nodes/doc.lon1.icinga2: use zfs for data volume

nodes/doc/lon1/icinga2.py

@@ -1,12 +1,14 @@
 nodes['doc.lon1.icinga2'] = {
-    'bundles': set(),
+    'bundles': {
+        'zfs',
+    },
     'groups': {
         'webserver',
     },
     'metadata': {
         'apt': {
            'repos': {
-                'buster-backports': {
+                'backports': {
                     'install_gpg_key': False, # default debian signing key
                     'items': [
                         'deb http://deb.debian.org/debian buster-backports main',
@@ -19,7 +21,17 @@ nodes['doc.lon1.icinga2'] = {
                 'icinga.franzi.business': {},
             },
         },
-        'os': 'debian',
-        'os_release': 'buster',
+        'zfs': {
+            'pools': {
+                'tank': {
+                    'device': '/dev/disk/by-id/scsi-0DO_Volume_volume-lon1-01-part1',
                 },
+            },
+            'module_options': {
+                'zfs_arc_max_mb': 0,
+            },
+        },
+    },
+    'os': 'debian',
+    'os_version': (10, 5),
 }