bundles/icinga2: add automatic downtime for upgrade-and-reboot

bundles/icinga2/files/icinga2/downtimes.conf

@@ -0,0 +1,18 @@
+% for monitored_node in sorted(monitored_nodes):
+%   if not monitored_node.dummy:
+object ScheduledDowntime "unattended_upgrades" {
+  host_name = "${monitored_node.name}"
+
+  author = "upgrade-and-reboot"
+  comment = "Downtime for upgrade-and-reboot"
+
+  fixed = true
+
+  ranges = {
+      "${days[monitored_node.metadata.get('apt', {}).get('unattended_upgrades', {}).get('day', 5)]}" = "01:${monitored_node.magic_number%30}-01:${(monitored_node.magic_number%30)+30}"
+  }
+
+  child_options = "DowntimeTriggeredChildren"
+}
+%   endif
+% endfor

bundles/icinga2/items.py

@@ -17,6 +17,17 @@ SLA_INFO = {
     'never': 'never',
 }
 
+DAYS_TO_STRING = [
+    'sunday',
+    'monday',
+    'tuesday',
+    'wednesday',
+    'thursday',
+    'friday',
+    'saturday',
+    'sunday',
+]
+
 directories = {
     '/etc/icingaweb2': {
         'group': 'icingaweb2',
@@ -316,3 +327,17 @@ files['/etc/icinga2/conf.d/groups.conf'] = {
         'svc_systemd:icinga2:restart',
     },
 }
+files['/etc/icinga2/conf.d/downtimes.conf'] = {
+    'source': 'icinga2/downtimes.conf',
+    'content_type': 'mako',
+    'context': {
+        'monitored_nodes': monitored_nodes,
+        'days': DAYS_TO_STRING,
+    },
+    'needs': {
+        'pkg_apt:icinga2',
+    },
+    'triggers': {
+        'svc_systemd:icinga2:restart',
+    },
+}