Create an SLB instance in a VPC by using Terraform

Procedure

1. Create a VPC and a vSwitch. In this example, a VPC and a vSwitch are created in the China (Hangzhou) region.

   1. Create a file named terraform.tf, add the following content to the file, and then save the file in the current directory.

      variable "region" {
        default = "cn-hangzhou"
      }
      
      provider "alicloud" {
        region = var.region
      }
      
      data "alicloud_zones" "default" {
        available_resource_creation = "VSwitch"
      }
      
      resource "alicloud_vpc" "main" {
        vpc_name = "alicloud"
        # The CIDR block of the VPC
        cidr_block = "10.1.0.0/21"
      }
      
      resource "alicloud_vswitch" "main" {
        vpc_id = alicloud_vpc.main.id
        # The CIDR block of the vSwitch
        cidr_block = "10.1.0.0/24"
        # The zone
        zone_id = data.alicloud_zones.default.zones[0].id
      }

   2. Run terraform apply to create the resources.

   3. Run terraform show to view the created VPC and vSwitch.

2. Create an SLB instance and add a listener. In this example, a subscription SLB instance and a TCP listener are created.

   1. Add the following content to the terraform.tf file:

      resource "alicloud_slb_load_balancer" "instance" {
        load_balancer_name   = "slb_worder"
        load_balancer_spec   = "slb.s3.small"
        internet_charge_type = "PayByTraffic"
        address_type         = "intranet"
        vswitch_id           = alicloud_vswitch.main.id
      }
      
      resource "alicloud_slb_listener" "listener" {
        load_balancer_id = alicloud_slb_load_balancer.instance.id
        backend_port     = "2111"
        frontend_port    = "21"
        protocol         = "tcp"
        bandwidth        = "5"
      }

   2. Run terraform apply. The following output indicates that the resources have been successfully created.

      alicloud_slb_load_balancer.instance: Creating...
      alicloud_slb_load_balancer.instance: Still creating... [10s elapsed]
      alicloud_slb_load_balancer.instance: Creation complete after 10s [id=lb-bp13b3e2m9l8wjwh3y8px]
      alicloud_slb_listener.listener: Creating...
      alicloud_slb_listener.listener: Creation complete after 3s [id=lb-bp13b3e2m9l8wjwh3y8px:tcp:21]
      ......
      Apply complete! Resources: 2 added, 0 changed, 0 destroyed.

   3. Run terraform show to view the created SLB instance.