merge with tf-debian-vm

debian/files/cloud_init.cfg.tftpl

@@ -0,0 +1,53 @@
+#cloud-config
+hostname: "${name}"
+manage_etc_hosts: true
+disable_root: false
+timezone: Europe/Amsterdam
+
+ssh_authorized_keys:
+%{ for key in admin_authorized_keys ~}
+  - "${key}"
+%{ endfor ~}
+
+%{ if insecure_password }
+chpasswd:
+  list: |
+    root:root
+  expire: False
+ssh_pwauth: true
+%{ else }
+ssh_pwauth: false
+%{ endif }
+
+%{ if use_host_cert }
+ssh_keys:
+  ed25519_private: |
+    ${indent(4, private_key)}
+  ed25519_certificate: "${host_cert}"
+%{ endif}
+
+write_files:
+- path: /etc/default/locale
+  content: |
+    LC_ALL=en_US.UTF-8
+    LANG=en_US.UTF-8
+- path: /etc/locale.gen
+  content: |
+    en_US.UTF-8 UTF-8
+
+runcmd:
+- dhclient -r
+- dhclient
+- locale-gen
+
+%{ if data_share != "" }
+mounts:
+- ["data", "${data_share}", "9p", "trans=virtio,rw", "0", "0"]
+%{ endif }
+
+%{ if fixed_dns != "" }
+manage_resolv_conf: true
+resolv_conf:
+  nameservers:
+    - "${fixed_dns}"
+%{ endif }

debian/files/get_cert.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+set -euo pipefail
+IFS=$'\n\t'
+
+eval "$(jq -r '@sh "PUBKEY=\(.pubkey) HOST=\(.host) CAHOST=\(.cahost) CASCRIPT=\(.cascript) CAKEY=\(.cakey)"')"
+
+# TODO: Can this be done more eye-pleasingly?
+set +e
+CERT=$(ssh -o ConnectTimeout=3 -o ConnectionAttempts=1 root@$CAHOST '"'"$CASCRIPT"'" host "'"$CAKEY"'" "'"$PUBKEY"'" "'"$HOST"'".dmz')
+retval=$?
+set -e
+
+if [ retval -neq 0 ]; then
+	CERT=""
+fi
+
+jq -n --arg cert "$CERT" '{"cert":$cert}'

debian/files/network_config.cfg.tftpl

@@ -0,0 +1,16 @@
+version: 2
+ethernets:
+  ens:
+    match:
+      name: ens*
+%{ if fixed_address != "" }
+    dhcp4: false
+    addresses:
+      - "${fixed_address}"
+%{ else }
+    dhcp4: true
+%{ endif }
+    dhcp4: true
+    routes:
+    - to: 0.0.0.0/0
+      via: 192.168.30.1

debian/main.tf

@@ -10,27 +10,140 @@ module "invariants" {
   source = "git::https://git.pim.kunis.nl/home/tf-modules.git//invariants"
 }
 
-module "tf_debian_vm" {
+locals {
-  source                = "git::https://git.pim.kunis.nl/pim/tf-debian-vm.git"
-  name                  = var.name
-  domain_name           = var.domain_name
   admin_authorized_keys = coalesce(var.admin_authorized_keys, module.invariants.admin_authorized_keys)
-  insecure_password     = var.insecure_password
+  cloudinit_user_data = templatefile("${path.module}/files/cloud_init.cfg.tftpl", {
-  use_host_cert         = var.use_host_cert
+    name                  = var.name,
-  disk_pool             = coalesce(var.disk_pool, module.invariants.disk_pool)
+    admin_authorized_keys = local.admin_authorized_keys,
-  disk_base             = coalesce(var.disk_base, module.invariants.disk_base)
+    insecure_password     = var.insecure_password,
-  disk_base_pool        = coalesce(var.disk_base_pool, module.invariants.disk_base_pool)
+    use_host_cert         = var.use_host_cert,
-  cloudinit_pool        = coalesce(var.cloudinit_pool, module.invariants.cloudinit_pool)
+    host_cert             = trimspace(null_resource.cert.triggers["cert"]),
-  bridge_name           = coalesce(var.bridge_name, module.invariants.bridge_name)
+    private_key           = tls_private_key.debian.private_key_openssh,
-  ca_host               = module.invariants.ca_host
+    fixed_dns             = var.fixed_dns
-  ca_script             = module.invariants.ca_script
+    data_share            = var.data_share
-  ca_key                = var.ca_key
+  })
-  memory                = var.memory
+  cloudinit_network_config = templatefile("${path.module}/files/network_config.cfg.tftpl", {
-  fixed_address         = var.fixed_address
+    fixed_address = var.fixed_address
-  ansible_command       = var.ansible_command
+  })
-  mac                   = var.mac
+  domain_name    = coalesce(var.domain_name, var.name)
-  fixed_dns             = var.fixed_dns
+  disk_pool      = coalesce(var.disk_pool, module.invariants.disk_pool)
-  disk_size             = var.disk_size
+  disk_base      = coalesce(var.disk_base, module.invariants.disk_base)
-  data_share            = var.data_share
+  disk_base_pool = coalesce(var.disk_base_pool, module.invariants.disk_base_pool)
-  hypervisor_host       = var.hypervisor_host
+  cloudinit_pool = coalesce(var.cloudinit_pool, module.invariants.cloudinit_pool)
+  bridge_name    = coalesce(var.bridge_name, module.invariants.bridge_name)
+}
+
+resource "tls_private_key" "debian" {
+  algorithm = "ED25519"
+}
+
+data "tls_public_key" "debian" {
+  private_key_pem = tls_private_key.debian.private_key_pem
+}
+
+data "external" "cert" {
+  program = ["bash", "${path.module}/files/get_cert.sh"]
+
+  query = {
+    pubkey   = trimspace(data.tls_public_key.debian.public_key_openssh)
+    host     = var.name
+    cahost   = module.invariants.ca_host
+    cascript = module.invariants.ca_script
+    cakey    = var.ca_key
+  }
+}
+
+resource "null_resource" "cert" {
+  triggers = {
+    cert = data.external.cert.result["cert"]
+  }
+
+  lifecycle {
+    ignore_changes = [
+      triggers
+    ]
+
+    postcondition {
+      condition     = data.external.cert.result["cert"] != "" || !var.use_host_cert
+      error_message = "Error retrieving host certificate."
+    }
+  }
+}
+
+resource "libvirt_volume" "debian" {
+  name             = "${local.domain_name}.iso"
+  pool             = local.disk_pool
+  size             = var.disk_size
+  base_volume_name = local.disk_base
+  base_volume_pool = local.disk_base_pool
+
+  lifecycle {
+    replace_triggered_by = [
+      libvirt_cloudinit_disk.debian.id
+    ]
+  }
+}
+
+resource "libvirt_cloudinit_disk" "debian" {
+  name           = "${local.domain_name}.iso"
+  pool           = local.cloudinit_pool
+  user_data      = local.cloudinit_user_data
+  network_config = local.cloudinit_network_config
+}
+
+resource "null_resource" "data_share" {
+  connection {
+    type = "ssh"
+    user = "root"
+    host = var.hypervisor_host
+  }
+
+  provisioner "remote-exec" {
+    inline = [
+      "if [ \"${var.data_share}\" != \"\"; then mkdir -p --mode=og=rwx /data/${local.domain_name}; fi"
+    ]
+  }
+}
+
+resource "libvirt_domain" "debian" {
+  name      = local.domain_name
+  memory    = var.memory
+  vcpu      = 4
+  autostart = true
+
+  disk {
+    volume_id = libvirt_volume.debian.id
+  }
+
+  dynamic "filesystem" {
+    for_each = var.data_share != "" ? [1] : []
+
+    content {
+      source   = "/data/${local.domain_name}"
+      target   = "data"
+      readonly = false
+    }
+  }
+
+  network_interface {
+    bridge   = local.bridge_name
+    hostname = var.name
+    mac      = var.mac
+  }
+
+  cloudinit = libvirt_cloudinit_disk.debian.id
+
+  provisioner "local-exec" {
+    command = var.ansible_command
+  }
+
+  lifecycle {
+    replace_triggered_by = [
+      libvirt_cloudinit_disk.debian.id
+    ]
+  }
+
+  depends_on = [
+    null_resource.data_share
+  ]
 }