AWS Transit Gateway Terraform module

Terraform module which creates Transit Gateway resources on AWS.

Usage with VPC module

module "tgw" {
  source  = "terraform-aws-modules/transit-gateway/aws"
  version = "~> 2.0"

  name        = "my-tgw"
  description = "My TGW shared with several other AWS accounts"

  enable_auto_accept_shared_attachments = true

  vpc_attachments = {
    vpc = {
      vpc_id       = module.vpc.vpc_id
      subnet_ids   = module.vpc.private_subnets
      dns_support  = true
      ipv6_support = true

      tgw_routes = [
        {
          destination_cidr_block = "30.0.0.0/16"
        },
        {
          blackhole = true
          destination_cidr_block = "40.0.0.0/20"
        }
      ]
    }
  }

  ram_allow_external_principals = true
  ram_principals = [307990089504]

  tags = {
    Purpose = "tgw-complete-example"
  }
}

module "vpc" {
  source  = "terraform-aws-modules/vpc/aws"
  version = "~> 3.0"

  name = "my-vpc"

  cidr = "10.10.0.0/16"

  azs             = ["eu-west-1a", "eu-west-1b", "eu-west-1c"]
  private_subnets = ["10.10.1.0/24", "10.10.2.0/24", "10.10.3.0/24"]

  enable_ipv6                                    = true
  private_subnet_assign_ipv6_address_on_creation = true
  private_subnet_ipv6_prefixes                   = [0, 1, 2]
}

Examples

• Complete example shows TGW in combination with the VPC module and Resource Access Manager (RAM).
• Multi-account example shows TGW resources shared with different AWS accounts (via Resource Access Manager (RAM)).

Requirements

Providers

Modules

No modules.

Resources

Inputs

Outputs

Authors

Module is maintained by Anton Babenko with help from these awesome contributors.

License

Apache 2 Licensed. See LICENSE for full details.