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Description

Like #9061 but with different resource (aws_ec2_transit_gateway_vpc_attachment):

I have a TGW in account 1:

resource "aws_ec2_transit_gateway" "the_tgw" {
  amazon_side_asn                 = "65501"
  auto_accept_shared_attachments  = "enable"
  default_route_table_association = "disable"
  default_route_table_propagation = "disable"
  description                     = "My TGW in account 1"
  dns_support                     = "enable"
  vpn_ecmp_support                = "enable"
  tags = tomap({
    Name = "TGW"
  })
}

And share it via RAM with account 2.

Now I create a aws_ec2_transit_gateway_vpc_attachment in account 2 (different terraform-run) for the shared TGW:

data "aws_ec2_transit_gateway" "the_tgw" {
  filter {
    name = "options.amazon-side-asn"
    values = ["65501"]
  }
}

# <snip>create a VPC in account 2 with subnets </snip>

resource "aws_ec2_transit_gateway_vpc_attachment" "vpc_attachment_to_tgw" {

  transit_gateway_id = data.aws_ec2_transit_gateway.the_tgw.id
  vpc_id             = ... # my vpc.ID
  subnet_ids         = ... # my subnet.IDs
  tags =tomap({
      "Name" = "TGW attachment for VPC in account 2"
  })
}

Terraform CLI and Terraform AWS Provider Version

> terraform -v
Terraform v1.0.3
on windows_amd64
+ provider registry.terraform.io/hashicorp/aws v3.59.0

Affected Resource(s)

• aws_ec2_transit_gateway_vpc_attachment,

Expected Behavior

Within account 1 the TGW attachment's tags are visible

Actual Behavior

Attachment's tags not visible in account 1 (empty), only the tgw attachment itself.

References

• Tags for AWS resources created implicitly by other resources #9061