[T101] Terraform 101 Study 실습(4) - data resource

- data를 통해 az 조회 및 조회 데이터로 리소스 생성

 

- available 상태의 zones 조회

data "aws_availability_zones" "az_list" {
  state = "available"
}

output "aws_availability_zones" {
  value = data.aws_availability_zones.az_list
}

 

- ap-northeast-2a, ap-northeast-2c 두개 존에 ec2 배포

 

기본 서브넷 문제로 서브넷은 변수로 할당

provider "aws" {
  region = "ap-northeast-2"
}

data "aws_availability_zones" "az_list" {
  state = "available"
}

data "aws_ami" "ec2-ami" {
  most_recent = true
  filter {
    name = "owner-alias"
    values = ["amazon"]
  }

  filter {
    name = "name"
    values = [ "amzn2-ami-hvm-*-x86_64-ebs" ]
  }
}

variable "subnets" {
  default = ["subnet-0210e58904c6b4a91", "subnet-0ef1cd4143eb1d321"]
}

resource "aws_instance" "test-web-srv-1" {
  count = 2
  ami = data.aws_ami.ec2-ami.id
  instance_type = "t2.micro"
  subnet_id = count.index == 0 ? var.subnets[0] : var.subnets[1]
  availability_zone = element(data.aws_availability_zones.az_list.names, count.index * 2)

  tags = {
    Name = "test-web-${count.index}"
  }
}