added output for asg

Author: brandonjbjelland

CHANGELOG.md

@@ -10,6 +10,7 @@ project adheres to [Semantic Versioning](http://semver.org/).
 ### Added
 
 - security group id can be provided for either/both of the cluster and the workers. If not provided, security groups will be created with sufficient rules to allow cluster-worker communication. - kudos to @tanmng on the idea ⭐
+- outputs of security group ids and worker ASG arns added for working with these resources outside the module.
 
 ### Changed
 

README.md

@@ -116,3 +116,4 @@ MIT Licensed. See [LICENSE](https://github.com/terraform-aws-modules/terraform-a
 | config_map_aws_auth | A kubernetes configuration to authenticate to this EKS cluster. |
 | kubeconfig | kubectl config file contents for this EKS cluster. |
 | worker_security_group_id | Security group ID attached to the EKS workers. |
+| workers_asg_arns | IDs of the autoscaling groups containing workers. |

outputs.tf

@@ -39,6 +39,11 @@ output "kubeconfig" {
   value       = "${data.template_file.kubeconfig.rendered}"
 }
 
+output "workers_asg_arns" {
+  description = "IDs of the autoscaling groups containing workers."
+  value       = "${aws_autoscaling_group.workers.*.arn}"
+}
+
 output "worker_security_group_id" {
   description = "Security group ID attached to the EKS workers."
   value       = "${local.worker_security_group_id}"

workers.tf

@@ -17,7 +17,7 @@ resource "aws_autoscaling_group" "workers" {
 }
 
 resource "aws_launch_configuration" "workers" {
-  name_prefix                 = "${var.cluster_name}-${lookup(var.worker_groups[count.index], "name", count.index)}-"
+  name                        = "${var.cluster_name}-${lookup(var.worker_groups[count.index], "name", count.index)}"
   associate_public_ip_address = true
   security_groups             = ["${local.worker_security_group_id}"]
   iam_instance_profile        = "${aws_iam_instance_profile.workers.id}"