Add var to handle eip outside of module (#24)

* Additional var wether to create an eip

* update readme;

Author: pietzschke

README.md

@@ -152,6 +152,7 @@ No requirements.
 | user\_data\_runcmd | Additional runcmd section of cloud-init | `list` | `[]` | no |
 | user\_data\_write\_files | Additional write\_files section of cloud-init | `list` | `[]` | no |
 | vpc\_id | ID of the VPC | `string` | n/a | yes |
+| eip_creation | Whether to create an eip | `bool` | `true` | no | 
 
 ## Outputs
 

main.tf

@@ -32,7 +32,7 @@ resource "aws_network_interface" "this" {
 }
 
 resource "aws_eip" "this" {
-  count             = var.enabled ? 1 : 0
+  count             = var.enabled ? var.eip_creation ? 1 : 0 : 0
   network_interface = aws_network_interface.this.id
   tags              = local.common_tags
 }

outputs.tf

@@ -1,11 +1,11 @@
 output "eip_id" {
   description = "ID of the Elastic IP"
-  value       = var.enabled ? aws_eip.this[0].id : ""
+  value       = var.enabled ? var.eip_creation ? aws_eip.this[0].id : "" : ""
 }
 
 output "eip_public_ip" {
   description = "Public IP of the Elastic IP for the NAT instance"
-  value       = var.enabled ? aws_eip.this[0].public_ip : ""
+  value       = var.enabled ? var.eip_creation ? aws_eip.this[0].public_ip : "" : ""
 }
 
 output "eni_id" {

variables.tf

@@ -71,6 +71,11 @@ variable "user_data_runcmd" {
   type        = list
   default     = []
 }
+variable "eip_creation" {
+  description = "Whether to create an elastic ip"
+  type        = bool
+  default     = true
+}
 
 locals {
   // Generate common tags by merging variables and default Name