• https://releases.hashicorp.com/terraform/
• https://hashicorp-releases.yandexcloud.net/terraform/
• How to Install Terraform on Debian 12

• Основы Terraform Язык HCL

• How to properly reset Terraform default tfstate?

# VER=1.9.2

# wget https://hashicorp-releases.yandexcloud.net/terraform/$VER/terraform_${VER}_linux_amd64.zip

# unzip terraform_${VER}_linux_amd64.zip

# mv terraform /usr/local/bin/

# terraform version

• Технология KVM Интеграция с Cloud-init
• Модуль AppArmor Выключение

• Terraform with KVM
• https://github.com/dmacvicar/terraform-provider-libvirt/tree/main/examples/v0.13/ubuntu
• KVM: Terraform and cloud-init to create local KVM resources
• Использование Terraform на серверах с KVM. Часть 1
• Configure VNC listen address

• Migrate from template_file to templatefile

• https://github.com/dmacvicar/terraform-provider-libvirt/releases/

~# wget https://github.com/dmacvicar/terraform-provider-libvirt/releases/download/v0.7.6/terraform-provider-libvirt_0.7.6_linux_amd64.zip

~# unzip terraform-provider-libvirt_0.7.6_linux_amd64.zip

~# mkdir -p ~/.local/share/terraform/plugins/registry.terraform.io/dmacvicar/libvirt/0.7.6/linux_amd64

~# mv ./terraform-provider-libvirt_v0.7.6 ~/.local/share/terraform/plugins/registry.terraform.io/dmacvicar/libvirt/0.7.6/linux_amd64/terraform-provider-libvirt

~# mkdir -p nodes; cd $_

~/nodes# cat node1.tf

terraform {
  required_providers {
    libvirt = {
      source  = "dmacvicar/libvirt"
      version = "0.7.6"
    }
  }
}

~/nodes# terraform init

~/nodes# find .terraform/
...
.terraform/providers/registry.terraform.io/dmacvicar/libvirt/0.7.6/linux_amd64
...

~/nodes# cp network-config network-config.tftpl

~/nodes# cat meta-data.tftpl

local-hostname: ${name}

~/nodes# cat network-config.tftpl

...
  ens3:
    dhcp4: true
#    dhcp4: false
#    addresses:
#      - 192.168.X.${ip}/24
...

~/nodes# cat node1.tf

...

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

resource "libvirt_pool" "pool-nodes" {
  name = "pool-nodes"
  type = "dir"
  path = "/var/lib/libvirt/pool-nodes"
}

resource "libvirt_volume" "image" {
  name   = "linux-cloudimg"
  pool   = libvirt_pool.pool-nodes.name
#  source = "/root/noble-server-cloudimg-amd64.img"
  source = "/root/debian-12-generic-amd64.qcow2"
}

resource "libvirt_volume" "disk-node1" {
  name           = "disk-node1"
  pool           = libvirt_pool.pool-nodes.name
  base_volume_id = libvirt_volume.image.id
  size           = 10 * 1024 * 1024 * 1024
}

#data "template_file" "user-data" {
#...
#}

locals {
  meta-data      = templatefile("${path.module}/meta-data.tftpl", { name = "node1" })
  user-data      = templatefile("${path.module}/user-data", {})
  network-config = templatefile("${path.module}/network-config.tftpl", { ip = 201 })
}

resource "libvirt_cloudinit_disk" "commoninit" {
  name           = "commoninit.iso"
  meta_data      = local.meta-data
  user_data      = local.user-data
  network_config = local.network-config
  pool           = libvirt_pool.pool-nodes.name
}

resource "libvirt_domain" "domain-node1" {
  name   = "domain-node1"
  memory = "2048"
  vcpu   = 2

  cloudinit = libvirt_cloudinit_disk.commoninit.id

  qemu_agent = true
  autostart  = true

  network_interface {
    bridge         = "br0"
    wait_for_lease = true
  }

  timeouts {
    create = "30m"
  }

  console {
    type        = "pty"
    target_port = "0"
    target_type = "serial"
  }
  graphics {
    type        = "vnc"
    listen_type = "address"
    listen_address = "0.0.0.0"
    autoport    = "true"
  }

  disk {
    volume_id = libvirt_volume.disk-node1.id
  }
}

output "vm_name" {
  value       = libvirt_domain.domain-node1.name
  description = "VM name"
}

output "vm_ip" {
  value       = libvirt_domain.domain-node1.network_interface[0].addresses.0
  description = "Interface IPs"
}

~/nodes# terraform validate

~/nodes# terraform plan

~/nodes# terraform apply #-auto-approve

~/nodes# terraform state list

~/nodes# terraform state show libvirt_domain.domain-node1

~/nodes# virsh console --domain domain-node1

~/nodes# virsh vncdisplay domain-node1

~/nodes# terraform destroy #-auto-approve

~/nodes# ### rm -r .terraform .terraform.lock.hcl terraform.tfstate terraform.tfstate.backup

• Использование Terraform на серверах с KVM. Часть 2

home-computer:~/nodes# cat variables.tf

variable "domains" {
  description = "List of VMs with specified parameters"
  type = list(object({
    name = string,
    ip   = string
  }))
}

home-computer:~/nodes# cat terraform.tfvars

domains = [
  {
    name = "node1"
    ip   = "201"
  },
  {
    name = "node2"
    ip   = "202"
  },
  {
    name = "node3"
    ip   = "203"
  }
]

home-computer:~/nodes# cat meta-data.tftpl

local-hostname: ${name}

home-computer:~/nodes# cat network-config.tftpl

version: 2
ethernets:
  ens3:
    dhcp4: false
    addresses:
      - 192.168.X.${ip}/24
    routes:
      - to: default
        via: 192.168.X.1
    nameservers:
      search: [isp.un, corpX.un]
      addresses: [192.168.X.10]

home-computer:~/nodes# cat nodes.tf

...
resource "libvirt_volume" "disk-noden" {
  count          = length(var.domains)

  name           = "disk-${var.domains[count.index].name}"
  pool           = libvirt_pool.pool-nodes.name
  base_volume_id = libvirt_volume.image.id
  size           = 10 * 1024 * 1024 * 1024
}

locals {
  user-data = templatefile("${path.module}/user-data", {})
  meta-data = [
    for n in range(length(var.domains)) : templatefile("${path.module}/meta-data.tftpl", {
      name = "${var.domains[n].name}"
    })
  ]
  network-config = [
    for n in range(length(var.domains)) : templatefile("${path.module}/network-config.tftpl", {
      ip = "${var.domains[n].ip}"
    })
  ]
}

resource "libvirt_cloudinit_disk" "commoninit" {
  count          = length(var.domains)
  name           = "commoninit-${var.domains[count.index].name}.iso"
  meta_data      = local.meta-data[count.index]
  user_data      = local.user-data
  network_config = local.network-config[count.index]
  pool           = libvirt_pool.pool-nodes.name
}

resource "libvirt_domain" "domain-noden" {
  count = length(var.domains)

  name   = "domain-${var.domains[count.index].name}"
  memory = "2048"
  vcpu   = 2

  cloudinit = libvirt_cloudinit_disk.commoninit[count.index].id

  qemu_agent = true
  autostart = true

  network_interface {
    bridge         = "br0"
    wait_for_lease = true
  }

  timeouts {
    create = "30m"
  }

  console {
    type        = "pty"
    target_port = "0"
    target_type = "serial"
  }
  graphics {
    type           = "vnc"
    listen_type    = "address"
    listen_address = "0.0.0.0"
    autoport       = "true"
  }

  disk {
    volume_id = libvirt_volume.disk-noden[count.index].id
  }
}

output "vms_info" {
  description = "General information about created VMs"
  value = [
    for vm in libvirt_domain.domain-noden : {
      id = vm.name
      ip = vm.network_interface[0].addresses.0
    }
  ]
}