Merge pull request #144 from max-amb/terraform-private-network

This PR was made by a WEX student. It provides a template Terraform script to create a private network.

terraform_provisioning/README.md

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+# terraform_privisioning
+* This folder contains terraform scripts to manage openstack configurations
+* These require a `clouds.yaml` in `~/.config/openstack/` to provide authentication
+
+## priv_network.tf
+* This terraform scripts creates a private network with a subnet domain of `10.0.0.x`
+* It also adds a router to connect the private network to the external network
+* You must provide a external_network_id to connect to router to
+* The script must be run with `--var-file=vars.tfvars` to pass through the required variables

terraform_provisioning/priv_network.tf

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+# Define required providers
+terraform {
+required_version = ">= 0.14.0"
+  required_providers {
+    openstack = {
+      source  = "terraform-provider-openstack/openstack"
+      version = "~> 1.53.0"
+    }
+  }
+}
+
+provider "openstack" {
+    cloud = "openstack"
+}
+
+resource "openstack_networking_network_v2" "private_network" {
+  name           = "private_network"
+  admin_state_up = "true"
+}
+
+
+resource "openstack_networking_subnet_v2" "subnet" {
+  name       = "subnet"
+  network_id = openstack_networking_network_v2.private_network.id
+  cidr       = "10.0.0.0/24"
+  ip_version = 4
+}
+
+resource "openstack_networking_router_v2" "router" {
+  name                = "router"
+  external_network_id = var.external_network_id 
+}
+
+resource "openstack_networking_router_interface_v2" "router_interface" {
+  router_id = openstack_networking_router_v2.router.id
+  subnet_id = openstack_networking_subnet_v2.subnet.id
+}

terraform_provisioning/variables.tf

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+variable "external_network_id" {
+  description = "The id of the external network to connect the router to"
+  type = string 
+}

terraform_provisioning/vars.tfvars

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+external_network_id = ""