Fix issues in naming and few other things

scripts/ucloud

@@ -5,11 +5,17 @@ import logging
 import importlib
 import sys
 import os
+import multiprocessing as mp
+
 
 COMMANDS = ['api', 'scheduler', 'host', 'filescanner', 'imagescanner', 'metadata']
 
 if __name__ == "__main__":
-    log = logging.getLogger("ucloud")
+    logging.basicConfig(level=logging.DEBUG,
+                    format='%(pathname)s:%(lineno)d -- %(levelname)-8s %(message)s',
+                    filename='/var/log/ucloud.log', filemode='a')
+
+    logger = logging.getLogger("ucloud")
 
     arg_parser = argparse.ArgumentParser(prog='ucloud',
                                          description='Open Source Cloud Management Software')
@@ -22,12 +28,12 @@ if __name__ == "__main__":
         os.environ['UCLOUD_CONF_DIR'] = args.conf_dir
 
     try:
+        mp.set_start_method('spawn')
         name = args.component
         mod = importlib.import_module("ucloud.{}.main".format(name))
         main = getattr(mod, "main")
-
-        main()
+        main(*args.component_args)
 
     except Exception as e:
-        logging.exception(e)
+        logger.exception(e)
         print(e)