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app_core.xml
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app_core.xml
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<?xml version="1.0" encoding="UTF-8"?>
<appendix xmlns="http://docbook.org/ns/docbook"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0"
xml:id="app_core">
<title>Core Configuration File Options</title>
<section xml:id="quantum_conf">
<?dbhtml stop-chunking?>
<title>quantum.conf</title>
<para>Find the configuration settings for the OpenStack
Networking services in
<filename>/etc/quantum/quantum.conf</filename>.</para>
<section xml:id="debug_options">
<title>Debugging Options</title>
<table rules="all">
<caption>Debugging Options</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>debug=False </td>
<td>(BoolOpt) Prints debugging output. </td>
</tr>
<tr>
<td>verbose=False </td>
<td>(BoolOpt) Prints more verbose output.
</td>
</tr>
</tbody>
</table>
</section>
<section xml:id="log_options">
<title>Logging Options</title>
<table rules="all">
<caption>Logging Options</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>log_config= </td>
<td>(StrOpt) The logging configuration file.
Overrides any other logging options
specified. See the Python logging module
documentation for details on logging
configuration files. </td>
</tr>
<tr>
<td>log_format=%(asctime)s %(levelname)8s
[%(name)s] %(message)s </td>
<td>(StrOpt) A logging.Formatter log message
format string that can use any of the
available logging.LogRecord attributes.
</td>
</tr>
<tr>
<td>log_date_format=%Y-%m-%d %H:%M:%S </td>
<td>(StrOpt) Format string for %(asctime)s in
log records. </td>
</tr>
<tr>
<td>log_file= </td>
<td>(StrOpt) (Optional) Name of log file to
output to. If not set, logging goes to
stdout. </td>
</tr>
<tr>
<td>log_dir= </td>
<td>(StrOpt) (Optional) The directory to keep
log files in (will be prepended to
--logfile). </td>
</tr>
<tr>
<td>use_syslog=False </td>
<td>(BoolOpt) Uses syslog for logging. </td>
</tr>
<tr>
<td>syslog_log_facility=LOG_USER </td>
<td>(StrOpt) The syslog facility to receive
log lines.</td>
</tr>
</tbody>
</table>
</section>
<section xml:id="auth_options">
<title>Authentication Options</title>
<para>The auth_token middleware for keystone now enables
you to configure auth_token in the
<filename>quantum.conf</filename> file. You no
longer have to edit the
<filename>api-paste.ini</filename> file. This
change does not break backward compatibility. The
auth_token middleware first tries the configurations
in <filename>/etc/quantum/api-paste.ini</filename> and
then tries the <filename>quantum.conf</filename>
configuration. If you currently use
<filename>api-paste.ini</filename>, you do not
need to change it.</para>
<table rules="all">
<caption>Authentication Options</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>auth_host = 127.0.0.1</td>
<td>(StrOpt) Authentication listening
host.</td>
</tr>
<tr>
<td>auth_port = 35357</td>
<td>(IntOpt) Authentication listening
port.</td>
</tr>
<tr>
<td>auth_protocol = http</td>
<td>(StrOpt) Authentication protocol.</td>
</tr>
<tr>
<td>admin_tenant_name = </td>
<td>(StrOpt) The administrative tenant
name.</td>
</tr>
<tr>
<td>admin_user = </td>
<td>(StrOpt) The administrative user
name.</td>
</tr>
<tr>
<td>admin_password = </td>
<td>(StrOpt) The password for the
administrative user.</td>
</tr>
<tr>
<td>signing_dir =
/var/lib/quantum/keystone-signing</td>
<td>(StrOpt) The signing directory. </td>
</tr>
</tbody>
</table>
</section>
<section xml:id="service_options">
<title>Service Options</title>
<table rules="all">
<caption>Service Options</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>bind_host=0.0.0.0 </td>
<td>(StrOpt) Server listening IP. </td>
</tr>
<tr>
<td>bind_port=9696 </td>
<td>(IntOpt) Server listening port. </td>
</tr>
<tr>
<td>api_paste_config=api-paste.ini </td>
<td>(StrOpt) The paste configuration file,
which configures the WSGI application.
</td>
</tr>
<tr>
<td>api_extensions_path= </td>
<td>(StrOpt) Enables custom addition to be
made to the above configuration. </td>
</tr>
<tr>
<td>policy_file=policy.json </td>
<td>(StrOpt) JSON file representing policies
to access and view data. The usage and
format is discussed in more detail in the
Authentication and Authorization section.
</td>
</tr>
<tr>
<td>auth_strategy=keystone </td>
<td>(StrOpt) The strategy used for
authentication. The supported values are
‘keystone’ and ‘noauth’. </td>
</tr>
<tr>
<td>
core_plugin=quantum.plugins.sample.SamplePlugin.FakePlugin </td>
<td>(StrOpt) The plugin to be loaded by the
service. </td>
</tr>
<tr>
<td> pagination_max_limit=-1 </td>
<td>(StrOpt) The maximum number of items
returned in a single response. A value of
'infinite', or a negative integer means no
limit. </td>
</tr>
</tbody>
</table>
</section>
<section xml:id="base_plugin_options">
<title>Plugin Options</title>
<table rules="all">
<caption>Base Plugin Options</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>base_mac=fa:16:3e:00:00:00 </td>
<td>(StrOpt) MAC addresses for a port are
generated. The first 3 octets will remain
unchanged. If the 4h octet is not 00, it
will also used. The others will be
randomly generated. </td>
</tr>
<tr>
<td>mac_generation_retries=16 </td>
<td>(IntOpt) The number of times the plugin
attempts to generate a unique MAC address.
</td>
</tr>
<tr>
<td>allow_bulk=True </td>
<td>(BoolOpt) Enables or disables bulk
create/update/delete operations. </td>
</tr>
<tr>
<td>allow_pagination=False </td>
<td><para>(BoolOpt) Enables or disables
pagination. If plugin doesn't support
native pagination, it will enable
emulated pagination. Please note
native pagination depends on native
sorting. If native pagination is
enabled, native emulated sorting will
be enabled automatically.</para>
<note>
<para>If the plugin supports native
pagination, the plugin will returns
the maximum limit of items as
request. If the plugin didn't
support that, quantum API can
emulate the pagination behavior.
The performance of native
pagination is better than emulated
pagination. </para>
</note>
</td>
</tr>
<tr>
<td>allow_sorting=False </td>
<td><para>(BoolOpt) Enables or disables
sorting. If plugin doesn't support
native sorting, it will enable
emulated sorting.</para>
<note>
<para>If the plugin supports native
sorting, the plugin will returns
ordered items as request. If the
plugin didn't support that, quantum
API can emulate the sorting
behavior. The performance of native
sorting is better than emulated
sorting. </para>
</note>
</td>
</tr>
<tr>
<td>max_dns_nameservers=5 </td>
<td>(IntOpt) The maximum amount of DNS
nameservers that can be configured per
subnet. </td>
</tr>
<tr>
<td>max_subnet_host_routes=20 </td>
<td>(IntOpt) The maximum amount of host routes
that can be configured per subnet. </td>
</tr>
<tr>
<td>state_path=. </td>
<td>(StrOpt) Top level directory for
configuration files. </td>
</tr>
<tr>
<td>dhcp_lease_duration=120 </td>
<td>(IntOpt) The default expiration time, in
seconds, for a DHCP address. </td>
</tr>
</tbody>
</table>
</section>
<section xml:id="common_rpc_message_options">
<title>Common RPC Message Options</title>
<table rules="all">
<caption>Common RPC Message Options</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>control_exchange=quantum </td>
<td>(StrOpt) AMQP exchange to connect to if
using RabbitMQ or QPID. </td>
</tr>
<tr>
<td>
rpc_back_end=quantum.openstack.common.rpc.impl_kombu </td>
<td>(StrOpt) The messaging module to use,
defaults to kombu. For qpid, make use of
quantum.openstack.common.rpc.impl_qpid.
</td>
</tr>
<tr>
<td>rpc_thread_pool_size=64 </td>
<td>(IntOpt) Size of RPC thread pool. </td>
</tr>
<tr>
<td>rpc_conn_pool_size=30 </td>
<td>(IntOpt) Size of RPC connection pool.
</td>
</tr>
<tr>
<td>rpc_response_timeout=60 </td>
<td>(IntOpt) Seconds to wait for a response
from call or multi call.</td>
</tr>
<tr>
<td>
allowed_rpc_exception_modules='quantum.openstack.common.exception',
'nova.exception' </td>
<td>(ListOpt) Modules of exceptions that are
permitted to be recreated upon receiving
exception data from an rpc call. </td>
</tr>
<tr>
<td>fake_rabbit=False </td>
<td>(BoolOpt) If passed, use a fake RabbitMQ
provider.</td>
</tr>
</tbody>
</table>
</section>
<section xml:id="rabbit_rpc_options">
<title>Rabbit RPC Options</title>
<table rules="all">
<caption>Rabbit RPC Options</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>kombu_ssl_version= </td>
<td>(StrOpt) SSL version to use (valid only if
SSL enabled). </td>
</tr>
<tr>
<td>kombu_ssl_keyfile= </td>
<td>(StrOpt) SSL key file (valid only if SSL
enabled). </td>
</tr>
<tr>
<td>kombu_ssl_certfile= </td>
<td>(StrOpt) SSL cert file (valid only if SSL
enabled). </td>
</tr>
<tr>
<td>kombu_ssl_ca_certs= </td>
<td>(StrOpt) SSL certification authority file
(valid only if SSL enabled).</td>
</tr>
<tr>
<td>rabbit_host=localhost </td>
<td>(StrOpt) IP address of the RabbitMQ
installation. </td>
</tr>
<tr>
<td>rabbit_password=guest </td>
<td>Password of the RabbitMQ server. </td>
</tr>
<tr>
<td>rabbit_port=5672 </td>
<td>(IntOpt) Port where RabbitMQ server is
running/listening. </td>
</tr>
<tr>
<td>rabbit_userid=guest </td>
<td>(StrOpt) User ID used for RabbitMQ
connections. </td>
</tr>
<tr>
<td>rabbit_virtual_host=/ </td>
<td>(StrOpt) Location of a virtual RabbitMQ
installation. </td>
</tr>
<tr>
<td>rabbit_max_retries=0 </td>
<td>(IntOpt) Maximum retries with trying to
connect to RabbitMQ. The default of 0
implies an infinite retry count. </td>
</tr>
<tr>
<td>rabbit_retry_interval=1 </td>
<td>(IntOpt) RabbitMQ connection retry
interval. </td>
</tr>
</tbody>
</table>
</section>
<section xml:id="qpid_rpc_options">
<title>QPID RPC Options</title>
<table rules="all">
<caption>QPID RPC Options</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>qpid_hostname=localhost </td>
<td>(StrOpt) Qpid broker hostname. </td>
</tr>
<tr>
<td>qpid_port=5672 </td>
<td>(IntOpt) Qpid broker port. </td>
</tr>
<tr>
<td>qpid_username= </td>
<td>(StrOpt) Username for qpid connection.
</td>
</tr>
<tr>
<td>qpid_password= </td>
<td>(StrOpt) Password for qpid connection.
</td>
</tr>
<tr>
<td>qpid_sasl_mechanisms= </td>
<td>(StrOpt) Space separated list of SASL
mechanisms to use for auth.</td>
</tr>
<tr>
<td>qpid_reconnect=True </td>
<td>(BoolOpt) Automatically reconnect. </td>
</tr>
<tr>
<td>qpid_reconnect_timeout=0 </td>
<td>(IntOpt) The number of seconds to wait
before deciding that a reconnect attempt
has failed. </td>
</tr>
<tr>
<td>qpid_reconnect_limit=0 </td>
<td>(IntOpt) The limit for the number of times
to reconnect before considering the
connection to be failed. </td>
</tr>
<tr>
<td>qpid_reconnect_interval_min=0 </td>
<td>(IntOpt) Minimum seconds between
reconnection attempts. </td>
</tr>
<tr>
<td>qpid_reconnect_interval_max=0 </td>
<td>(IntOpt) Maximum seconds between
reconnection attempts. </td>
</tr>
<tr>
<td>qpid_reconnect_interval=0 </td>
<td>(IntOpt) Equivalent to setting max and min
to the same value. </td>
</tr>
<tr>
<td>qpid_heartbeat=60 </td>
<td>(IntOpt) Seconds between connection
keepalive heartbeats. </td>
</tr>
<tr>
<td>qpid_protocol=tcp </td>
<td>(StrOpt) Transport to use, either 'tcp' or
'ssl.' </td>
</tr>
<tr>
<td>qpid_tcp_nodelay=True </td>
<td>(BoolOpt) Disable Nagle algorithm. </td>
</tr>
</tbody>
</table>
</section>
<section xml:id="notification_options">
<title>Notification Options</title>
<table rules="all">
<caption>Notification Options</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>
notification_driver=quantum.openstack.common.notifier.list_notifier </td>
<td>(MultiStrOpt) Driver or drivers to handle
sending notifications. The default is set
as notifier as the DHCP agent makes use of
the notifications. </td>
</tr>
<tr>
<td>default_notification_level=INFO </td>
<td>(StrOpt) Default notification level for
outgoing notifications. </td>
</tr>
<tr>
<td>default_publisher_id=$host </td>
<td>(StrOpt) Default publisher_id for outgoing
notifications. </td>
</tr>
<tr>
<td>
list_notifier_drivers='quantum.openstack.common.notifier.no_op_notifier' </td>
<td>(MultiStrOpt) List of drivers to send
notifications. </td>
</tr>
<tr>
<td>notification_topics='notifications' </td>
<td>(ListOpt) AMQP topic used for openstack
notifications. </td>
</tr>
</tbody>
</table>
</section>
<section xml:id="quota_options">
<title>Quota Options</title>
<table rules="all">
<caption>Quota Options</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>quota_driver=quantum.quota.ConfDriver </td>
<td>(StrOpt) Default driver to use for quota
checks. If the default driver is used then
the configuration values below are in
effect. To limit quotas per tenant then
use:
<literal>quantum.db.quota_db.DbQuotaDriver</literal>
</td>
</tr>
<tr>
<td>quota_items=network,subnet,port </td>
<td>(ListOpt) Resource names that are
supported by the Quotas feature. </td>
</tr>
<tr>
<td>default_quota=-1 </td>
<td>(IntOpt) Default number of resources
allowed per tenant, minus for unlimited.
</td>
</tr>
<tr>
<td>quota_network=10 </td>
<td>(IntOpt) Number of networks allowed per
tenant, and minus means unlimited. </td>
</tr>
<tr>
<td>quota_subnet=10 </td>
<td>(IntOpt) Number of subnets allowed per
tenant, and minus means unlimited. </td>
</tr>
<tr>
<td>quota_port=50 </td>
<td>(IntOpt) Number of ports allowed per
tenant, and minus means unlimited. </td>
</tr>
</tbody>
</table>
</section>
</section>
<section xml:id="ovs_quantum_plugin">
<?dbhtml stop-chunking?>
<title>ovs_quantum_plugin.ini</title>
<para>For information about the Open vSwitch plugin
configurations, see <link
xlink:href="http://wiki.openstack.org/ConfigureOpenvswitch"
>http://wiki.openstack.org/ConfigureOpenvswitch</link>. </para>
<section xml:id="database_access_by_plugin">
<title>Database Access by Plugin</title>
<table rules="all">
<caption>Database Access by Plugin</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>sql_connection=sqlite:// </td>
<td><para>(StrOpt) The details of the database
connection. For example
mysql://root:nova@127.0.0.1:3306/ovs_quantum.
Replace 127.0.0.1 above with the IP
address of the database used by the
main OpenStack Networking server.
(Leave it as is if the database runs
on this host.).</para>
<note>
<para>Change this line to ensure that
the database values are persistent.
The sqlite is used for testing. </para>
</note></td>
</tr>
<tr>
<td>sql_max_retries=10 </td>
<td>(IntOpt) The number of database
re-connection retry times. Used if
connectivity is lost with the database. -1
implies an infinite retry count. </td>
</tr>
<tr>
<td>reconnect_interval=2 </td>
<td>(IntOpt) The database reconnection
interval in seconds. Used if connectivity
is lost. </td>
</tr>
</tbody>
</table>
</section>
<section xml:id="ovs_options">
<title>OVS Options</title>
<para>Specify these parameters in the
<literal>OVS</literal> section. </para>
<para>These OVS options are common to the plugin and
agent.</para>
<table rules="all">
<caption>OVS Options Common to Plugin and
Agent</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>network_vlan_ranges=default:2000:3999 </td>
<td>(ListOpt) Comma-separated list of
<physical_network>:<vlan_min>:<vlan_max>
tuples enumerating ranges of VLAN IDs on
named physical networks that are available
for allocation. </td>
</tr>
<tr>
<td>tunnel_id_ranges= </td>
<td>(ListOpt) Comma-separated list of
<tun_min>:<tun_max> tuples
enumerating ranges of GRE tunnel IDs that
are available for allocation. </td>
</tr>
<tr>
<td>integration_bridge=br-int </td>
<td>(StrOpt) The name of the OVS integration
bridge. There is one per hypervisor. The
integration bridge acts as a virtual
"patch port". All VM VIFs are attached to
this bridge and then "patched" according
to their network connectivity. Do not
change this parameter unless you have a
good reason to. </td>
</tr>
<tr>
<td>tunnel_bridge=br-tun </td>
<td>(StrOpt) The name of the OVS tunnel bridge
used by the agent for GRE tunnels. Only
used if tunnel_id_ranges is not empty.
</td>
</tr>
<tr>
<td>bridge_mappings=default:br-eth1 </td>
<td>(ListOpt) Comma-separated list of
<physical_network>:<bridge>
tuples mapping physical network names to
agent's node-specific OVS bridge names.
Each bridge must exist, and should have
physical network # interface configured as
a port. </td>
</tr>
<tr>
<td>local_ip=10.0.0.3 </td>
<td>(StrOpt) The local IP address of this
hypervisor. Used only when
tunnel_id_ranges are used. </td>
</tr>
<tr>
<td>enable_tunneling=False </td>
<td>(BoolOpt) A flag indicating if tunneling
is supported. Not all systems that support
Open vSwitch support its GRE tunneling
feature, that is, it is not supported in
the Linux kernel source tree. This applies
to both the server and agent. </td>
</tr>
</tbody>
</table>
</section>
<section xml:id="agent_options">
<title>Agent Options</title>
<para>Specify these options in the
<literal>AGENT</literal> section.</para>
<table rules="all">
<caption>Agent Options</caption>
<thead>
<tr>
<th>Configuration option=Default value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>rpc=True </td>
<td>(BoolOpt) If <literal>True</literal>, the
agent communicates with the plugin through
the OpenStack RPC, which is configured in
<filename>quantum.conf.</filename> If
<literal>False</literal>, the agent
polls the database for changes. If
<literal>False</literal>, you must
update the relevant database settings on
the agent so that it can access the
database. </td>
</tr>
<tr>
<td>polling_interval=2 </td>
<td>(IntOpt) Agent's polling interval in
seconds. </td>
</tr>
<tr>
<td>root_helper=sudo </td>
<td>(StrOpt) Limits the commands that can be
run. See the rootwrap section for more
details. </td>
</tr>
</tbody>
</table>
</section>
</section>
<section xml:id="linuxbridge_conf">
<?dbhtml stop-chunking?>
<title>linuxbridge_conf.ini</title>
<section xml:id="database_access_by_plugin_linuxbridge">
<title>Database Access by Plugin</title>
<para><table rules="all">
<caption>Database Access by Plugin</caption>
<thead>
<tr>
<th>Configuration option=Default
value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>sql_connection=sqlite:// </td>
<td><para>(StrOpt) The details of the
database connection. For example
mysql://root:nova@127.0.0.1:3306/ovs_quantum.
Replace 127.0.0.1 above with the IP
address of the database used by the
main OpenStack Networking server.
(Leave it as is if the database
runs on this host.).</para>
<note>
<para>This line must be changed to
ensure that the database values are
persistent. The sqlite is used for
testing.</para>
</note></td>
</tr>
<tr>
<td>sql_max_retries=10 </td>
<td>(IntOpt) Database re-connection retry
times. Used if connectivity is lost
with the database. -1 implies an
infinite retry count. </td>
</tr>
<tr>
<td>reconnect_interval=2 </td>
<td>(IntOpt) Database reconnection
interval in seconds. Used if
connectivity is lost. </td>
</tr>
</tbody>
</table>
</para>
</section>
<section xml:id="vlan_config">
<title>VLAN Configurations</title>
<para> <table rules="all">
<caption>VLAN Configurations</caption>
<thead>
<tr>
<th>Configuration option=Default
value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>network_vlan_ranges=default:1000:2999 </td>
<td>(ListOpt) Comma-separated list of
<physical_network>:<vlan_min>:<vlan_max>
tuples enumerating ranges of VLAN IDs
on named physical networks that are
available for allocation. </td>
</tr>
</tbody>
</table></para>
</section>
<section xml:id="networking_options_on_agent">
<title>Networking Options on the Agent</title>
<para>
<table rules="all">
<caption>Networking Options on the Agent</caption>
<thead>
<tr>
<th>Configuration option=Default
value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>physical_interface_mappings=default:eth1 </td>
<td>(ListOpt) Comma-separated list of
<physical_network>:<physical_interface>
tuples mapping physical network names
to agent's node-specific physical
network interfaces. Server uses
physical network names for validation
but ignores interfaces. </td>
</tr>
</tbody>
</table></para>
</section>
<section xml:id="agent_options_linuxbridge">
<title>Agent Options</title>
<para>
<table rules="all">
<caption>Agent Options</caption>
<thead>
<tr>
<th>Configuration option=Default
value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>rpc=True </td>
<td>(BoolOpt) If <literal>True</literal>,
the agent communicates with the plugin
through the OpenStack RPC, which is
configured in
<filename>quantum.conf</filename>.
If <literal>False</literal>, the agent
polls the database for changes. If
<literal>False</literal>, you must
update the relevant database settings
on the agent so that it can access the
database. </td>
</tr>
<tr>
<td>polling_interval=2 </td>
<td>(IntOpt) Agent's polling interval in
seconds. </td>
</tr>
<tr>
<td>root_helper=sudo </td>
<td>(StrOpt) Limits the commands that can
be run. See the rootwrap section for
more details. </td>
</tr>
</tbody>
</table> </para>
</section>
</section>
<section xml:id="dhcp_agent_ini">
<?dbhtml stop-chunking?>
<title>dhcp_agent.ini</title>
<para>For device manager options, see <xref
linkend="device_manager_options"/>.</para>
<section xml:id="dhcp_specific_options">
<title>DHCP-Specific Options</title>
<para>
<table rules="all">
<caption>DHCP-Specific Options</caption>
<thead>
<tr>
<th>Configuration option=Default
value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>root_helper=sudo </td>
<td>(StrOpt) Limits the commands that can
be run. See the rootwrap section for
more details. </td>
</tr>
<tr>
<td>dhcp_driver=quantum.agent.linux.dhcp.Dnsmasq </td>
<td>(StrOpt) The driver used to manage the
DHCP server. </td>
</tr>
<tr>
<td>
dhcp_lease_relay_socket=$state_path/dhcp/lease_relay </td>
<td>(StrOpt) Location to DHCP lease relay
UNIX domain socket. </td>
</tr>
<tr>
<td>use_namespaces=True </td>
<td><para>(BoolOpt) Allows overlapping
IP.</para>
<note>
<para>If you run multiple agents
with different IP addresses on the
same host, set this parameter to
<literal>True</literal>. Otherwise,
routing problems occur.</para>
</note></td>
</tr>
</tbody>
</table></para>
</section>
<section xml:id="dnsmasq_options">
<title>dnsmasq Options</title>
<para>
<table rules="all">
<caption>dnsmasq Options</caption>
<thead>
<tr>
<th>Configuration option=Default
value</th>
<th>(Type) Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>dhcp_confs=$state_path/dhcp </td>
<td>(StrOpt) Location to store DHCP server
config files.</td>
</tr>
<tr>
<td>dhcp_lease_time=120 </td>
<td>(IntOpt) Lifetime of a DHCP lease in
seconds.</td>
</tr>