Made cloud-init configs an input to libvirt-nodes.

main.tf

@@ -97,29 +97,31 @@ module "worker-nodes" {
 # }
 # 
 # module "master-nodes" {
-#   source = "./modules/libvirt-nodes"
-#   pool-name = libvirt_pool.images.name
-#   name-prefix = "${var.vm-name-prefix}-master"
-#   num-nodes = var.master-nodes
-#   node-memory = var.node-memory
-#   node-vcpus = var.node-vcpus
-#   base-image = var.base-image
-#   root-admin-passwd = var.root-admin-passwd
-#   root-admin-pub-key = var.root-admin-pub-key
+#   source                 = "./modules/libvirt-nodes"
+#   pool-name              = libvirt_pool.images.name
+#   name-prefix            = "${var.vm-name-prefix}-master"
+#   num-nodes              = var.master-nodes
+#   node-memory            = var.node-memory
+#   node-vcpus             = var.node-vcpus
+#   base-image             = var.base-image
+#   root-admin-passwd      = var.root-admin-passwd
+#   root-admin-pub-key     = var.root-admin-pub-key
 #   libvirt-connection-url = var.libvirt-connection-url
+#   user-datas             = data.template_file.master-node-user-datas
 # }
 # 
 # module "worker-nodes" {
-#   source = "./modules/libvirt-nodes"
-#   pool-name = libvirt_pool.images.name
-#   name-prefix = "${var.vm-name-prefix}-worker"
-#   num-nodes = var.worker-nodes
-#   node-memory = var.node-memory
-#   node-vcpus = var.node-vcpus
-#   base-image = var.base-image
-#   root-admin-passwd = var.root-admin-passwd
-#   root-admin-pub-key = var.root-admin-pub-key
+#   source                 = "./modules/libvirt-nodes"
+#   pool-name              = libvirt_pool.images.name
+#   name-prefix            = "${var.vm-name-prefix}-worker"
+#   num-nodes              = var.worker-nodes
+#   node-memory            = var.node-memory
+#   node-vcpus             = var.node-vcpus
+#   base-image             = var.base-image
+#   root-admin-passwd      = var.root-admin-passwd
+#   root-admin-pub-key     = var.root-admin-pub-key
 #   libvirt-connection-url = var.libvirt-connection-url
+#   user-datas             = data.template_file.worker-node-user-datas
 # }
 # 
 # resource "libvirt_pool" "images" {

modules/libvirt-nodes/main.tf

@@ -20,31 +20,21 @@ resource "libvirt_volume" "node-images" {
   format = "qcow2"
 }
 
-data "template_file" "node-user-datas" {
-  template = file("${path.module}/cloud_init.cfg")
-  vars = {
-    admin-passwd  = "${var.root-admin-passwd}"
-    admin-pub-key = "${var.root-admin-pub-key}"
-    hostname      = "${var.name-prefix}-${count.index}"
-  }
-  count = var.num-nodes
-}
-
 data "template_file" "network-config" {
   template = file("${path.module}/network_config.cfg")
 }
 
 resource "libvirt_cloudinit_disk" "node-inits" {
   name           = "${var.name-prefix}-${count.index}-init"
-  user_data      = element(data.template_file.node-user-datas.*.rendered, count.index)
+  user_data      = element(var.user-datas.*.rendered, count.index)
   network_config = data.template_file.network-config.rendered
   pool           = var.pool-name
   count          = var.num-nodes
 }
 
 resource "libvirt_domain" "nodes" {
-  count = var.num-nodes
-  name  = "${var.name-prefix}-${count.index}"
+  count  = var.num-nodes
+  name   = "${var.name-prefix}-${count.index}"
   memory = var.node-memory
   vcpu   = var.node-vcpus
 

modules/libvirt-nodes/variables.tf

@@ -24,6 +24,10 @@ variable "node-vcpus" {
   type        = number
 }
 
+variable "user-datas" {
+  description = "A list of cloud-init configs that get applied to their corresponding node."
+}
+
 variable "num-nodes" {
   description = "The number of nodes to create with this config."
 }