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"

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

  enable_auto_accept_shared_attachments = true

  vpc_attachments = {
    vpc = {
      vpc_id       = "vpc-1234556abcdef"
      subnet_ids   = ["subnet-abcde012", "subnet-bcde012a", "subnet-fghi345a"]
      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 = {
    Terraform   = "true"
    Environment = "dev"
  }
}

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)).

Authors

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

License

Apache 2 Licensed. See LICENSE for full details.