Fix config reload

pgmon.py

@@ -57,7 +57,7 @@ def init_logging(config):
     logger = logging.getLogger(__name__)
 
     # Create a common formatter
-    formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
+    formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(filename)s: %(funcName)s() line %(lineno)d: %(message)s')
 
     # Set up or modify stderr logging
     if config.stderr_log_level != 'OFF':
@@ -125,12 +125,14 @@ def init_logging(config):
         # If we have no handlers, just bump the level to the max
         logger.setLevel(logging.CRITICAL)
 
+    logger.debug("Logging initialized")
 
 #
 # PID file handling
 #
 def write_pid_file(pid_file):
     if pid_file is not None:
+        logger.debug("Writing PID file: {}".format(pid_file))
         with open(pid_file, 'w') as f:
             f.write("{}".format(os.getpid()))
 
@@ -143,6 +145,7 @@ def read_pid_file(pid_file):
 
 def remove_pid_file(pid_file):
     if pid_file is not None:
+        logger.debug("Removing PID file: {}".format(pid_file))
         os.unlink(pid_file)
 
 
@@ -220,6 +223,9 @@ class Config:
         self.metrics = {}                   # Metrics
         self.clusters = {}                  # Known clusters
 
+        # Store the commandline args to be used when reloading the config
+        self.args = args
+
         # Check if we have a config file
         self.config_file = args.config
 
@@ -1045,7 +1051,7 @@ class Server:
         reload = False
 
         # Read new config
-        new_config = Config(self.config_file)
+        new_config = Config(self.config.args)
 
         # Re-init logging in case settings changed
         init_logging(new_config)