packer.json

{
  "variables": {
    "aws_access_key_id": "",
    "aws_secret_key": "",
    "s3_bucket": "",
    "grub_passwd": ""
  },
  "builders": [
    {
      "type": "amazon-ebs",
      "access_key": "{{user `aws_access_key_id`}}",
      "secret_key": "{{user `aws_secret_key`}}",
      "region": "us-east-1",
      "source_ami": "ami-9eaa1cf6",
      "instance_type": "m3.medium",
      "ssh_username": "ubuntu",
      "ami_name": "FISMA Ready Baseline Ubuntu ({{timestamp}} - Packer)",
      "ami_description": "A FISMA-ready baseline Ubuntu image. Based on Canoncical Ubuntu Trusty 14.04 LTS (ami-9eaa1cf6). For more info: https://github.com/fisma-ready/ubuntu-lts",
      "ami_block_device_mappings": [
        {
          "device_name": "/dev/sda1",
          "volume_type": "gp2",
          "volume_size": 30,
          "delete_on_termination": true
        },
        {
          "device_name": "/dev/sdk",
          "volume_size": 40,
          "volume_type": "gp2",
          "delete_on_termination": true
        }
        ],
      "launch_block_device_mappings": [
        {
          "device_name": "/dev/sda1",
          "volume_type": "gp2",
          "volume_size": 30,
          "delete_on_termination": true
        },
        {
          "device_name": "/dev/sdk",
          "volume_size": 40,
          "volume_type": "gp2",
          "delete_on_termination": true
        }
      ]
    }
  ],
  "provisioners": [
    {
      "type": "chef-solo",
      "cookbook_paths": [
        "../vendor/cookbooks"
      ],
      "run_list": [
        "packer::default"
      ],
      "json": {
        "grub_passwd": "hello"
       }
      },
      {
      "inline": [
        "truncate -s0 /home/ubuntu/.ssh/authorized_keys"
      ],
      "type": "shell"
    }
  ]
}