{
  "KeyName": "${key_name}",
  "BlockDeviceMappings": [
    {
      "DeviceName": "/dev/sda1",
      "Ebs": {
        "DeleteOnTermination": true,
        "VolumeSize": 40,
        "VolumeType": "gp2"
      }
    },
    {
      "DeviceName": "/dev/sdf",
      "Ebs": {
        "DeleteOnTermination": true,
        "VolumeSize": 500,
        "VolumeType": "gp2"
      }
    }
  ],
  "ImageId": "${aws_ami}",
  "InstanceType": "m4.2xlarge",
  "NetworkInterfaces": [
    {
      "DeviceIndex": 0,
      "AssociatePublicIpAddress": "${associate_public_ip}",
      "Groups": [
        "${security_group_id}"
      ]
    }
  ],
  "EbsOptimized": true,
  "InstanceInitiatedShutdownBehavior": "${shutdown_behavior}"
}