Allows the hub to also play the role of the satellite

README.md

@@ -65,6 +65,8 @@ Check the `subnet_name_keyword_selector` variable if you want to change this.
 | satellite\_create | Boolean flag for toggling the handling of satellite resources | `bool` | `false` | no |
 | satellite\_destination\_cidr\_blocks | List of CIDRs to be routed for the satellite | `list` | `[]` | no |
 | subnet\_filters | List of maps selecting the subnet(s) for which the routing will be added | <pre>list(object({<br>    name   = string<br>    values = list(string)<br>  }))<br></pre> | <pre>[<br>  {<br>    "name": "tag:Name",<br>    "values": [<br>      "private"<br>    ]<br>  }<br>]<br></pre> | no |
+| transit\_gateway\_default\_route\_table\_association | Set this to false when the hub account also becomes a satellite. Check the official docs for more info. | `bool` | `true` | no |
+| transit\_gateway\_default\_route\_table\_propagation | Set this to false when the hub account also becomes a satellite. Check the official docs for more info. | `bool` | `true` | no |
 | transit\_gateway\_hub\_name | Name of the Transit Gateway to attach to | `string` | `""` | no |
 | transit\_gateway\_id | Identifier of the Transit Gateway | `string` | `""` | no |
 | transit\_gateway\_route\_table\_id | Identifier of the Transit Gateway Route Table | `string` | `""` | no |

main.tf

@@ -8,6 +8,9 @@ resource "aws_ec2_transit_gateway_vpc_attachment" "this" {
   transit_gateway_id = local.transit_gateway_id
   vpc_id             = data.aws_vpc.this[0].id
 
+  transit_gateway_default_route_table_association = var.transit_gateway_default_route_table_association
+  transit_gateway_default_route_table_propagation = var.transit_gateway_default_route_table_propagation
+
   # When we create the TGW and the association through RAM in one run, we need
   # this to escape the race condition.
   depends_on = [var.ram_resource_association_id]

variables.tf

@@ -91,3 +91,15 @@ variable "route_entire_satellite_vpc" {
   type        = bool
   default     = false
 }
+
+variable "transit_gateway_default_route_table_association" {
+  description = "Set this to false when the hub account also becomes a satellite. Check the official docs for more info."
+  type        = bool
+  default     = true
+}
+
+variable "transit_gateway_default_route_table_propagation" {
+  description = "Set this to false when the hub account also becomes a satellite. Check the official docs for more info."
+  type        = bool
+  default     = true
+}