neutron.conf¶

DEFAULT¶

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

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.

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.

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.

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¶

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_wsrep_sync_wait¶

Type: integer
Default: <None>

For Galera only, configure wsrep_sync_wait causality checks on new connections. Default is None, meaning don’t configure any setting.

mysql_enable_ndb¶

Type: boolean
Default: False

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

Warning

This option is deprecated for removal since 12.1.0. Its value may be silently ignored in the future.

Reason: Support for the MySQL NDB Cluster storage engine has been deprecated and will be removed in a future release.

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&…

engine¶

Type: string
Default: ''

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

designate¶

auth_url¶

Type: unknown type
Default: <None>

Authentication URL

auth_type¶

Type: unknown type
Default: <None>

Authentication type to load

Deprecated Variations¶
Group	Name
designate	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
designate	tenant-id
designate	tenant_id

project_name¶

Type: unknown type
Default: <None>

Project name to scope to

Deprecated Variations¶
Group	Name
designate	tenant-name
designate	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
designate	user-name
designate	user_name

url¶

Type: string
Default: <None>

URL for connecting to designate

admin_username¶

Type: string
Default: <None>

Username for connecting to designate in admin context

Warning