use LevelFormatter in parallel apps

IPython/parallel/apps/baseapp.py

@@ -29,7 +29,7 b' import sys'
 
 from subprocess import Popen, PIPE
 
-from IPython.config.application import catch_config_error
+from IPython.config.application import catch_config_error, LevelFormatter
 from IPython.core import release
 from IPython.core.crashhandler import CrashHandler
 from IPython.core.application import (
@@ -105,7 +105,7 b' class BaseParallelApplication(BaseIPythonApplication):'
     
     def _log_format_default(self):
         """override default log format to include time"""
-        return u"%(asctime)s.%(msecs).03d [%(name)s] %(message)s"
+        return u"%(asctime)s.%(msecs).03d [%(name)s]%(highlevel)s %(message)s"
 
     work_dir = Unicode(os.getcwdu(), config=True,
         help='Set the working dir for the process.'
@@ -191,8 +191,8 b' class BaseParallelApplication(BaseIPythonApplication):'
         else:
             self._log_handler = self.log.handlers[0]
         # Add timestamps to log format:
-        self._log_formatter = logging.Formatter(self.log_format,
-                                                datefmt="%Y-%m-%d %H:%M:%S")
+        self._log_formatter = LevelFormatter(self.log_format,
+                                                datefmt=self.log_datefmt)
         self._log_handler.setFormatter(self._log_formatter)
         # do not propagate log messages to root logger
         # ipcluster app will sometimes print duplicate messages during shutdown