Working block storage.

flatcar/cl.yaml

@@ -7,6 +7,16 @@ passwd:
         - ""
 systemd:
   units:
+    - name: appstorage.mount
+      enabled: true
+      contents: |
+        [Mount]
+        What=/dev/disk/by-label/appstorage
+        Where=/appstorage
+        Type=ext4
+
+        [Install]
+        RequiredBy=local-fs.target
     - name: app.service
       enabled: true
       contents_local: app/app.service
@@ -25,6 +35,10 @@ systemd:
             ExecStartPost=/usr/bin/sh -c "if ! cmp --silent /tmp/docker-compose /tmp/docker-compose-new; then touch /run/reboot-required; fi"
 
 storage:
+  filesystems:
+    - device: /dev/disk/by-label/appstorage
+      format: ext4
+      wipe_filesystem: false
   files:
     - path: /var/lb/caddy/Caddyfile
       contents:

main.tf

@@ -71,6 +71,16 @@ resource "digitalocean_reserved_ip" "machine" {
   region     = digitalocean_droplet.machine[each.key].region
 }
 
+resource "digitalocean_volume" "machine" {
+  for_each  = toset(var.machines)
+  region    = var.datacenter
+  name      = "${var.cluster_name}-${each.key}"
+  size                    = 30
+  initial_filesystem_type = "ext4"
+  initial_filesystem_label = "appstorage"
+  description             = "persistent storage for docker apps"
+}
+
 resource "digitalocean_droplet" "machine" {
   for_each  = toset(var.machines)
   name      = "${var.cluster_name}-${each.key}"
@@ -91,6 +101,12 @@ resource "digitalocean_reserved_ip_assignment" "machine" {
   droplet_id = digitalocean_droplet.machine[each.key].id
 }
 
+resource "digitalocean_volume_attachment" "machine" {
+  for_each  = toset(var.machines)
+  droplet_id = digitalocean_droplet.machine[each.key].id
+  volume_id  = digitalocean_volume.machine[each.key].id
+}
+
 # data "ct_config" "machine-ignitions" {
 #   for_each = toset(var.machines)
 #   content = templatefile("${path.module}/cl/machine-${each.key}.yaml.tmpl", {