feat: add dhcp-server on oob port (#165)

Author: kid

terraform/modules/ros-dhcp/main.tf

@@ -0,0 +1,58 @@
+terraform {
+  required_version = ">= 1.8.0"
+
+  required_providers {
+    routeros = {
+      source  = "terraform-routeros/routeros"
+      version = "1.81.1"
+    }
+  }
+}
+
+locals {
+  cidr = "${var.cidr_prefix}/${var.cidr_bits}"
+}
+
+variable "interface" {
+  type = string
+}
+
+variable "cidr_prefix" {
+  type = string
+}
+
+variable "cidr_bits" {
+  type    = number
+  default = 24
+}
+
+variable "dhcp_start_ip" {
+  type    = number
+  default = 200
+}
+
+variable "dhcp_end_ip" {
+  type    = number
+  default = 254
+}
+
+variable "dhcp_lease_time" {
+  type    = string
+  default = "1d"
+}
+
+resource "routeros_ip_pool" "self" {
+  name   = var.interface
+  ranges = ["${cidrhost(local.cidr, var.dhcp_start_ip)}-${cidrhost(local.cidr, var.dhcp_end_ip)}"]
+}
+
+resource "routeros_ip_dhcp_server" "self" {
+  name         = var.interface
+  interface    = var.interface
+  lease_time   = var.dhcp_lease_time
+  address_pool = routeros_ip_pool.self.name
+}
+
+resource "routeros_ip_dhcp_server_network" "self" {
+  address = local.cidr
+}

terraform/modules/ros-management-config/inputs.tf

@@ -2,12 +2,18 @@ variable "bridge_name" {
   type = string
 }
 
-variable "oob_mgmt_port" {
+variable "oob_mgmt_interface" {
   type = string
 }
 
-variable "oob_mgmt_address" {
-  type = string
+variable "oob_mgmt_cidr_prefix" {
+  type    = string
+  default = "192.168.88.0"
+}
+
+variable "oob_mgmt_cidr_bits" {
+  type    = number
+  default = 24
 }
 
 variable "mgmt_vlan_id" {

terraform/modules/ros-management-config/main.tf

@@ -1,14 +1,20 @@
+# TODO: set router identity
+# TODO: import SSH keys
 # TODO: add dhcp-server on management subnet
 # TODO: add dhcp-client on admin vlan
 # TODO: implement VRF for services
 
+locals {
+  oob_mgmt_cidr = "${var.oob_mgmt_cidr_prefix}/${var.oob_mgmt_cidr_bits}"
+}
+
 resource "routeros_interface_list" "admin" {
   name = "admin-ifces"
 }
 
-resource "routeros_interface_list_member" "admin_port" {
+resource "routeros_interface_list_member" "admin_interface" {
   list      = routeros_interface_list.admin.name
-  interface = var.oob_mgmt_port
+  interface = var.oob_mgmt_interface
 }
 
 resource "routeros_interface_list_member" "admin_vlan" {
@@ -22,7 +28,15 @@ resource "routeros_interface_vlan" "admin" {
   vlan_id   = var.mgmt_vlan_id
 }
 
-resource "routeros_ip_address" "admin" {
-  interface = var.oob_mgmt_port
-  address   = var.oob_mgmt_address
+resource "routeros_ip_address" "oob" {
+  interface = var.oob_mgmt_interface
+  address   = "${cidrhost(local.oob_mgmt_cidr, 1)}/${var.oob_mgmt_cidr_bits}"
+}
+
+module "oob_dhcp" {
+  source = "../ros-dhcp"
+
+  interface   = var.oob_mgmt_interface
+  cidr_prefix = var.oob_mgmt_cidr_prefix
+  cidr_bits   = var.oob_mgmt_cidr_bits
 }

terraform/stacks/network-new/main.tf

@@ -63,10 +63,9 @@ module "crs320_management_config" {
 
   source = "../../modules/ros-management-config"
 
-  bridge_name      = module.crs320_bridge.bridge_name
-  mgmt_vlan_id     = 99
-  oob_mgmt_address = "192.168.88.1/24"
-  oob_mgmt_port    = "ether17"
+  bridge_name        = module.crs320_bridge.bridge_name
+  mgmt_vlan_id       = 99
+  oob_mgmt_interface = "ether17"
 }
 
 output "debug" {