Slightly refine log output to include username in addition to pid.

lib/ansible/callbacks.py

@@ -25,13 +25,15 @@ import fnmatch
 import tempfile
 import fcntl
 import constants
+import getpass
 from ansible.color import stringc
 
 import logging
 if constants.DEFAULT_LOG_PATH != '':
     logging.basicConfig(filename=constants.DEFAULT_LOG_PATH, level=logging.DEBUG, format='%(asctime)s %(name)s %(message)s')
-    mypid = os.getpid()
-    logger = logging.getLogger(str(mypid))
+    mypid = str(os.getpid())
+    user = getpass.getuser()
+    logger = logging.getLogger("p=%s u=%s | " % (mypid, user))
 
 callback_plugins = [x for x in utils.plugins.callback_loader.all()]