terraform-将路线添加到多个路线表中

Question

I need to add the same route to multiple route tables in AWS. I want to use terraform for this. For a single table I can use something like:

resource "aws_route" "route" {
  route_table_id = "${var.routetableid}"
  destination_cidr_block = "${var.destcidrblock}"
  instance_id = "${aws_instance.vpn.id}"
}

However I'd like to add the route for every route_table_id that's specified by the user as a list. Is this possible?

Answer 1

Terraform resources allow you to loop through them using the count meta parameter .

In your case you could do something like this:

variable "route_tables" { type = "list" }

resource "aws_route" "route" {
  count = "${length(var.route_tables)}"
  route_table_id = "${element(var.route_tables, count.index)}"
  destination_cidr_block = "${var.destcidrblock}"
  instance_id = "${aws_instance.vpn.id}"
}

Where route_tables is a list of route table ids.