Hi, I followed the video and the steps provided in this video link and the consumer connection is being refused. https://www.openstack.org/videos/summits/denver-2019/nova-versioned-notifica... /etc/nova/nova.conf file changes.. [notifications] notify_on_state_change=vm_state default_level=INFO notification_format=both [oslo_messaging_notifications] driver=messagingv2 transport_url=rabbit://guest:guest@10.30.8.57:5672/ topics=notification retry=-1 The python consume code is as follows (followed the example provided in the video: transport = oslo_messaging.get_notification_transport( cfg.CONF, url='rabbit://guest:guest@10.30.8.57:5672/') targets = [ oslo_messaging.Target(topic='versioned_notifications'), ] Am I missing any other configuration in any of the services in OpenStack? Let me know if you need any other info. /anil.