tf_aws_coreos_ami

Starting from Terraform version 0.7 this module is redundant, because Terraform has aws_ami data-structure which allows to get ID of specific CoreOS AMI.

Here is the code:

variable "channel" {
  default = "stable"
}

variable "virtualization_type" {
  default = "hvm"
}

data "aws_ami" "coreos" {
  most_recent = true

  owners = ["595879546273"]

  filter {
    name   = "architecture"
    values = ["x86_64"]
  }

  filter {
    name = "virtualization-type"
    values = ["${var.virtualization_type}"]
  }

  filter {
    name   = "name"
    values = ["CoreOS-${var.channel}-*"]
  }
}

output "ami_id" {
  value = "${data.aws_ami.coreos.image_id}"
}

---

If you are using Terraform older than version 0.7 keep reading and using this module.

Terraform module to get the current set of publicly available CoreOS AMIs.

This module grabs all of the AMIs listed at:

https://coreos.com/docs/running-coreos/cloud-providers/ec2/

and then looks up the one you want given the input variables.

Input variables

• region - E.g. eu-central-1
• channel - stable/alpha/beta
• virttype - hvm/pv

Outputs

• ami_id

Example use

module "ami" {
  source = "github.com/terraform-community-modules/tf_aws_coreos_ami"
  region = "eu-central-1"
  channel = "stable"
  virttype = "hvm"
}

resource "aws_instance" "core" {
  instances = 5
  ami = "${module.ami.ami_id}"
  instance_type = "m3.8xlarge"
}

Note

This module has bundled version of variables.tf.json, but if you need to update it you can run make in this directory to pull that file down.

You can do this with a few lines like this in your top level Makefile:

.terraform/modules:
        terraform get
        for i in $$(ls .terraform/modules/*/Makefile); do i=$$(dirname $$i); make -C $$i; done

Consider open a pull-request with updated variables.tf.json.

Getting an AMI by instance_type

Often you don't want to care if you need an hvm or pv instance.

In these cases, you can instead use:

module "ami" {
  source = "github.com/terraform-community-modules/tf_aws_coreos_ami/instance_type"
  region = "eu-central-1"
  channel = "stable"
  instance_type = "m3.large"
}

Note this prefers hvm instances where available.

LICENSE

Apache2 - See the included LICENSE file for more information.