README.md

To run this example, clone all files into their own directory, change directories into that directory, and run:

packer build -var-file="variables.pkrvars.hcl" .

If you modify the source_ami variable to be an empty string "", then the filter chosen will be different.

basic_aws.pkr.hcl

build {
    sources = [
        "source.amazon-ebs.first",
    ]

    provisioner "shell" {
        inline = [
            "sleep 5"
        ]
    }

    post-processor "shell-local" {
        inline = [
            "sleep 5"
        ]
    }
}

source "amazon-ebs" "first" {
    // omg comments

    ami_name = "hcl2-test"
    region = "us-east-1"
    instance_type = "t2.micro"
    force_deregister = true
    source_ami_filter {
        filters =  var.source_ami == "" ? var.filters : var.filters_source_ami
        most_recent = true
        owners = ["amazon"]
    }
    source_ami = var.source_ami
    launch_block_device_mappings {
        device_name = "/dev/xvda"
        volume_size = 20
        volume_type = "gp2"
        delete_on_termination = "true"
    }
    launch_block_device_mappings {
        device_name = "/dev/xvdf"
        volume_size = 500
        volume_type = "gp2"
        delete_on_termination = true
        encrypted = true
    }

    ami_regions = ["eu-central-1"]
    run_tags = {
        Name = "packer-something"
        stack-name = "DevOps Tools"
    }

    communicator = "ssh"
    ssh_pty = true
    ssh_username = "ec2-user"
    associate_public_ip_address = true
}

variables.pkr.hcl

variable "filters" {}

variable "filters_source_ami" {}

variable "source_ami" {}

variables.pkrvars.hcl

filters = {
    "virtualization-type" = "hvm"
    "name" =  "amzn-ami-hvm-????.??.?.????????-x86_64-gp2"
    "root-device-type" = "ebs"
    "tag:TemplateStatus" = "partytag"
}

filters_source_ami = {
    "virtualization-type" = "hvm"
    "name" =  "amzn-ami-hvm-????.??.?.????????-x86_64-gp2"
    "root-device-type" = "ebs"
}

source_ami = "ami-00eb20669e0990cb4"