Add proxmox terraform example

proxmox/.gitignore

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+cloud_drives

proxmox/README.md

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+# Proxmox
+
+This small examplez demo how to provision flatcar on proxmox using terraform
+
+## Prerequisite
+
+  - A proxmox cluster with credentials
+  - `terraform`
+  - `mkisofs`:
+      ArchLinux: `pacman -Sy crdtools`
+      Debian/Ubuntu: `apt install genisoimage`
+      Mac OS: `brew install cdrtools`
+      RPM/DNF based OS: `dnf install mkisofs`
+
+
+## How-to
+
+This module use the `bpg/proxmox` provider, and you configure it using environment variable [here](https://registry.terraform.io/providers/bpg/proxmox/latest/docs#argument-reference)
+
+```
+export PROXMOX_VE_ENDPOINT=
+export PROXMOX_VE_USERNAME=
+export PROXMOS_VE_PASSWORD=
+terraform init
+terraform apply
+```

proxmox/cloud_drives.tf

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+locals {
+  cloud_drives = { for vm in var.machines :
+    vm => "${path.module}/cloud_drives/${vm}/cloud_drive.iso"
+  }
+}
+
+data "ct_config" "ignition" {
+  for_each = toset(var.machines)
+  content = templatefile("templates/machine-${each.key}.yaml", {
+    ssh_keys = var.ssh_keys
+  })
+
+  strict = true
+}
+resource "local_file" "userdata_ignition" {
+  for_each = toset(var.machines)
+  content  = data.ct_config.ignition[each.key].rendered
+  filename = "${path.module}/cloud_drives/${each.key}/drive/openstack/latest/user_data"
+}
+
+resource "local_file" "meta_data_openstack" {
+  for_each = toset(var.machines)
+  content = templatefile("${path.module}/templates/meta_data.json", {
+    vm_name = each.key
+  })
+  filename = "${path.module}/cloud_drives/${each.key}/drive/openstack/latest/meta_data.json"
+}
+
+# Create cloud-drive cdrom locally
+resource "null_resource" "cloud_init_drive" {
+  for_each = toset(var.machines)
+  provisioner "local-exec" {
+    command = "mkisofs -output ${local.cloud_drives[each.key]} -volid config-2 -joliet -r ${path.module}/cloud_drives/${each.key}/drive"
+  }
+
+  depends_on = [local_file.meta_data_openstack, local_file.userdata_ignition]
+}
+
+# Upload cloud_drives to proxmox
+resource "proxmox_virtual_environment_file" "cloud_drive" {
+  for_each     = toset(var.machines)
+  content_type = "iso"
+  datastore_id = var.datastore_local
+  node_name    = local.hypervisor
+
+  source_file {
+    file_name = "${each.key}_cloud_drive.iso"
+    path      = local.cloud_drives[each.key]
+  }
+}

proxmox/output.tf

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+output "flatcar_template" {
+  value = proxmox_virtual_environment_vm.flatcar_template
+}

proxmox/providers.tf

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+terraform {
+  required_providers {
+    ct = {
+      source = "poseidon/ct"
+    }
+    proxmox = {
+      source = "bpg/proxmox"
+    }
+  }
+}

proxmox/templates/machine-test-flatcar.yaml

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+variant: flatcar
+version: 1.1.0
+passwd:
+  users:
+    - name: core
+      ssh_authorized_keys:
+      %{ for key in ssh_keys }
+      - ${key}
+      %{ endfor }
+systemd:
+  units:
+    - name: flatcar-openstack-hostname.service
+      mask: true
+storage:
+  files:
+    - path: /etc/systemd/network/00-eth0.network
+      contents:
+        inline: |
+          [Match]
+          Name=eth0
+          [Network]
+          Address=192.0.2.10/24
+          Gateway=192.0.2.1/24
+          DNS=1.1.1.1

proxmox/templates/meta_data.json

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+{
+   "uuid": "${ uuidv5("dns", vm_name) }",
+   "availability_zone": "nova",
+   "hostname": "${ vm_name }",
+   "launch_index": 0,
+   "meta": {},
+   "project_id": "${ uuidv5("dns", "proxmox") }",
+   "name": "${ vm_name }"
+}
+

proxmox/variables.tf

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+variable "machines" {
+  type        = list(string)
+  description = "Machine names, corresponding to templates/machine-NAME.yaml"
+}
+
+variable "datastore_local" {
+  default     = "local"
+  description = "datastore_id of hypervisor local storage"
+  type        = string
+}
+
+variable "datastore_vm" {
+  default     = "local-zfs"
+  description = "datastore_id of VM storage"
+  type        = string
+}
+
+variable "flatcar_version" {
+  type        = string
+  description = "The Flatcar version associated to the release channel"
+  default     = "current"
+}
+
+variable "release_channel" {
+  type        = string
+  description = "Release channel"
+  default     = "stable"
+
+  validation {
+    condition     = contains(["lts", "stable", "beta", "alpha"], var.release_channel)
+    error_message = "release_channel must be lts, stable, beta, or alpha."
+  }
+}
+
+variable "ssh_keys" {
+  default     = []
+  description = "List of ssh-keys to authenticate to the flatcar VM"
+  type        = list(string)
+}
+
+variable "vm_name" {
+  default     = "test-flatcar"
+  description = "proxmox VM name (also used as hostname in this repository)"
+  type        = string
+}

proxmox/virtual_machine.tf

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+
+resource "proxmox_virtual_environment_vm" "instance" {
+  for_each = toset(var.machines)
+  clone {
+    vm_id     = proxmox_virtual_environment_vm.flatcar_template.vm_id
+    node_name = local.hypervisor
+  }
+
+  name      = each.key
+  node_name = local.hypervisor
+  started   = true
+
+  cpu {
+    cores = 2
+  }
+
+  memory {
+    dedicated = 2048
+  }
+
+  cdrom {
+    enabled = true
+    file_id = "${var.datastore_local}:iso/${each.key}_cloud_drive.iso"
+  }
+
+  lifecycle {
+    ignore_changes = [
+      node_name
+    ]
+  }
+}
+

proxmox/vm_template.tf

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+data "proxmox_virtual_environment_nodes" "available_nodes" {}
+
+locals {
+  hypervisor = element(data.proxmox_virtual_environment_nodes.available_nodes.names, 0)
+  image_file = "flatcat-openstack-${var.release_channel}-${var.flatcar_version}.img"
+}
+
+resource "proxmox_virtual_environment_download_file" "flatcar_image" {
+
+  content_type = "iso"
+  datastore_id = var.datastore_local
+  node_name    = local.hypervisor
+  file_name    = local.image_file
+  overwrite    = false
+  url          = "https://${var.release_channel}.release.flatcar-linux.net/amd64-usr/${var.flatcar_version}/flatcar_production_openstack_image.img.gz"
+
+  decompression_algorithm = "gz"
+}
+
+resource "proxmox_virtual_environment_vm" "flatcar_template" {
+  depends_on = [proxmox_virtual_environment_download_file.flatcar_image]
+
+  name      = "flatcar-${var.release_channel}-${var.flatcar_version}"
+  node_name = local.hypervisor
+
+  cpu {
+    cores = 1
+  }
+
+  memory {
+    dedicated = 1024
+  }
+  disk {
+    datastore_id = var.datastore_vm
+    file_id      = "${var.datastore_local}:iso/${local.image_file}"
+    interface    = "virtio0"
+  }
+
+  template = true
+}