feat: Add certificate volume to each manager node

terraform/modules/docker-network/swarm-manager-node.tf

@@ -42,6 +42,26 @@ resource "hcloud_server_network" "nginx_private" {
   ip        = var.private_node_ips[count.index]
 }
 
+resource "hcloud_volume" "certificates" {
+  name = format("%s_%s_%s", "docker", var.stage_name, "certificates")
+  location = element(var.locations.*.name, 0)
+  size = 10
+  labels = {
+    "docker" : "yes",
+    "swarm" : "yes",
+    "certificates" : "yes"
+  }
+  format = "ext4"
+}
+
+resource "hcloud_volume_attachment" "certificates" {
+  count = var.number_nodes
+
+  server_id = hcloud_server.node[count.index].id
+  volume_id = hcloud_volume.certificates.id
+  automount = true
+}
+
 resource "hcloud_server" "node" {
   count = var.number_nodes
 
@@ -93,7 +113,9 @@ resource "hcloud_server" "node" {
       main_node : count.index == 0
       main_node_private_ip : var.private_node_ips[0]
     }))
-    certbot_setup : base64encode(file("${path.module}/templates/scripts/certbot-setup.sh"))
+    certificate_setup : base64encode(templatefile("${path.module}/templates/scripts/certificate-setup.sh", {
+      volume_id : hcloud_volume.certificates.id
+    }))
   })
 
   network {

terraform/modules/docker-network/templates/cloud-init-manager-node.yaml.tftpl

@@ -42,8 +42,8 @@ write_files:
     encoding: base64
     defer: true
   - owner: root:root
-    content: "${certbot_setup}"
+    content: "${certificate_setup}"
-    path: /run/tmpfiles.d/certbot-setup.sh
+    path: /run/tmpfiles.d/certificate-setup.sh
     encoding: base64
     defer: true
 %{ if main_node ~}
@@ -55,11 +55,11 @@ write_files:
 %{ endif ~}
 runcmd:
   - install /run/tmpfiles.d/*.sh /usr/local/bin
+  - /usr/local/bin/certificate-setup.sh
   - /usr/local/bin/install-packages.sh
   - /usr/local/bin/firewall-setup.sh
   - /usr/local/bin/ssh-setup.sh
   - /usr/local/bin/sysctl-setup.sh
-  - /usr/local/bin/certbot-setup.sh
 %{ if main_node ~}
   - /usr/local/bin/swarm-setup.sh
 %{ endif ~}

terraform/modules/docker-network/templates/scripts/certbot-setup.sh

@@ -1,3 +0,0 @@
-#!/bin/bash
-
-mkdir -p /var/www/certbot

terraform/modules/docker-network/templates/scripts/certificate-setup.sh.tftpl

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+mkdir -p /var/www/certbot
+ln -s /mnt/HC_Volume_${volume_id} /etc/letsencrypt