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使用Terraform模塊批量創(chuàng)建多臺ECS實例

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本文介紹如何使用Terraform模塊批量創(chuàng)建多臺ECS實例。

前提條件

在開始之前,請您確保完成以下操作:

操作步驟

  1. 創(chuàng)建專有網(wǎng)絡(luò)和交換機。

    1. 創(chuàng)建terraform.tf文件,輸入以下內(nèi)容,保存在當前的執(zhí)行目錄中。

      data "alicloud_zones" "default" {
        available_resource_creation = "VSwitch"
      }
      
      resource "alicloud_vpc" "vpc" {
        vpc_name   = "tf_test_foo"
        cidr_block = "172.16.0.0/12"
      }
      
      resource "alicloud_vswitch" "vsw" {
        vpc_id     = alicloud_vpc.vpc.id
        cidr_block = "172.16.0.0/21"
        zone_id    = data.alicloud_zones.default.zones[0].id
      }
    2. 運行terraform apply開始創(chuàng)建。

    3. 運行terraform show查看已創(chuàng)建的專有網(wǎng)絡(luò)和交換機。

      您也可以登錄VPC控制臺查看專有網(wǎng)絡(luò)和交換機的屬性。

  2. 在上一步創(chuàng)建的專有網(wǎng)絡(luò)中創(chuàng)建一個安全組,并添加一個允許任何地址訪問的安全組規(guī)則。

    1. terraform.tf文件中增加以下內(nèi)容。

      resource "alicloud_security_group" "default" {
        name   = "default"
        vpc_id = alicloud_vpc.vpc.id
      }
      
      resource "alicloud_security_group_rule" "allow_all_tcp" {
        type              = "ingress"
        ip_protocol       = "tcp"
        nic_type          = "intranet"
        policy            = "accept"
        port_range        = "1/65535"
        priority          = 1
        security_group_id = alicloud_security_group.default.id
        cidr_ip           = "0.0.0.0/0"
      }
    2. 運行terraform apply開始創(chuàng)建。

    3. 運行terraform show查看已創(chuàng)建的安全組和安全組規(guī)則。

      您也可以登錄ECS控制臺查看安全組和安全組規(guī)則。

  3. 使用Module創(chuàng)建多臺ECS實例。在本示例中,創(chuàng)建3臺ECS實例。

    重要
    • 在本教程中,通過module塊實現(xiàn)資源批量創(chuàng)建,Terraform使用Git作為module塊源代碼的獲取工具,所以需預先安裝Git。

    • alibaba/ecs-instance/alicloud模塊支持的Terraform版本需大于等于0.13.0。

    1. terraform.tf文件中增加以下內(nèi)容。

      data "alicloud_instance_types" "default" {
        availability_zone = data.alicloud_zones.default.zones[0].id
        cpu_core_count    = 1
        memory_size       = 2
      }
      
      data "alicloud_images" "default" {
        name_regex  = "^ubuntu_[0-9]+_[0-9]+_x64*"
        most_recent = true
        owners      = "system"
      }
      
      module "tf-instances" {
        source                      = "alibaba/ecs-instance/alicloud"
        region                      = "cn-beijing"
        number_of_instances         = 3
        vswitch_id                  = alicloud_vswitch.vsw.id
        group_ids                   = [alicloud_security_group.default.id]
        private_ips                 = ["172.16.0.10", "172.16.0.11", "172.16.0.12"]
        image_ids                   = [data.alicloud_images.default.images[0].id]
        instance_type               = data.alicloud_instance_types.default.instance_types[0].id
        internet_max_bandwidth_out  = 10
        associate_public_ip_address = true
        instance_name               = "my_module_instances_"
        host_name                   = "sample"
        internet_charge_type        = "PayByTraffic"
        password                    = "User@123"
        system_disk_category        = "cloud_ssd"
        data_disks = [
          {
            category = "cloud_ssd"
            name     = "my_module_disk"
            size     = "50"
          }
        ]
      }
      說明

      在上述示例中,同時指定associate_public_ip_address = trueinternet_max_bandwidth_out = 10,因此會自動為實例分配一個公網(wǎng)IP。詳細的參數(shù)解釋請參見 參數(shù)說明

    2. 運行terraform apply開始創(chuàng)建。

    3. 運行terraform show查看已創(chuàng)建的ECS實例。

    4. 運行ssh root@<publicip>,并輸入密碼來訪問ECS實例。

操作樣例

provider "alicloud" {
  region = "cn-beijing"
}

data "alicloud_zones" "default" {
  available_resource_creation = "VSwitch"
}

resource "alicloud_vpc" "vpc" {
  vpc_name   = "tf_test_foo"
  cidr_block = "172.16.0.0/12"
}

resource "alicloud_vswitch" "vsw" {
  vpc_id     = alicloud_vpc.vpc.id
  cidr_block = "172.16.0.0/21"
  zone_id    = data.alicloud_zones.default.zones[0].id
}

resource "alicloud_security_group" "default" {
  name   = "default"
  vpc_id = alicloud_vpc.vpc.id
}

resource "alicloud_security_group_rule" "allow_all_tcp" {
  type              = "ingress"
  ip_protocol       = "tcp"
  nic_type          = "intranet"
  policy            = "accept"
  port_range        = "1/65535"
  priority          = 1
  security_group_id = alicloud_security_group.default.id
  cidr_ip           = "0.0.0.0/0"
}

data "alicloud_instance_types" "default" {
  availability_zone = data.alicloud_zones.default.zones[0].id
  cpu_core_count    = 1
  memory_size       = 2
}

data "alicloud_images" "default" {
  name_regex  = "^ubuntu_[0-9]+_[0-9]+_x64*"
  most_recent = true
  owners      = "system"
}

module "tf-instances" {
  source                      = "alibaba/ecs-instance/alicloud"
  region                      = "cn-beijing"
  number_of_instances         = 3
  vswitch_id                  = alicloud_vswitch.vsw.id
  group_ids                   = [alicloud_security_group.default.id]
  private_ips                 = ["172.16.0.10", "172.16.0.11", "172.16.0.12"]
  image_ids                   = [data.alicloud_images.default.images[0].id]
  instance_type               = data.alicloud_instance_types.default.instance_types[0].id
  internet_max_bandwidth_out  = 10
  associate_public_ip_address = true
  instance_name               = "my_module_instances_"
  host_name                   = "sample"
  internet_charge_type        = "PayByTraffic"
  password                    = "User@123"
  system_disk_category        = "cloud_ssd"
  data_disks = [
    {
      category = "cloud_ssd"
      name     = "my_module_disk"
      size     = "50"
    }
  ]
}