After$

assets/setup-web.sh

@@ -4,3 +4,5 @@ cp /tmp/assets/webapp /usr/local/bin/
 chmod +x /usr/local/bin/*
 cp /tmp/assets/webapp.service /lib/systemd/system/webapp.service
 service webapp start
+systemctl enable webapp
+

assets/webapp.service

@@ -1,8 +1,12 @@
+[Install]
+WantedBy=multi-user.target
+
 [Unit]
 Description=Demo web app
 
 [Service]
 ExecStart=/usr/local/bin/webapp >> /var/log/webapp.log
 IgnoreSIGPIPE=false
 KillMode=process
+Restart=on-failure
 

main.tf

@@ -1,9 +1,48 @@
+terraform {
+  required_version = ">= 0.11.0"
+}
+
+variable "access_key" {}
+variable "secret_key" {}
+variable "public_key" {}
+variable "private_key" {}
+
+variable "region" {
+  default = "us-east-1"
+}
+
+variable "ami" {}
+variable "subnet_id" {}
+variable "vpc_security_group_id" {}
+variable "identity" {}
+
+variable "num_webs" {
+  default = "1"
+}
+
 provider "aws" {
-  access_key = ""
-  secret_key = ""
-  region     = ""
+  version    = "~> 1.5"
+  access_key = "${var.access_key}"
+  secret_key = "${var.secret_key}"
+  region     = "${var.region}"
+}
+
+module "server" {
+  source = "./server"
+
+  num_webs              = "${var.num_webs}"
+  ami                   = "${var.ami}"
+  subnet_id             = "${var.subnet_id}"
+  vpc_security_group_id = "${var.vpc_security_group_id}"
+  identity              = "${var.identity}"
+  public_key            = "${var.public_key}"
+  private_key           = "${var.private_key}"
+}
+
+output "public_ip" {
+  value = "${module.server.public_ip}"
 }
 
-resource "aws_instance" "web" {
-  # ...
+output "public_dns" {
+  value = "${module.server.public_dns}"
 }

server/main.tf

@@ -0,0 +1,39 @@
+variable "ami" {}
+
+variable "num_webs" {}
+
+variable "subnet_id" {}
+variable "vpc_security_group_id" {}
+variable "identity" {}
+variable "public_key" {}
+variable "private_key" {}
+
+resource "aws_key_pair" "training" {
+  key_name   = "${var.identity}-key"
+  public_key = "${var.public_key}"
+}
+
+resource "aws_instance" "web" {
+  ami           = "${var.ami}"
+  instance_type = "t2.nano"
+  count         = "${var.num_webs}"
+
+  subnet_id              = "${var.subnet_id}"
+  vpc_security_group_ids = ["${var.vpc_security_group_id}"]
+
+  key_name = "${aws_key_pair.training.id}"
+
+  tags {
+    "Name"       = "web ${count.index+1}/${var.num_webs}"
+    "Identity"   = "${var.identity}"
+    "Created by" = "Terraform"
+  }
+}
+
+output "public_ip" {
+  value = ["${aws_instance.web.*.public_ip}"]
+}
+
+output "public_dns" {
+  value = ["${aws_instance.web.*.public_dns}"]
+}