use prefix

Author: Jnig

autoscaling_master.tf

@@ -28,7 +28,7 @@ resource "aws_ebs_volume" "master" {
 }
 
 resource "aws_security_group" "master" {
-  name        = "${var.name}-master"
+  name_prefix        = "${var.name}-master"
   description = "${var.name}-master"
   vpc_id      = "${var.vpc}"
 

autoscaling_nodes.tf

@@ -21,7 +21,7 @@ data "template_file" "nodes" {
 }
 
 resource "aws_security_group" "nodes" {
-  name        = "${var.name}-nodes"
+  name_prefix        = "${var.name}-nodes"
   description = "${var.name}-nodes"
   vpc_id      = "${var.vpc}"
   tags = "${var.additional_tags}"

iam.tf

@@ -1,5 +1,5 @@
 resource "aws_iam_role" "cluster" {
-  name        = "${var.name}"
+  name_prefix        = "${var.name}"
   description = "Kubernetes cluster master and worker nodes"
   path        = "/"
 
@@ -21,7 +21,7 @@ EOF
 }
 
 resource "aws_iam_instance_profile" "cluster" {
-  name = "${var.name}"
+  name_prefix = "${var.name}"
   role = "${aws_iam_role.cluster.name}"
 }