Terraform scenarios to create Azure Kubernetes Service with custom VNET configuration causing IP allocation issues
Quick question that's been bugging me - I'm writing unit tests and I've been banging my head against this for hours. I've looked through the documentation and I'm still confused about Hey everyone, I'm running into an issue that's driving me crazy... I'm trying to provision an Azure Kubernetes Service (AKS) cluster using Terraform, but I'm running into an scenario where the cluster is unable to allocate IP addresses correctly when I specify a custom VNET. I've followed the official documentation and set up my Terraform configuration as follows: ```hcl provider "azurerm" { features {} } resource "azurerm_resource_group" "example" { name = "example-resources" location = "East US" } resource "azurerm_virtual_network" "example" { name = "example-vnet" address_space = ["10.0.0.0/16"] location = azurerm_resource_group.example.location resource_group_name = azurerm_resource_group.example.name } resource "azurerm_subnet" "example" { name = "example-subnet" resource_group_name = azurerm_resource_group.example.name virtual_network_name = azurerm_virtual_network.example.name address_prefixes = ["10.0.1.0/24"] } resource "azurerm_kubernetes_cluster" "example" { name = "example-aks" location = azurerm_resource_group.example.location resource_group_name = azurerm_resource_group.example.name dns_prefix = "exampleaks" agent_pool_profile { name = "default" count = 3 vm_size = "Standard_DS2_v2" os_type = "Linux" vnet_subnet_id = azurerm_subnet.example.id } identity { type = "SystemAssigned" } } ``` When I run `terraform apply`, I get the following behavior: ``` behavior: Failed to allocate IP address for the agent pool. Please make sure that the specified subnet has enough address space available. ``` I've double-checked the address space of the VNET and the subnet, and it seems like there should be enough available IPs. I also ensured that the subnet is delegated to AKS, as per the Azure documentation. However, it still fails during the provisioning step. I tried using the default VNET settings as well and everything works fine, but I need this custom configuration for my network architecture. Any insights on this? Is there a specific best practice I'm missing or a configuration that needs adjustment? This is part of a larger web app I'm building. What's the best practice here? For context: I'm using Hcl on Ubuntu. Am I missing something obvious? I've been using Hcl for about a year now. This is happening in both development and production on Debian. For context: I'm using Hcl on Linux. Hoping someone can shed some light on this.