Terraform Resource Count implementation guide with Conditional Logic for Azure VM Scale Sets
Does anyone know how to I've been banging my head against this for hours... I've been struggling with this for a few days now and could really use some help. I'm having trouble with my Terraform code where I want to dynamically adjust the number of instances in an Azure VM Scale Set based on a variable input. I set up a conditional count based on an input variable, but it seems that Terraform does not recognize the changes correctly, and I'm getting the following behavior when trying to apply my changes: `behavior: Invalid count argument`. Here’s the relevant part of my Terraform configuration: ```hcl variable "instance_count" { description = "Number of instances in the scale set" type = number default = 3 } resource "azurerm_virtual_machine_scale_set" "example" { name = "example-vmss" location = var.location resource_group_name = azurerm_resource_group.example.name sku = "Standard_DS1_v2" instances = var.instance_count upgrade_policy { mode = "Automatic" } // Additional configuration omitted for brevity } ``` I tried changing the `instances` attribute to use a conditional expression, but the errors continue. Here’s what I attempted: ```hcl instances = var.instance_count > 0 ? var.instance_count : 1 ``` However, when I apply this, I still get errors indicating that `count` must be a positive integer. I’ve verified that the variable is being set correctly in `terraform.tfvars`, and even tried hardcoding the value to test, but nothing seems to work. Could someone guide to understand why Terraform isn't applying the instance count as expected? Is there a better way to handle this with Azure Scale Sets in Terraform? For context: I'm using Hcl on Ubuntu. Is there a better approach? This is part of a larger web app I'm building. This is part of a larger CLI tool I'm building. The project is a REST API built with Hcl.