Terraform_AWSでEC2を作成する

EVENT

EC2を作成していく

SOLUTION

前回の続き

EC2とは

AWSクラウド上の仮想サーバー

使用したリソース

• aws_security_group
  対象リソースに対しての出入り口設定を行う

フォルダ構成

• /main.tf

resource "aws_instance" "main" {
  ami = var.ami_id
  instance_type = var.instance_type
  subnet_id = var.subnet_id
  vpc_security_group_ids = [var.security_group_id]
  key_name = var.key_pair_name
  # パブリックサブネットに配置する場合
  associate_public_ip_address = var.associate_public_ip

  tags = {
    name = "${var.project_name}-${var.environment}-ec2-instance"
    environment = var.environment
  }
}

• /outputs.tf

output "instance_id" {
  description = "The ID of the EC2 instance."
  value       = aws_instance.main.id
}

output "private_ip" {
  description = "The private IP address of the EC2 instance."
  value       = aws_instance.main.private_ip
}

output "public_ip" {
  description = "The public IP address of the EC2 instance (if associated)."
  value       = aws_instance.main.public_ip
}

• /variables.tf

variable "project_name" {
  description = "Project name tag."
  type        = string
}

variable "environment" {
  description = "Deployment environment (e.g., dev, prd)."
  type        = string
}

variable "ami_id" {
  description = "The AMI ID for the EC2 instance."
  type        = string
}

variable "instance_type" {
  description = "The instance type for the EC2 instance."
  type        = string
}

variable "subnet_id" {
  description = "The ID of the subnet to launch the EC2 instance in."
  type        = string
}

variable "security_group_id" {
  description = "The ID of the security group to attach to the EC2 instance."
  type        = string
}

variable "key_pair_name" {
  description = "The name of the EC2 Key Pair."
  type        = string
}

variable "associate_public_ip" {
  description = "Whether to associate a public IP address with the instance."
  type        = bool
  default     = false
}

• ~/dev/main.tf

module "ec2" {
  source                    = "../../modules/ec2"
  project_name              = var.project_name
  environment               = "dev"
  ami_id                    = "ami-04158184f60ea8b5e"
  instance_type             = "t2.micro"
  subnet_id                 = module.vpc.public_subnet_ids[0] # パブリックサブネットに配置
  security_group_id         = module.security_group.ec2_security_group_id
  key_pair_name             = "test-keypair"
  associate_public_ip       = true # パブリックIPを割り当てる
}

• ~/dev/outputs.tf

output "ec2_public_ip" {
  value = module.ec2.public_ip
}

• 動作確認
  コンソール確認は省いて、EC2-RDSへの接続確認をしました。