Add aws_default_route resource

[DonBower]

Community Note

• Please vote on this issue by adding a 👍 reaction to the original issue to help the community and maintainers prioritize this request
• Please do not leave "+1" or other comments that do not add relevant new information or questions, they generate extra noise for issue followers and do not help prioritize the request
• If you are interested in working on this issue or have submitted a pull request, please leave a comment

Description

Much like the aws_default_route_table, which will assume the existence of the route table with an empty state-file, having a resource that will assume the state of a default route (0.0.0.0/0, ::/0) for a supplied route table, would allow for the modification or creation, as appropriate, of a default route

New or Affected Resource(s)

• aws_default_route

Potential Terraform Configuration

resource aws_default_route defaultRoute {
  route_table_id            = "rtb-4fbb3ac4"

  ipv4_default_route = {
    gateway_id = aws_internet_gateway.example.id
  }
  
  ipv6_default_route = {
    egress_only_gateway_id = aws_egress_only_internet_gateway.example.id
  }
}

References

[DonBower]

An alternative would be to allow for a lifecycle parameter that allows to overwrite the existing route entry, regardless of state.

i.e.:

resource "aws_route" "r" {
  route_table_id            = "rtb-4fbb3ac4"
  destination_cidr_block    = "0.0.0.0/0"
  vpc_peering_connection_id = "pcx-45ff3dc1"
  lifecycle {
    overwrite = true
  }
}

[ewbankkit]

Similar: #21350.