From c2aa4919bd56857dc44b4faae9694a6be7a0f6ce Mon Sep 17 00:00:00 2001
From: Matthew Baggett <matthew@baggett.me>
Date: Wed, 27 Nov 2024 15:28:10 +0100
Subject: [PATCH] Add private cidr
---
utils/private-cidr/cidr.tf | 15 +++++++++++++++
utils/private-cidr/outputs.tf | 6 ++++++
utils/private-cidr/terraform.tf | 12 ++++++++++++
3 files changed, 33 insertions(+)
create mode 100644 utils/private-cidr/cidr.tf
create mode 100644 utils/private-cidr/outputs.tf
create mode 100644 utils/private-cidr/terraform.tf
diff --git a/utils/private-cidr/cidr.tf b/utils/private-cidr/cidr.tf
new file mode 100644
index 0000000..d74bb56
--- /dev/null
+++ b/utils/private-cidr/cidr.tf
@@ -0,0 +1,15 @@
+resource "random_integer" "upper_mid_byte" {
+ min = 18
+ max = 31
+}
+resource "random_integer" "lower_mid_byte" {
+ min = 10
+ max = 254
+}
+locals {
+ // Generate a subnet
+ subnet = "172.${random_integer.upper_mid_byte.result}.${random_integer.lower_mid_byte.result}.0/24"
+ // Calculate the gateway from the subnet
+ gateway = cidrhost(local.subnet, 1)
+}
+
diff --git a/utils/private-cidr/outputs.tf b/utils/private-cidr/outputs.tf
new file mode 100644
index 0000000..82e6aa0
--- /dev/null
+++ b/utils/private-cidr/outputs.tf
@@ -0,0 +1,6 @@
+output "subnet" {
+ value = local.subnet
+}
+output "gateway" {
+ value = local.gateway
+}
\ No newline at end of file
diff --git a/utils/private-cidr/terraform.tf b/utils/private-cidr/terraform.tf
new file mode 100644
index 0000000..a9f39e7
--- /dev/null
+++ b/utils/private-cidr/terraform.tf
@@ -0,0 +1,12 @@
+terraform {
+ required_version = "~> 1.6"
+
+ required_providers {
+ random = {
+ source = "hashicorp/random"
+ version = "~> 3.5"
+ }
+ }
+}
+
+