packer + terraform example

example.json

{
  "variables": {
    "aws_access_key": "",
    "aws_secret_key": ""
  },
  "builders": [
    {
      "type": "amazon-ebs",
      "access_key": "{{user `aws_access_key`}}",
      "secret_key": "{{user `aws_secret_key`}}",
      "region": "us-east-1",
      "source_ami_filter": {
        "filters": {
          "virtualization-type": "hvm",
          "name": "ubuntu/images/*ubuntu-xenial-16.04-amd64-server-*",
          "root-device-type": "ebs"
        },
        "owners": ["099720109477"],
        "most_recent": true
      },
      "instance_type": "t2.micro",
      "ssh_username": "ubuntu",
      "ami_name": "packer-vault-example {{timestamp}}"
    }
  ],
  "provisioners": [
    {
      "type": "shell",
      "inline": [
        "git clone --branch master https://github.com/hashicorp/terraform-aws-vault.git /tmp/terraform-aws-vault",
        "/tmp/terraform-aws-vault/modules/install-vault/install-vault --version 0.10.4"
      ],
      "pause_before": "30s"
    }
  ]
}

how-to-use.md

$ terraform init

$ packer build -var "aws_access_key=<ACCESS KEY>" -var "aws_secret_key=<SECRET KEY>" example.json

$ terraform apply 

packer.tf

provider "aws" {
  access_key = "<ACCESS KEY>"
  secret_key = "<SECRET KEY>"
  region     = "us-east-1"
}

resource "aws_instance" "vault-example" {
  ami = "ami-0c118b2007f9340f1"
  instance_type = "t2.micro"
}