gistfile1.txt

variable "aws_access_key" {}
variable "aws_secret_key" {}
variable "aws_region" { default = "ap-northeast-1" }

variable "your_subnet_id" { default = "subnet-9a6da0c3" }
variable "your_vpc_id"    { default = "vpc-1c1fc479" }
variable "your_key_name"  { default = "foo" }

provider "aws" {
    access_key = "${var.aws_access_key}"
    secret_key = "${var.aws_secret_key}"
    region     = "${var.aws_region}"
}

resource "aws_security_group" "foo" {
    name = "foo"
    description = "foo"
    vpc_id = "${var.your_vpc_id}"
    ingress {
        from_port = 22
        to_port   = 22
        protocol  = "tcp"
        cidr_blocks = ["0.0.0.0/0"]
    }
}

resource "aws_instance" "foo" {
    ami = "ami-81294380"
    instance_type = "t1.micro"
    key_name = "${var.your_key_name}"
    subnet_id = "${var.your_subnet_id}"
    security_groups = ["${aws_security_group.foo.id}"]
    associate_public_ip_address = true
    root_block_device {
        volume_size = 20
    }
}