Include a count that results in more than 0 or 1

[si-walker-cpi]

terraform provider: 1.3.4

It's currently pretty much impossible, as far as I'm aware, to create multiple instances from the same locals/variables config block, you have to write multiple config blocks to get multiple instances.

If there was an instance_count variable that could be passed into the module, this would solve the problems encountered at the root module level.

At the moment the count function is used as a method of deciding whether or not to deploy a resource, which seems like a waste of the function.

I'd like this code to work

variable "environment" {
  type        = string
}

locals {
  ws        = var.environment #ws = terraform.workspace

  ec2 = {
    dev = {
      #name = [0:name, 1:instance_count, 2:ami, 4:instance_type, ...etc
      mything     = ["thing", 2, "", "Ubuntu", "t3a.medium"]
      myappserver = ["app", 3, "", "Ubuntu", "t3a.medium"]
      myjump      = ["jump", 1, "", "Ubuntu", "t3a.medium"]
    }
    qa = {}
    prod = {}
  }
}

module "ec2" {
  source  = "terraform-aws-modules/ec2-instance/aws"
  version = "~> 3.0"

  for_each = {
  for key, ec2_instance in lookup(local.ec2_instance, local.ws) : key => ec2_instance
  }

  ami              = (each.value.2 == "") ? data.aws_ami.ec2[each.key].id : each.value.2
  name             = "${module.label.id}-${each.key}"
  instance_count   = each.value.1
  ... etc
}

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[bryantbiggs]

we already provide an example on how to do this https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/blob/f612ec14f996a378909dd2cd461118c1d272cf70/examples/complete/main.tf#L153-L212

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