From a42653b370ac3cda428b6f134f90ed6acba6ae74 Mon Sep 17 00:00:00 2001
From: MichaelFisher1997 <contact@michaelfisher.tech>
Date: Sat, 28 Feb 2026 21:54:49 +0000
Subject: [PATCH] fix: Use eu-central network zone, handle existing SSH key

---
 terraform/network.tf |  2 +-
 terraform/servers.tf |  4 ++--
 terraform/ssh.tf     | 14 ++++++++++++++
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/terraform/network.tf b/terraform/network.tf
index 08e2e9a..1f49d09 100644
--- a/terraform/network.tf
+++ b/terraform/network.tf
@@ -6,6 +6,6 @@ resource "hcloud_network" "cluster" {
 resource "hcloud_network_subnet" "servers" {
   network_id   = hcloud_network.cluster.id
   type         = "cloud"
-  network_zone = "${var.location}-network"
+  network_zone = "eu-central"
   ip_range     = var.subnet_cidr
 }
diff --git a/terraform/servers.tf b/terraform/servers.tf
index e4f5535..5b72730 100644
--- a/terraform/servers.tf
+++ b/terraform/servers.tf
@@ -10,7 +10,7 @@ resource "hcloud_server" "control_plane" {
   server_type = var.control_plane_type
   image       = data.hcloud_image.ubuntu.id
   location    = var.location
-  ssh_keys    = [hcloud_ssh_key.cluster.id]
+  ssh_keys    = [data.hcloud_ssh_key.cluster.id]
 
   labels = {
     cluster = var.cluster_name
@@ -37,7 +37,7 @@ resource "hcloud_server" "workers" {
   server_type = var.worker_type
   image       = data.hcloud_image.ubuntu.id
   location    = var.location
-  ssh_keys    = [hcloud_ssh_key.cluster.id]
+  ssh_keys    = [data.hcloud_ssh_key.cluster.id]
 
   labels = {
     cluster = var.cluster_name
diff --git a/terraform/ssh.tf b/terraform/ssh.tf
index 7041784..4e9c475 100644
--- a/terraform/ssh.tf
+++ b/terraform/ssh.tf
@@ -2,7 +2,21 @@ data "local_file" "ssh_public_key" {
   filename = pathexpand(var.ssh_public_key)
 }
 
+data "hcloud_ssh_keys" "all_keys" {}
+
+locals {
+  existing_key = try([
+    for key in data.hcloud_ssh_keys.all_keys.ssh_keys :
+    key if key.name == "${var.cluster_name}-ssh-key"
+  ][0], null)
+}
+
 resource "hcloud_ssh_key" "cluster" {
+  count      = local.existing_key == null ? 1 : 0
   name       = "${var.cluster_name}-ssh-key"
   public_key = data.local_file.ssh_public_key.content
 }
+
+data "hcloud_ssh_key" "cluster" {
+  fingerprint = local.existing_key != null ? local.existing_key.fingerprint : hcloud_ssh_key.cluster[0].fingerprint
+}