Setting passwords and keys working via variables.

- Setting hostnames is working also.

cloud_init.cfg

@@ -10,17 +10,21 @@ users:
     shell: /usr/bin/bash
     sudo: ALL=(ALL) NOPASSWD:ALL
     ssh_authorized_keys:
-      - ssh-rsa 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 admin
+      - ${admin-pub-key}
   - name: root
     ssh_authorized_keys:
-      - ssh-rsa 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 admin
+      - ${admin-pub-key}
 
 ssh_pwauth: true
 disable_root: false
 chpasswd:
   list:
+    - root:${admin-passwd}
+    - admin:${admin-passwd}
   expire: false
 
+hostname: ${hostname}
+
 # Use this when it's determined that we need a bigger disk image.
 # This must be used in conjuction with 'size' in 'libvirt_volume'
 # growpart:

main.tf

@@ -35,31 +35,55 @@ resource "libvirt_volume" "worker-volumes" {
   count  = var.worker-nodes
 }
 
-data "template_file" "user_data" {
+data "template_file" "master-user-data" {
   template = file("${path.module}/cloud_init.cfg")
+  vars = {
+    admin-passwd = "${var.root-admin-passwd}"
+    admin-pub-key = "${var.root-admin-pub-key}"
+    hostname = "k8s-tf-master"
+  }
+}
+
+data "template_file" "worker-user-data" {
+  template = file("${path.module}/cloud_init.cfg")
+  vars = {
+    admin-passwd = "${var.root-admin-passwd}"
+    admin-pub-key = "${var.root-admin-pub-key}"
+    hostname = "k8s-tf-worker-${count.index}"
+  }
+  count = var.worker-nodes
 }
 
 data "template_file" "network_config" {
   template = file("${path.module}/network_config.cfg")
 }
 
-resource "libvirt_cloudinit_disk" "commoninit" {
+resource "libvirt_cloudinit_disk" "master-init" {
-  name           = "commoninit.images"
+  name           = "k8s-tf-master-init"
-  user_data      = data.template_file.user_data.rendered
+  user_data      = data.template_file.master-user-data.rendered
   network_config = data.template_file.network_config.rendered
   pool           = libvirt_pool.images.name
 }
 
+resource "libvirt_cloudinit_disk" "worker-init" {
+  name           = "k8s-tf-worker-${count.index}-init"
+  user_data      = element(data.template_file.worker-user-data.*.rendered, count.index)
+  network_config = data.template_file.network_config.rendered
+  pool           = libvirt_pool.images.name
+  count = var.worker-nodes
+}
+
 # Create the machine
 resource "libvirt_domain" "master-domain" {
   name   = "k8s-tf-master"
   memory = var.node-memory
   vcpu   = var.node-vcpus
 
-  cloudinit = libvirt_cloudinit_disk.commoninit.id
+  cloudinit = libvirt_cloudinit_disk.master-init.id
 
   network_interface {
     network_name = "default"
+    hostname     = "k8s-tf-master"
   }
 
   # IMPORTANT: this is a known bug on cloud images, since they expect a console
@@ -94,10 +118,11 @@ resource "libvirt_domain" "worker-domains" {
   memory = var.node-memory
   vcpu   = var.node-vcpus
 
-  cloudinit = libvirt_cloudinit_disk.commoninit.id
+  cloudinit = element(libvirt_cloudinit_disk.worker-init.*.id, count.index)
 
   network_interface {
     network_name = "default"
+    hostname     = "k8s-tf-worker-${count.index}"
   }
 
   # IMPORTANT: this is a known bug on cloud images, since they expect a console

variables.tf

@@ -15,6 +15,14 @@ variable "node-vcpus" {
   type        = number
 }
 
+variable "root-admin-passwd" {
+  description = "This will be the password for the root and admin user. The format of this can by any format accepted by cloud-init's chpasswd module."
+}
+
+variable "root-admin-pub-key" {
+  description = "The public key to be added to authorized_keys for the root and admin accounts."
+}
+
 variable "worker-nodes" {
   default     = "2"
   description = "The number of worker nodes to create."