Getting terraform error: Error: "expected create_option to be one of [Attach Empty], got FromImage" - azure-cyclecloud

Question

I am trying to create azure cyclecloud server using terraform , my code is below
note: remove the actual disk id ,vm id, public key etc
resource "azurerm_virtual_machine_data_disk_attachment" "res-0" {
caching = "None"
create_option = "FromImage"
lun = 0
managed_disk_id = "Disk_id"
virtual_machine_id = "vm_id"
depends_on = [
azurerm_linux_virtual_machine.res-0,
]
}
resource "azurerm_linux_virtual_machine" "res-0" {
admin_username = "cyclecloud"
location = "westus2"
name = "cc3"
network_interface_ids = network_interfaces_id"
resource_group_name = "myrg"
size = "Standard_DS1_v2"
admin_ssh_key {
public_key = "my_public_key"
username = "cyclecloud"
}
boot_diagnostics {
}
os_disk {
caching = "ReadWrite"
storage_account_type = "Premium_LRS"
}
plan {
name = "cyclecloud-81"
product = "azure-cyclecloud"
publisher = "azurecyclecloud"
}
source_image_reference {
offer = "azure-cyclecloud"
publisher = "azurecyclecloud"
sku = "cyclecloud-81"
version = "latest"
}
}
while running :
terraform apply ,getting the below error:
Error: expected create_option to be one of [Attach Empty], got FromImage
with azurerm_virtual_machine_data_disk_attachment.res-0,
on main.tf line 3, in resource "azurerm_virtual_machine_data_disk_attachment" "res-0":
3: create_option = "FromImage"
Please assist
note i am using the below provider:
terraform {
backend "local" {}
required_providers {
azurerm = {
source = "hashicorp/azurerm"
version = "3.31.0"
}
}
}
provider "azurerm" {
features {}
}

Answer 1

The error clearly says that you are passing an unsupported value to the create_option attribute of resource azurerm_virtual_machine_data_disk_attachment. The possible values are Empty or Attach.
resource "azurerm_virtual_machine_data_disk_attachment" "res-0" {
caching = "None"
create_option = "Empty" ## or ## "Attach" # <- Choose any of these values.
lun = 0
managed_disk_id = "Disk_id"
virtual_machine_id = "vm_id"
depends_on = [
azurerm_linux_virtual_machine.res-0,
]
}
Refer to attribute description:
create_option - (Optional) The Create Option of the Data Disk, such as Empty or Attach. Defaults to Attach. Changing this forces a new resource to be created.
Official Documentation: https://registry.terraform.io/providers/hashicorp/azurerm/3.31.0/docs/resources/virtual_machine_data_disk_attachment#create_option
After this may be network_interface_ids = network_interfaces_id" this might result in an error if no real network_interface_ids are provided as the attribute values.
Refer to official hashicorp example : https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/linux_virtual_machine
Not Sure but if the goal is to attach an additional data disk to the machine then azurerm_managed_disk
resource is also required not only just attachment and there you can use create_option = FromImage attribute value.
create_option for the azurerm_managed_disk : https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/managed_disk#create_option