I am trying to feed an output from one of my modules to input into my count for a module that runs right after it. But I seem to get into a “Invalid Count Argument” when I try to do this, since I guess Terraform does not know the count until terraform apply? Here is the error message below I am getting.
Error: Invalid count argument on ..\..\modules\centos-host\centos-host-configure\main.tf line 14, in resource "null_resource" "az-centos-script-download": 14: count = length(var.centos-host-vm-ids) The "count" value depends on resource attributes that cannot be determined until apply, so Terraform cannot predict how many instances will be created. To work around this, use the -target argument to first apply only the resources that the count depends on.
Any advice on how to get this sort of logic working with Terraforms?