openstack-manuals/doc/config-reference/source/tables/neutron-common.rst

Description of common configuration options

Configuration option = Default value	Description
[DEFAULT]
agent_down_time = 75	(Integer) Seconds to regard the agent is down; should be at least twice report_interval, to be sure the agent is down for good.
allow_automatic_dhcp_failover = True	(Boolean) Automatically remove networks from offline DHCP agents.
allow_automatic_l3agent_failover = False	(Boolean) Automatically reschedule routers from offline L3 agents to online L3 agents.
api_workers = None	(Integer) Number of separate API worker processes for service. If not specified, the default is equal to the number of CPUs available for best performance.
auth_ca_cert = None	(String) Certificate Authority public key (CA cert) file for ssl
auth_strategy = keystone	(String) The type of authentication to use
base_mac = fa:16:3e:00:00:00	(String) The base MAC address Neutron will use for VIFs. The first 3 octets will remain unchanged. If the 4th octet is not 00, it will also be used. The others will be randomly generated.
bgp_drscheduler_driver = neutron.services.bgp.scheduler.bgp_dragent_scheduler.ChanceScheduler	(String) Driver used for scheduling BGP speakers to BGP DrAgent
bind_host = 0.0.0.0	(String) The host IP to bind to
bind_port = 9696	(Unknown) The port to bind to
core_plugin = None	(String) The core plugin Neutron will use
default_availability_zones =	(List) Default value of availability zone hints. The availability zone aware schedulers use this when the resources availability_zone_hints is empty. Multiple availability zones can be specified by a comma separated string. This value can be empty. In this case, even if availability_zone_hints for a resource is empty, availability zone is considered for high availability while scheduling the resource.
default_ipv4_subnet_pool = None	(String) DEPRECATED: Default IPv4 subnet pool to be used for automatic subnet CIDR allocation. Specifies by UUID the pool to be used in case where creation of a subnet is being called without a subnet pool ID. If not set then no pool will be used unless passed explicitly to the subnet create. If no pool is used, then a CIDR must be passed to create a subnet and that subnet will not be allocated from any pool; it will be considered part of the tenant's private address space. This option is deprecated for removal in the N release.
default_ipv6_subnet_pool = None	(String) DEPRECATED: Default IPv6 subnet pool to be used for automatic subnet CIDR allocation. Specifies by UUID the pool to be used in case where creation of a subnet is being called without a subnet pool ID. See the description for default_ipv4_subnet_pool for more information. This option is deprecated for removal in the N release.
dhcp_agent_notification = True	(Boolean) Allow sending resource operation notification to DHCP agent
dhcp_agents_per_network = 1	(Integer) Number of DHCP agents scheduled to host a tenant network. If this number is greater than 1, the scheduler automatically assigns multiple DHCP agents for a given tenant network, providing high availability for DHCP service.
dhcp_broadcast_reply = False	(Boolean) Use broadcast in DHCP replies.
dhcp_confs = $state_path/dhcp	(String) Location to store DHCP server config files.
dhcp_domain = openstacklocal	(String) DEPRECATED: Domain to use for building the hostnames. This option is deprecated. It has been moved to neutron.conf as dns_domain. It will be removed in a future release.
dhcp_lease_duration = 86400	(Integer) DHCP lease duration (in seconds). Use -1 to tell dnsmasq to use infinite lease times.
dhcp_load_type = networks	(String) Representing the resource type whose load is being reported by the agent. This can be "networks", "subnets" or "ports". When specified (Default is networks), the server will extract particular load sent as part of its agent configuration object from the agent report state, which is the number of resources being consumed, at every report_interval.dhcp_load_type can be used in combination with network_scheduler_driver = neutron.scheduler.dhcp_agent_scheduler.WeightScheduler When the network_scheduler_driver is WeightScheduler, dhcp_load_type can be configured to represent the choice for the resource being balanced. Example: dhcp_load_type=networks
dns_domain = openstacklocal	(String) Domain to use for building the hostnames
enable_new_agents = True	(Boolean) Agent starts with admin_state_up=False when enable_new_agents=False. In the case, user's resources will not be scheduled automatically to the agent until admin changes admin_state_up to True.
enable_services_on_agents_with_admin_state_down = False	(Boolean) Enable services on an agent with admin_state_up False. If this option is False, when admin_state_up of an agent is turned False, services on it will be disabled. Agents with admin_state_up False are not selected for automatic scheduling regardless of this option. But manual scheduling to such agents is available if this option is True.
executor_thread_pool_size = 64	(Integer) Size of executor thread pool.
external_dns_driver = None	(String) Driver for external DNS integration.
global_physnet_mtu = 1500	(Integer) MTU of the underlying physical network. Neutron uses this value to calculate MTU for all virtual network components. For flat and VLAN networks, neutron uses this value without modification. For overlay networks such as VXLAN, neutron automatically subtracts the overlay protocol overhead from this value. Defaults to 1500, the standard value for Ethernet.
ip_lib_force_root = False	(Boolean) Force ip_lib calls to use the root helper
ipam_driver = None	(String) Neutron IPAM (IP address management) driver to use. If ipam_driver is not set (default behavior), no IPAM driver is used. In order to use the reference implementation of Neutron IPAM driver, use 'internal'.
mac_generation_retries = 16	(Integer) How many times Neutron will retry MAC generation
max_allowed_address_pair = 10	(Integer) Maximum number of allowed address pairs
max_dns_nameservers = 5	(Integer) Maximum number of DNS nameservers per subnet
max_fixed_ips_per_port = 5	(Integer) DEPRECATED: Maximum number of fixed ips per port. This option is deprecated and will be removed in the N release.
max_rtr_adv_interval = 100	(Integer) MaxRtrAdvInterval setting for radvd.conf
max_subnet_host_routes = 20	(Integer) Maximum number of host routes per subnet
memcached_servers = None	(List) Memcached servers or None for in process cache.
min_rtr_adv_interval = 30	(Integer) MinRtrAdvInterval setting for radvd.conf
periodic_fuzzy_delay = 5	(Integer) Range of seconds to randomly delay when starting the periodic task scheduler to reduce stampeding. (Disable by setting to 0)
periodic_interval = 40	(Integer) Seconds between running periodic tasks
report_interval = 300	(Integer) Interval between two metering reports
state_path = /var/lib/neutron	(String) Where to store Neutron state files. This directory must be writable by the agent.
vlan_transparent = False	(Boolean) If True, then allow plugins that support it to create VLAN transparent networks.
web_framework = legacy	(String) This will choose the web framework in which to run the Neutron API server. 'pecan' is a new experiemental rewrite of the API server.
[AGENT]
check_child_processes_action = respawn	(String) Action to be executed when a child process dies
check_child_processes_interval = 60	(Integer) Interval between checks of child process liveness (seconds), use 0 to disable
log_agent_heartbeats = False	(Boolean) Log agent heartbeats
polling_interval = 2	(Integer) The number of seconds the agent will wait between polling for local device changes.
root_helper = sudo	(String) Root helper application. Use 'sudo neutron-rootwrap /etc/neutron/rootwrap.conf' to use the real root filter facility. Change to 'sudo' to skip the filtering and just run the command directly.
root_helper_daemon = None	(String) Root helper daemon application to use when possible.
[qos]
notification_drivers = message_queue	(List) Drivers list to use to send the update notification
[service_providers]
service_provider = []	(Multi-valued) Defines providers for advanced services using the format: <service_type>:<name>:<driver>[:default]