有没有一种方法可以为选定的VPC（网络）生成非冲突ip范围，以用作terraform上的GKE主ipv4 cidr块？

Question

我想要一种在私有GKE集群创建时自动生成master_ipv4_cidr_block的值的方法。

• 此刻，我正在使用google_compute_global_address资源分配IP地址范围。但是我认为这不是此资源的正确用法，并且这种资源的引用只有5个元素。

resource "google_compute_global_address" "default" {
  provider      = "google-beta"
  project       = "${var.project}"
  name          = "${var.cluster_name}"
  description   = "Private address for the gke master instance of ${var.cluster_name}"
  purpose       = "VPC_PEERING"
  address_type  = "INTERNAL"
  prefix_length = 28
  network       = "${var.network}"
}

data "google_compute_zones" "available" {
  project = "${var.project}"
  region = "${var.region}"
  status = "UP"
}

/******************************************
  Cluster configuration
 *****************************************/
resource "google_container_cluster" "default" {
  project = "${var.project}"
  name = "${var.cluster_name}"
  zone = "${data.google_compute_zones.available.names[0]}"
  additional_zones = ["${data.google_compute_zones.available.names[1]}"]

  # We can't create a cluster with no node pool defined, but we want to only use
  # separately managed node pools. So we create the smallest possible default
  # node pool and immediately delete it.
  remove_default_node_pool = true
  initial_node_count = 1

  min_master_version = "1.11.6-gke.6"
  master_auth {...}
  ip_allocation_policy {..}

  private_cluster_config {
    enable_private_endpoint = "false"
    enable_private_nodes = "true"
    master_ipv4_cidr_block = "${google_compute_global_address.default.address}/${google_compute_global_address.default.prefix_length}"
  }

  network = "${var.network}"
  # https://github.com/terraform-providers/terraform-provider-google/issues/2231
  master_authorized_networks_config {...}
  maintenance_policy {...}
  logging_service = "logging.googleapis.com/kubernetes"
  monitoring_service = "monitoring.googleapis.com/kubernetes"
  resource_labels {...}
}

resource "google_container_node_pool" "default" {...}