操作步驟

1. 創建專有網絡和交換機。

   說明

   當前示例代碼支持一鍵運行，您可以直接運行代碼。一鍵運行

   1. 創建terraform.tf文件 ，定義專有網絡和交換機資源，文件內容如下。

      provider "alicloud" {
        configuration_source = "terraform-provider-alicloud/examples/vpc"
      }
      
      resource "alicloud_vpc" "main" {
        # VPC名稱
        vpc_name = "alicloud"
        # VPC地址塊
        cidr_block = "10.1.0.0/21"
      }
      
      resource "alicloud_vswitch" "main" {
        # VPC ID
        vpc_id            = alicloud_vpc.main.id
        # 交換機地址塊
        cidr_block        = "10.1.0.0/24"
        # 可用區
        zone_id = "cn-hangzhou-b"
        # 資源依賴,會優先創建該依賴資源
        depends_on = [alicloud_vpc.main]
      }

   2. 運行terraform apply開始創建。出現類似下面的日志，說明創建成功。

      alicloud_vpc.main: Creating...
      ......
      Apply complete! Resources: 2 added, 0 changed, 0 destroyed

   3. 運行terraform show查看已創建的專有和專有網絡。

2. 創建NAT網關并配置Snat和Dnat條目。

   1. 在terraform.tf文件中增加以下內容：

      variable "name" {
        default = "natGatewayExampleName"
      }
      
      resource "alicloud_vpc" "enhanced" {
        vpc_name   = var.name
        cidr_block = "10.0.0.0/8"
      }
      
      data "alicloud_enhanced_nat_available_zones" "enhanced"{}
      
      resource "alicloud_vswitch" "enhanced" {
        vswitch_name      = var.name
        zone_id           = data.alicloud_enhanced_nat_available_zones.enhanced.zones.0.zone_id
        cidr_block        = "10.10.0.0/20"
        vpc_id            = alicloud_vpc.enhanced.id
      }
      
      resource "alicloud_nat_gateway" "main" {
        vpc_id               = alicloud_vpc.enhanced.id
        nat_gateway_name     = var.name
        payment_type         = "PayAsYouGo"
        vswitch_id           = alicloud_vswitch.enhanced.id
        nat_type             = "Enhanced"
      }
      
      resource "alicloud_eip_address" "foo" {
        address_name = var.name
      }
      
      resource "alicloud_eip_association" "foo" {
        allocation_id = alicloud_eip_address.foo.id
        instance_id   = alicloud_nat_gateway.main.id
      }
      
      # adding dnat entry
      resource "alicloud_forward_entry" "default" {
        forward_table_id = alicloud_nat_gateway.main.forward_table_ids
        external_ip      = alicloud_eip_address.foo.ip_address
        external_port    = "80"
        ip_protocol      = "tcp"
        internal_ip      = "172.16.0.3"
        internal_port    = "8080"
      }
      
      # adding snat entry
      resource "alicloud_snat_entry" "default" {
        depends_on        = [alicloud_eip_association.foo]
        snat_table_id     = alicloud_nat_gateway.main.snat_table_ids
        source_vswitch_id = alicloud_vswitch.enhanced.id
        snat_ip           = join(",", alicloud_eip_address.foo.*.ip_address)
      }
      

   2. 運行terraform apply開始創建。出現下面的日志，說明創建成功。

      alicloud_vpc.enhanced: Creating...
      alicloud_eip_address.foo: Creating...
      ......
      Apply complete! Resources: 7 added, 0 changed, 0 destroyed.
                              

   3. 運行terraform show查看已經創建的NAT網關。