Advanced operational features¶

Logging settings¶

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

# 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¶

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

Notification options¶

To support DHCP agent, rpc_notifier driver must be set. To set up the notification, edit notification options in neutron.conf:

# Driver or drivers to handle sending notifications. (multi
# valued)
# notification_driver=messagingv2

# AMQP topic used for OpenStack notifications. (list value)
# Deprecated group/name - [rpc_notifier2]/topics
notification_topics = notifications

Setting cases¶

Logging and RPC¶

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

A notification can be sent when a network, subnet, or port is created, updated or deleted. The notification system options are:

notification_driver
Defines the driver or drivers to handle the sending of a notification. The six available options are:
- messaging
  Send notifications using the 1.0 message format.
- messagingv2
  Send notifications using the 2.0 message format (with a message envelope).
- routing
  Configurable routing notifier (by priority or event_type).
- log
  Publish notifications using Python logging infrastructure.
- test
  Store notifications in memory for test verification.
- noop
  Disable sending notifications entirely.
default_notification_level
Is used to form topic names or to set a logging level.
default_publisher_id
Is a part of the notification payload.
notification_topics
AMQP topic used for OpenStack notifications. They can be comma-separated values. The actual topic names will be the values of default_notification_level.
control_exchange
This is an option defined in oslo.messaging. It is the default exchange under which topics are scoped. May be overridden by an exchange name specified in the transport_url option. It is a string value.

Below is a sample neutron.conf configuration file:

notification_driver = messagingv2

default_notification_level = INFO

host = myhost.com
default_publisher_id = $host

notification_topics = notifications

control_exchange = openstack

Advanced operational features