openstack/watcher
Code Issues Proposed changes

Merge "Fix doc about nova notifications"

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Zuul 2018-12-10 09:45:45 +00:00 committed by Gerrit Code Review
commit 6f1dace5c8
1 changed files with 11 additions and 15 deletions

26
doc/source/configuration/configuring.rst

@ -403,26 +403,22 @@ Watcher can consume notifications generated by the Nova services, in order to
build or update, in real time, its cluster data model related to computing
resources.
Nova publishes, by default, notifications on ``notifications`` AMQP queue
(configurable) and ``versioned_notifications`` AMQP queue (not
configurable). ``notifications`` queue is mainly used by ceilometer, so we can
not use it. And some events, related to nova-compute service state, are only
sent into the ``versioned_notifications`` queue.
Nova emits unversioned(legacy) and versioned notifications on different
topics. Because legacy notifications will be deprecated, Watcher consumes
Nova versioned notifications.
By default, Watcher listens to AMQP queues named ``watcher_notifications``
and ``versioned_notifications``. So you have to update the Nova
configuration file on controller and compute nodes, in order
to Watcher receives Nova notifications in ``watcher_notifications`` as well.
* In the file ``/etc/nova/nova.conf``, update the section
``[oslo_messaging_notifications]``, by redefining the list of topics
into which Nova services will publish events ::
* In the file ``/etc/nova/nova.conf``, the value of driver in the section
``[oslo_messaging_notifications]`` can't be noop, and the value of
notification_format in the section ``[notifications]``
should be both or versioned ::
[oslo_messaging_notifications]
driver = messagingv2
topics = notifications,watcher_notifications
* Restart the Nova services.
...
[notifications]
notification_format = both
Configure Cinder Notifications