Support for creating nodepools from snapshots (#442)

* Support for creating nodepools from snapshots

Fixes #436

Author: zioproto

README.md

@@ -211,7 +211,7 @@ The following sections are generated by [terraform-docs](https://github.com/terr
 |---------------------------------------------------------------------------|------------------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.3           |
 | <a name="requirement_azapi"></a> [azapi](#requirement\_azapi)             | >= 1.4.0, < 2.0  |
-| <a name="requirement_azurerm"></a> [azurerm](#requirement\_azurerm)       | >= 3.51.0, < 4.0 |
+| <a name="requirement_azurerm"></a> [azurerm](#requirement\_azurerm)       | >= 3.69.0, < 4.0 |
 | <a name="requirement_null"></a> [null](#requirement\_null)                | >= 3.0           |
 | <a name="requirement_tls"></a> [tls](#requirement\_tls)                   | >= 3.1           |
 
@@ -220,7 +220,7 @@ The following sections are generated by [terraform-docs](https://github.com/terr
 | Name                                                          | Version          |
 |---------------------------------------------------------------|------------------|
 | <a name="provider_azapi"></a> [azapi](#provider\_azapi)       | >= 1.4.0, < 2.0  |
-| <a name="provider_azurerm"></a> [azurerm](#provider\_azurerm) | >= 3.51.0, < 4.0 |
+| <a name="provider_azurerm"></a> [azurerm](#provider\_azurerm) | >= 3.69.0, < 4.0 |
 | <a name="provider_null"></a> [null](#provider\_null)          | >= 3.0           |
 | <a name="provider_tls"></a> [tls](#provider\_tls)             | >= 3.1           |
 

main.tf

@@ -75,6 +75,7 @@ resource "azurerm_kubernetes_cluster" "main" {
       ultra_ssd_enabled            = var.ultra_ssd_enabled
       vnet_subnet_id               = var.vnet_subnet_id
       zones                        = var.agents_availability_zones
+      snapshot_id                  = var.snapshot_id
 
       dynamic "kubelet_config" {
         for_each = var.agents_pool_kubelet_configs
@@ -174,6 +175,7 @@ resource "azurerm_kubernetes_cluster" "main" {
       ultra_ssd_enabled            = var.ultra_ssd_enabled
       vnet_subnet_id               = var.vnet_subnet_id
       zones                        = var.agents_availability_zones
+      snapshot_id                  = var.snapshot_id
 
       dynamic "kubelet_config" {
         for_each = var.agents_pool_kubelet_configs
@@ -597,6 +599,7 @@ resource "azurerm_kubernetes_cluster_node_pool" "node_pool" {
   vnet_subnet_id    = each.value.vnet_subnet_id
   workload_runtime  = each.value.workload_runtime
   zones             = each.value.zones
+  snapshot_id       = each.value.snapshot_id
 
   dynamic "kubelet_config" {
     for_each = each.value.kubelet_config == null ? [] : ["kubelet_config"]

variables.tf

@@ -845,6 +845,7 @@ variable "node_pools" {
     proximity_placement_group_id = optional(string)
     spot_max_price               = optional(number)
     scale_down_mode              = optional(string, "Delete")
+    snapshot_id                  = optional(string)
     ultra_ssd_enabled            = optional(bool)
     vnet_subnet_id               = optional(string)
     upgrade_settings = optional(object({
@@ -942,6 +943,7 @@ variable "node_pools" {
     proximity_placement_group_id = (Optional) The ID of the Proximity Placement Group where the Virtual Machine Scale Set that powers this Node Pool will be placed. Changing this forces a new resource to be created. When setting `priority` to Spot - you must configure an `eviction_policy`, `spot_max_price` and add the applicable `node_labels` and `node_taints` [as per the Azure Documentation](https://docs.microsoft.com/azure/aks/spot-node-pool).
     spot_max_price               = (Optional) The maximum price you're willing to pay in USD per Virtual Machine. Valid values are `-1` (the current on-demand price for a Virtual Machine) or a positive value with up to five decimal places. Changing this forces a new resource to be created. This field can only be configured when `priority` is set to `Spot`.
     scale_down_mode              = (Optional) Specifies how the node pool should deal with scaled-down nodes. Allowed values are `Delete` and `Deallocate`. Defaults to `Delete`.
+    snapshot_id                  = (Optional) The ID of the Snapshot which should be used to create this Node Pool. Changing this forces a new resource to be created.
     ultra_ssd_enabled            = (Optional) Used to specify whether the UltraSSD is enabled in the Node Pool. Defaults to `false`. See [the documentation](https://docs.microsoft.com/azure/aks/use-ultra-disks) for more information. Changing this forces a new resource to be created.
     vnet_subnet_id               = (Optional) The ID of the Subnet where this Node Pool should exist. Changing this forces a new resource to be created. A route table must be configured on this Subnet.
     upgrade_settings = optional(object({
@@ -1138,6 +1140,12 @@ variable "sku_tier" {
   }
 }
 
+variable "snapshot_id" {
+  type        = string
+  default     = null
+  description = "(Optional) The ID of the Snapshot which should be used to create this default Node Pool. `temporary_name_for_rotation` must be specified when changing this property."
+}
+
 variable "storage_profile_blob_driver_enabled" {
   type        = bool
   default     = false

versions.tf

@@ -8,7 +8,7 @@ terraform {
     }
     azurerm = {
       source  = "hashicorp/azurerm"
-      version = ">= 3.51.0, < 4.0"
+      version = ">= 3.69.0, < 4.0"
     }
     null = {
       source  = "hashicorp/null"