main.tf

# Specify the provider and access details
provider "aws" {
  access_key = "your_access_key"
  secret_key = "your_secret_access_key"
  region = "${var.aws_region}"
}

resource "aws_instance" "master" {
  ami = "${var.ami}"
  instance_type = "${var.instance_type}"
  key_name = "${var.key_name}"
  user_data = "${file("${var.bootstrap_path}")}"
  vpc_security_group_ids = ["${aws_security_group.sgswarm.id}"]

  tags {
    Name  = "master"
  }
}

resource "aws_instance" "worker1" {
  ami = "${var.ami}"
  instance_type = "${var.instance_type}"
  key_name = "${var.key_name}"
  user_data = "${file("${var.bootstrap_path}")}"
  vpc_security_group_ids = ["${aws_security_group.sgswarm.id}"]

  tags {
    Name  = "worker 1"
  }
}

resource "aws_instance" "worker2" {
  ami = "${var.ami}"
  instance_type = "${var.instance_type}"
  key_name = "${var.key_name}"
  user_data = "${file("${var.bootstrap_path}")}"
  vpc_security_group_ids = ["${aws_security_group.sgswarm.id}"]

  tags {
    Name  = "worker 2"
  }
}