Terraform Module: terraform-aws-remote-state

Note: Instead of managing Terraform state yourself, use Terraform Cloud. See here to get started.

This Terraform module provisions a S3 bucket for remote state storage and a DynamoDB table for state locking.

The S3 bucket is created with versioning, server-side encryption, and logging enabled. A custom KMS encryption key is provisioned to encrypt objects stored in the S3 bucket. Bucket access logs are sent to a seperate S3 bucket.

2 IAM Groups are created allowing varying levels of access to the S3 bucket:

Group	Description
terraform_rw_access	allows full access to the S3 bucket and read/write access to the DynamoDB table
terraform_ro_access	allows read-only access to the S3 bucket and read/write access to the DynamoDB table

The ARNs of the IAM Policies attached to these IAM Groups are exported to allow use elsewhere such as with IAM Roles.

Prerequisites

Terraform version 0.12.0 or newer is required.

Usage

Use the module in Terraform code:

module "remote_state_setup" {
  source = "git::https://github.com/bincyber/terraform-aws-remote-state"

  aws_region          = "us-east-1"
  aws_environment     = "Prod"
  s3_bucket_name      = "terraform-remote-state"
  dynamodb_table_name = "terraform-state-locking"
}

Module Variables

A brief description of the variables used in this module:

Variable	Type	Explanation
aws_region	String	the AWS region to use (eg, us-west-2)
aws_environment	String	the name of the AWS environment (eg. Prod/Staging/Dev/Test)
s3_bucket_name	String	the name of the S3 bucket which will be used to store state files
dynamodb_table_name	String	the name of the DynamoDB table which will be used for state locking
dynamodb_read_capacity_units	Integer	the amount of read capacity units for the DynamoDB table
dynamodb_write_capacity_units	Integer	the amount of write capacity units for the DynamoDB table
iam_group_name_rw_access	String	the name of the IAM group that will have read-write access
iam_group_name_ro_access	String	the name of the IAM group that will have read-only access

Exported Attributes

See outputs.tf for exported module attributes.