I'm new to Terraform, I'm building Azure Infrastructure using Terraform.

Here's my main.tf file.

module "azResourceGroup" {
  source              = "./Modules/ResourceGroup"
  resource_group_name = var.resource_group_name
  tags                = var.tags
}

module "azStorageAccount" {
  source              = "./Modules/StorageAccount"
  resource_group_name = var.resource_group_name
  tags                = var.tags

  for_each                  = var.storage_account_list
  storage_account_name      = each.value.storage_account_name
  account_kind              = each.value.account_kind
  account_tier              = each.value.storage_account_tier
  enable_https_traffic_only = each.value.enable_https_traffic_only
}

This is the variable used for Storage Account (from variables.tf file) :

variable "storage_account_list" {
  type = list(object({
    storage_account_name      = string
    account_tier              = string
    account_kind              = string
    enable_https_traffic_only = bool
  }))
}

And below is the value for the variable (from terraform.tfvars file)

storage_account_list = [
  {
    storage_account_name      = "my-storage"
    account_tier              = "Standard"
    account_kind              = "BlobStorage"
    enable_https_traffic_only = false
  }
]

On the terraform plan command, I'm getting this below error. Please help me with this.

 Error: Invalid for_each argument
│
│   on main.tf line 13, in module "azStorageAccount":
│   13:   for_each                  = var.storage_account_list
│     ├────────────────
│     │ var.storage_account_list is list of object with 1 element
│
│ The given "for_each" argument value is unsuitable: the "for_each" argument must be a map, or set of strings, and you have
│ provided a value of type list of object.

CodePudding user response：

You can't use a list of objects in for_each. Only list of strings (no other type), or maps. So in your case you can change your list into map as follows:

module "azStorageAccount" {
  source              = "./Modules/StorageAccount"
  resource_group_name = var.resource_group_name
  tags                = var.tags

  for_each                  = {for idx, val in var.storage_account_list: idx => val}

  storage_account_name      = each.value.storage_account_name
  account_kind              = each.value.account_kind
  account_tier              = each.value.storage_account_tier
  enable_https_traffic_only = each.value.enable_https_traffic_only
}