From 9b7375e42472e49582bc58da31c14d0dc62559db Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Wa=C3=ABl=20Ammar?= <wael@arkops.io>
Date: Sat, 29 Jan 2022 21:15:23 +0100
Subject: [PATCH] Add Hetzner placement group and link servers to it

---
 agents.tf  | 13 +++++++------
 main.tf    | 10 ++++++++++
 master.tf  | 13 +++++++------
 servers.tf | 13 +++++++------
 4 files changed, 31 insertions(+), 18 deletions(-)

diff --git a/agents.tf b/agents.tf
index 3ec7d14..f128556 100644
--- a/agents.tf
+++ b/agents.tf
@@ -2,12 +2,13 @@ resource "hcloud_server" "agents" {
   count = var.agents_num
   name  = "k3s-agent-${count.index}"
 
-  image        = data.hcloud_image.linux.name
-  rescue       = "linux64"
-  server_type  = var.agent_server_type
-  location     = var.location
-  ssh_keys     = [hcloud_ssh_key.default.id]
-  firewall_ids = [hcloud_firewall.k3s.id]
+  image              = data.hcloud_image.linux.name
+  rescue             = "linux64"
+  server_type        = var.agent_server_type
+  location           = var.location
+  ssh_keys           = [hcloud_ssh_key.default.id]
+  firewall_ids       = [hcloud_firewall.k3s.id]
+  placement_group_id = hcloud_placement_group.k3s_placement_group.id
 
 
   labels = {
diff --git a/main.tf b/main.tf
index ed3591e..7e31d1d 100644
--- a/main.tf
+++ b/main.tf
@@ -174,3 +174,13 @@ resource "local_file" "traefik_config" {
   file_permission      = "0644"
   directory_permission = "0755"
 }
+
+
+resource "hcloud_placement_group" "k3s_placement_group" {
+  name = "k3s-placement-group"
+  type = "spread"
+  labels = {
+    "provisioner" = "terraform",
+    "engine"      = "k3s"
+  }
+}
diff --git a/master.tf b/master.tf
index 561e1ab..506e5bd 100644
--- a/master.tf
+++ b/master.tf
@@ -1,12 +1,13 @@
 resource "hcloud_server" "first_control_plane" {
   name = "k3s-control-plane-0"
 
-  image        = data.hcloud_image.linux.name
-  rescue       = "linux64"
-  server_type  = var.control_plane_server_type
-  location     = var.location
-  ssh_keys     = [hcloud_ssh_key.default.id]
-  firewall_ids = [hcloud_firewall.k3s.id]
+  image              = data.hcloud_image.linux.name
+  rescue             = "linux64"
+  server_type        = var.control_plane_server_type
+  location           = var.location
+  ssh_keys           = [hcloud_ssh_key.default.id]
+  firewall_ids       = [hcloud_firewall.k3s.id]
+  placement_group_id = hcloud_placement_group.k3s_placement_group.id
 
   labels = {
     "provisioner" = "terraform",
diff --git a/servers.tf b/servers.tf
index ba31ff3..2e4ef39 100644
--- a/servers.tf
+++ b/servers.tf
@@ -2,12 +2,13 @@ resource "hcloud_server" "control_planes" {
   count = var.servers_num - 1
   name  = "k3s-control-plane-${count.index + 1}"
 
-  image        = data.hcloud_image.linux.name
-  rescue       = "linux64"
-  server_type  = var.control_plane_server_type
-  location     = var.location
-  ssh_keys     = [hcloud_ssh_key.default.id]
-  firewall_ids = [hcloud_firewall.k3s.id]
+  image              = data.hcloud_image.linux.name
+  rescue             = "linux64"
+  server_type        = var.control_plane_server_type
+  location           = var.location
+  ssh_keys           = [hcloud_ssh_key.default.id]
+  firewall_ids       = [hcloud_firewall.k3s.id]
+  placement_group_id = hcloud_placement_group.k3s_placement_group.id
 
   labels = {
     "provisioner" = "terraform",