website: An example of referencing resources with "count"
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@ -229,6 +229,38 @@ resource "aws_instance" "app" {
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}
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```
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To reference a particular instance of a resource you can use `resource.foo.*.id[#]` where `#` is the index number of the instance.
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For example, to create a list of all [AWS subnet](/docs/providers/aws/r/subnet.html) ids vs referencing a specific subnet in the list you can use this syntax:
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```hcl
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resource "aws_vpc" "foo" {
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cidr_block = "198.18.0.0/16"
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}
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resource "aws_subnet" "bar" {
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count = 2
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vpc_id = "${aws_vpc.foo.id}"
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cidr_block = "${cidrsubnet(aws_vpc.foo.cidr_block, 8, count.index)}"
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}
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output "vpc_id" {
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value = "${aws_vpc.foo.id}"
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}
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output "all_subnet_ids" {
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value = "${aws_subnet.bar.*.id}"
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}
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output "subnet_id_0" {
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value = "${aws_subnet.bar.*.id[0]}"
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}
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output "subnet_id_1" {
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value = "${aws_subnet.bar.*.id[1]}"
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}
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```
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## Multiple Provider Instances
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By default, a resource targets the provider based on its type. For example
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