ovn.ini¶

DEFAULT¶

debug¶

Type: boolean
Default: False
Mutable: This option can be changed without restarting.

If set to true, the logging level will be set to DEBUG instead of the default INFO level.

log_config_append¶

Type: string
Default: <None>
Mutable: This option can be changed without restarting.

The name of a logging configuration file. This file is appended to any existing logging configuration files. For details about logging configuration files, see the Python logging module documentation. Note that when logging configuration files are used then all logging configuration is set in the configuration file and other logging configuration options are ignored (for example, log-date-format).

Deprecated Variations¶
Group	Name
DEFAULT	log-config
DEFAULT	log_config

log_date_format¶

Type: string
Default: %Y-%m-%d %H:%M:%S

Defines the format string for %(asctime)s in log records. Default: the value above . This option is ignored if log_config_append is set.

log_file¶

Type: string
Default: <None>

(Optional) Name of log file to send logging output to. If no default is set, logging will go to stderr as defined by use_stderr. This option is ignored if log_config_append is set.

Deprecated Variations¶
Group	Name
DEFAULT	logfile

log_dir¶

Type: string
Default: <None>

(Optional) The base directory used for relative log_file paths. This option is ignored if log_config_append is set.

Deprecated Variations¶
Group	Name
DEFAULT	logdir

watch_log_file¶

Type: boolean
Default: False

Uses logging handler designed to watch file system. When log file is moved or removed this handler will open a new log file with specified path instantaneously. It makes sense only if log_file option is specified and Linux platform is used. This option is ignored if log_config_append is set.

use_syslog¶

Type: boolean
Default: False

Use syslog for logging. Existing syslog format is DEPRECATED and will be changed later to honor RFC5424. This option is ignored if log_config_append is set.

use_journal¶

Type: boolean
Default: False

Enable journald for logging. If running in a systemd environment you may wish to enable journal support. Doing so will use the journal native protocol which includes structured metadata in addition to log messages.This option is ignored if log_config_append is set.

syslog_log_facility¶

Type: string
Default: LOG_USER

Syslog facility to receive log lines. This option is ignored if log_config_append is set.

use_json¶

Type: boolean
Default: False

Use JSON formatting for logging. This option is ignored if log_config_append is set.

use_stderr¶

Type: boolean
Default: False

Log output to standard error. This option is ignored if log_config_append is set.

use_eventlog¶

Type: boolean
Default: False

Log output to Windows Event Log.

log_rotate_interval¶

Type: integer
Default: 1

The amount of time before the log files are rotated. This option is ignored unless log_rotation_type is setto “interval”.

log_rotate_interval_type¶

Type: string
Default: days
Valid Values: Seconds, Minutes, Hours, Days, Weekday, Midnight

Rotation interval type. The time of the last file change (or the time when the service was started) is used when scheduling the next rotation.

max_logfile_count¶

Type: integer
Default: 30

Maximum number of rotated log files.

max_logfile_size_mb¶

Type: integer
Default: 200

Log file maximum size in MB. This option is ignored if “log_rotation_type” is not set to “size”.

log_rotation_type¶

Type: string
Default: none
Valid Values: interval, size, none

Log rotation type.

Possible values

interval: Rotate logs at predefined time intervals.
size: Rotate logs once they reach a predefined size.
none: Do not rotate log files.

logging_context_format_string¶

Type: string
Default: %(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [%(request_id)s %(user_identity)s] %(instance)s%(message)s

Format string to use for log messages with context. Used by oslo_log.formatters.ContextFormatter

logging_default_format_string¶

Type: string
Default: %(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [-] %(instance)s%(message)s

Format string to use for log messages when context is undefined. Used by oslo_log.formatters.ContextFormatter

logging_debug_format_suffix¶

Type: string
Default: %(funcName)s %(pathname)s:%(lineno)d

Additional data to append to log message when logging level for the message is DEBUG. Used by oslo_log.formatters.ContextFormatter

logging_exception_prefix¶

Type: string
Default: %(asctime)s.%(msecs)03d %(process)d ERROR %(name)s %(instance)s

Prefix each line of exception output with this format. Used by oslo_log.formatters.ContextFormatter

logging_user_identity_format¶

Type: string
Default: %(user)s %(tenant)s %(domain)s %(user_domain)s %(project_domain)s

Defines the format string for %(user_identity)s that is used in logging_context_format_string. Used by oslo_log.formatters.ContextFormatter

default_log_levels¶

Type: list
Default: ['amqp=WARN', 'amqplib=WARN', 'boto=WARN', 'qpid=WARN', 'sqlalchemy=WARN', 'suds=INFO', 'oslo.messaging=INFO', 'oslo_messaging=INFO', 'iso8601=WARN', 'requests.packages.urllib3.connectionpool=WARN', 'urllib3.connectionpool=WARN', 'websocket=WARN', 'requests.packages.urllib3.util.retry=WARN', 'urllib3.util.retry=WARN', 'keystonemiddleware=WARN', 'routes.middleware=WARN', 'stevedore=WARN', 'taskflow=WARN', 'keystoneauth=WARN', 'oslo.cache=INFO', 'oslo_policy=INFO', 'dogpile.core.dogpile=INFO']

List of package logging levels in logger=LEVEL pairs. This option is ignored if log_config_append is set.

publish_errors¶

Type: boolean
Default: False

Enables or disables publication of error events.

instance_format¶

Type: string
Default: "[instance: %(uuid)s] "

The format for an instance that is passed with the log message.

instance_uuid_format¶

Type: string
Default: "[instance: %(uuid)s] "

The format for an instance UUID that is passed with the log message.

rate_limit_interval¶

Type: integer
Default: 0

Interval, number of seconds, of log rate limiting.

rate_limit_burst¶

Type: integer
Default: 0

Maximum number of logged messages per rate_limit_interval.

rate_limit_except_level¶

Type: string
Default: CRITICAL

Log level name used by rate limiting: CRITICAL, ERROR, INFO, WARNING, DEBUG or empty string. Logs with level greater or equal to rate_limit_except_level are not filtered. An empty string means that all levels are filtered.

fatal_deprecations¶

Type: boolean
Default: False

Enables or disables fatal status of deprecations.

ovn¶

ovn_nb_connection¶

Type: string
Default: tcp:127.0.0.1:6641

The connection string for the OVN_Northbound OVSDB. Use tcp:IP:PORT for TCP connection. Use ssl:IP:PORT for SSL connection. The ovn_nb_private_key, ovn_nb_certificate and ovn_nb_ca_cert are mandatory. Use unix:FILE for unix domain socket connection.

ovn_nb_private_key¶

Type: string
Default: ''

The PEM file with private key for SSL connection to OVN-NB-DB

ovn_nb_certificate¶

Type: string
Default: ''

The PEM file with certificate that certifies the private key specified in ovn_nb_private_key

ovn_nb_ca_cert¶

Type: string
Default: ''

The PEM file with CA certificate that OVN should use to verify certificates presented to it by SSL peers

ovn_sb_connection¶

Type: string
Default: tcp:127.0.0.1:6642

The connection string for the OVN_Southbound OVSDB. Use tcp:IP:PORT for TCP connection. Use ssl:IP:PORT for SSL connection. The ovn_sb_private_key, ovn_sb_certificate and ovn_sb_ca_cert are mandatory. Use unix:FILE for unix domain socket connection.

ovn_sb_private_key¶

Type: string
Default: ''

The PEM file with private key for SSL connection to OVN-SB-DB

ovn_sb_certificate¶

Type: string
Default: ''

The PEM file with certificate that certifies the private key specified in ovn_sb_private_key

ovn_sb_ca_cert¶

Type: string
Default: ''

The PEM file with CA certificate that OVN should use to verify certificates presented to it by SSL peers

ovsdb_connection_timeout¶

Type: integer
Default: 180

Timeout in seconds for the OVSDB connection transaction

ovsdb_retry_max_interval¶

Type: integer
Default: 180

Max interval in seconds between each retry to get the OVN NB and SB IDLs

ovsdb_probe_interval¶

Type: integer
Default: 60000
Minimum Value: 0

The probe interval in for the OVSDB session in milliseconds. If this is zero, it disables the connection keepalive feature. If non-zero the value will be forced to at least 1000 milliseconds. Defaults to 60 seconds.

neutron_sync_mode¶

Type: string
Default: log
Valid Values: off, log, repair

The synchronization mode of OVN_Northbound OVSDB with Neutron DB. off - synchronization is off log - during neutron-server startup, check to see if OVN is in sync with the Neutron database. Log warnings for any inconsistencies found so that an admin can investigate repair - during neutron-server startup, automatically create resources found in Neutron but not in OVN. Also remove resources from OVN that are no longer in Neutron.

ovn_l3_mode¶

Type: boolean
Default: True

Whether to use OVN native L3 support. Do not change the value for existing deployments that contain routers.

Warning

This option is deprecated for removal. Its value may be silently ignored in the future.

Reason: This option is no longer used. Native L3 support in OVN is always used.

ovn_l3_scheduler¶

Type: string
Default: leastloaded
Valid Values: leastloaded, chance

The OVN L3 Scheduler type used to schedule router gateway ports on hypervisors/chassis. leastloaded - chassis with fewest gateway ports selected chance - chassis randomly selected

enable_distributed_floating_ip¶

Type: boolean
Default: False

Enable distributed floating IP support. If True, the NAT action for floating IPs will be done locally and not in the centralized gateway. This saves the path to the external network. This requires the user to configure the physical network map (i.e. ovn-bridge-mappings) on each compute node.

vif_type¶

Type: string
Default: ovs
Valid Values: ovs, vhostuser

Type of VIF to be used for ports valid values are (ovs, vhostuser) default ovs

Warning

This option is deprecated for removal. Its value may be silently ignored in the future.

Reason: The port VIF type is now determined based on the OVN chassis information when the port is bound to a host.

vhost_sock_dir¶

Type: string
Default: /var/run/openvswitch

The directory in which vhost virtio socket is created by all the vswitch daemons

dhcp_default_lease_time¶

Type: integer
Default: 43200

Default least time (in seconds) to use with OVN’s native DHCP service.

ovsdb_log_level¶

Type: string
Default: INFO
Valid Values: CRITICAL, ERROR, WARNING, INFO, DEBUG

The log level used for OVSDB

ovn_metadata_enabled¶

Type: boolean
Default: False

Whether to use metadata service.

dns_servers¶

Type: list
Default: []

Comma-separated list of the DNS servers which will be used as forwarders if a subnet’s dns_nameservers field is empty. If both subnet’s dns_nameservers and this option is empty, then the DNS resolvers on the host running the neutron server will be used.

ovn_dhcp4_global_options¶

Type: dict
Default: {}

Dictionary of global DHCPv4 options which will be automatically set on each subnet upon creation and on all existing subnets when Neutron starts. An empty value for a DHCP option will cause that option to be unset globally. EXAMPLES: - ntp_server:1.2.3.4,wpad:1.2.3.5 - Set ntp_server and wpad - ntp_server:,wpad:1.2.3.5 - Unset ntp_server and set wpad See the ovn-nb(5) man page for available options.

ovn_dhcp6_global_options¶

Type: dict
Default: {}

Dictionary of global DHCPv6 options which will be automatically set on each subnet upon creation and on all existing subnets when Neutron starts. An empty value for a DHCP option will cause that option to be unset globally. EXAMPLES: - ntp_server:1.2.3.4,wpad:1.2.3.5 - Set ntp_server and wpad - ntp_server:,wpad:1.2.3.5 - Unset ntp_server and set wpad See the ovn-nb(5) man page for available options.

ovn_emit_need_to_frag¶

Type: boolean
Default: False

Configure OVN to emit “need to frag” packets in case of MTU mismatch. Before enabling this configuration make sure that its supported by the host kernel (version >= 5.2) or by checking the output of the following command: ovs-appctl -t ovs-vswitchd dpif/show-dp-features br-int | grep “Check pkt length action”.

ovs¶

ovsdb_timeout¶

Type: integer
Default: 10

Timeout in seconds for ovsdb commands. If the timeout expires, ovsdb commands will fail with ALARMCLOCK error.

bridge_mac_table_size¶

Type: integer
Default: 50000

The maximum number of MAC addresses to learn on a bridge managed by the Neutron OVS agent. Values outside a reasonable range (10 to 1,000,000) might be overridden by Open vSwitch according to the documentation.

igmp_snooping_enable¶

Type: boolean
Default: False

Enable IGMP snooping for integration bridge. If this option is set to True, support for Internet Group Management Protocol (IGMP) is enabled in integration bridge. Setting this option to True will also enable Open vSwitch mcast-snooping-disable-flood-unregistered flag. This option will disable flooding of unregistered multicast packets to all ports. The switch will send unregistered multicast packets only to ports connected to multicast routers.

ovn.ini

ovn.ini¶

DEFAULT¶

ovn¶

ovs¶

Neutron 17.4.2.dev107

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