Added override variable, additional server groups and cloudinit config (#9452)

contrib/terraform/openstack/README.md

@@ -88,7 +88,7 @@ binaries available on hyperkube v1.4.3_coreos.0 or higher.
 
 ## Requirements
 
-- [Install Terraform](https://www.terraform.io/intro/getting-started/install.html) 0.12 or later
+- [Install Terraform](https://www.terraform.io/intro/getting-started/install.html) 0.14 or later
 - [Install Ansible](http://docs.ansible.com/ansible/latest/intro_installation.html)
 - you already have a suitable OS image in Glance
 - you already have a floating IP pool created
@@ -284,6 +284,7 @@ For your cluster, edit `inventory/$CLUSTER/cluster.tfvars`.
 |`master_server_group_policy` | Enable and use openstack nova servergroups for masters with set policy, default: "" (disabled) |
 |`node_server_group_policy` | Enable and use openstack nova servergroups for nodes with set policy, default: "" (disabled) |
 |`etcd_server_group_policy` | Enable and use openstack nova servergroups for etcd with set policy, default: "" (disabled) |
+|`additional_server_groups` | Extra server groups to create. Set "policy" to the policy for the group, expected format is `{"new-server-group" = {"policy" = "anti-affinity"}}`, default: {} (to not create any extra groups) |
 |`use_access_ip` | If 1, nodes with floating IPs will transmit internal cluster traffic via floating IPs; if 0 private IPs will be used instead. Default value is 1. |
 |`port_security_enabled` | Allow to disable port security by setting this to `false`. `true` by default |
 |`force_null_port_security` | Set `null` instead of `true` or `false` for `port_security`. `false` by default |
@@ -292,12 +293,33 @@ For your cluster, edit `inventory/$CLUSTER/cluster.tfvars`.
 
 ##### k8s_nodes
 
-Allows a custom definition of worker nodes giving the operator full control over individual node flavor and
-availability zone placement. To enable the use of this mode set the `number_of_k8s_nodes` and
-`number_of_k8s_nodes_no_floating_ip` variables to 0. Then define your desired worker node configuration
-using the `k8s_nodes` variable. The `az`, `flavor` and `floating_ip` parameters are mandatory.
+Allows a custom definition of worker nodes giving the operator full control over individual node flavor and availability zone placement.
+To enable the use of this mode set the `number_of_k8s_nodes` and `number_of_k8s_nodes_no_floating_ip` variables to 0.
+Then define your desired worker node configuration using the `k8s_nodes` variable.
+The `az`, `flavor` and `floating_ip` parameters are mandatory.
 The optional parameter `extra_groups` (a comma-delimited string) can be used to define extra inventory group memberships for specific nodes.
 
+```yaml
+k8s_nodes:
+   node-name:
+    az: string # Name of the AZ
+    flavor: string # Flavor ID to use
+    floating_ip: bool # If floating IPs should be created or not
+    extra_groups: string # (optional) Additional groups to add for kubespray, defaults to no groups
+    image_id: string # (optional) Image ID to use, defaults to var.image_id or var.image
+    root_volume_size_in_gb: number # (optional) Size of the block storage to use as root disk, defaults to var.node_root_volume_size_in_gb or to use volume from flavor otherwise
+    volume_type: string # (optional) Volume type to use, defaults to var.node_volume_type
+    network_id: string # (optional) Use this network_id for the node, defaults to either var.network_id or ID of var.network_name
+    server_group: string # (optional) Server group to add this node to. If set, this has to be one specified in additional_server_groups, defaults to use the server group specified in node_server_group_policy
+    cloudinit: # (optional) Options for cloud-init
+      extra_partitions: # List of extra partitions (other than the root partition) to setup during creation
+        volume_path: string # Path to the volume to create partition for (e.g. /dev/vda )
+        partition_path: string # Path to the partition (e.g. /dev/vda2 )
+        mount_path: string # Path to where the partition should be mounted
+        partition_start: string # Where the partition should start (e.g. 10GB ). Note, if you set the partition_start to 0 there will be no space left for the root partition
+        partition_end: string # Where the partition should end (e.g. 10GB or -1 for end of volume)
+```
+
 For example:
 
 ```ini
@@ -427,7 +449,7 @@ This should finish fairly quickly telling you Terraform has successfully initial
 
 You can apply cloud-init based customization for the openstack instances before provisioning your cluster.
 One common template is used for all instances. Adjust the file shown below:
-`contrib/terraform/openstack/modules/compute/templates/cloudinit.yaml`
+`contrib/terraform/openstack/modules/compute/templates/cloudinit.yaml.tmpl`
 For example, to enable openstack novnc access and ansible_user=root SSH access:
 
 ```ShellSession

contrib/terraform/openstack/kubespray.tf

@@ -98,6 +98,7 @@ module "compute" {
   network_id                                   = module.network.network_id
   use_existing_network                         = var.use_existing_network
   private_subnet_id                            = module.network.subnet_id
+  additional_server_groups                     = var.additional_server_groups
 
   depends_on = [
     module.network.subnet_id

contrib/terraform/openstack/modules/compute/main.tf

@@ -18,7 +18,10 @@ data "openstack_images_image_v2" "image_master" {
 data "cloudinit_config" "cloudinit" {
   part {
     content_type =  "text/cloud-config"
-    content = file("${path.module}/templates/cloudinit.yaml")
+    content = templatefile("${path.module}/templates/cloudinit.yaml.tmpl", {
+      # template_file doesn't support lists
+      extra_partitions = ""
+    })
   }
 }
 
@@ -170,6 +173,12 @@ resource "openstack_compute_servergroup_v2" "k8s_etcd" {
   policies = [var.etcd_server_group_policy]
 }
 
+resource "openstack_compute_servergroup_v2" "k8s_node_additional" {
+  for_each = var.additional_server_groups
+  name     = "k8s-${each.key}-srvgrp"
+  policies = [each.value.policy]
+}
+
 locals {
 # master groups
   master_sec_groups = compact([
@@ -199,6 +208,29 @@ locals {
   image_to_use_gfs = var.image_gfs_uuid != "" ? var.image_gfs_uuid : var.image_uuid != "" ? var.image_uuid : data.openstack_images_image_v2.gfs_image[0].id
 # image_master uuidimage_gfs_uuid
   image_to_use_master = var.image_master_uuid != "" ? var.image_master_uuid : var.image_uuid != "" ? var.image_uuid : data.openstack_images_image_v2.image_master[0].id
+
+  k8s_nodes_settings = {
+    for name, node in var.k8s_nodes :
+      name => {
+        "use_local_disk" = (node.root_volume_size_in_gb != null ? node.root_volume_size_in_gb : var.node_root_volume_size_in_gb) == 0,
+        "image_id"       = node.image_id != null ? node.image_id : local.image_to_use_node,
+        "volume_size"    = node.root_volume_size_in_gb != null ? node.root_volume_size_in_gb : var.node_root_volume_size_in_gb,
+        "volume_type"    = node.volume_type != null ? node.volume_type : var.node_volume_type,
+        "network_id"     = node.network_id != null ? node.network_id : (var.use_existing_network ? data.openstack_networking_network_v2.k8s_network[0].id : var.network_id)
+        "server_group"   = node.server_group != null ? [openstack_compute_servergroup_v2.k8s_node_additional[node.server_group].id] : (var.node_server_group_policy != ""  ? [openstack_compute_servergroup_v2.k8s_node[0].id] : [])
+      }
+  }
+
+  k8s_masters_settings = {
+    for name, node in var.k8s_masters :
+      name => {
+        "use_local_disk" = (node.root_volume_size_in_gb != null ? node.root_volume_size_in_gb : var.master_root_volume_size_in_gb) == 0,
+        "image_id"       = node.image_id != null ? node.image_id : local.image_to_use_master,
+        "volume_size"    = node.root_volume_size_in_gb != null ? node.root_volume_size_in_gb : var.master_root_volume_size_in_gb,
+        "volume_type"    = node.volume_type != null ? node.volume_type : var.master_volume_type,
+        "network_id"     = node.network_id != null ? node.network_id : (var.use_existing_network ? data.openstack_networking_network_v2.k8s_network[0].id : var.network_id)
+      }
+  }
 }
 
 resource "openstack_networking_port_v2" "bastion_port" {
@@ -209,8 +241,11 @@ resource "openstack_networking_port_v2" "bastion_port" {
   port_security_enabled = var.force_null_port_security ? null : var.port_security_enabled
   security_group_ids    = var.port_security_enabled ? local.bastion_sec_groups : null
   no_security_groups    = var.port_security_enabled ? null : false
-  fixed_ip {
-    subnet_id = var.private_subnet_id
+  dynamic "fixed_ip" {
+    for_each = var.private_subnet_id == "" ? [] : [true]
+    content {
+      subnet_id = var.private_subnet_id
+    }
   }
 
   depends_on = [
@@ -262,8 +297,11 @@ resource "openstack_networking_port_v2" "k8s_master_port" {
   port_security_enabled = var.force_null_port_security ? null : var.port_security_enabled
   security_group_ids    = var.port_security_enabled ? local.master_sec_groups : null
   no_security_groups    = var.port_security_enabled ? null : false
-  fixed_ip {
-    subnet_id = var.private_subnet_id
+  dynamic "fixed_ip" {
+    for_each = var.private_subnet_id == "" ? [] : [true]
+    content {
+      subnet_id = var.private_subnet_id
+    }
   }
 
   depends_on = [
@@ -320,13 +358,16 @@ resource "openstack_compute_instance_v2" "k8s_master" {
 resource "openstack_networking_port_v2" "k8s_masters_port" {
   for_each              = var.number_of_k8s_masters == 0 && var.number_of_k8s_masters_no_etcd == 0 && var.number_of_k8s_masters_no_floating_ip == 0 && var.number_of_k8s_masters_no_floating_ip_no_etcd == 0 ? var.k8s_masters : {}
   name                  = "${var.cluster_name}-k8s-${each.key}"
-  network_id            = var.use_existing_network ? data.openstack_networking_network_v2.k8s_network[0].id : var.network_id
+  network_id            = local.k8s_masters_settings[each.key].network_id
   admin_state_up        = "true"
   port_security_enabled = var.force_null_port_security ? null : var.port_security_enabled
   security_group_ids    = var.port_security_enabled ? local.master_sec_groups : null
   no_security_groups    = var.port_security_enabled ? null : false
-  fixed_ip {
-    subnet_id = var.private_subnet_id
+  dynamic "fixed_ip" {
+    for_each = var.private_subnet_id == "" ? [] : [true]
+    content {
+      subnet_id = var.private_subnet_id
+    }
   }
 
   depends_on = [
@@ -338,17 +379,17 @@ resource "openstack_compute_instance_v2" "k8s_masters" {
   for_each          = var.number_of_k8s_masters == 0 && var.number_of_k8s_masters_no_etcd == 0 && var.number_of_k8s_masters_no_floating_ip == 0 && var.number_of_k8s_masters_no_floating_ip_no_etcd == 0 ? var.k8s_masters : {}
   name              = "${var.cluster_name}-k8s-${each.key}"
   availability_zone = each.value.az
-  image_id          = var.master_root_volume_size_in_gb == 0 ? local.image_to_use_master : null
+  image_id          = local.k8s_masters_settings[each.key].use_local_disk ? local.k8s_masters_settings[each.key].image_id : null
   flavor_id         = each.value.flavor
   key_pair          = openstack_compute_keypair_v2.k8s.name
 
   dynamic "block_device" {
-    for_each = var.master_root_volume_size_in_gb > 0 ? [local.image_to_use_master] : []
+    for_each = !local.k8s_masters_settings[each.key].use_local_disk ? [local.k8s_masters_settings[each.key].image_id] : []
     content {
-      uuid                  = local.image_to_use_master
+      uuid                  = block_device.value
       source_type           = "image"
-      volume_size           = var.master_root_volume_size_in_gb
-      volume_type           = var.master_volume_type
+      volume_size           = local.k8s_masters_settings[each.key].volume_size
+      volume_type           = local.k8s_masters_settings[each.key].volume_type
       boot_index            = 0
       destination_type      = "volume"
       delete_on_termination = true
@@ -374,7 +415,7 @@ resource "openstack_compute_instance_v2" "k8s_masters" {
   }
 
   provisioner "local-exec" {
-    command = "%{if each.value.floating_ip}sed s/USER/${var.ssh_user}/ ${path.root}/ansible_bastion_template.txt | sed s/BASTION_ADDRESS/${element(concat(var.bastion_fips, [for key, value in var.k8s_masters_fips : value.address]), 0)}/ > ${var.group_vars_path}/no_floating.yml%{else}true%{endif}"
+    command = "%{if each.value.floating_ip}sed s/USER/${var.ssh_user}/ ${path.module}/ansible_bastion_template.txt | sed s/BASTION_ADDRESS/${element(concat(var.bastion_fips, [for key, value in var.k8s_masters_fips : value.address]), 0)}/ > ${var.group_vars_path}/no_floating.yml%{else}true%{endif}"
   }
 }
 
@@ -386,8 +427,11 @@ resource "openstack_networking_port_v2" "k8s_master_no_etcd_port" {
   port_security_enabled = var.force_null_port_security ? null : var.port_security_enabled
   security_group_ids    = var.port_security_enabled ? local.master_sec_groups : null
   no_security_groups    = var.port_security_enabled ? null : false
-  fixed_ip {
-    subnet_id = var.private_subnet_id
+  dynamic "fixed_ip" {
+    for_each = var.private_subnet_id == "" ? [] : [true]
+    content {
+      subnet_id = var.private_subnet_id
+    }
   }
 
   depends_on = [
@@ -449,8 +493,11 @@ resource "openstack_networking_port_v2" "etcd_port" {
   port_security_enabled = var.force_null_port_security ? null : var.port_security_enabled
   security_group_ids    = var.port_security_enabled ? local.etcd_sec_groups : null
   no_security_groups    = var.port_security_enabled ? null : false
-  fixed_ip {
-    subnet_id = var.private_subnet_id
+  dynamic "fixed_ip" {
+    for_each = var.private_subnet_id == "" ? [] : [true]
+    content {
+      subnet_id = var.private_subnet_id
+    }
   }
 
   depends_on = [
@@ -506,8 +553,11 @@ resource "openstack_networking_port_v2" "k8s_master_no_floating_ip_port" {
   port_security_enabled = var.force_null_port_security ? null : var.port_security_enabled
   security_group_ids    = var.port_security_enabled ? local.master_sec_groups : null
   no_security_groups    = var.port_security_enabled ? null : false
-  fixed_ip {
-    subnet_id = var.private_subnet_id
+  dynamic "fixed_ip" {
+    for_each = var.private_subnet_id == "" ? [] : [true]
+    content {
+      subnet_id = var.private_subnet_id
+    }
   }
 
   depends_on = [
@@ -563,8 +613,11 @@ resource "openstack_networking_port_v2" "k8s_master_no_floating_ip_no_etcd_port"
   port_security_enabled = var.force_null_port_security ? null : var.port_security_enabled
   security_group_ids    = var.port_security_enabled ? local.master_sec_groups : null
   no_security_groups    = var.port_security_enabled ? null : false
-  fixed_ip {
-    subnet_id = var.private_subnet_id
+  dynamic "fixed_ip" {
+    for_each = var.private_subnet_id == "" ? [] : [true]
+    content {
+      subnet_id = var.private_subnet_id
+    }
   }
 
   depends_on = [
@@ -621,8 +674,11 @@ resource "openstack_networking_port_v2" "k8s_node_port" {
   port_security_enabled = var.force_null_port_security ? null : var.port_security_enabled
   security_group_ids    = var.port_security_enabled ? local.worker_sec_groups : null
   no_security_groups    = var.port_security_enabled ? null : false
-  fixed_ip {
-    subnet_id = var.private_subnet_id
+  dynamic "fixed_ip" {
+    for_each = var.private_subnet_id == "" ? [] : [true]
+    content {
+      subnet_id = var.private_subnet_id
+    }
   }
 
   depends_on = [
@@ -684,8 +740,11 @@ resource "openstack_networking_port_v2" "k8s_node_no_floating_ip_port" {
   port_security_enabled = var.force_null_port_security ? null : var.port_security_enabled
   security_group_ids    = var.port_security_enabled ? local.worker_sec_groups : null
   no_security_groups    = var.port_security_enabled ? null : false
-  fixed_ip {
-    subnet_id = var.private_subnet_id
+  dynamic "fixed_ip" {
+    for_each = var.private_subnet_id == "" ? [] : [true]
+    content {
+      subnet_id = var.private_subnet_id
+    }
   }
 
   depends_on = [
@@ -720,9 +779,9 @@ resource "openstack_compute_instance_v2" "k8s_node_no_floating_ip" {
   }
 
   dynamic "scheduler_hints" {
-    for_each = var.node_server_group_policy != "" ? [openstack_compute_servergroup_v2.k8s_node[0]] : []
+    for_each = var.node_server_group_policy != "" ? [openstack_compute_servergroup_v2.k8s_node[0].id] : []
     content {
-      group = openstack_compute_servergroup_v2.k8s_node[0].id
+      group = scheduler_hints.value
     }
   }
 
@@ -737,13 +796,16 @@ resource "openstack_compute_instance_v2" "k8s_node_no_floating_ip" {
 resource "openstack_networking_port_v2" "k8s_nodes_port" {
   for_each              = var.number_of_k8s_nodes == 0 && var.number_of_k8s_nodes_no_floating_ip == 0 ? var.k8s_nodes : {}
   name                  = "${var.cluster_name}-k8s-node-${each.key}"
-  network_id            = var.use_existing_network ? data.openstack_networking_network_v2.k8s_network[0].id : var.network_id
+  network_id            = local.k8s_nodes_settings[each.key].network_id
   admin_state_up        = "true"
   port_security_enabled = var.force_null_port_security ? null : var.port_security_enabled
   security_group_ids    = var.port_security_enabled ? local.worker_sec_groups : null
   no_security_groups    = var.port_security_enabled ? null : false
-  fixed_ip {
-    subnet_id = var.private_subnet_id
+  dynamic "fixed_ip" {
+    for_each = var.private_subnet_id == "" ? [] : [true]
+    content {
+      subnet_id = var.private_subnet_id
+    }
   }
 
   depends_on = [
@@ -755,18 +817,20 @@ resource "openstack_compute_instance_v2" "k8s_nodes" {
   for_each          = var.number_of_k8s_nodes == 0 && var.number_of_k8s_nodes_no_floating_ip == 0 ? var.k8s_nodes : {}
   name              = "${var.cluster_name}-k8s-node-${each.key}"
   availability_zone = each.value.az
-  image_id          = var.node_root_volume_size_in_gb == 0 ? local.image_to_use_node : null
+  image_id          = local.k8s_nodes_settings[each.key].use_local_disk ? local.k8s_nodes_settings[each.key].image_id : null
   flavor_id         = each.value.flavor
   key_pair          = openstack_compute_keypair_v2.k8s.name
-  user_data         = data.cloudinit_config.cloudinit.rendered
+  user_data         = each.value.cloudinit != null ? templatefile("${path.module}/templates/cloudinit.yaml.tmpl", {
+    extra_partitions = each.value.cloudinit.extra_partitions
+  }) : data.cloudinit_config.cloudinit.rendered
 
   dynamic "block_device" {
-    for_each = var.node_root_volume_size_in_gb > 0 ? [local.image_to_use_node] : []
+    for_each = !local.k8s_nodes_settings[each.key].use_local_disk ? [local.k8s_nodes_settings[each.key].image_id] : []
     content {
-      uuid                  = local.image_to_use_node
+      uuid                  = block_device.value
       source_type           = "image"
-      volume_size           = var.node_root_volume_size_in_gb
-      volume_type           = var.node_volume_type
+      volume_size           = local.k8s_nodes_settings[each.key].volume_size
+      volume_type           = local.k8s_nodes_settings[each.key].volume_type
       boot_index            = 0
       destination_type      = "volume"
       delete_on_termination = true
@@ -778,15 +842,15 @@ resource "openstack_compute_instance_v2" "k8s_nodes" {
   }
 
   dynamic "scheduler_hints" {
-    for_each = var.node_server_group_policy != "" ? [openstack_compute_servergroup_v2.k8s_node[0]] : []
+    for_each = local.k8s_nodes_settings[each.key].server_group
     content {
-      group = openstack_compute_servergroup_v2.k8s_node[0].id
+      group = scheduler_hints.value
     }
   }
 
   metadata = {
     ssh_user         = var.ssh_user
-    kubespray_groups = "kube_node,k8s_cluster,%{if each.value.floating_ip == false}no_floating,%{endif}${var.supplementary_node_groups},${try(each.value.extra_groups, "")}"
+    kubespray_groups = "kube_node,k8s_cluster,%{if each.value.floating_ip == false}no_floating,%{endif}${var.supplementary_node_groups}${each.value.extra_groups != null ? ",${each.value.extra_groups}" : ""}"
     depends_on       = var.network_router_id
     use_access_ip    = var.use_access_ip
   }
@@ -804,8 +868,11 @@ resource "openstack_networking_port_v2" "glusterfs_node_no_floating_ip_port" {
   port_security_enabled = var.force_null_port_security ? null : var.port_security_enabled
   security_group_ids    = var.port_security_enabled ? local.gfs_sec_groups : null
   no_security_groups    = var.port_security_enabled ? null : false
-  fixed_ip {
-    subnet_id = var.private_subnet_id
+  dynamic "fixed_ip" {
+    for_each = var.private_subnet_id == "" ? [] : [true]
+    content {
+      subnet_id = var.private_subnet_id
+    }
   }
 
   depends_on = [

contrib/terraform/openstack/modules/compute/templates/cloudinit.yaml

@@ -1,17 +0,0 @@
-# yamllint disable rule:comments
-#cloud-config
-## in some cases novnc console access is required
-## it requires ssh password to be set
-#ssh_pwauth: yes
-#chpasswd:
-#  list: |
-#    root:secret
-#  expire: False
-
-## in some cases direct root ssh access via ssh key is required
-#disable_root: false
-
-## in some cases additional CA certs are required
-#ca-certs:
-#  trusted: |
-#      -----BEGIN CERTIFICATE-----

contrib/terraform/openstack/modules/compute/templates/cloudinit.yaml.tmpl

@@ -0,0 +1,39 @@
+%{~ if length(extra_partitions) > 0 }
+#cloud-config
+bootcmd:
+%{~ for idx, partition in extra_partitions }
+- [ cloud-init-per, once, move-second-header, sgdisk, --move-second-header, ${partition.volume_path} ]
+- [ cloud-init-per, once, create-part-${idx}, parted, --script, ${partition.volume_path}, 'mkpart extended ext4 ${partition.partition_start} ${partition.partition_end}' ]
+- [ cloud-init-per, once, create-fs-part-${idx}, mkfs.ext4, ${partition.partition_path} ]
+%{~ endfor }
+
+runcmd:
+%{~ for idx, partition in extra_partitions }
+  - mkdir -p ${partition.mount_path}
+  - chown nobody:nogroup ${partition.mount_path}
+  - mount ${partition.partition_path} ${partition.mount_path}
+%{~ endfor }
+
+mounts:
+%{~ for idx, partition in extra_partitions }
+  - [ ${partition.partition_path}, ${partition.mount_path} ]
+%{~ endfor }
+%{~ else ~}
+# yamllint disable rule:comments
+#cloud-config
+## in some cases novnc console access is required
+## it requires ssh password to be set
+#ssh_pwauth: yes
+#chpasswd:
+#  list: |
+#    root:secret
+#  expire: False
+
+## in some cases direct root ssh access via ssh key is required
+#disable_root: false
+
+## in some cases additional CA certs are required
+#ca-certs:
+#  trusted: |
+#      -----BEGIN CERTIFICATE-----
+%{~ endif }

contrib/terraform/openstack/modules/compute/variables.tf

@@ -116,9 +116,48 @@ variable "k8s_allowed_egress_ips" {
   type = list
 }
 
-variable "k8s_masters" {}
-
-variable "k8s_nodes" {}
+variable "k8s_masters" {
+  type = map(object({
+    az                     = string
+    flavor                 = string
+    floating_ip            = bool
+    etcd                   = bool
+    image_id               = optional(string)
+    root_volume_size_in_gb = optional(number)
+    volume_type            = optional(string)
+    network_id             = optional(string)
+  }))
+}
+
+variable "k8s_nodes" {
+  type = map(object({
+    az                     = string
+    flavor                 = string
+    floating_ip            = bool
+    extra_groups           = optional(string)
+    image_id               = optional(string)
+    root_volume_size_in_gb = optional(number)
+    volume_type            = optional(string)
+    network_id             = optional(string)
+    additional_server_groups = optional(list(string))
+    server_group           = optional(string)
+    cloudinit              = optional(object({
+      extra_partitions = list(object({
+        volume_path     = string
+        partition_path  = string
+        partition_start = string
+        partition_end   = string
+        mount_path      = string
+      }))
+    }))
+  }))
+}
+
+variable "additional_server_groups" {
+  type = map(object({
+    policy = string
+  }))
+}
 
 variable "supplementary_master_groups" {
   default = ""

contrib/terraform/openstack/modules/compute/versions.tf

@@ -4,5 +4,6 @@ terraform {
       source = "terraform-provider-openstack/openstack"
     }
   }
-  required_version = ">= 0.12.26"
+  experiments = [module_variable_optional_attrs]
+  required_version = ">= 0.14.0"
 }

contrib/terraform/openstack/variables.tf

@@ -300,6 +300,13 @@ variable "k8s_nodes" {
   default = {}
 }
 
+variable "additional_server_groups" {
+  default = {}
+  type = map(object({
+    policy = string
+  }))
+}
+
 variable "extra_sec_groups" {
   default = false
 }

contrib/terraform/openstack/versions.tf

@@ -5,5 +5,6 @@ terraform {
       version = "~> 1.17"
     }
   }
-  required_version = ">= 0.12.26"
+  experiments      = [module_variable_optional_attrs]
+  required_version = ">= 0.14.0"
 }