Add vars to be able to configure cloud DNS

Author: mitch-hamm

main.tf

@@ -191,6 +191,9 @@ module "gke" {
   database_encryption               = local.database_encryption
   deletion_protection               = var.deletion_protection
   enable_l4_ilb_subsetting          = var.enable_l4_ilb_subsetting
+  cluster_dns_provider              = var.cluster_dns_provider
+  cluster_dns_scope                 = var.cluster_dns_scope
+  cluster_dns_domain                = var.cluster_dns_domain
 }
 
 module "gke_private" {

variables.tf

@@ -62,6 +62,24 @@ variable "cluster_autoscaling_config" {
   })
 }
 
+variable "cluster_dns_provider" {
+  type        = string
+  description = "Which in-cluster DNS provider should be used. PROVIDER_UNSPECIFIED (default) or PLATFORM_DEFAULT or CLOUD_DNS."
+  default     = "PROVIDER_UNSPECIFIED"
+}
+
+variable "cluster_dns_scope" {
+  type        = string
+  description = "The scope of access to cluster DNS records. DNS_SCOPE_UNSPECIFIED (default) or CLUSTER_SCOPE or VPC_SCOPE. "
+  default     = "DNS_SCOPE_UNSPECIFIED"
+}
+
+variable "cluster_dns_domain" {
+  type        = string
+  description = "The suffix used for all cluster service records."
+  default     = ""
+}
+
 variable "cluster_http_load_balancing" {
   default     = true
   description = "Enable the HTTP load balancing addon for the cluster. Defaults to \"true\""