EC2でWEBサーバーを構築し、さっと検証したいときのTerraform
作成するもの

iamRole
vpc
subnet
ec2
security group
AWS access_key secret_key ec2のkey_nameの設定を各環境ごとにおこなう。
設定

provider "aws" {
  access_key = "******"
  secret_key = "******"
  region     = "ap-northeast-2"
}

data "aws_availability_zones" "available" {}

resource "aws_vpc" "sample-test-vpc" {
  cidr_block           = "10.1.0.0/16"
  instance_tenancy     = "default"
  enable_dns_support   = "true"
  enable_dns_hostnames = "true"

  tags {
    Name = "sample-test-vpc"
  }
}

resource "aws_iam_instance_profile" "base_profile" {
  name  = "BaseIAMRoleProfile"
  roles = ["${aws_iam_role.base_role.name}"]
}

resource "aws_iam_role" "base_role" {
  name = "BaseIAMRole"

  assume_role_policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "",
      "Effect": "Allow",
      "Principal": {
        "Service": "ec2.amazonaws.com"
      },
      "Action": "sts:AssumeRole"
    }
  ]
}
EOF
}

resource "aws_iam_role_policy" "instance_role_policy" {
  name = "BaseIAMRolePolicy"
  role = "${aws_iam_role.base_role.id}"

  policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
{
      "Effect": "Allow",
      "Action": ["organizations:DescribeOrganization"],
      "Resource": "*"
    }
  ]
}
EOF
}

//subnet とりあえず１つ作る
resource "aws_subnet" "sample-test-subnet" {
  count                   = 1
  vpc_id                  = "${aws_vpc.sample-test-vpc.id}"
  cidr_block              = "10.1.${count.index}.0/24"
  availability_zone       = "${data.aws_availability_zones.available.names[count.index]}"
  map_public_ip_on_launch = true

  tags {
    Name = "sample-test-vpc.sample-test-subnet-${count.index}"
  }
}

resource "aws_internet_gateway" "sample-gw" {
  vpc_id = "${aws_vpc.sample-test-vpc.id}"

  tags {
    Name = "sample-gw"
  }
}

resource "aws_route_table" "sample-route-table" {
  vpc_id = "${aws_vpc.sample-test-vpc.id}"

  route {
    cidr_block = "0.0.0.0/0"
    gateway_id = "${aws_internet_gateway.sample-gw.id}"
  }
}

resource "aws_route_table_association" "sample-test-subnet-route-table-association" {
  count          = 2
  subnet_id      = "${element(aws_subnet.sample-test-subnet.*.id, count.index)}"
  route_table_id = "${aws_route_table.sample-route-table.id}"
}

data "aws_ami" "amazon_linux" {
  most_recent = true
  owners      = ["amazon"]

  filter {
    name   = "architecture"
    values = ["x86_64"]
  }

  filter {
    name   = "root-device-type"
    values = ["ebs"]
  }

  filter {
    name   = "name"
    values = ["amzn-ami-hvm-*"]
  }

  filter {
    name   = "virtualization-type"
    values = ["hvm"]
  }

  filter {
    name   = "block-device-mapping.volume-type"
    values = ["gp2"]
  }
}

// EC2インスタンス作成 
resource "aws_instance" "sample-ec2" {
  ami                         = "${data.aws_ami.amazon_linux.id}"
  instance_type               = "t2.micro"
  key_name                    = "your-keyname"
  associate_public_ip_address = true
  iam_instance_profile        = "${aws_iam_instance_profile.base_profile.name}"
  subnet_id                   = "${aws_subnet.sample-test-subnet.0.id}"
  vpc_security_group_ids      = ["${aws_security_group.sample-sec.id}"]

  tags {
    Name = "TEST"
  }
}

//セキュリティグループ　80 443 22 を許可 ip制限は各自で。　
resource "aws_security_group" "sample-sec" {
  name        = "sample-sec"
  description = "test-sg for tf test"

  vpc_id = "${aws_vpc.sample-test-vpc.id}"

  //アウトバウンド

  egress {
    from_port   = 0
    to_port     = 0
    protocol    = "-1"
    cidr_blocks = ["0.0.0.0/0"]
  }
  /*インバウンド*/
  ingress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }
  ingress {
    from_port   = 80
    to_port     = 80
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }
  ingress {
    from_port   = 443
    to_port     = 443
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }
}