Merge branch 'AZ-1355-auto-upgrade' into 'master'

AZ-1355: Add autoupgrade setting

Closes AZ-1355

See merge request claranet/projects/cloud/azure/terraform/modules/aks-light!13

README.md

@@ -277,6 +277,7 @@ module "aks" {
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
 | aci\_subnet\_id | ID of the Subnet for ACI virtual-nodes. | `string` | `null` | no |
+| aks\_automatic\_channel\_upgrade | The upgrade channel for this Kubernetes Cluster. Possible values are `patch`, `rapid`, `node-image` and `stable`. Setting this field to `null` sets this value to none. | `string` | `"patch"` | no |
 | aks\_http\_proxy\_settings | Azure Kubernetes Service HTTP proxy settings. URLs must be in format `http(s)://fqdn:port/`. When setting the `no_proxy_list` parameter, the AKS Private Endpoint domain name and the AKS VNet CIDR (or Subnet CIDRs) must be added to the list. | <pre>object({<br>    https_proxy_url = optional(string)<br>    http_proxy_url  = optional(string)<br>    trusted_ca      = optional(string)<br>    no_proxy_list   = optional(list(string), [])<br>  })</pre> | `null` | no |
 | aks\_network\_mode | Azure Kubernetes Service network mode to use. Only available with Azure CNI. | `string` | `null` | no |
 | aks\_network\_plugin | Azure Kubernetes Service network plugin to use. Possible names are `azure` and `kubenet`. Possible CNI modes are `None`, `Overlay` and `Cilium` for Azure CNI and `None` for Kubenet. Changing this forces a new resource to be created. | <pre>object({<br>    name     = optional(string, "azure")<br>    cni_mode = optional(string, "overlay")<br>  })</pre> | `{}` | no |

r-aks.tf

@@ -11,6 +11,7 @@ resource "azurerm_kubernetes_cluster" "aks" {
 
   # Cluster config
   kubernetes_version               = coalesce(var.kubernetes_version, data.azurerm_kubernetes_service_versions.versions.latest_version)
+  automatic_channel_upgrade        = var.aks_automatic_channel_upgrade
   sku_tier                         = var.aks_sku_tier
   node_resource_group              = local.aks_nodes_rg_name
   http_application_routing_enabled = var.http_application_routing_enabled

variables-aks-light.tf

@@ -346,3 +346,13 @@ variable "vnet_integration" {
     error_message = "var.vnet_integration.subnet_id must be set when VNet integration is enabled."
   }
 }
+
+variable "aks_automatic_channel_upgrade" {
+  description = "The upgrade channel for this Kubernetes Cluster. Possible values are `patch`, `rapid`, `node-image` and `stable`. Setting this field to `null` sets this value to none."
+  type        = string
+  default     = "patch"
+  validation {
+    condition     = try(contains(["patch", "rapid", "node-image", "stable"], var.aks_automatic_channel_upgrade), false) || var.aks_automatic_channel_upgrade == null
+    error_message = "The upgrade channel must be one of the following values: patch, rapid, node-image, stable or null."
+  }
+}