Fix limiting behavior of workers_ingress_cluster security group

* New variable `worker_sg_ingress_from_port` allows to change the minimum port number from which pods will accept communication
* See https://github.com/terraform-aws-modules/terraform-aws-eks/issues/27

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this
 project adheres to [Semantic Versioning](http://semver.org/).
 
+## [[v1.0.1](https://github.com/terraform-aws-modules/terraform-aws-eks/compare/v1.0.0...v1.0.1)] - 2018-06-23]
+
+### Added
+
+- new variable `worker_sg_ingress_from_port` allows to change the minimum port number from which pods will accept communication
+
 ## [[v1.0.0](https://github.com/terraform-aws-modules/terraform-aws-eks/compare/v0.2.0...v1.0.0)] - 2018-06-11]
 
 ### Added

README.md

@@ -104,6 +104,7 @@ MIT Licensed. See [LICENSE](https://github.com/terraform-aws-modules/terraform-a
 | vpc_id                    | VPC where the cluster and workers will be deployed.                                                                                                                                                                      | string |    -     |   yes    |
 | worker_groups             | A list of maps defining worker group configurations. See workers_group_defaults for valid keys.                                                                                                                          |  list  | `<list>` |    no    |
 | worker_security_group_id  | If provided, all workers will be attached to this security group. If not given, a security group will be created with necessary ingres/egress to work with the EKS cluster.                                              | string | `` | no  |
+| worker_sg_ingress_from_port    | Minimum port number from which pods will accept communication. Must be changed to a lower value if some pods in your cluster will expose a port lower than 1025 (e.g. 22, 80, or 443).                                                                                                                                                         |  string   | `1025`  |    no    |
 | workers_group_defaults    | Default values for target groups as defined by the list of maps.                                                                                                                                                         |  map   | `<map>`  |    no    |
 
 ## Outputs

variables.tf

@@ -67,3 +67,8 @@ variable "worker_security_group_id" {
   description = "If provided, all workers will be attached to this security group. If not given, a security group will be created with necessary ingres/egress to work with the EKS cluster."
   default     = ""
 }
+
+variable "worker_sg_ingress_from_port" {
+  description = "Minimum port number from which pods will accept communication. Must be changed to a lower value if some pods in your cluster will expose a port lower than 1025 (e.g. 22, 80, or 443)."
+  default     = "1025"
+}

version

@@ -1 +1 @@
-v1.0.0
+v1.0.1

workers.tf

@@ -73,7 +73,7 @@ resource "aws_security_group_rule" "workers_ingress_cluster" {
   protocol                 = "tcp"
   security_group_id        = "${aws_security_group.workers.id}"
   source_security_group_id = "${local.cluster_security_group_id}"
-  from_port                = 1025
+  from_port                = "${var.worker_sg_ingress_from_port}"
   to_port                  = 65535
   type                     = "ingress"
   count                    = "${var.worker_security_group_id == "" ? 1 : 0}"