A Terraform module that creates IAM role with provided JSON IAM polices documents.

• If var.enabled set false the module can be used as IAM Policy Document Aggregator because output.policy always aggregates var.policy_documents
• List size var.policy_documents limited to 10

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Example of running atmos to manage infrastructure from our Quick Start tutorial.

This example creates a role with the name eg-prod-app with permission to grant read-write access to S3 bucket, and gives permission to the entities specified in principals_arns to assume the role.

data "aws_iam_policy_document" "resource_full_access" {
  statement {
    sid       = "FullAccess"
    effect    = "Allow"
    resources = ["arn:aws:s3:::bucketname/path/*"]

    actions = [
      "s3:PutObject",
      "s3:PutObjectAcl",
      "s3:GetObject",
      "s3:DeleteObject",
      "s3:ListBucket",
      "s3:ListBucketMultipartUploads",
      "s3:GetBucketLocation",
      "s3:AbortMultipartUpload"
    ]
  }
}

data "aws_iam_policy_document" "base" {
  statement {
    sid = "BaseAccess"

    actions = [
      "s3:ListBucket",
      "s3:ListBucketVersions"
    ]

    resources = ["arn:aws:s3:::bucketname"]
    effect    = "Allow"
  }
}

module "role" {
  source = "cloudposse/iam-role/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version     = "x.x.x"

  enabled   = true
  namespace = "eg"
  stage     = "prod"
  name      = "app"

  policy_description = "Allow S3 FullAccess"
  role_description   = "IAM role with permissions to perform actions on S3 resources"

  principals = {
    AWS = ["arn:aws:iam::123456789012:role/workers"]
  }

  policy_documents = [
    data.aws_iam_policy_document.resource_full_access.json,
    data.aws_iam_policy_document.base.json
  ]
}

For a complete example, see examples/complete.

For automated tests of the complete example using bats and Terratest (which tests and deploys the example on AWS), see test.

[
  "sts:AssumeRole",
  "sts:TagSession"
]

list(object({
    test     = string
    variable = string
    values   = list(string)
  }))

{
  "additional_tag_map": {},
  "attributes": [],
  "delimiter": null,
  "descriptor_formats": {},
  "enabled": true,
  "environment": null,
  "id_length_limit": null,
  "label_key_case": null,
  "label_order": [],
  "label_value_case": null,
  "labels_as_tags": [
    "unset"
  ],
  "name": null,
  "namespace": null,
  "regex_replace_chars": null,
  "stage": null,
  "tags": {},
  "tenant": null
}

[
  "default"
]

Check out these related projects.

• terraform-aws-iam-policy-document-aggregator - Terraform module to aggregate multiple IAM policy documents into single policy document
• terraform-aws-iam-chamber-s3-role - Terraform module to provision an IAM role with configurable permissions to access S3 as chamber backend

This project is under active development, and we encourage contributions from our community.

Many thanks to our outstanding contributors:

For 🐛 bug reports & feature requests, please use the issue tracker.

In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.

1. Review our Code of Conduct and Contributor Guidelines.
2. Fork the repo on GitHub
3. Clone the project to your own machine
4. Commit changes to your own branch
5. Push your work back up to your fork
6. Submit a Pull Request so that we can review your changes

NOTE: Be sure to merge the latest changes from "upstream" before making a pull request!

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