Add a better description for notification_driver

Improve description for the notification_driver
property in neutron.conf, so users will understand
how to configure it correctly.

Change-Id: Ib5d4c4b6eea5cabf58708d8201f9ff9c883b6c97

diff --git a/etc/neutron.conf b/etc/neutron.conf
index 655ed2e3a9c8a76fff297cee83318623839e1d6a..0b681771b28ce31323d399566369c1789071b5bd 100644 (file)
--- a/etc/neutron.conf
+++ b/etc/neutron.conf
@@ -540,8 +540,14 @@
 # Size of RPC greenthread pool. (integer value)
 # rpc_thread_pool_size=64
 
-# Driver or drivers to handle sending notifications. (multi
-# valued)
+# Driver(s) to handle sending notifications to be loaded from
+# the oslo.messaging.notify.drivers namespace. (multi valued)
+# See setup.cfg in oslo.messaging Repo:
+# https://github.com/openstack/oslo.messaging/blob/master/setup.cfg
+# The default value is an empty string,
+# which means notifications will be disabled.
+# Possible values: messaging, messagingv2, routing, log, test, noop.
+# Example: notification_driver = messaging
 # notification_driver=
 
 # AMQP topic used for OpenStack notifications. (list value)