neutron.conf

DEFAULT

state_path

Type

string

Default

/var/lib/neutron

Where to store Neutron state files. This directory must be writable by the agent.

bind_host

Type

host address

Default

0.0.0.0

The host IP to bind to.

bind_port

Type

port number

Default

9696

Minimum Value

0

Maximum Value

65535

The port to bind to

api_extensions_path

Type

string

Default

''

The path for API extensions. Note that this can be a colon-separated list of paths. For example: api_extensions_path = extensions:/path/to/more/exts:/even/more/exts. The __path__ of neutron.extensions is appended to this, so if your extensions are in there you don’t need to specify them here.

auth_strategy

Type

string

Default

keystone

The type of authentication to use

core_plugin

Type

string

Default

<None>

The core plugin Neutron will use

service_plugins

Type

list

Default

[]

The service plugins Neutron will use

base_mac

Type

string

Default

fa:16:3e:00:00:00

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.

allow_bulk

Type

boolean

Default

True

Allow the usage of the bulk API

pagination_max_limit

Type

string

Default

-1

The maximum number of items returned in a single response, value was ‘infinite’ or negative integer means no limit

default_availability_zones

Type

list

Default

[]

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.

max_dns_nameservers

Type

integer

Default

5

Maximum number of DNS nameservers per subnet

max_subnet_host_routes

Type

integer

Default

20

Maximum number of host routes per subnet

ipv6_pd_enabled

Type

boolean

Default

False

Warning: This feature is experimental with low test coverage, and the Dibbler client which is used for this feature is no longer maintained! Enables IPv6 Prefix Delegation for automatic subnet CIDR allocation. Set to True to enable IPv6 Prefix Delegation for subnet allocation in a PD-capable environment. Users making subnet creation requests for IPv6 subnets without providing a CIDR or subnetpool ID will be given a CIDR via the Prefix Delegation mechanism. Note that enabling PD will override the behavior of the default IPv6 subnetpool.

dhcp_lease_duration

Type

integer

Default

86400

DHCP lease duration (in seconds). Use -1 to tell dnsmasq to use infinite lease times.

dns_domain

Type

string

Default

openstacklocal

Domain to use for building the hostnames

external_dns_driver

Type

string

Default

<None>

Driver for external DNS integration.

dhcp_agent_notification

Type

boolean

Default

True

Allow sending resource operation notification to DHCP agent

host

Type

host address

Default

example.domain

This option has a sample default set, which means that its actual default value may vary from the one documented above.

Hostname to be used by the Neutron server, agents and services running on this machine. All the agents and services running on this machine must use the same host value.

network_link_prefix

Type

string

Default

<None>

This string is prepended to the normal URL that is returned in links to the OpenStack Network API. If it is empty (the default), the URLs are returned unchanged.

notify_nova_on_port_status_changes

Type

boolean

Default

True

Send notification to nova when port status changes

notify_nova_on_port_data_changes

Type

boolean

Default

True

Send notification to nova when port data (fixed_ips/floatingip) changes so nova can update its cache.

send_events_interval

Type

integer

Default

2

Number of seconds between sending events to nova if there are any events to send.

setproctitle

Type

string

Default

on

Set process name to match child worker role. Available options are: ‘off’ - retains the previous behavior; ‘on’ - renames processes to ‘neutron-server: role (original string)’; ‘brief’ - renames the same as ‘on’, but without the original string, such as ‘neutron-server: role’.

ipam_driver

Type

string

Default

internal

Neutron IPAM (IP address management) driver to use. By default, the reference implementation of the Neutron IPAM driver is used.

vlan_transparent

Type

boolean

Default

False

If True, then allow plugins that support it to create VLAN transparent networks.

filter_validation

Type

boolean

Default

True

If True, then allow plugins to decide whether to perform validations on filter parameters. Filter validation is enabled if this config is turned on and it is supported by all plugins

global_physnet_mtu

Type

integer

Default

1500

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.

Deprecated Variations

Group	Name
ml2	segment_mtu

http_retries

Type

integer

Default

3

Minimum Value

0

Number of times client connections (nova, ironic) should be retried on a failed HTTP call. 0 (zero) means connection is attempted only once (not retried). Setting to any positive integer means that on failure the connection is retried that many times. For example, setting to 3 means total attempts to connect will be 4.

enable_traditional_dhcp

Type

boolean

Default

True

If False, neutron-server will disable the following DHCP-agent related functions:1. DHCP provisioning block 2. DHCP scheduler API extension 3. Network scheduling mechanism 4. DHCP RPC/notification

backlog

Type

integer

Default

4096

Number of backlog requests to configure the socket with

retry_until_window

Type

integer

Default

30

Number of seconds to keep retrying to listen

use_ssl

Type

boolean

Default

False

Enable SSL on the API server

periodic_interval

Type

integer

Default

40

Seconds between running periodic tasks.

api_workers

Type

integer

Default

<None>

Number of separate API worker processes for service. If not specified, the default is equal to the number of CPUs available for best performance, capped by potential RAM usage.

rpc_workers

Type

integer

Default

<None>

Number of RPC worker processes for service. If not specified, the default is equal to half the number of API workers.

rpc_state_report_workers

Type

integer

Default

1

Number of RPC worker processes dedicated to state reports queue.

periodic_fuzzy_delay

Type

integer

Default

5

Range of seconds to randomly delay when starting the periodic task scheduler to reduce stampeding. (Disable by setting to 0)

rpc_response_max_timeout

Type

integer

Default

600

Maximum seconds to wait for a response from an RPC call.

interface_driver

Type

string

Default

<None>

The driver used to manage the virtual interface.

metadata_proxy_socket

Type

string

Default

$state_path/metadata_proxy

Location for Metadata Proxy UNIX domain socket.

metadata_proxy_user

Type

string

Default

''

User (uid or name) running metadata proxy after its initialization (if empty: agent effective user).

metadata_proxy_group

Type

string

Default

''

Group (gid or name) running metadata proxy after its initialization (if empty: agent effective group).

agent_down_time

Type

integer

Default

75

Maximum Value

2147483.0

Seconds to regard the agent is down; should be at least twice report_interval, to be sure the agent is down for good.

dhcp_load_type

Type

string

Default

networks

Valid Values

networks, subnets, ports

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

enable_new_agents

Type

boolean

Default

True

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.

rpc_resources_processing_step

Type

integer

Default

20

Minimum Value

1

Number of resources for neutron to divide the large RPC call data sets. It can be reduced if RPC timeout occurred. The best value can be determined empirically in your environment.

max_routes

Type

integer

Default

30

Maximum number of routes per router

enable_snat_by_default

Type

boolean

Default

True

Define the default value of enable_snat if not provided in external_gateway_info.

network_scheduler_driver

Type

string

Default

neutron.scheduler.dhcp_agent_scheduler.WeightScheduler

Driver to use for scheduling network to DHCP agent

network_auto_schedule

Type

boolean

Default

True

Allow auto scheduling networks to DHCP agent.

allow_automatic_dhcp_failover

Type

boolean

Default

True

Automatically remove networks from offline DHCP agents.

dhcp_agents_per_network

Type

integer

Default

1

Minimum Value

1

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 the DHCP service. However this does not provide high availability for the IPv6 metadata service in isolated networks.

enable_services_on_agents_with_admin_state_down

Type

boolean

Default

False

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.

dvr_base_mac

Type

string

Default

fa:16:3f:00:00:00

The base mac address used for unique DVR instances by Neutron. 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. The ‘dvr_base_mac’ must be different from ‘base_mac’ to avoid mixing them up with MAC’s allocated for tenant ports. A 4 octet example would be dvr_base_mac = fa:16:3f:4f:00:00. The default is 3 octet

router_distributed

Type

boolean

Default

False

System-wide flag to determine the type of router that tenants can create. Only admin can override.

enable_dvr

Type

boolean

Default

True

Determine if setup is configured for DVR. If False, DVR API extension will be disabled.

host_dvr_for_dhcp

Type

boolean

Default

True

Flag to determine if hosting a DVR local router to the DHCP agent is desired. If False, any L3 function supported by the DHCP agent instance will not be possible, for instance: DNS.

router_scheduler_driver

Type

string

Default

neutron.scheduler.l3_agent_scheduler.LeastRoutersScheduler

Driver to use for scheduling router to a default L3 agent

router_auto_schedule

Type

boolean

Default

True

Allow auto scheduling of routers to L3 agent.

allow_automatic_l3agent_failover

Type

boolean

Default

False

Automatically reschedule routers from offline L3 agents to online L3 agents.

l3_ha

Type

boolean

Default

False

Enable HA mode for virtual routers.

max_l3_agents_per_router

Type

integer

Default

3

Maximum number of L3 agents which a HA router will be scheduled on. If it is set to 0 then the router will be scheduled on every agent.

l3_ha_net_cidr

Type

string

Default

169.254.192.0/18

Subnet used for the l3 HA admin network.

l3_ha_network_type

Type

string

Default

''

The network type to use when creating the HA network for an HA router. By default or if empty, the first ‘tenant_network_types’ is used. This is helpful when the VRRP traffic should use a specific network which is not the default one.

l3_ha_network_physical_name

Type

string

Default

''

The physical network name with which the HA network can be created.

max_allowed_address_pair

Type

integer

Default

10

Maximum number of allowed address pairs

allowed_conntrack_helpers

Type

list

Default

[{'tftp': 'udp'}, {'ftp': 'tcp'}, {'sip': 'tcp'}, {'sip': 'udp'}]

This option has a sample default set, which means that its actual default value may vary from the one documented above.

Defines the allowed conntrack helpers, and conntack helper module protocol constraints.

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 set to “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 [%(global_request_id)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 %(project)s %(domain)s %(system_scope)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.

run_external_periodic_tasks

Type

boolean

Default

True

Some periodic tasks can be run in a separate process. Should we run them here?

backdoor_port

Type

string

Default

<None>

Enable eventlet backdoor. Acceptable values are 0, <port>, and <start>:<end>, where 0 results in listening on a random tcp port number; <port> results in listening on the specified port number (and not enabling backdoor if that port is in use); and <start>:<end> results in listening on the smallest unused port number within the specified range of port numbers. The chosen port is displayed in the service’s log file.

backdoor_socket

Type

string

Default

<None>

Enable eventlet backdoor, using the provided path as a unix socket that can receive connections. This option is mutually exclusive with ‘backdoor_port’ in that only one should be provided. If both are provided then the existence of this option overrides the usage of that option. Inside the path {pid} will be replaced with the PID of the current process.

log_options

Type

boolean

Default

True

Enables or disables logging values of all registered options when starting a service (at DEBUG level).

graceful_shutdown_timeout

Type

integer

Default

60

Specify a timeout after which a gracefully shutdown server will exit. Zero value means endless wait.

api_paste_config

Type

string

Default

api-paste.ini

File name for the paste.deploy config for api service

wsgi_log_format

Type

string

Default

%(client_ip)s "%(request_line)s" status: %(status_code)s  len: %(body_length)s time: %(wall_seconds).7f

A python format string that is used as the template to generate log lines. The following values can beformatted into it: client_ip, date_time, request_line, status_code, body_length, wall_seconds.

tcp_keepidle

Type

integer

Default

600

Sets the value of TCP_KEEPIDLE in seconds for each server socket. Not supported on OS X.

wsgi_default_pool_size

Type

integer

Default

100

Size of the pool of greenthreads used by wsgi

max_header_line

Type

integer

Default

16384

Maximum line size of message headers to be accepted. max_header_line may need to be increased when using large tokens (typically those generated when keystone is configured to use PKI tokens with big service catalogs).

wsgi_keep_alive

Type

boolean

Default

True

If False, closes the client socket connection explicitly.

client_socket_timeout

Type

integer

Default

900

Timeout for client connections’ socket operations. If an incoming connection is idle for this number of seconds it will be closed. A value of ‘0’ means wait forever.

wsgi_server_debug

Type

boolean

Default

False

True if the server should send exception tracebacks to the clients on 500 errors. If False, the server will respond with empty bodies.

rpc_conn_pool_size

Type

integer

Default

30

Minimum Value

1

Size of RPC connection pool.

Deprecated Variations

Group	Name
DEFAULT	rpc_conn_pool_size

conn_pool_min_size

Type

integer

Default

2

The pool size limit for connections expiration policy

conn_pool_ttl

Type

integer

Default

1200

The time-to-live in sec of idle connections in the pool

executor_thread_pool_size

Type

integer

Default

64

Size of executor thread pool when executor is threading or eventlet.

Deprecated Variations

Group	Name
DEFAULT	rpc_thread_pool_size

rpc_response_timeout

Type

integer

Default

60

Seconds to wait for a response from a call.

transport_url

Type

string

Default

rabbit://

The network address and optional user credentials for connecting to the messaging backend, in URL format. The expected format is:

driver://[user:pass@]host:port[,[userN:passN@]hostN:portN]/virtual_host?query

Example: rabbit://rabbitmq:password@127.0.0.1:5672//

For full details on the fields in the URL see the documentation of oslo_messaging.TransportURL at https://docs.openstack.org/oslo.messaging/latest/reference/transport.html

control_exchange

Type

string

Default

openstack

The default exchange under which topics are scoped. May be overridden by an exchange name specified in the transport_url option.

rpc_ping_enabled

Type

boolean

Default

False

Add an endpoint to answer to ping calls. Endpoint is named oslo_rpc_server_ping

agent

root_helper

Type

string

Default

sudo

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.

use_helper_for_ns_read

Type

boolean

Default

True

Use the root helper when listing the namespaces on a system. This may not be required depending on the security configuration. If the root helper is not required, set this to False for a performance improvement.

root_helper_daemon

Type

string

Default

<None>

Root helper daemon application to use when possible.

Use ‘sudo neutron-rootwrap-daemon /etc/neutron/rootwrap.conf’ to run rootwrap in “daemon mode” which has been reported to improve performance at scale. For more information on running rootwrap in “daemon mode”, see:

https://docs.openstack.org/oslo.rootwrap/latest/user/usage.html#daemon-mode

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

comment_iptables_rules

Type

boolean

Default

True

Add comments to iptables rules. Set to false to disallow the addition of comments to generated iptables rules that describe each rule’s purpose. System must support the iptables comments module for addition of comments.

debug_iptables_rules

Type

boolean

Default

False

Duplicate every iptables difference calculation to ensure the format being generated matches the format of iptables-save. This option should not be turned on for production systems because it imposes a performance penalty.

use_random_fully

Type

boolean

Default

True

Use random-fully in SNAT masquerade rules.

check_child_processes_action

Type

string

Default

respawn

Valid Values

respawn, exit

Action to be executed when a child process dies

check_child_processes_interval

Type

integer

Default

60

Interval between checks of child process liveness (seconds), use 0 to disable

kill_scripts_path

Type

string

Default

/etc/neutron/kill_scripts/

Location of scripts used to kill external processes. Names of scripts here must follow the pattern: “<process-name>-kill” where <process-name> is name of the process which should be killed using this script. For example, kill script for dnsmasq process should be named “dnsmasq-kill”. If path is set to None, then default “kill” command will be used to stop processes.

availability_zone

Type

string

Default

nova

Availability zone of this node

cache

config_prefix

Type

string

Default

cache.oslo

Prefix for building the configuration dictionary for the cache region. This should not need to be changed unless there is another dogpile.cache region with the same configuration name.

expiration_time

Type

integer

Default

600

Default TTL, in seconds, for any cached item in the dogpile.cache region. This applies to any cached method that doesn’t have an explicit cache expiration time defined for it.

backend

Type

string

Default

dogpile.cache.null

Valid Values

oslo_cache.memcache_pool, oslo_cache.dict, oslo_cache.mongo, oslo_cache.etcd3gw, dogpile.cache.pymemcache, dogpile.cache.memcached, dogpile.cache.pylibmc, dogpile.cache.bmemcached, dogpile.cache.dbm, dogpile.cache.redis, dogpile.cache.memory, dogpile.cache.memory_pickle, dogpile.cache.null

Cache backend module. For eventlet-based or environments with hundreds of threaded servers, Memcache with pooling (oslo_cache.memcache_pool) is recommended. For environments with less than 100 threaded servers, Memcached (dogpile.cache.memcached) or Redis (dogpile.cache.redis) is recommended. Test environments with a single instance of the server can use the dogpile.cache.memory backend.

backend_argument

Type

multi-valued

Default

''

Arguments supplied to the backend module. Specify this option once per argument to be passed to the dogpile.cache backend. Example format: “<argname>:<value>”.

proxies

Type

list

Default

[]

Proxy classes to import that will affect the way the dogpile.cache backend functions. See the dogpile.cache documentation on changing-backend-behavior.

enabled

Type

boolean

Default

False

Global toggle for caching.

debug_cache_backend

Type

boolean

Default

False

Extra debugging from the cache backend (cache keys, get/set/delete/etc calls). This is only really useful if you need to see the specific cache-backend get/set/delete calls with the keys/values. Typically this should be left set to false.

memcache_servers

Type

list

Default

['localhost:11211']

Memcache servers in the format of “host:port”. This is used by backends dependent on Memcached.If dogpile.cache.memcached or oslo_cache.memcache_pool is used and a given host refer to an IPv6 or a given domain refer to IPv6 then you should prefix the given address withthe address family (inet6) (e.g inet6[::1]:11211, inet6:[fd12:3456:789a:1::1]:11211, inet6:[controller-0.internalapi]:11211). If the address family is not given then these backends will use the default inet address family which corresponds to IPv4

memcache_dead_retry

Type

integer

Default

300

Number of seconds memcached server is considered dead before it is tried again. (dogpile.cache.memcache and oslo_cache.memcache_pool backends only).

memcache_socket_timeout

Type

floating point

Default

1.0

Timeout in seconds for every call to a server. (dogpile.cache.memcache and oslo_cache.memcache_pool backends only).

memcache_pool_maxsize

Type

integer

Default

10

Max total number of open connections to every memcached server. (oslo_cache.memcache_pool backend only).

memcache_pool_unused_timeout

Type

integer

Default

60

Number of seconds a connection to memcached is held unused in the pool before it is closed. (oslo_cache.memcache_pool backend only).

memcache_pool_connection_get_timeout

Type

integer

Default

10

Number of seconds that an operation will wait to get a memcache client connection.

memcache_pool_flush_on_reconnect

Type

boolean

Default

False

Global toggle if memcache will be flushed on reconnect. (oslo_cache.memcache_pool backend only).

memcache_sasl_enabled

Type

boolean

Default

False

Enable the SASL(Simple Authentication and SecurityLayer) if the SASL_enable is true, else disable.

memcache_username

Type

string

Default

''

the user name for the memcached which SASL enabled

memcache_password

Type

string

Default

''

the password for the memcached which SASL enabled

tls_enabled

Type

boolean

Default

False

Global toggle for TLS usage when comunicating with the caching servers.

tls_cafile

Type

string

Default

<None>

Path to a file of concatenated CA certificates in PEM format necessary to establish the caching servers’ authenticity. If tls_enabled is False, this option is ignored.

tls_certfile

Type

string

Default

<None>

Path to a single file in PEM format containing the client’s certificate as well as any number of CA certificates needed to establish the certificate’s authenticity. This file is only required when client side authentication is necessary. If tls_enabled is False, this option is ignored.

tls_keyfile

Type

string

Default

<None>

Path to a single file containing the client’s private key in. Otherwise the private key will be taken from the file specified in tls_certfile. If tls_enabled is False, this option is ignored.

tls_allowed_ciphers

Type

string

Default

<None>

Set the available ciphers for sockets created with the TLS context. It should be a string in the OpenSSL cipher list format. If not specified, all OpenSSL enabled ciphers will be available.

enable_socket_keepalive

Type

boolean

Default

False

Global toggle for the socket keepalive of dogpile’s pymemcache backend

socket_keepalive_idle

Type

integer

Default

1

Minimum Value

0

The time (in seconds) the connection needs to remain idle before TCP starts sending keepalive probes. Should be a positive integer most greater than zero.

socket_keepalive_interval

Type

integer

Default

1

Minimum Value

0

The time (in seconds) between individual keepalive probes. Should be a positive integer greater than zero.

socket_keepalive_count

Type

integer

Default

1

Minimum Value

0

The maximum number of keepalive probes TCP should send before dropping the connection. Should be a positive integer greater than zero.

enable_retry_client

Type

boolean

Default

False

Enable retry client mechanisms to handle failure. Those mechanisms can be used to wrap all kind of pymemcache clients. The wrapper allows you to define how many attempts to make and how long to wait between attemots.

retry_attempts

Type

integer

Default

2

Minimum Value

1

Number of times to attempt an action before failing.

retry_delay

Type

floating point

Default

0

Number of seconds to sleep between each attempt.

hashclient_retry_attempts

Type

integer

Default

2

Minimum Value

1

Amount of times a client should be tried before it is marked dead and removed from the pool in the HashClient’s internal mechanisms.

hashclient_retry_delay

Type

floating point

Default

1

Time in seconds that should pass between retry attempts in the HashClient’s internal mechanisms.

dead_timeout

Type

floating point

Default

60

Time in seconds before attempting to add a node back in the pool in the HashClient’s internal mechanisms.

cors

allowed_origin

Type

list

Default

<None>

Indicate whether this resource may be shared with the domain received in the requests “origin” header. Format: “<protocol>://<host>[:<port>]”, no trailing slash. Example: https://horizon.example.com

allow_credentials

Type

boolean

Default

True

Indicate that the actual request can include user credentials

expose_headers

Type

list

Default

['X-Auth-Token', 'X-Subject-Token', 'X-Service-Token', 'X-OpenStack-Request-ID', 'OpenStack-Volume-microversion']

Indicate which headers are safe to expose to the API. Defaults to HTTP Simple Headers.

max_age

Type

integer

Default

3600

Maximum cache age of CORS preflight requests.

allow_methods

Type

list

Default

['GET', 'PUT', 'POST', 'DELETE', 'PATCH']

Indicate which methods can be used during the actual request.

allow_headers

Type

list

Default

['X-Auth-Token', 'X-Identity-Status', 'X-Roles', 'X-Service-Catalog', 'X-User-Id', 'X-Tenant-Id', 'X-OpenStack-Request-ID']

Indicate which header field names may be used during the actual request.

database

engine

Type

string

Default

''

Database engine for which script will be generated when using offline migration.

sqlite_synchronous

Type

boolean

Default

True

If True, SQLite uses synchronous mode.

Deprecated Variations

Group	Name
DEFAULT	sqlite_synchronous

backend

Type

string

Default

sqlalchemy

The back end to use for the database.

Deprecated Variations

Group	Name
DEFAULT	db_backend

connection

Type

string

Default

<None>

The SQLAlchemy connection string to use to connect to the database.

Deprecated Variations

Group	Name
DEFAULT	sql_connection
DATABASE	sql_connection
sql	connection

slave_connection

Type

string

Default

<None>

The SQLAlchemy connection string to use to connect to the slave database.

mysql_sql_mode

Type

string

Default

TRADITIONAL

The SQL mode to be used for MySQL sessions. This option, including the default, overrides any server-set SQL mode. To use whatever SQL mode is set by the server configuration, set this to no value. Example: mysql_sql_mode=

mysql_enable_ndb

Type

boolean

Default

False

If True, transparently enables support for handling MySQL Cluster (NDB).

connection_recycle_time

Type

integer

Default

3600

Connections which have been present in the connection pool longer than this number of seconds will be replaced with a new one the next time they are checked out from the pool.

max_pool_size

Type

integer

Default

5

Maximum number of SQL connections to keep open in a pool. Setting a value of 0 indicates no limit.

max_retries

Type

integer

Default

10

Maximum number of database connection retries during startup. Set to -1 to specify an infinite retry count.

Deprecated Variations

Group	Name
DEFAULT	sql_max_retries
DATABASE	sql_max_retries

retry_interval

Type

integer

Default

10

Interval between retries of opening a SQL connection.

Deprecated Variations

Group	Name
DEFAULT	sql_retry_interval
DATABASE	reconnect_interval

max_overflow

Type

integer

Default

50

If set, use this value for max_overflow with SQLAlchemy.

Deprecated Variations

Group	Name
DEFAULT	sql_max_overflow
DATABASE	sqlalchemy_max_overflow

connection_debug

Type

integer

Default

0

Minimum Value

0

Maximum Value

100

Verbosity of SQL debugging information: 0=None, 100=Everything.

Deprecated Variations

Group	Name
DEFAULT	sql_connection_debug

connection_trace

Type

boolean

Default

False

Add Python stack traces to SQL as comment strings.

Deprecated Variations

Group	Name
DEFAULT	sql_connection_trace

pool_timeout

Type

integer

Default

<None>

If set, use this value for pool_timeout with SQLAlchemy.

Deprecated Variations

Group	Name
DATABASE	sqlalchemy_pool_timeout

use_db_reconnect

Type

boolean

Default

False

Enable the experimental use of database reconnect on connection lost.

db_retry_interval

Type

integer

Default

1

Seconds between retries of a database transaction.

db_inc_retry_interval

Type

boolean

Default

True

If True, increases the interval between retries of a database operation up to db_max_retry_interval.

db_max_retry_interval

Type

integer

Default

10

If db_inc_retry_interval is set, the maximum seconds between retries of a database operation.

db_max_retries

Type

integer

Default

20

Maximum retries in case of connection error or deadlock error before error is raised. Set to -1 to specify an infinite retry count.

connection_parameters

Type

string

Default

''

Optional URL parameters to append onto the connection URL at connect time; specify as param1=value1&param2=value2&…

experimental

linuxbridge

Type

boolean

Default

False

Enable execution of the experimental Linuxbridge agent.

healthcheck

path

Type

string

Default

/healthcheck

The path to respond to healtcheck requests on.

Warning

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

detailed

Type

boolean

Default

False

Show more detailed information as part of the response. Security note: Enabling this option may expose sensitive details about the service being monitored. Be sure to verify that it will not violate your security policies.

backends

Type

list

Default

[]

Additional backends that can perform health checks and report that information back as part of a request.

disable_by_file_path

Type

string

Default

<None>

Check the presence of a file to determine if an application is running on a port. Used by DisableByFileHealthcheck plugin.

disable_by_file_paths

Type

list

Default

[]

Check the presence of a file based on a port to determine if an application is running on a port. Expects a “port:path” list of strings. Used by DisableByFilesPortsHealthcheck plugin.

ironic

auth_url

Type

unknown type

Default

<None>

Authentication URL

auth_type

Type

unknown type

Default

<None>

Authentication type to load

Deprecated Variations

Group	Name
ironic	auth_plugin

cafile

Type

string

Default

<None>

PEM encoded Certificate Authority to use when verifying HTTPs connections.

certfile

Type

string

Default

<None>

PEM encoded client certificate cert file

collect_timing

Type

boolean

Default

False

Collect per-API call timing information.

default_domain_id

Type

unknown type

Default

<None>

Optional domain ID to use with v3 and v2 parameters. It will be used for both the user and project domain in v3 and ignored in v2 authentication.

default_domain_name

Type

unknown type

Default

<None>

Optional domain name to use with v3 API and v2 parameters. It will be used for both the user and project domain in v3 and ignored in v2 authentication.

domain_id

Type

unknown type

Default

<None>

Domain ID to scope to

domain_name

Type

unknown type

Default

<None>

Domain name to scope to

insecure

Type

boolean

Default

False

Verify HTTPS connections.

keyfile

Type

string

Default

<None>

PEM encoded client certificate key file

password

Type

unknown type

Default

<None>

User’s password

project_domain_id

Type

unknown type

Default

<None>

Domain ID containing project

project_domain_name

Type

unknown type

Default

<None>

Domain name containing project

project_id

Type

unknown type

Default

<None>

Project ID to scope to

Deprecated Variations

Group	Name
ironic	tenant-id
ironic	tenant_id

project_name

Type

unknown type

Default

<None>

Project name to scope to

Deprecated Variations

Group	Name
ironic	tenant-name
ironic	tenant_name

split_loggers

Type

boolean

Default

False

Log requests to multiple loggers.

system_scope

Type

unknown type

Default

<None>

Scope for system operations

tenant_id

Type

unknown type

Default

<None>

Tenant ID

tenant_name

Type

unknown type

Default

<None>

Tenant Name

timeout

Type

integer

Default

<None>

Timeout value for http requests

trust_id

Type

unknown type

Default

<None>

ID of the trust to use as a trustee use

user_domain_id

Type

unknown type

Default

<None>

User’s domain id

user_domain_name

Type

unknown type

Default

<None>

User’s domain name

user_id

Type

unknown type

Default

<None>

User id

username

Type

unknown type

Default

<None>

Username

Deprecated Variations

Group	Name
ironic	user-name
ironic	user_name

enable_notifications

Type

boolean

Default

False

Send notification events to ironic. (For example on relevant port status changes.)

keystone_authtoken

www_authenticate_uri

Type

string

Default

<None>

Complete “public” Identity API endpoint. This endpoint should not be an “admin” endpoint, as it should be accessible by all end users. Unauthenticated clients are redirected to this endpoint to authenticate. Although this endpoint should ideally be unversioned, client support in the wild varies. If you’re using a versioned v2 endpoint here, then this should not be the same endpoint the service user utilizes for validating tokens, because normal end users may not be able to reach that endpoint.

Deprecated Variations

Group	Name
keystone_authtoken	auth_uri

auth_uri

Type

string

Default

<None>

Complete “public” Identity API endpoint. This endpoint should not be an “admin” endpoint, as it should be accessible by all end users. Unauthenticated clients are redirected to this endpoint to authenticate. Although this endpoint should ideally be unversioned, client support in the wild varies. If you’re using a versioned v2 endpoint here, then this should not be the same endpoint the service user utilizes for validating tokens, because normal end users may not be able to reach that endpoint. This option is deprecated in favor of www_authenticate_uri and will be removed in the S release.

Warning

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

Reason

The auth_uri option is deprecated in favor of www_authenticate_uri and will be removed in the S release.

auth_version

Type

string

Default

<None>

API version of the Identity API endpoint.

interface

Type

string

Default

internal

Interface to use for the Identity API endpoint. Valid values are “public”, “internal” (default) or “admin”.

delay_auth_decision

Type

boolean

Default

False

Do not handle authorization requests within the middleware, but delegate the authorization decision to downstream WSGI components.

http_connect_timeout

Type

integer

Default

<None>

Request timeout value for communicating with Identity API server.

http_request_max_retries

Type

integer

Default

3

How many times are we trying to reconnect when communicating with Identity API Server.

cache

Type

string

Default

<None>

Request environment key where the Swift cache object is stored. When auth_token middleware is deployed with a Swift cache, use this option to have the middleware share a caching backend with swift. Otherwise, use the memcached_servers option instead.

certfile

Type

string

Default

<None>

Required if identity server requires client certificate

keyfile

Type

string

Default

<None>

Required if identity server requires client certificate

cafile

Type

string

Default

<None>

A PEM encoded Certificate Authority to use when verifying HTTPs connections. Defaults to system CAs.

insecure

Type

boolean

Default

False

Verify HTTPS connections.

region_name

Type

string

Default

<None>

The region in which the identity server can be found.

memcached_servers

Type

list

Default

<None>

Optionally specify a list of memcached server(s) to use for caching. If left undefined, tokens will instead be cached in-process.

Deprecated Variations

Group	Name
keystone_authtoken	memcache_servers

token_cache_time

Type

integer

Default

300

In order to prevent excessive effort spent validating tokens, the middleware caches previously-seen tokens for a configurable duration (in seconds). Set to -1 to disable caching completely.

memcache_security_strategy

Type

string

Default

None

Valid Values

None, MAC, ENCRYPT

(Optional) If defined, indicate whether token data should be authenticated or authenticated and encrypted. If MAC, token data is authenticated (with HMAC) in the cache. If ENCRYPT, token data is encrypted and authenticated in the cache. If the value is not one of these options or empty, auth_token will raise an exception on initialization.

memcache_secret_key

Type

string

Default

<None>

(Optional, mandatory if memcache_security_strategy is defined) This string is used for key derivation.

memcache_pool_dead_retry

Type

integer

Default

300

(Optional) Number of seconds memcached server is considered dead before it is tried again.

memcache_pool_maxsize

Type

integer

Default

10

(Optional) Maximum total number of open connections to every memcached server.

memcache_pool_socket_timeout

Type

integer

Default

3

(Optional) Socket timeout in seconds for communicating with a memcached server.

memcache_pool_unused_timeout

Type

integer

Default

60

(Optional) Number of seconds a connection to memcached is held unused in the pool before it is closed.

memcache_pool_conn_get_timeout

Type

integer

Default

10

(Optional) Number of seconds that an operation will wait to get a memcached client connection from the pool.

memcache_use_advanced_pool

Type

boolean

Default

True

(Optional) Use the advanced (eventlet safe) memcached client pool.

include_service_catalog

Type

boolean

Default

True

(Optional) Indicate whether to set the X-Service-Catalog header. If False, middleware will not ask for service catalog on token validation and will not set the X-Service-Catalog header.

enforce_token_bind

Type

string

Default

permissive

Used to control the use and type of token binding. Can be set to: “disabled” to not check token binding. “permissive” (default) to validate binding information if the bind type is of a form known to the server and ignore it if not. “strict” like “permissive” but if the bind type is unknown the token will be rejected. “required” any form of token binding is needed to be allowed. Finally the name of a binding method that must be present in tokens.

service_token_roles

Type

list

Default

['service']

A choice of roles that must be present in a service token. Service tokens are allowed to request that an expired token can be used and so this check should tightly control that only actual services should be sending this token. Roles here are applied as an ANY check so any role in this list must be present. For backwards compatibility reasons this currently only affects the allow_expired check.

service_token_roles_required

Type

boolean

Default

False

For backwards compatibility reasons we must let valid service tokens pass that don’t pass the service_token_roles check as valid. Setting this true will become the default in a future release and should be enabled if possible.

service_type

Type

string

Default

<None>

The name or type of the service as it appears in the service catalog. This is used to validate tokens that have restricted access rules.

auth_type

Type

unknown type

Default

<None>

Authentication type to load

Deprecated Variations

Group	Name
keystone_authtoken	auth_plugin

auth_section

Type

unknown type

Default

<None>

Config Section from which to load plugin specific options

nova

region_name

Type

string

Default

<None>

Name of nova region to use. Useful if keystone manages more than one region.

endpoint_type

Type

string

Default

public

Valid Values

public, admin, internal

Type of the nova endpoint to use. This endpoint will be looked up in the keystone catalog and should be one of public, internal or admin.

auth_url

Type

unknown type

Default

<None>

Authentication URL

auth_type

Type

unknown type

Default

<None>

Authentication type to load

Deprecated Variations

Group	Name
nova	auth_plugin

cafile

Type

string

Default

<None>

PEM encoded Certificate Authority to use when verifying HTTPs connections.

certfile

Type

string

Default

<None>

PEM encoded client certificate cert file

collect_timing

Type

boolean

Default

False

Collect per-API call timing information.

default_domain_id

Type

unknown type

Default

<None>

Optional domain ID to use with v3 and v2 parameters. It will be used for both the user and project domain in v3 and ignored in v2 authentication.

default_domain_name

Type

unknown type

Default

<None>

Optional domain name to use with v3 API and v2 parameters. It will be used for both the user and project domain in v3 and ignored in v2 authentication.

domain_id

Type

unknown type

Default

<None>

Domain ID to scope to

domain_name

Type

unknown type

Default

<None>

Domain name to scope to

insecure

Type

boolean

Default

False

Verify HTTPS connections.

keyfile

Type

string

Default

<None>

PEM encoded client certificate key file

password

Type

unknown type

Default

<None>

User’s password

project_domain_id

Type

unknown type

Default

<None>

Domain ID containing project

project_domain_name

Type

unknown type

Default

<None>

Domain name containing project

project_id

Type

unknown type

Default

<None>

Project ID to scope to

Deprecated Variations

Group	Name
nova	tenant-id
nova	tenant_id

project_name

Type

unknown type

Default

<None>

Project name to scope to

Deprecated Variations

Group	Name
nova	tenant-name
nova	tenant_name

split_loggers

Type

boolean

Default

False

Log requests to multiple loggers.

system_scope

Type

unknown type

Default

<None>

Scope for system operations

tenant_id

Type

unknown type

Default

<None>

Tenant ID

tenant_name

Type

unknown type

Default

<None>

Tenant Name

timeout

Type

integer

Default

<None>

Timeout value for http requests

trust_id

Type

unknown type

Default

<None>

ID of the trust to use as a trustee use

user_domain_id

Type

unknown type

Default

<None>

User’s domain id

user_domain_name

Type

unknown type

Default

<None>

User’s domain name

user_id

Type

unknown type

Default

<None>

User id

username

Type

unknown type

Default

<None>

Username

Deprecated Variations

Group	Name
nova	user-name
nova	user_name

oslo_concurrency

disable_process_locking

Type

boolean

Default

False

Enables or disables inter-process locks.

Deprecated Variations

Group	Name
DEFAULT	disable_process_locking

lock_path

Type

string

Default

<None>

Directory to use for lock files. For security, the specified directory should only be writable by the user running the processes that need locking. Defaults to environment variable OSLO_LOCK_PATH. If external locks are used, a lock path must be set.

Deprecated Variations

Group	Name
DEFAULT	lock_path

oslo_messaging_amqp

container_name

Type

string

Default

<None>

Name for the AMQP container. must be globally unique. Defaults to a generated UUID

Deprecated Variations

Group	Name
amqp1	container_name

idle_timeout

Type

integer

Default

0

Timeout for inactive connections (in seconds)

Deprecated Variations

Group	Name
amqp1	idle_timeout

trace

Type

boolean

Default

False

Debug: dump AMQP frames to stdout

Deprecated Variations

Group	Name
amqp1	trace

ssl

Type

boolean

Default

False

Attempt to connect via SSL. If no other ssl-related parameters are given, it will use the system’s CA-bundle to verify the server’s certificate.

ssl_ca_file

Type

string

Default

''

CA certificate PEM file used to verify the server’s certificate

Deprecated Variations

Group	Name
amqp1	ssl_ca_file

ssl_cert_file

Type

string

Default

''

Self-identifying certificate PEM file for client authentication

Deprecated Variations

Group	Name
amqp1	ssl_cert_file

ssl_key_file

Type

string

Default

''

Private key PEM file used to sign ssl_cert_file certificate (optional)

Deprecated Variations

Group	Name
amqp1	ssl_key_file

ssl_key_password

Type

string

Default

<None>

Password for decrypting ssl_key_file (if encrypted)

Deprecated Variations

Group	Name
amqp1	ssl_key_password

ssl_verify_vhost

Type

boolean

Default

False

By default SSL checks that the name in the server’s certificate matches the hostname in the transport_url. In some configurations it may be preferable to use the virtual hostname instead, for example if the server uses the Server Name Indication TLS extension (rfc6066) to provide a certificate per virtual host. Set ssl_verify_vhost to True if the server’s SSL certificate uses the virtual host name instead of the DNS name.

sasl_mechanisms

Type

string

Default

''

Space separated list of acceptable SASL mechanisms

Deprecated Variations

Group	Name
amqp1	sasl_mechanisms

sasl_config_dir

Type

string

Default

''

Path to directory that contains the SASL configuration

Deprecated Variations

Group	Name
amqp1	sasl_config_dir

sasl_config_name

Type

string

Default

''

Name of configuration file (without .conf suffix)

Deprecated Variations

Group	Name
amqp1	sasl_config_name

sasl_default_realm

Type

string

Default

''

SASL realm to use if no realm present in username

connection_retry_interval

Type

integer

Default

1

Minimum Value

1

Seconds to pause before attempting to re-connect.

connection_retry_backoff

Type

integer

Default

2

Minimum Value

0

Increase the connection_retry_interval by this many seconds after each unsuccessful failover attempt.

connection_retry_interval_max

Type

integer

Default

30

Minimum Value

1

Maximum limit for connection_retry_interval + connection_retry_backoff

link_retry_delay

Type

integer

Default

10

Minimum Value

1

Time to pause between re-connecting an AMQP 1.0 link that failed due to a recoverable error.

default_reply_retry

Type

integer

Default

0

Minimum Value

-1

The maximum number of attempts to re-send a reply message which failed due to a recoverable error.

default_reply_timeout

Type

integer

Default

30

Minimum Value

5

The deadline for an rpc reply message delivery.

default_send_timeout

Type

integer

Default

30

Minimum Value

5

The deadline for an rpc cast or call message delivery. Only used when caller does not provide a timeout expiry.

default_notify_timeout

Type

integer

Default

30

Minimum Value

5

The deadline for a sent notification message delivery. Only used when caller does not provide a timeout expiry.

default_sender_link_timeout

Type

integer

Default

600

Minimum Value

1

The duration to schedule a purge of idle sender links. Detach link after expiry.

addressing_mode

Type

string

Default

dynamic

Indicates the addressing mode used by the driver. Permitted values: ‘legacy’ - use legacy non-routable addressing ‘routable’ - use routable addresses ‘dynamic’ - use legacy addresses if the message bus does not support routing otherwise use routable addressing

pseudo_vhost

Type

boolean

Default

True

Enable virtual host support for those message buses that do not natively support virtual hosting (such as qpidd). When set to true the virtual host name will be added to all message bus addresses, effectively creating a private ‘subnet’ per virtual host. Set to False if the message bus supports virtual hosting using the ‘hostname’ field in the AMQP 1.0 Open performative as the name of the virtual host.

server_request_prefix

Type

string

Default

exclusive

address prefix used when sending to a specific server

Deprecated Variations

Group	Name
amqp1	server_request_prefix

broadcast_prefix

Type

string

Default

broadcast

address prefix used when broadcasting to all servers

Deprecated Variations

Group	Name
amqp1	broadcast_prefix

group_request_prefix

Type

string

Default

unicast

address prefix when sending to any server in group

Deprecated Variations

Group	Name
amqp1	group_request_prefix

rpc_address_prefix

Type

string

Default

openstack.org/om/rpc

Address prefix for all generated RPC addresses

notify_address_prefix

Type

string

Default

openstack.org/om/notify

Address prefix for all generated Notification addresses

multicast_address

Type

string

Default

multicast

Appended to the address prefix when sending a fanout message. Used by the message bus to identify fanout messages.

unicast_address

Type

string

Default

unicast

Appended to the address prefix when sending to a particular RPC/Notification server. Used by the message bus to identify messages sent to a single destination.

anycast_address

Type

string

Default

anycast

Appended to the address prefix when sending to a group of consumers. Used by the message bus to identify messages that should be delivered in a round-robin fashion across consumers.

default_notification_exchange

Type

string

Default

<None>

Exchange name used in notification addresses. Exchange name resolution precedence: Target.exchange if set else default_notification_exchange if set else control_exchange if set else ‘notify’

default_rpc_exchange

Type

string

Default

<None>

Exchange name used in RPC addresses. Exchange name resolution precedence: Target.exchange if set else default_rpc_exchange if set else control_exchange if set else ‘rpc’

reply_link_credit

Type

integer

Default

200

Minimum Value

1

Window size for incoming RPC Reply messages.

rpc_server_credit

Type

integer

Default

100

Minimum Value

1

Window size for incoming RPC Request messages

notify_server_credit

Type

integer

Default

100

Minimum Value

1

Window size for incoming Notification messages

pre_settled

Type

multi-valued

Default

rpc-cast

Default

rpc-reply

Send messages of this type pre-settled. Pre-settled messages will not receive acknowledgement from the peer. Note well: pre-settled messages may be silently discarded if the delivery fails. Permitted values: ‘rpc-call’ - send RPC Calls pre-settled ‘rpc-reply’- send RPC Replies pre-settled ‘rpc-cast’ - Send RPC Casts pre-settled ‘notify’ - Send Notifications pre-settled

oslo_messaging_kafka

kafka_max_fetch_bytes

Type

integer

Default

1048576

Max fetch bytes of Kafka consumer

kafka_consumer_timeout

Type

floating point

Default

1.0

Default timeout(s) for Kafka consumers

pool_size

Type

integer

Default

10

Pool Size for Kafka Consumers

Warning

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

Reason

Driver no longer uses connection pool.

conn_pool_min_size

Type

integer

Default

2

The pool size limit for connections expiration policy

Warning

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

Reason

Driver no longer uses connection pool.

conn_pool_ttl

Type

integer

Default

1200

The time-to-live in sec of idle connections in the pool

Warning

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

Reason

Driver no longer uses connection pool.

consumer_group

Type

string

Default

oslo_messaging_consumer

Group id for Kafka consumer. Consumers in one group will coordinate message consumption

producer_batch_timeout

Type

floating point

Default

0.0

Upper bound on the delay for KafkaProducer batching in seconds

producer_batch_size

Type

integer

Default

16384

Size of batch for the producer async send

compression_codec

Type

string

Default

none

Valid Values

none, gzip, snappy, lz4, zstd

The compression codec for all data generated by the producer. If not set, compression will not be used. Note that the allowed values of this depend on the kafka version

enable_auto_commit

Type

boolean

Default

False

Enable asynchronous consumer commits

max_poll_records

Type

integer

Default

500

The maximum number of records returned in a poll call

security_protocol

Type

string

Default

PLAINTEXT

Valid Values

PLAINTEXT, SASL_PLAINTEXT, SSL, SASL_SSL

Protocol used to communicate with brokers

sasl_mechanism

Type

string

Default

PLAIN

Mechanism when security protocol is SASL

ssl_cafile

Type

string

Default

''

CA certificate PEM file used to verify the server certificate

ssl_client_cert_file

Type

string

Default

''

Client certificate PEM file used for authentication.

ssl_client_key_file

Type

string

Default

''

Client key PEM file used for authentication.

ssl_client_key_password

Type

string

Default

''

Client key password file used for authentication.

oslo_messaging_notifications

driver

Type

multi-valued

Default

''

The Drivers(s) to handle sending notifications. Possible values are messaging, messagingv2, routing, log, test, noop

Deprecated Variations

Group	Name
DEFAULT	notification_driver

transport_url

Type

string

Default

<None>

A URL representing the messaging driver to use for notifications. If not set, we fall back to the same configuration used for RPC.

Deprecated Variations

Group	Name
DEFAULT	notification_transport_url

topics

Type

list

Default

['notifications']

AMQP topic used for OpenStack notifications.

Deprecated Variations

Group	Name
rpc_notifier2	topics
DEFAULT	notification_topics

retry

Type

integer

Default

-1

The maximum number of attempts to re-send a notification message which failed to be delivered due to a recoverable error. 0 - No retry, -1 - indefinite

oslo_messaging_rabbit

amqp_durable_queues

Type

boolean

Default

False

Use durable queues in AMQP. If rabbit_quorum_queue is enabled, queues will be durable and this value will be ignored.

amqp_auto_delete

Type

boolean

Default

False

Auto-delete queues in AMQP.

Deprecated Variations

Group	Name
DEFAULT	amqp_auto_delete

ssl

Type

boolean

Default

False

Connect over SSL.

Deprecated Variations

Group	Name
oslo_messaging_rabbit	rabbit_use_ssl

ssl_version

Type

string

Default

''

SSL version to use (valid only if SSL enabled). Valid values are TLSv1 and SSLv23. SSLv2, SSLv3, TLSv1_1, and TLSv1_2 may be available on some distributions.

Deprecated Variations

Group	Name
oslo_messaging_rabbit	kombu_ssl_version

ssl_key_file

Type

string

Default

''

SSL key file (valid only if SSL enabled).

Deprecated Variations

Group	Name
oslo_messaging_rabbit	kombu_ssl_keyfile

ssl_cert_file

Type

string

Default

''

SSL cert file (valid only if SSL enabled).

Deprecated Variations

Group	Name
oslo_messaging_rabbit	kombu_ssl_certfile

ssl_ca_file

Type

string

Default

''

SSL certification authority file (valid only if SSL enabled).

Deprecated Variations

Group	Name
oslo_messaging_rabbit	kombu_ssl_ca_certs

ssl_enforce_fips_mode

Type

boolean

Default

False

Global toggle for enforcing the OpenSSL FIPS mode. This feature requires Python support. This is available in Python 3.9 in all environments and may have been backported to older Python versions on select environments. If the Python executable used does not support OpenSSL FIPS mode, an exception will be raised.

heartbeat_in_pthread

Type

boolean

Default

False

Run the health check heartbeat thread through a native python thread by default. If this option is equal to False then the health check heartbeat will inherit the execution model from the parent process. For example if the parent process has monkey patched the stdlib by using eventlet/greenlet then the heartbeat will be run through a green thread. This option should be set to True only for the wsgi services.

kombu_reconnect_delay

Type

floating point

Default

1.0

Minimum Value

0.0

Maximum Value

4.5

How long to wait (in seconds) before reconnecting in response to an AMQP consumer cancel notification.

Deprecated Variations

Group	Name
DEFAULT	kombu_reconnect_delay

kombu_compression

Type

string

Default

<None>

EXPERIMENTAL: Possible values are: gzip, bz2. If not set compression will not be used. This option may not be available in future versions.

kombu_missing_consumer_retry_timeout

Type

integer

Default

60

How long to wait a missing client before abandoning to send it its replies. This value should not be longer than rpc_response_timeout.

Deprecated Variations

Group	Name
oslo_messaging_rabbit	kombu_reconnect_timeout

kombu_failover_strategy

Type

string

Default

round-robin

Valid Values

round-robin, shuffle

Determines how the next RabbitMQ node is chosen in case the one we are currently connected to becomes unavailable. Takes effect only if more than one RabbitMQ node is provided in config.

rabbit_login_method

Type

string

Default

AMQPLAIN

Valid Values

PLAIN, AMQPLAIN, EXTERNAL, RABBIT-CR-DEMO

The RabbitMQ login method.

Deprecated Variations

Group	Name
DEFAULT	rabbit_login_method

rabbit_retry_interval

Type

integer

Default

1

How frequently to retry connecting with RabbitMQ.

rabbit_retry_backoff

Type

integer

Default

2

How long to backoff for between retries when connecting to RabbitMQ.

Deprecated Variations

Group	Name
DEFAULT	rabbit_retry_backoff

rabbit_interval_max

Type

integer

Default

30

Maximum interval of RabbitMQ connection retries. Default is 30 seconds.

rabbit_ha_queues

Type

boolean

Default

False

Try to use HA queues in RabbitMQ (x-ha-policy: all). If you change this option, you must wipe the RabbitMQ database. In RabbitMQ 3.0, queue mirroring is no longer controlled by the x-ha-policy argument when declaring a queue. If you just want to make sure that all queues (except those with auto-generated names) are mirrored across all nodes, run: “rabbitmqctl set_policy HA ‘^(?!amq.).*’ ‘{“ha-mode”: “all”}’ “

Deprecated Variations

Group	Name
DEFAULT	rabbit_ha_queues

rabbit_quorum_queue

Type

boolean

Default

False

Use quorum queues in RabbitMQ (x-queue-type: quorum). The quorum queue is a modern queue type for RabbitMQ implementing a durable, replicated FIFO queue based on the Raft consensus algorithm. It is available as of RabbitMQ 3.8.0. If set this option will conflict with the HA queues (rabbit_ha_queues) aka mirrored queues, in other words the HA queues should be disabled, quorum queues durable by default so the amqp_durable_queues opion is ignored when this option enabled.

rabbit_quorum_delivery_limit

Type

integer

Default

0

Each time a message is redelivered to a consumer, a counter is incremented. Once the redelivery count exceeds the delivery limit the message gets dropped or dead-lettered (if a DLX exchange has been configured) Used only when rabbit_quorum_queue is enabled, Default 0 which means dont set a limit.

rabbit_quroum_max_memory_length

Type

integer

Default

0

By default all messages are maintained in memory if a quorum queue grows in length it can put memory pressure on a cluster. This option can limit the number of messages in the quorum queue. Used only when rabbit_quorum_queue is enabled, Default 0 which means dont set a limit.

rabbit_quroum_max_memory_bytes

Type

integer

Default

0

By default all messages are maintained in memory if a quorum queue grows in length it can put memory pressure on a cluster. This option can limit the number of memory bytes used by the quorum queue. Used only when rabbit_quorum_queue is enabled, Default 0 which means dont set a limit.

rabbit_transient_queues_ttl

Type

integer

Default

1800

Minimum Value

1

Positive integer representing duration in seconds for queue TTL (x-expires). Queues which are unused for the duration of the TTL are automatically deleted. The parameter affects only reply and fanout queues.

rabbit_qos_prefetch_count

Type

integer

Default

0

Specifies the number of messages to prefetch. Setting to zero allows unlimited messages.

heartbeat_timeout_threshold

Type

integer

Default

60

Number of seconds after which the Rabbit broker is considered down if heartbeat’s keep-alive fails (0 disables heartbeat).

heartbeat_rate

Type

integer

Default

2

How often times during the heartbeat_timeout_threshold we check the heartbeat.

direct_mandatory_flag

Type

boolean

Default

True

(DEPRECATED) Enable/Disable the RabbitMQ mandatory flag for direct send. The direct send is used as reply, so the MessageUndeliverable exception is raised in case the client queue does not exist.MessageUndeliverable exception will be used to loop for a timeout to lets a chance to sender to recover.This flag is deprecated and it will not be possible to deactivate this functionality anymore

Warning

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

Reason

Mandatory flag no longer deactivable.

enable_cancel_on_failover

Type

boolean

Default

False

Enable x-cancel-on-ha-failover flag so that rabbitmq server will cancel and notify consumerswhen queue is down

oslo_middleware

enable_proxy_headers_parsing

Type

boolean

Default

False

Whether the application is behind a proxy or not. This determines if the middleware should parse the headers or not.

oslo_policy

enforce_scope

Type

boolean

Default

False

This option controls whether or not to enforce scope when evaluating policies. If True, the scope of the token used in the request is compared to the scope_types of the policy being enforced. If the scopes do not match, an InvalidScope exception will be raised. If False, a message will be logged informing operators that policies are being invoked with mismatching scope.

enforce_new_defaults

Type

boolean

Default

False

This option controls whether or not to use old deprecated defaults when evaluating policies. If True, the old deprecated defaults are not going to be evaluated. This means if any existing token is allowed for old defaults but is disallowed for new defaults, it will be disallowed. It is encouraged to enable this flag along with the enforce_scope flag so that you can get the benefits of new defaults and scope_type together. If False, the deprecated policy check string is logically OR’d with the new policy check string, allowing for a graceful upgrade experience between releases with new policies, which is the default behavior.

policy_file

Type

string

Default

policy.yaml

The relative or absolute path of a file that maps roles to permissions for a given service. Relative paths must be specified in relation to the configuration file setting this option.

Deprecated Variations

Group	Name
DEFAULT	policy_file

policy_default_rule

Type

string

Default

default

Default rule. Enforced when a requested rule is not found.

Deprecated Variations

Group	Name
DEFAULT	policy_default_rule

policy_dirs

Type

multi-valued

Default

policy.d

Directories where policy configuration files are stored. They can be relative to any directory in the search path defined by the config_dir option, or absolute paths. The file defined by policy_file must exist for these directories to be searched. Missing or empty directories are ignored.

Deprecated Variations

Group	Name
DEFAULT	policy_dirs

remote_content_type

Type

string

Default

application/x-www-form-urlencoded

Valid Values

application/x-www-form-urlencoded, application/json

Content Type to send and receive data for REST based policy check

remote_ssl_verify_server_crt

Type

boolean

Default

False

server identity verification for REST based policy check

remote_ssl_ca_crt_file

Type

string

Default

<None>

Absolute path to ca cert file for REST based policy check

remote_ssl_client_crt_file

Type

string

Default

<None>

Absolute path to client cert for REST based policy check

remote_ssl_client_key_file

Type

string

Default

<None>

Absolute path client key file REST based policy check

oslo_reports

log_dir

Type

string

Default

<None>

Path to a log directory where to create a file

file_event_handler

Type

string

Default

<None>

The path to a file to watch for changes to trigger the reports, instead of signals. Setting this option disables the signal trigger for the reports. If application is running as a WSGI application it is recommended to use this instead of signals.

file_event_handler_interval

Type

integer

Default

1

How many seconds to wait between polls when file_event_handler is set

placement

region_name

Type

string

Default

<None>

Name of placement region to use. Useful if keystone manages more than one region.

endpoint_type

Type

string

Default

public

Valid Values

public, admin, internal

Type of the placement endpoint to use. This endpoint will be looked up in the keystone catalog and should be one of public, internal or admin.

auth_url

Type

unknown type

Default

<None>

Authentication URL

auth_type

Type

unknown type

Default

<None>

Authentication type to load

Deprecated Variations

Group	Name
placement	auth_plugin

cafile

Type

string

Default

<None>

PEM encoded Certificate Authority to use when verifying HTTPs connections.

certfile

Type

string

Default

<None>

PEM encoded client certificate cert file

collect_timing

Type

boolean

Default

False

Collect per-API call timing information.

default_domain_id

Type

unknown type

Default

<None>

Optional domain ID to use with v3 and v2 parameters. It will be used for both the user and project domain in v3 and ignored in v2 authentication.

default_domain_name

Type

unknown type

Default

<None>

Optional domain name to use with v3 API and v2 parameters. It will be used for both the user and project domain in v3 and ignored in v2 authentication.

domain_id

Type

unknown type

Default

<None>

Domain ID to scope to

domain_name

Type

unknown type

Default

<None>

Domain name to scope to

insecure

Type

boolean

Default

False

Verify HTTPS connections.

keyfile

Type

string

Default

<None>

PEM encoded client certificate key file

password

Type

unknown type

Default

<None>

User’s password

project_domain_id

Type

unknown type

Default

<None>

Domain ID containing project

project_domain_name

Type

unknown type

Default

<None>

Domain name containing project

project_id

Type

unknown type

Default

<None>

Project ID to scope to

Deprecated Variations

Group	Name
placement	tenant-id
placement	tenant_id

project_name

Type

unknown type

Default

<None>

Project name to scope to

Deprecated Variations

Group	Name
placement	tenant-name
placement	tenant_name

split_loggers

Type

boolean

Default

False

Log requests to multiple loggers.

system_scope

Type

unknown type

Default

<None>

Scope for system operations

tenant_id

Type

unknown type

Default

<None>

Tenant ID

tenant_name

Type

unknown type

Default

<None>

Tenant Name

timeout

Type

integer

Default

<None>

Timeout value for http requests

trust_id

Type

unknown type

Default

<None>

ID of the trust to use as a trustee use

user_domain_id

Type

unknown type

Default

<None>

User’s domain id

user_domain_name

Type

unknown type

Default

<None>

User’s domain name

user_id

Type

unknown type

Default

<None>

User id

username

Type

unknown type

Default

<None>

Username

Deprecated Variations

Group	Name
placement	user-name
placement	user_name

privsep

Configuration options for the oslo.privsep daemon. Note that this group name can be changed by the consuming service. Check the service’s docs to see if this is the case.

user

Type

string

Default

<None>

User that the privsep daemon should run as.

group

Type

string

Default

<None>

Group that the privsep daemon should run as.

capabilities

Type

unknown type

Default

[]

List of Linux capabilities retained by the privsep daemon.

thread_pool_size

Type

integer

Default

multiprocessing.cpu_count()

Minimum Value

1

This option has a sample default set, which means that its actual default value may vary from the one documented above.

The number of threads available for privsep to concurrently run processes. Defaults to the number of CPU cores in the system.

helper_command

Type

string

Default

<None>

Command to invoke to start the privsep daemon if not using the “fork” method. If not specified, a default is generated using “sudo privsep-helper” and arguments designed to recreate the current configuration. This command must accept suitable –privsep_context and –privsep_sock_path arguments.

logger_name

Type

string

Default

oslo_privsep.daemon

Logger name to use for this privsep context. By default all contexts log with oslo_privsep.daemon.

profiler

enabled

Type

boolean

Default

False

Enable the profiling for all services on this node.

Default value is False (fully disable the profiling feature).

Possible values:

• True: Enables the feature

• False: Disables the feature. The profiling cannot be started via this project operations. If the profiling is triggered by another project, this project part will be empty.

Deprecated Variations

Group	Name
profiler	profiler_enabled

trace_sqlalchemy

Type

boolean

Default

False

Enable SQL requests profiling in services.

Default value is False (SQL requests won’t be traced).

Possible values:

• True: Enables SQL requests profiling. Each SQL query will be part of the trace and can the be analyzed by how much time was spent for that.

• False: Disables SQL requests profiling. The spent time is only shown on a higher level of operations. Single SQL queries cannot be analyzed this way.

hmac_keys

Type

string

Default

SECRET_KEY

Secret key(s) to use for encrypting context data for performance profiling.

This string value should have the following format: <key1>[,<key2>,…<keyn>], where each key is some random string. A user who triggers the profiling via the REST API has to set one of these keys in the headers of the REST API call to include profiling results of this node for this particular project.

Both “enabled” flag and “hmac_keys” config options should be set to enable profiling. Also, to generate correct profiling information across all services at least one key needs to be consistent between OpenStack projects. This ensures it can be used from client side to generate the trace, containing information from all possible resources.

connection_string

Type

string

Default

messaging://

Connection string for a notifier backend.

Default value is messaging:// which sets the notifier to oslo_messaging.

Examples of possible values:

• messaging:// - use oslo_messaging driver for sending spans.

• redis://127.0.0.1:6379 - use redis driver for sending spans.

• mongodb://127.0.0.1:27017 - use mongodb driver for sending spans.

• elasticsearch://127.0.0.1:9200 - use elasticsearch driver for sending spans.

• jaeger://127.0.0.1:6831 - use jaeger tracing as driver for sending spans.

es_doc_type

Type

string

Default

notification

Document type for notification indexing in elasticsearch.

es_scroll_time

Type

string

Default

2m

This parameter is a time value parameter (for example: es_scroll_time=2m), indicating for how long the nodes that participate in the search will maintain relevant resources in order to continue and support it.

es_scroll_size

Type

integer

Default

10000

Elasticsearch splits large requests in batches. This parameter defines maximum size of each batch (for example: es_scroll_size=10000).

socket_timeout

Type

floating point

Default

0.1

Redissentinel provides a timeout option on the connections. This parameter defines that timeout (for example: socket_timeout=0.1).

sentinel_service_name

Type

string

Default

mymaster

Redissentinel uses a service name to identify a master redis service. This parameter defines the name (for example: sentinal_service_name=mymaster).

filter_error_trace

Type

boolean

Default

False

Enable filter traces that contain error/exception to a separated place.

Default value is set to False.

Possible values:

• True: Enable filter traces that contain error/exception.

• False: Disable the filter.

quotas

default_quota

Type

integer

Default

-1

Default number of resource allowed per tenant. A negative value means unlimited.

quota_network

Type

integer

Default

100

Number of networks allowed per tenant. A negative value means unlimited.

quota_subnet

Type

integer

Default

100

Number of subnets allowed per tenant, A negative value means unlimited.

quota_port

Type

integer

Default

500

Number of ports allowed per tenant. A negative value means unlimited.

quota_driver

Type

string

Default

neutron.db.quota.driver_nolock.DbQuotaNoLockDriver

Default driver to use for quota checks.

track_quota_usage

Type

boolean

Default

True

Keep in track in the database of current resource quota usage. Plugins which do not leverage the neutron database should set this flag to False.

quota_router

Type

integer

Default

10

Number of routers allowed per tenant. A negative value means unlimited.

quota_floatingip

Type

integer

Default

50

Number of floating IPs allowed per tenant. A negative value means unlimited.

quota_security_group

Type

integer

Default

10

Number of security groups allowed per tenant. A negative value means unlimited.

quota_security_group_rule

Type

integer

Default

100

Number of security rules allowed per tenant. A negative value means unlimited.

ssl

ca_file

Type

string

Default

<None>

CA certificate file to use to verify connecting clients.

Deprecated Variations

Group	Name
DEFAULT	ssl_ca_file

cert_file

Type

string

Default

<None>

Certificate file to use when starting the server securely.

Deprecated Variations

Group	Name
DEFAULT	ssl_cert_file

key_file

Type

string

Default

<None>

Private key file to use when starting the server securely.

Deprecated Variations

Group	Name
DEFAULT	ssl_key_file

version

Type

string

Default

<None>

SSL version to use (valid only if SSL enabled). Valid values are TLSv1 and SSLv23. SSLv2, SSLv3, TLSv1_1, and TLSv1_2 may be available on some distributions.

ciphers

Type

string

Default

<None>

Sets the list of available ciphers. value should be a string in the OpenSSL cipher list format.