Init Project

.gitignore

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+*.hcl
+*.tfstate*
+.terraform/

cdrom-model.xsl

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+<?xml version="1.0" ?>
+<xsl:stylesheet version="1.0"
+                xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+  <xsl:output omit-xml-declaration="yes" indent="yes"/>
+  <xsl:template match="node()|@*">
+     <xsl:copy>
+       <xsl:apply-templates select="node()|@*"/>
+     </xsl:copy>
+  </xsl:template>
+
+  <xsl:template match="/domain/devices/disk[@device='cdrom']/target/@bus">
+    <xsl:attribute name="bus">
+      <xsl:value-of select="'scsi'"/>
+    </xsl:attribute>
+  </xsl:template>
+
+</xsl:stylesheet>

cloud_init.yml

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+#cloud-config
+ssh_pwauth: True
+chpasswd:
+  list: |
+     root:linux
+  expire: False
+users:
+  - name: "${login}"
+    sudo: ALL=(ALL) NOPASSWD:ALL
+    plain_text_passwd: "${passwd}"
+    shell: /bin/bash
+    lock-passwd: false
+    ssh_pwauth: True
+    chpasswd: { expire: False }
+package_update: true
+packages:
+  - qemu-guest-agent
+runcmd:
+  - [ netplan, generate ]
+  - [ netplan, apply ]
+  - [ systemctl, enable, --now, qemu-guest-agent ]

main.tf

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+data "template_file" "user_data" {
+  count = length(var.domains)
+  template = file("${path.module}/cloud_init.yml")
+  vars = {
+    login = "admin"
+    ip = var.domains[count.index].ip
+  }
+}
+
+data "template_file" "network_config" {
+  count = length(var.domains)
+  template = file("${path.module}/network_config.yml")
+  vars = {
+    ip = var.domains[count.index].ip
+  }
+}
+
+
+resource "libvirt_pool" "pool" {
+  name = "${var.prefix}pool"
+  type = "dir"
+  target {
+    path = "${var.pool_path}/${var.prefix}pool"  
+  }
+}
+
+resource "libvirt_volume" "image" {
+  name   = var.image.name
+  format = "qcow2"
+  pool   = libvirt_pool.pool.name
+  source = var.image.url
+}
+
+resource "libvirt_volume" "root" {
+  count = length(var.domains)
+  name           = "${var.prefix}${var.domains[count.index].name}-root.qcow2"
+  pool           = libvirt_pool.pool.name
+  base_volume_id = libvirt_volume.image.id
+  size           = var.domains[count.index].disk
+  format         = "qcow2"
+}
+
+# resource "libvirt_network" "br0" {
+#   bridge = "br0"
+#   name = "br0"
+#   mode = "bridge"
+#   autostart = true
+# }
+
+resource "libvirt_cloudinit_disk" "commoninit" {
+  count = length(var.domains)
+  name           = "commoninit-${var.domains[count.index].name}.iso"
+  pool           = libvirt_pool.pool.name
+  user_data = data.template_file.user_data[count.index].rendered
+  network_config = data.template_file.network_config[count.index].rendered
+}
+
+resource "libvirt_domain" "vm" {
+  count = length(var.domains)
+  name = var.domains[count.index].name
+  memory = var.domains[count.index].ram
+  vcpu = var.domains[count.index].cpu
+  machine = "q35"
+  arch = "x86_64"
+  
+  xml {
+    xslt = file("/home/filimonov/t1/cdrom-model.xsl")
+  }
+
+  cloudinit = libvirt_cloudinit_disk.commoninit[count.index].id
+
+
+  cpu {
+   mode = "custom" 
+  }
+
+  network_interface {
+    network_name = "br0"
+  }
+  
+  disk {
+    volume_id = libvirt_volume.root[count.index].id
+    scsi = "true"
+  }
+}

network_config.yml

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+version: 2
+ethernets:
+  enp1s0:
+    link-local:
+      - ipv4
+    dhcp4: false
+    addresses:
+      - "${ip}/24"
+    routes:
+      - to: default
+        via: 172.16.1.1
+    nameservers:
+      addresses:
+        - 8.8.8.8

providers.tf

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+provider "libvirt" {
+  uri = "qemu:///system"
+}

terraform.tfvars

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+prefix = "vm-"
+
+pool_path = "/opt/vm"
+
+image = {
+  name = "cloud"
+#   url  = "http://localhost/gold-ubuntu.qcow2"
+  url = "http://localhost/ubuntu-24.04-server-cloudimg-amd64.img"
+  format = "qcow2"
+}
+
+vm = {
+  bridge = "br0"
+  cpu    = 1
+  disk   = 10 * 1024 * 1024 * 1024
+  ram    = 512
+}
+
+domains = [
+  {
+    name = "vm-node1"
+    cpu  = 1
+    ram  = 2048
+    disk = 20 * 1024 * 1024 * 1024
+    ip = "172.16.1.181"
+  },
+  {
+    name = "vm-node2"
+    cpu  = 1
+    ram  = 2048
+    disk = 20 * 1024 * 1024 * 1024
+    ip = "172.16.1.182"
+  },
+  {
+    name = "vm-master1"
+    cpu  = 1
+    ram  = 2048
+    disk = 20 * 1024 * 1024 * 1024
+    ip = "172.16.1.180"
+  }
+
+]

variables.tf

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+variable "prefix" {
+  type    = string
+  default = "vm-"
+}
+
+variable "pool_path" {
+  type    = string
+  default = "/var/lib/libvirt/"
+}
+
+variable "image" {
+  type = object({
+    name = string
+    url  = string
+    format = string
+  })
+}
+
+variable "vm" {
+  type = object({
+    cpu    = number
+    ram    = number
+    disk   = number
+    bridge = string
+  })
+}
+
+variable "domains" {
+  description = "List of VMs with specified parameters"
+  type = list(object({
+    name = string,
+    cpu  = number,
+    ram  = number,
+    disk = number,
+    ip   = string
+  }))
+}

versions.tf

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+terraform {
+ required_version = ">= 0.13"
+  required_providers {
+    libvirt = {
+      source  = "dmacvicar/libvirt"
+      version = "0.8.1"
+    }
+  }
+}