fix(icinga-topflap-services): ignore events with "Waiting for Icinga DB to synchronize the config." to prevent UNKNOWNs

Author: NavidSassan

CHANGELOG.md

@@ -28,6 +28,7 @@ Build, CI/CD:
 Monitoring Plugins:
 
 * by-ssh: fix traceback on "permission denied"
+* icinga-topflap-services: ignore events with "Waiting for Icinga DB to synchronize the config." to prevent UNKNOWNs
 * needs-restarting: add missung import of lib.disk
 * ping: '10 received' contains '0 received' ([#860](https://github.com/Linuxfabrik/monitoring-plugins/issues/860))
 * snmp: Special characters not supported in options --v3-auth-prot-password and --v3-priv-prot-password ([#886](https://github.com/Linuxfabrik/monitoring-plugins/issues/886))

check-plugins/icinga-topflap-services/icinga-topflap-services

@@ -29,7 +29,7 @@ from lib.globals import (STATE_CRIT, STATE_OK,  # pylint: disable=C0413
                           STATE_UNKNOWN, STATE_WARN)
 
 __author__ = 'Linuxfabrik GmbH, Zurich/Switzerland'
-__version__ = '2025041701'
+__version__ = '2025051601'
 
 DESCRIPTION = """This check plugin counts the number of state changes per service within a
                  given lookback interval. This makes it possible to detect fast flapping services.
@@ -244,12 +244,14 @@ def main():
         if abs(now - data['state_event_time']) > args.LOOKBACK:
             continue
 
-        # ignore myself
         data['service_display_name'] = event.get('service').get('display_name')
-        if not data['service_display_name']:
+        # ignore events with "Waiting for Icinga DB to synchronize the config."
+        if data['service_display_name'] is None:
             continue
+
+        # ignore myself
         if 'top' in data['service_display_name'].lower() and \
-        'flap' in data['service_display_name'].lower():
+            'flap' in data['service_display_name'].lower():
             continue
 
         data['host_id'] = event.get('host').get('id')