If system health configuration file not exist, healthd should exit

src/system-health/health_checker/config.py

@@ -45,6 +45,9 @@ def __init__(self):
         self.ignore_devices = None
         self.user_defined_checkers = None
 
+    def config_file_exists(self):
+        return os.path.exists(self._config_file)
+
     def load_config(self):
         """
         Load the configuration file from disk.
@@ -53,7 +56,7 @@ def load_config(self):
             3. If there is any format issues in configuration file, current config entries will reset to default value
         :return:
         """
-        if not os.path.exists(self._config_file):
+        if not self.config_file_exists():
             if self._last_mtime is not None:
                 self._reset()
             return

src/system-health/scripts/healthd

@@ -73,6 +73,9 @@ class HealthDaemon(DaemonBase):
         import sonic_platform.platform
         chassis = sonic_platform.platform.Platform().get_chassis()
         manager = HealthCheckerManager()
+        if not manager.config.config_file_exists():
+            logger.log_warning("System health configuration file not found, exit...")
+            return
         while 1:
             state, stat = manager.check(chassis)
             if state == HealthCheckerManager.STATE_RUNNING: