Support attribute-based instance type selection

[Nuru]

Support attribute-based instance type selection when the AWS Terraform provider supports it.
See AWS announcement

[nitrocode]

Ticket to track hashicorp/terraform-provider-aws#21566

[jtdoepke]

Ticket to track hashicorp/terraform-provider-aws#21566

This has been closed/released in in AWS Provider v4.16.0

[nitrocode]

@jtdoepke cool, thanks for the heads up!

Looks like we can use the instance_requirements block on the launch template to make use of this feature.

https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/launch_template#instance-requirements

The aws_launch_template resource says if we use instance_requirements then we cannot use instance_type argument.

We do not use instance_type on the launch template but we do use instance_types on the aws_eks_node_group.

terraform-aws-eks-node-group/main.tf

Line 116 in 0d9d6a2

resource "aws_eks_node_group" "default" {

terraform-aws-eks-node-group/main.tf

Line 129 in 0d9d6a2

instance_types = local.ng.instance_types

[nitrocode]

@jtdoepke if you want to test this out, please take a look at the draft PR #120