dhcp_agent.ini¶

ovs_integration_bridge¶

Type:	string
Default:	br-int

Name of Open vSwitch bridge to use

ovs_use_veth¶

Type:	boolean
Default:	false

Uses veth for an OVS interface or not. Support kernels with limited namespace support (e.g. RHEL 6.5) and rate limiting on router’s gateway port so long as ovs_use_veth is set to True.

interface_driver¶

Type:	string
Default:	<None>

The driver used to manage the virtual interface.

resync_interval¶

Type:	integer
Default:	5

The DHCP agent will resync its state with Neutron to recover from any transient notification or RPC errors. The interval is number of seconds between attempts.

dhcp_driver¶

Type:	string
Default:	neutron.agent.linux.dhcp.Dnsmasq

The driver used to manage the DHCP server.

enable_isolated_metadata¶

Type:	boolean
Default:	false

The DHCP server can assist with providing metadata support on isolated networks. Setting this value to True will cause the DHCP server to append specific host routes to the DHCP request. The metadata service will only be activated when the subnet does not contain any router port. The guest instance must be configured to request host routes via DHCP (Option 121). This option doesn’t have any effect when force_metadata is set to True.

force_metadata¶

Type:	boolean
Default:	false

In some cases the Neutron router is not present to provide the metadata IP but the DHCP server can be used to provide this info. Setting this value will force the DHCP server to append specific host routes to the DHCP request. If this option is set, then the metadata service will be activated for all the networks.

enable_metadata_network¶

Type:	boolean
Default:	false

Allows for serving metadata requests coming from a dedicated metadata access network whose CIDR is 169.254.169.254/16 (or larger prefix), and is connected to a Neutron router from which the VMs send metadata:1 request. In this case DHCP Option 121 will not be injected in VMs, as they will be able to reach 169.254.169.254 through a router. This option requires enable_isolated_metadata = True.

num_sync_threads¶

Type:	integer
Default:	4

Number of threads to use during sync process. Should not exceed connection pool size configured on server.

dhcp_confs¶

Type:	string
Default:	$state_path/dhcp

Location to store DHCP server config files.

dnsmasq_config_file¶

Type:	string
Default:	u''

Override the default dnsmasq settings with this file.

dnsmasq_dns_servers¶

Type:	list
Default:	u''

Comma-separated list of the DNS servers which will be used as forwarders.

dnsmasq_base_log_dir¶

Type:	string
Default:	<None>

Base log dir for dnsmasq logging. The log contains DHCP and DNS log information and is useful for debugging issues with either DHCP or DNS. If this section is null, disable dnsmasq log.

dnsmasq_local_resolv¶

Type:	boolean
Default:	false

Enables the dnsmasq service to provide name resolution for instances via DNS resolvers on the host running the DHCP agent. Effectively removes the ‘–no-resolv’ option from the dnsmasq process arguments. Adding custom DNS resolvers to the ‘dnsmasq_dns_servers’ option disables this feature.

dnsmasq_lease_max¶

Type:	integer
Default:	16777216

Limit number of leases to prevent a denial-of-service.

dhcp_broadcast_reply¶

Type:	boolean
Default:	false

Use broadcast in DHCP replies.

dhcp_renewal_time¶

Type:	integer
Default:	0

DHCP renewal time T1 (in seconds). If set to 0, it will default to half of the lease time.

dhcp_rebinding_time¶

Type:	integer
Default:	0

DHCP rebinding time T2 (in seconds). If set to 0, it will default to 7/8 of the lease time.

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, logging_context_format_string).

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.

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.

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.

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.

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.

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.

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,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.

availability_zone¶

Type:	string
Default:	nova

Availability zone of this node

report_interval¶

Type:	floating point
Default:	30

Seconds between nodes reporting state to server; should be less than agent_down_time, best if it is half or less than agent_down_time.

log_agent_heartbeats¶

Type:	boolean
Default:	false

Log agent heartbeats

ovsdb_interface¶

Type:	string
Default:	native
Valid Values:	vsctl, native

The interface for interacting with the OVSDB

Warning

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

ovsdb_connection¶

Type:	string
Default:	tcp:127.0.0.1:6640

The connection string for the OVSDB backend. Will be used by ovsdb-client when monitoring and used for the all ovsdb commands when native ovsdb_interface is enabled

ssl_key_file¶

Type:	string
Default:	<None>

The SSL private key file to use when interacting with OVSDB. Required when using an “ssl:” prefixed ovsdb_connection

ssl_cert_file¶

Type:	string
Default:	<None>

The SSL certificate file to use when interacting with OVSDB. Required when using an “ssl:” prefixed ovsdb_connection

ssl_ca_cert_file¶

Type:	string
Default:	<None>

The Certificate Authority (CA) certificate to use when interacting with OVSDB. Required when using an “ssl:” prefixed ovsdb_connection

ovsdb_timeout¶

Type:	integer
Default:	10

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

Deprecated Variations¶

Group	Name
DEFAULT	ovs_vsctl_timeout

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.