/docs
• Secret Manager Access Control: https://cloud.google.com/secret-manager/docs/access-control

Terraform Google Provider Documentation

• https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/secret_manager_secret
• https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/secret_manager_secret_iam

Module Versioning

This Module follows the principles of Semantic Versioning (SemVer).

Given a version number MAJOR.MINOR.PATCH, we increment the:

1. MAJOR version when we make incompatible changes,
2. MINOR version when we add functionality in a backwards compatible manner, and
3. PATCH version when we make backwards compatible bug fixes.

Backwards compatibility in 0.0.z and 0.y.z version

• Backwards compatibility in versions 0.0.z is not guaranteed when z is increased. (Initial development)
• Backwards compatibility in versions 0.y.z is not guaranteed when y is increased. (Pre-release)

About Mineiros

Mineiros is a remote-first company headquartered in Berlin, Germany that solves development, automation and security challenges in cloud infrastructure.

Our vision is to massively reduce time and overhead for teams to manage and deploy production-grade and secure cloud infrastructure.

We offer commercial support for all of our modules and encourage you to reach out if you have any questions or need help. Feel free to email us at [email protected] or join our Community Slack channel.

Reporting Issues

We use GitHub Issues to track community reported issues and missing features.

Contributing

Contributions are always encouraged and welcome! For the process of accepting changes, we use Pull Requests. If you'd like more information, please see our Contribution Guidelines.

Makefile Targets

This repository comes with a handy Makefile. Run make help to see details on each available target.

License

This module is licensed under the Apache License Version 2.0, January 2004. Please see LICENSE for full details.

Copyright © 2020-2021 Mineiros GmbH