From 4cc4718ce44e90548ed70a8467fd8d5a135bff9f Mon Sep 17 00:00:00 2001
From: Roman Hros <roman.hros@dnation.cloud>
Date: Fri, 14 Jun 2024 10:36:50 +0200
Subject: [PATCH] Add server metadata

Signed-off-by: Roman Hros <roman.hros@dnation.cloud>
---
 terraform/files/template/cluster-template.yaml |  2 ++
 terraform/files/template/clusterctl.yaml.tmpl  |  4 ++++
 terraform/mgmtcluster.tf                       |  4 +++-
 terraform/variables.tf                         | 12 ++++++++++++
 4 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/terraform/files/template/cluster-template.yaml b/terraform/files/template/cluster-template.yaml
index b0373d6e..37787162 100644
--- a/terraform/files/template/cluster-template.yaml
+++ b/terraform/files/template/cluster-template.yaml
@@ -320,6 +320,7 @@ spec:
   template:
     spec:
       flavor: ${OPENSTACK_CONTROL_PLANE_MACHINE_FLAVOR}
+      serverMetadata: ${OPENSTACK_CONTROL_PLANE_MACHINE_METADATA}
       serverGroupID: ${OPENSTACK_SRVGRP_CONTROLLER}
       image: ${OPENSTACK_IMAGE_NAME}
       sshKeyName: ${OPENSTACK_SSH_KEY_NAME}
@@ -345,6 +346,7 @@ spec:
         name: ${CLUSTER_NAME}-cloud-config
         kind: Secret
       flavor: ${OPENSTACK_NODE_MACHINE_FLAVOR}
+      serverMetadata: ${OPENSTACK_NODE_MACHINE_METADATA}
       serverGroupID: ${OPENSTACK_SRVGRP_WORKER}
       image: ${OPENSTACK_IMAGE_NAME}
       sshKeyName: ${OPENSTACK_SSH_KEY_NAME}
diff --git a/terraform/files/template/clusterctl.yaml.tmpl b/terraform/files/template/clusterctl.yaml.tmpl
index b38bfd7e..a28433ed 100644
--- a/terraform/files/template/clusterctl.yaml.tmpl
+++ b/terraform/files/template/clusterctl.yaml.tmpl
@@ -37,6 +37,10 @@ DEPLOY_FLUX: ${deploy_flux}
 # deploy metrics service
 DEPLOY_METRICS: ${deploy_metrics}
 
+# OpenStack instance additional metadata
+OPENSTACK_CONTROL_PLANE_MACHINE_METADATA: "{ %{ for metadata_key, metadata_value in controller_metadata ~} ${metadata_key}: ${metadata_value}, %{ endfor ~} }"
+OPENSTACK_NODE_MACHINE_METADATA: "{ %{ for metadata_key, metadata_value in worker_metadata ~} ${metadata_key}: ${metadata_value}, %{ endfor ~} }"
+
 # OpenStack flavors and machine count
 OPENSTACK_CONTROL_PLANE_MACHINE_FLAVOR: ${controller_flavor}
 CONTROL_PLANE_MACHINE_COUNT: ${controller_count}
diff --git a/terraform/mgmtcluster.tf b/terraform/mgmtcluster.tf
index 07ccef00..401e9916 100644
--- a/terraform/mgmtcluster.tf
+++ b/terraform/mgmtcluster.tf
@@ -318,6 +318,7 @@ resource "terraform_data" "mgmtcluster_bootstrap_files" {
       cloud_provider                 = var.cloud_provider,
       controller_count               = var.controller_count,
       controller_flavor              = var.controller_flavor,
+      controller_metadata            = var.controller_metadata,
       deploy_cert_manager            = var.deploy_cert_manager,
       deploy_cindercsi               = var.deploy_cindercsi,
       deploy_flux                    = var.deploy_flux,
@@ -340,7 +341,8 @@ resource "terraform_data" "mgmtcluster_bootstrap_files" {
       calico_version                 = var.calico_version,
       use_ovn_lb_provider            = var.use_ovn_lb_provider,
       worker_count                   = var.worker_count,
-      worker_flavor                  = var.worker_flavor
+      worker_flavor                  = var.worker_flavor,
+      worker_metadata                = var.worker_metadata
     })
     destination = "/home/${var.ssh_username}/cluster-defaults/clusterctl.yaml"
   }
diff --git a/terraform/variables.tf b/terraform/variables.tf
index c250d61a..882c1b02 100644
--- a/terraform/variables.tf
+++ b/terraform/variables.tf
@@ -33,6 +33,18 @@ variable "worker_flavor" {
   default     = "SCS-2V-4-20s"
 }
 
+variable "controller_metadata" {
+  description = "additional metadata for instances running the k8s management nodes"
+  type        = map(string)
+  default     = {}
+}
+
+variable "worker_metadata" {
+  description = "additional metadata for instances running the k8s worker nodes"
+  type        = map(string)
+  default     = {}
+}
+
 variable "availability_zone" {
   description = "availability zone for openstack resources"
   type        = string