aks autoscaling configured

src/core/aks.tf

@@ -15,10 +15,14 @@ module "aks" {
   kubernetes_version         = var.kubernetes_version
   log_analytics_workspace_id = azurerm_log_analytics_workspace.log_analytics_workspace.id
 
-  vm_size    = var.aks_vm_size
-  node_count = var.aks_node_count
-  sku_tier   = var.aks_sku_tier
-  max_pods   = var.aks_max_pods
+  vm_size                    = var.aks_vm_size
+  enable_auto_scaling        = var.aks_enable_auto_scaling
+  node_count                 = var.aks_node_count
+  min_count                  = var.min_count
+  max_count                  = var.max_count
+  max_pods                   = var.aks_max_pods
+  upgrade_settings_max_surge = var.upgrade_settings_max_surge
+  sku_tier                   = var.aks_sku_tier
 
   private_cluster_enabled = true
 

src/core/env/dev/terraform.tfvars

@@ -44,8 +44,11 @@ app_gateway_api_certificate_name = "api-dev-selfcare-pagopa-it"
 # aks
 aks_alerts_enabled = false
 # This is the k8s ingress controller ip. It must be in the aks subnet range.
-reverse_proxy_ip = "10.1.0.250"
-aks_max_pods     = 100
+reverse_proxy_ip        = "10.1.0.250"
+aks_max_pods            = 100
+aks_enable_auto_scaling = false
+min_count               = null
+max_count               = null
 
 # CosmosDb MongoDb
 cosmosdb_mongodb_enable_serverless             = true

src/core/env/prod/terraform.tfvars

@@ -51,8 +51,12 @@ app_gateway_max_capacity         = 2
 # This is the k8s ingress controller ip. It must be in the aks subnet range.
 reverse_proxy_ip = "10.1.0.250"
 # aks_availability_zones = [1, 2, 3]         # TODO to define and uncomment before release to prod
-aks_node_count = 1 # TODO to define before release to prod
-aks_max_pods   = 100
+aks_node_count             = 1 # TODO to define before release to prod
+aks_max_pods               = 100
+aks_enable_auto_scaling    = true
+min_count                  = 1 # TODO to define before release to prod
+max_count                  = 1 # TODO to define before release to prod
+upgrade_settings_max_surge = "33%"
 # aks_vm_size            = "Standard_D8S_v3" # TODO to define and uncomment before release to prod
 # aks_sku_tier           = "Paid"            # TODO to define and uncomment before release to prod
 

src/core/env/uat/terraform.tfvars

@@ -45,8 +45,11 @@ app_gateway_api_certificate_name = "api-uat-selfcare-pagopa-it"
 # aks
 aks_alerts_enabled = false
 # This is the k8s ingress controller ip. It must be in the aks subnet range.
-reverse_proxy_ip = "10.1.0.250"
-aks_max_pods     = 100
+reverse_proxy_ip        = "10.1.0.250"
+aks_max_pods            = 100
+aks_enable_auto_scaling = false
+min_count               = null
+max_count               = null
 
 # CosmosDb MongoDb
 cosmosdb_mongodb_enable_serverless = true

src/core/variables.tf

@@ -89,6 +89,30 @@ variable "aks_max_pods" {
   default     = 100
 }
 
+variable "aks_enable_auto_scaling" {
+  type        = bool
+  description = "Should the Kubernetes Auto Scaler be enabled for this Node Pool? "
+  default     = false
+}
+
+variable "min_count" {
+  type        = number
+  description = "The minimum number of nodes which should exist in this Node Pool. If specified this must be between 1 and 1000"
+  default     = null
+}
+
+variable "max_count" {
+  type        = number
+  description = "The maximum number of nodes which should exist in this Node Pool. If specified this must be between 1 and 1000"
+  default     = null
+}
+
+variable "upgrade_settings_max_surge" {
+  type        = string
+  description = "The maximum number or percentage of nodes which will be added to the Node Pool size during an upgrade."
+  default     = "33%"
+}
+
 variable "kubernetes_version" {
   type    = string
   default = "1.21.2"