monitor systemd --failed

bundles/icinga2/files/hosts.d/host.conf

@@ -14,7 +14,8 @@
             if key.endswith('_interval'):
                 return value
             else:
-                return f'"{value}"'
+                escaped_value = value.replace('$', '$$').replace('"', '\\"')
+                return f'"{escaped_value}"'
         elif isinstance(value, (list, set)):
             return '[' + ', '.join(render_value(e) for e in sorted(value)) + ']'
         else:

bundles/systemd/metadata.py

@@ -3,7 +3,14 @@ defaults = {
         'units': {},
         'services': {},
         'logind': {},
-    }
+    },
+    'monitoring': {
+        'services': {
+            'systemd': {
+                'vars.command': "systemctl --failed --no-legend | wc -l | grep -q '^0$' && exit 0 || systemctl --failed && exit 2",
+            },
+        },
+    },
 }
 
 @metadata_reactor.provides(