Instantiating Multiple Providers with a loop #19932
Description
Current Terraform Version
Terraform v0.11.11
Use-cases
In my current situation, I am using the AWS provider so I will scope this feature request to that specific provider, although this may extend to other providers as well.
I am attempting to create resources in multiple AWS accounts. The number of the accounts ranges from 0....x and will be dynamic. I would like to be able to instantiate multiple providers which can assume a role in each account, and in turn, create resources with the associated provider without hard-coding providers for each subsequent account.
For example, something like this:
variable "accounts" {
type = "list"
default = ["123456789012", "210987654321"]
}
variable "names" {
type = "map"
default = {
"123456789012" = "foo"
"210987654321" = "bar"
}
}
provider "aws" {
count = "${length(var.accounts)}"
alias = "${lookup(var.names, element(var.accounts, count.index))}"
assume_role {
role_arn = "arn:aws:iam::${element(var.accounts, count.index)}:role/ASSUMEDROLE"
}
resource "aws_instance" "web" {
count = "${length(var.accounts)}"
provider = "aws.${lookup(var.names, element(var.accounts, count.index))}"
ami = "${data.aws_ami.ubuntu.id}"
instance_type = "t2.micro"
tags = {
Name = "HelloWorld"
}
}