what is the 'availability_zone' argument in terraform for azure? - terraform-provider-azure

Question

I'm trying to create a Virtual network in Azure with a NAT gateway, using terraform.
I'm getting the following warning when I run terraform plan :
Warning: Argument is deprecated
│
│ with azurerm_public_ip.example2,
│ on PublicIPandNAT.tf line 16, in resource "azurerm_public_ip" "example2":
│ 16: zones = ["1"]
│
│ This property has been deprecated in favour of `availability_zone` due to a breaking behavioural change in Azure:
│ https://azure.microsoft.com/en-us/updates/zone-behavior-change/
│
│ (and one more similar warning elsewhere)
╵
Do you want to perform these actions?
But in the azurerm provider documentation on registry.terraform.io, there is no reference to a availability_zone argument in the azurerm_public_ip resource.
Is the terraform documentation out of date? what is the syntax of the availability_zone argument? and what is the risk of using the zones argument?

Answer 1

Trying to create a Virtual network in Azure with a NAT gateway, using
terraform.
To create Virtual network with NAT Gateway using terraform, we have tried at our end with following code and it works fine without any error.
You can use the below code to do the same by adding your required name :-
main.tf:-
provider "azurerm" {
features {}
}
resource "azurerm_resource_group" "example" {
name = "nat-gateway-example-rg"
location = "West Europe"
}
resource "azurerm_public_ip" "example" {
name = "nat-gateway-publicIP"
location = azurerm_resource_group.example.location
resource_group_name = azurerm_resource_group.example.name
allocation_method = "Static"
sku = "Standard"
zones = ["1"]
}
resource "azurerm_virtual_network" "example" {
name = "example-network"
location = azurerm_resource_group.example.location
resource_group_name = azurerm_resource_group.example.name
address_space = ["10.0.0.0/16"]
dns_servers = ["10.0.0.4", "10.0.0.5"]
}
resource "azurerm_public_ip_prefix" "example" {
name = "nat-gateway-publicIPPrefix"
location = azurerm_resource_group.example.location
resource_group_name = azurerm_resource_group.example.name
prefix_length = 30
zones = ["1"]
}
resource "azurerm_nat_gateway" "example" {
name = "nat-Gateway"
location = azurerm_resource_group.example.location
resource_group_name = azurerm_resource_group.example.name
sku_name = "Standard"
idle_timeout_in_minutes = 10
zones = ["1"]
}
OUTPUT DETAILS:-
My terraform version :-
what is the syntax of the availability_zone argument? and what is the
risk of using the zones argument?
AFAIK, there is no risk of use availability zone and you can find the reference in aforementioned code .
For more information please refer this HashiCorp| azurerm_nat_gateway