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