feat: cloud dns support for safer clusters (terraform-google-modules#1384)

Author: feliperfmarques

autogen/safer-cluster/main.tf.tmpl

@@ -141,6 +141,12 @@ module "gke" {
 
   dns_cache = var.dns_cache
 
+  cluster_dns_provider = var.cluster_dns_provider
+
+  cluster_dns_scope = var.cluster_dns_scope
+
+  cluster_dns_domain = var.cluster_dns_domain
+
   config_connector = var.config_connector
 
   default_max_pods_per_node = var.default_max_pods_per_node

autogen/safer-cluster/variables.tf.tmpl

@@ -273,6 +273,24 @@ variable "dns_cache" {
   default     = false
 }
 
+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 "default_max_pods_per_node" {
   description = "The maximum number of pods to schedule per node"
   default     = 110

modules/safer-cluster-update-variant/README.md

@@ -204,6 +204,9 @@ For simplicity, we suggest using `roles/container.admin` and
 | add\_cluster\_firewall\_rules | Create additional firewall rules | `bool` | `false` | no |
 | authenticator\_security\_group | The name of the RBAC security group for use with Google security groups in Kubernetes RBAC. Group name must be in format [email protected] | `string` | `null` | no |
 | cloudrun | (Beta) Enable CloudRun addon | `bool` | `false` | no |
+| cluster\_dns\_domain | The suffix used for all cluster service records. | `string` | `""` | no |
+| cluster\_dns\_provider | Which in-cluster DNS provider should be used. PROVIDER\_UNSPECIFIED (default) or PLATFORM\_DEFAULT or CLOUD\_DNS. | `string` | `"PROVIDER_UNSPECIFIED"` | no |
+| cluster\_dns\_scope | The scope of access to cluster DNS records. DNS\_SCOPE\_UNSPECIFIED (default) or CLUSTER\_SCOPE or VPC\_SCOPE. | `string` | `"DNS_SCOPE_UNSPECIFIED"` | no |
 | cluster\_resource\_labels | The GCE resource labels (a map of key/value pairs) to be applied to the cluster | `map(string)` | `{}` | no |
 | compute\_engine\_service\_account | Use the given service account for nodes rather than creating a new dedicated service account. | `string` | `""` | no |
 | config\_connector | (Beta) Whether ConfigConnector is enabled for this cluster. | `bool` | `false` | no |

modules/safer-cluster-update-variant/main.tf

@@ -137,6 +137,12 @@ module "gke" {
 
   dns_cache = var.dns_cache
 
+  cluster_dns_provider = var.cluster_dns_provider
+
+  cluster_dns_scope = var.cluster_dns_scope
+
+  cluster_dns_domain = var.cluster_dns_domain
+
   config_connector = var.config_connector
 
   default_max_pods_per_node = var.default_max_pods_per_node

modules/safer-cluster-update-variant/variables.tf

@@ -273,6 +273,24 @@ variable "dns_cache" {
   default     = false
 }
 
+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 "default_max_pods_per_node" {
   description = "The maximum number of pods to schedule per node"
   default     = 110

modules/safer-cluster/README.md

@@ -204,6 +204,9 @@ For simplicity, we suggest using `roles/container.admin` and
 | add\_cluster\_firewall\_rules | Create additional firewall rules | `bool` | `false` | no |
 | authenticator\_security\_group | The name of the RBAC security group for use with Google security groups in Kubernetes RBAC. Group name must be in format [email protected] | `string` | `null` | no |
 | cloudrun | (Beta) Enable CloudRun addon | `bool` | `false` | no |
+| cluster\_dns\_domain | The suffix used for all cluster service records. | `string` | `""` | no |
+| cluster\_dns\_provider | Which in-cluster DNS provider should be used. PROVIDER\_UNSPECIFIED (default) or PLATFORM\_DEFAULT or CLOUD\_DNS. | `string` | `"PROVIDER_UNSPECIFIED"` | no |
+| cluster\_dns\_scope | The scope of access to cluster DNS records. DNS\_SCOPE\_UNSPECIFIED (default) or CLUSTER\_SCOPE or VPC\_SCOPE. | `string` | `"DNS_SCOPE_UNSPECIFIED"` | no |
 | cluster\_resource\_labels | The GCE resource labels (a map of key/value pairs) to be applied to the cluster | `map(string)` | `{}` | no |
 | compute\_engine\_service\_account | Use the given service account for nodes rather than creating a new dedicated service account. | `string` | `""` | no |
 | config\_connector | (Beta) Whether ConfigConnector is enabled for this cluster. | `bool` | `false` | no |

modules/safer-cluster/main.tf

@@ -137,6 +137,12 @@ module "gke" {
 
   dns_cache = var.dns_cache
 
+  cluster_dns_provider = var.cluster_dns_provider
+
+  cluster_dns_scope = var.cluster_dns_scope
+
+  cluster_dns_domain = var.cluster_dns_domain
+
   config_connector = var.config_connector
 
   default_max_pods_per_node = var.default_max_pods_per_node

modules/safer-cluster/variables.tf

@@ -273,6 +273,24 @@ variable "dns_cache" {
   default     = false
 }
 
+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 "default_max_pods_per_node" {
   description = "The maximum number of pods to schedule per node"
   default     = 110