Terraform: Issues Passing Variable References in Nested Modules for Azure Resource Deployment
I'm experiencing a question with passing variables to nested modules in Terraform when trying to deploy Azure resources. I have a root module that includes two sub-modules: one for setting up an Azure Storage Account and another for creating a corresponding Azure Blob Container. The scenario arises when I attempt to pass the storage account name from the first module to the second module as a variable. Here's a simplified version of my code: In my root module, I'm defining the storage account like this: ```hcl module "storage_account" { source = "./modules/storage" storage_account_name = "myuniquestorageacct" } ``` Then, in my `storage_account` module, I have: ```hcl resource "azurerm_storage_account" "example" { name = var.storage_account_name resource_group_name = azurerm_resource_group.example.name location = azurerm_resource_group.example.location account_tier = "Standard" account_replication_type = "LRS" } ``` And now in the `blob_container` module, I'm trying to pass this storage account name as follows: ```hcl module "blob_container" { source = "./modules/blob" storage_account_name = module.storage_account.storage_account_name } ``` However, I keep getting the following behavior when I apply my configuration: ``` behavior: Reference to undeclared input variable on modules/blob/main.tf line 5, in module "blob_container": 5: storage_account_name = module.storage_account.storage_account_name A variable named "storage_account_name" has not been declared. ``` I've double-checked that the output of my `storage_account` module is properly defined like this: ```hcl output "storage_account_name" { value = azurerm_storage_account.example.name } ``` I've confirmed that the output exists, but I suspect that I'm not correctly defining the variable in the `blob` module. I have it defined as: ```hcl variable "storage_account_name" { description = "The name of the Blob Storage Account" type = string } ``` I'm unsure why it's failing to recognize the variable reference. Any insights on what I'm missing or how to properly pass variables between nested modules in Terraform would be greatly appreciated. I'm using Terraform version `1.0.11` and have verified that my module paths are correct.