Networking components use Python logging module to do logging. Logging configuration can be provided in neutron.conf or as command line options. Command options override ones in neutron.conf. To configure logging for Networking components, use one of these methods: Provide logging settings in a logging configuration file. See Python logging how-to to learn more about logging. Provide logging setting in neutron.conf [DEFAULT] # Default log level is WARNING # Show debugging output in logs (sets DEBUG log level output) # debug = False # Show more verbose log output (sets INFO log level output) if debug is False # verbose = False # log_format = %(asctime)s %(levelname)8s [%(name)s] %(message)s # log_date_format = %Y-%m-%d %H:%M:%S # use_syslog = False # syslog_log_facility = LOG_USER # if use_syslog is False, we can set log_file and log_dir. # if use_syslog is False and we do not set log_file, # the log will be printed to stdout. # log_file = # log_dir =

Notifications can be sent when Networking resources such as network, subnet and port are created, updated or deleted.

To support DHCP agent, rpc_notifier driver must be set. To set up the notification, edit notification options in neutron.conf: # ============ Notification System Options ===================== # Notifications can be sent when network/subnet/port are create, updated or deleted. # There are three methods of sending notifications: logging (via the # log_file directive), rpc (via a message queue) and # noop (no notifications sent, the default) # Notification_driver can be defined multiple times # Do nothing driver # notification_driver = neutron.openstack.common.notifier.no_op_notifier # Logging driver # notification_driver = neutron.openstack.common.notifier.log_notifier # RPC driver notification_driver = neutron.openstack.common.notifier.rpc_notifier # default_notification_level is used to form actual topic names or to set logging level # default_notification_level = INFO # default_publisher_id is a part of the notification payload # host = myhost.com # default_publisher_id = $host # Defined in rpc_notifier for rpc way, can be comma separated values. # The actual topic names will be %s.%(default_notification_level)s notification_topics = notifications

These options configure the Networking server to send notifications through logging and RPC. The logging options are described in OpenStack Configuration Reference . RPC notifications go to 'notifications.info' queue bound to a topic exchange defined by 'control_exchange' in neutron.conf. # ============ Notification System Options ===================== # Notifications can be sent when network/subnet/port are create, updated or deleted. # There are three methods of sending notifications: logging (via the # log_file directive), rpc (via a message queue) and # noop (no notifications sent, the default) # Notification_driver can be defined multiple times # Do nothing driver # notification_driver = neutron.openstack.common.notifier.no_op_notifier # Logging driver notification_driver = neutron.openstack.common.notifier.log_notifier # RPC driver notification_driver = neutron.openstack.common.notifier.rpc_notifier # default_notification_level is used to form actual topic names or to set logging level default_notification_level = INFO # default_publisher_id is a part of the notification payload # host = myhost.com # default_publisher_id = $host # Defined in rpc_notifier for rpc way, can be comma separated values. # The actual topic names will be %s.%(default_notification_level)s notification_topics = notifications

These options configure the Networking server to send notifications to multiple RPC topics. RPC notifications go to 'notifications_one.info' and 'notifications_two.info' queues bound to a topic exchange defined by 'control_exchange' in neutron.conf. # ============ Notification System Options ===================== # Notifications can be sent when network/subnet/port are create, updated or deleted. # There are three methods of sending notifications: logging (via the # log_file directive), rpc (via a message queue) and # noop (no notifications sent, the default) # Notification_driver can be defined multiple times # Do nothing driver # notification_driver = neutron.openstack.common.notifier.no_op_notifier # Logging driver # notification_driver = neutron.openstack.common.notifier.log_notifier # RPC driver notification_driver = neutron.openstack.common.notifier.rabbit_notifier # default_notification_level is used to form actual topic names or to set logging level default_notification_level = INFO # default_publisher_id is a part of the notification payload # host = myhost.com # default_publisher_id = $host # Defined in rpc_notifier for rpc way, can be comma separated values. # The actual topic names will be %s.%(default_notification_level)s notification_topics = notifications_one,notifications_two