terraform-google-storage-bucket-iam

A Terraform module to create a Google Storage Bucket 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 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_storage_bucket_iam_binding
• google_storage_bucket_iam_member
• google_storage_bucket_iam_policy

Getting Started

Most basic usage just setting required arguments:

module "terraform-google-storage-bucket-iam" {
  source = "github.com/mineiros-io/terraform-google-storage-bucket-iam?ref=v0.1.1"

  bucket  = "my-bucket"
  role    = "roles/storage.admin"
  members = ["user:member@example.com"]
}

Module Argument Reference

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

Top-level Arguments

Main Resource Configuration

• bucket: (Required string)

  Used to find the parent resource to bind the IAM policy to.

• 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, alice@gmail.com or joe@example.com.
  • serviceAccount:{emailid}: An email address that represents a service account. For example, my-other-app@appspot.gserviceaccount.com.
  • group:{emailid}: An email address that represents a Google group. For example, admins@example.com.
  • 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.

  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}.

• authoritative: (Optional bool)

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

  Default is true.

• condition: (Optional object(condition))

  An IAM Condition for the target project IAM binding.

  Example:

  role          = "roles/storage.admin"
  authoritative = true
  condition = {
    title = "no_terraform_state_access"
    expression = <<EOT
      resource.type ==  "storage.googleapis.com/Bucket" &&
      resource.name != "terraform-state"
    EOT
  }

  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.

• policy_bindings: (Optional list(policy_binding))

  A list of IAM policy bindings.

  Example:

  policy_bindings = [{
    role    = "roles/viewer"
    members = ["user:member@example.com"]
  }]

  Each policy_binding object in the list accepts the following attributes:

  • role: (Required string)

    The role that should be applied.

  • members: (Optional set(string))

    Identities that will be granted the privilege in role.

    Default is var.members.

  • 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 = [
    google_network.network
  ]

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

• https://cloud.google.com/storage

Terraform Google Provider Documentation:

• https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/storage_bucket_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 hello@mineiros.io 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 © 2020-2022 Mineiros GmbH