WIP - Add Elastic IP tags (#74)

* Update eip.tf

* add variable

* removed variable from top level module and added name prefix logic to single cluster module

eip.tf

@@ -14,7 +14,7 @@
 
 resource "aws_eip" "mod_nat" {
   count = var.multi_az_nat_gateway * var.az_count + var.single_nat_gateway * 1
-  tags  = var.global_tags
+  tags = var.global_tags
   vpc   = true
 }
 

modules/single-cluster/variables.tf

@@ -79,18 +79,26 @@ variable "extra_tags_private_subnet" {
   default     = {}
 }
 
+## Tagging Settings
+variable "elastic_ip_name_prefix" {
+  type        = string
+  description = "The name prefix for each eip."
+  default     = ""
+}
+
 # Local Vars
 locals {
+  eip_name_prefix = length(var.elastic_ip_name_prefix) > 0 ? "${var.elastic_ip_name_prefix}-" : ""
   default_tags = {
     "ManagedVia" = "Terraform"
     "Author"     = "Fairwinds"
   }
 
-  tags             = merge(local.default_tags, var.extra_tags_global)
-  admin_subnet_tags = merge(local.tags, var.extra_tags_admin_subnet)
+  tags                = merge(local.default_tags, var.extra_tags_global)
+  admin_subnet_tags   = merge(local.tags, var.extra_tags_admin_subnet)
   private_subnet_tags = merge(local.tags, var.extra_tags_private_subnet)
-  public_subnet_tags = merge(local.tags, var.extra_tags_public_subnet)
-  avail_zones_list = split(",", var.availability_zones)
+  public_subnet_tags  = merge(local.tags, var.extra_tags_public_subnet)
+  avail_zones_list    = split(",", var.availability_zones)
 }
 
 # Usage validation

modules/single-cluster/vpc.tf

@@ -59,8 +59,13 @@ resource "aws_nat_gateway" "nat_gateway" {
 
 resource "aws_eip" "mod_nat" {
   count = length(local.avail_zones_list)
-  tags  = local.tags
-  vpc   = true
+  tags = merge(
+    local.tags,
+    {
+      "Name" = "${local.eip_name_prefix}${var.vpc_name}_${local.avail_zones_list[count.index]}"
+    },
+  )
+  vpc = true
 }
 
 output "aws_eip_nat_ips" {

variables.tf

@@ -165,30 +165,30 @@ POLICY
 
 variable "s3_vpc_endpoint_route_table_ids" {
   description = "By default routes to the s3 endpoint are added for private subnet route tables. Pass additional route table ids that require routes."
-  type = list(string)
-  default = []
+  type        = list(string)
+  default     = []
 }
 
 variable "internet_gateway_tags" {
   description = "Tags to apply to the internet gateway"
-  default = {}
+  default     = {}
 }
 
 variable "public_route_table_tags" {
   description = "Tags to apply to the public route table"
-  default = {}
+  default     = {}
 }
 
 variable "private_route_table_tags" {
   description = "Tags to apply to the private route table"
-  default = {}
+  default     = {}
 }
 
 variable "global_tags" {
   description = "AWS tags that will be added to all resources managed herein"
-  type = map(string)
+  type        = map(string)
   default = {
-    "Author" = "Fairwinds"
+    "Author"     = "Fairwinds"
     "Managed By" = "Terraform"
   }
 }