main.tf

# A simple config file

## Provider & Terraform backend
provider "aws" {
  region                  = "${var.aws_region}"
  shared_credentials_file = "${var.aws_credentials_file}"
  profile                 = "${var.aws_profile}"
}

terraform {
  backend "s3" {}
}

## One database and one naked EC2 instance

module "networking" {
  source = "./modules/networking"

  vpc_cidr                = "${var.vpc_cidr}"
  vpc_public_subnet_cidr  = "${var.vpc_public_subnet_cidr}"
  vpc_private_subnet_cidr = "${var.vpc_private_subnet_cidr}"
  vpc_public_subnet_az    = "${var.vpc_public_subnet_az}"
  vpc_private_subnet_az   = "${var.vpc_private_subnet_az}"
}

module "database" {
  source = "./modules/database"

  db_username = "${var.db_username}"
  db_password = "${var.db_password}"

  #vpc_security_group_ids = []
  db_subnet_ids = [
    "${module.networking.vpc_public_subnet_id}",
    "${module.networking.vpc_private_subnet_id}",
  ]
}

module "compute" {
  source = "./modules/ec2-blank"

  web_ami = "${data.aws_ami.ubuntu.id}"

  web_subnet_id = "${module.networking.vpc_public_subnet_id}"

  web_vpc_security_group_ids = [
    "${module.networking.vpc_sg_ssh_access}",
    "${module.networking.vpc_sg_web_access}",
  ]

  web_key_name = "${aws_key_pair.demo-key.key_name}"

  web_user_data = "${data.template_file.user_data.rendered}"
}

resource "aws_key_pair" "demo-key" {
  key_name   = "demo-key"
  public_key = "${file("${var.ssh_public}")}"
}

data "template_file" "user_data" {
  template = "${file("${path.module}/user-data/user-data.sh")}"
}

# AMI IDs

data "aws_ami" "ubuntu" {
  most_recent = true
  owners      = ["099720109477"]

  filter {
    name   = "name"
    values = ["ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-amd64-server-*"]
  }

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

data "aws_ami" "ecs" {
  most_recent = true
  owners      = ["591542846629"] # AWS

  filter {
    name   = "name"
    values = ["*amazon-ecs-optimized"]
  }

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