API Configuration options

Configuration

The Identity service is configured in the /etc/keystone/keystone.conf file.

The following tables provide a comprehensive list of the Identity service options.

For a sample configuration file, refer to keystone.conf.

DEFAULT

admin_token

Type:

string

Default:

<None>

Using this feature is NOT recommended. Instead, use the keystone-manage bootstrap command. The value of this option is treated as a “shared secret” that can be used to bootstrap Keystone through the API. This “token” does not represent a user (it has no identity), and carries no explicit authorization (it effectively bypasses most authorization checks). If set to None, the value is ignored and the admin_token middleware is effectively disabled.

public_endpoint

Type:

URI

Default:

<None>

The base public endpoint URL for Keystone that is advertised to clients (NOTE: this does NOT affect how Keystone listens for connections). Defaults to the base host URL of the request. For example, if keystone receives a request to http://server:5000/v3/users, then this will option will be automatically treated as http://server:5000. You should only need to set option if either the value of the base URL contains a path that keystone does not automatically infer (/prefix/v3), or if the endpoint should be found on a different host.

max_project_tree_depth

Type:

integer

Default:

5

Maximum depth of the project hierarchy, excluding the project acting as a domain at the top of the hierarchy. WARNING: Setting it to a large value may adversely impact performance.

max_param_size

Type:

integer

Default:

64

Limit the sizes of user & project ID/names.

Warning

This option is deprecated for removal since 2025.1. Its value may be silently ignored in the future.

Reason:

This option has had no effect.

max_token_size

Type:

integer

Default:

255

Similar to [DEFAULT] max_param_size, but provides an exception for token values. With Fernet tokens, this can be set as low as 255.

list_limit

Type:

integer

Default:

<None>

The maximum number of entities that will be returned in a collection. This global limit may be then overridden for a specific driver, by specifying a list_limit in the appropriate section (for example, [assignment]). No limit is set by default. In larger deployments, it is recommended that you set this to a reasonable number to prevent operations like listing all users and projects from placing an unnecessary load on the system.

strict_password_check

Type:

boolean

Default:

False

If set to true, strict password length checking is performed for password manipulation. If a password exceeds the maximum length, the operation will fail with an HTTP 403 Forbidden error. If set to false, passwords are automatically truncated to the maximum length.

insecure_debug

Type:

boolean

Default:

False

If set to true, then the server will return information in HTTP responses that may allow an unauthenticated or authenticated user to get more information than normal, such as additional details about why authentication failed. This may be useful for debugging but is insecure.

default_publisher_id

Type:

string

Default:

<None>

Default publisher_id for outgoing notifications. If left undefined, Keystone will default to using the server’s host name.

notification_format

Type:

string

Default:

cadf

Valid Values:

basic, cadf

Define the notification format for identity service events. A basic notification only has information about the resource being operated on. A cadf notification has the same information, as well as information about the initiator of the event. The cadf option is entirely backwards compatible with the basic option, but is fully CADF-compliant, and is recommended for auditing use cases.

notification_opt_out

Type:

multi-valued

Default:

identity.authenticate.success

Default:

identity.authenticate.pending

You can reduce the number of notifications keystone emits by explicitly opting out. Keystone will not emit notifications that match the patterns expressed in this list. Values are expected to be in the form of identity.<resource_type>.<operation>. By default, all notifications related to authentication are automatically suppressed. This field can be set multiple times in order to opt-out of multiple notification topics. For example, the following suppresses notifications describing user creation or successful authentication events: notification_opt_out=identity.user.create notification_opt_out=identity.authenticate.success

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.

Warning

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

Reason:

This function is known to have bene broken for long time, and depends on the unmaintained library

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.

Warning

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

Reason:

Windows support is no longer maintained.

log_color

Type:

boolean

Default:

False

(Optional) Set the ‘color’ key according to log levels. This option takes effect only when logging to stderr or stdout is used. This option is ignored if log_config_append is set.

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:

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

Valid Values:

CRITICAL, ERROR, INFO, WARNING, DEBUG, ‘’

Log level name used by rate limiting. 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.

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:

keystone

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

application_credential

driver

Type:

string

Default:

sql

Entry point for the application credential backend driver in the keystone.application_credential namespace. Keystone only provides a sql driver, so there is no reason to change this unless you are providing a custom entry point.

caching

Type:

boolean

Default:

True

Toggle for application credential caching. This has no effect unless global caching is enabled.

cache_time

Type:

integer

Default:

<None>

Time to cache application credential data in seconds. This has no effect unless global caching is enabled.

user_limit

Type:

integer

Default:

-1

Maximum number of application credentials a user is permitted to create. A value of -1 means unlimited. If a limit is not set, users are permitted to create application credentials at will, which could lead to bloat in the keystone database or open keystone to a DoS attack.

assignment

driver

Type:

string

Default:

sql

Entry point for the assignment backend driver (where role assignments are stored) in the keystone.assignment namespace. Only a SQL driver is supplied by keystone itself. Unless you are writing proprietary drivers for keystone, you do not need to set this option.

prohibited_implied_role

Type:

list

Default:

['admin']

A list of role names which are prohibited from being an implied role.

auth

methods

Type:

list

Default:

['external', 'password', 'token', 'oauth1', 'mapped', 'application_credential']

Allowed authentication methods. Note: You should disable the external auth method if you are currently using federation. External auth and federation both use the REMOTE_USER variable. Since both the mapped and external plugin are being invoked to validate attributes in the request environment, it can cause conflicts.

password

Type:

string

Default:

<None>

Entry point for the password auth plugin module in the keystone.auth.password namespace. You do not need to set this unless you are overriding keystone’s own password authentication plugin.

token

Type:

string

Default:

<None>

Entry point for the token auth plugin module in the keystone.auth.token namespace. You do not need to set this unless you are overriding keystone’s own token authentication plugin.

external

Type:

string

Default:

<None>

Entry point for the external (REMOTE_USER) auth plugin module in the keystone.auth.external namespace. Supplied drivers are DefaultDomain and Domain. The default driver is DefaultDomain, which assumes that all users identified by the username specified to keystone in the REMOTE_USER variable exist within the context of the default domain. The Domain option expects an additional environment variable be presented to keystone, REMOTE_DOMAIN, containing the domain name of the REMOTE_USER (if REMOTE_DOMAIN is not set, then the default domain will be used instead). You do not need to set this unless you are taking advantage of “external authentication”, where the application server (such as Apache) is handling authentication instead of keystone.

oauth1

Type:

string

Default:

<None>

Entry point for the OAuth 1.0a auth plugin module in the keystone.auth.oauth1 namespace. You do not need to set this unless you are overriding keystone’s own oauth1 authentication plugin.

mapped

Type:

string

Default:

<None>

Entry point for the mapped auth plugin module in the keystone.auth.mapped namespace. You do not need to set this unless you are overriding keystone’s own mapped authentication plugin.

application_credential

Type:

string

Default:

<None>

Entry point for the application_credential auth plugin module in the keystone.auth.application_credential namespace. You do not need to set this unless you are overriding keystone’s own application_credential authentication plugin.

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

Minimum Value:

1

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_expiration_time

Type:

integer

Default:

<None>

Minimum Value:

1

Expiration time in cache backend to purge expired records automatically. This should be greater than expiration_time and all cache_time options

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.redis_sentinel, 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:

True

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 with the 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:

<None>

the user name for the memcached which SASL enabled

memcache_password

Type:

string

Default:

<None>

the password for the memcached which SASL enabled

redis_server

Type:

string

Default:

localhost:6379

Redis server in the format of “host:port”

redis_db

Type:

integer

Default:

0

Minimum Value:

0

Database id in Redis server

redis_username

Type:

string

Default:

<None>

the user name for redis

redis_password

Type:

string

Default:

<None>

the password for redis

redis_sentinels

Type:

list

Default:

['localhost:26379']

Redis sentinel servers in the format of “host:port”

redis_socket_timeout

Type:

floating point

Default:

1.0

Timeout in seconds for every call to a server. (dogpile.cache.redis and dogpile.cache.redis_sentinel backends only).

redis_sentinel_service_name

Type:

string

Default:

mymaster

Service name of the redis sentinel cluster.

tls_enabled

Type:

boolean

Default:

False

Global toggle for TLS usage when communicating with the caching servers. Currently supported by dogpile.cache.bmemcache, dogpile.cache.pymemcache, oslo_cache.memcache_pool, dogpile.cache.redis and dogpile.cache.redis_sentinel.

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. Currently supported by dogpile.cache.bmemcache, dogpile.cache.pymemcache and oslo_cache.memcache_pool.

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.

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. Currently supported by dogpile.cache.bmemcache, dogpile.cache.pymemcache and oslo_cache.memcache_pool.

catalog

template_file

Type:

string

Default:

default_catalog.templates

Absolute path to the file used for the templated catalog backend. This option is only used if the [catalog] driver is set to templated.

driver

Type:

string

Default:

sql

Entry point for the catalog driver in the keystone.catalog namespace. Keystone provides a sql option (which supports basic CRUD operations through SQL), a templated option (which loads the catalog from a templated catalog file on disk), and a endpoint_filter.sql option (which supports arbitrary service catalogs per project).

caching

Type:

boolean

Default:

True

Toggle for catalog caching. This has no effect unless global caching is enabled. In a typical deployment, there is no reason to disable this.

cache_time

Type:

integer

Default:

<None>

Time to cache catalog data (in seconds). This has no effect unless global and catalog caching are both enabled. Catalog data (services, endpoints, etc.) typically does not change frequently, and so a longer duration than the global default may be desirable.

list_limit

Type:

integer

Default:

<None>

Maximum number of entities that will be returned in a catalog collection. There is typically no reason to set this, as it would be unusual for a deployment to have enough services or endpoints to exceed a reasonable limit.

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-Openstack-Request-Id', 'X-Subject-Token', 'Openstack-Auth-Receipt']

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-Openstack-Request-Id', 'X-Subject-Token', 'X-Project-Id', 'X-Project-Name', 'X-Project-Domain-Id', 'X-Project-Domain-Name', 'X-Domain-Id', 'X-Domain-Name', 'Openstack-Auth-Receipt']

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

credential

driver

Type:

string

Default:

sql

Entry point for the credential backend driver in the keystone.credential namespace. Keystone only provides a sql driver, so there’s no reason to change this unless you are providing a custom entry point.

provider

Type:

string

Default:

fernet

Entry point for credential encryption and decryption operations in the keystone.credential.provider namespace. Keystone only provides a fernet driver, so there’s no reason to change this unless you are providing a custom entry point to encrypt and decrypt credentials.

key_repository

Type:

string

Default:

/etc/keystone/credential-keys/

Directory containing Fernet keys used to encrypt and decrypt credentials stored in the credential backend. Fernet keys used to encrypt credentials have no relationship to Fernet keys used to encrypt Fernet tokens. Both sets of keys should be managed separately and require different rotation policies. Do not share this repository with the repository used to manage keys for Fernet tokens.

caching

Type:

boolean

Default:

True

Toggle for caching only on retrieval of user credentials. This has no effect unless global caching is enabled.

cache_time

Type:

integer

Default:

<None>

Time to cache credential data in seconds. This has no effect unless global caching is enabled.

auth_ttl

Type:

integer

Default:

15

The length of time in minutes for which a signed EC2 or S3 token request is valid from the timestamp contained in the token request.

user_limit

Type:

integer

Default:

-1

Maximum number of credentials a user is permitted to create. A value of -1 means unlimited. If a limit is not set, users are permitted to create credentials at will, which could lead to bloat in the keystone database or open keystone to a DoS attack.

database

sqlite_synchronous

Type:

boolean

Default:

True

If True, SQLite uses synchronous mode.

backend

Type:

string

Default:

sqlalchemy

The back end to use for the database.

connection

Type:

string

Default:

<None>

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

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.

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.

retry_interval

Type:

integer

Default:

10

Interval between retries of opening a SQL connection.

max_overflow

Type:

integer

Default:

50

If set, use this value for max_overflow with SQLAlchemy.

connection_debug

Type:

integer

Default:

0

Minimum Value:

0

Maximum Value:

100

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

connection_trace

Type:

boolean

Default:

False

Add Python stack traces to SQL as comment strings.

pool_timeout

Type:

integer

Default:

<None>

If set, use this value for pool_timeout with SQLAlchemy.

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&…

domain_config

driver

Type:

string

Default:

sql

Entry point for the domain-specific configuration driver in the keystone.resource.domain_config namespace. Only a sql option is provided by keystone, so there is no reason to set this unless you are providing a custom entry point.

caching

Type:

boolean

Default:

True

Toggle for caching of the domain-specific configuration backend. This has no effect unless global caching is enabled. There is normally no reason to disable this.

cache_time

Type:

integer

Default:

300

Time-to-live (TTL, in seconds) to cache domain-specific configuration data. This has no effect unless [domain_config] caching is enabled.

additional_whitelisted_options

Type:

unknown type

Default:

<None>

Additional whitelisted domain-specific options for out-of-tree drivers. This is a dictonary of lists with the key being the group name and value a list of group options.

additional_sensitive_options

Type:

unknown type

Default:

<None>

Additional sensitive domain-specific options for out-of-tree drivers. This is a dictonary of lists with the key being the group name and value a list of group options.

endpoint_filter

driver

Type:

string

Default:

sql

Entry point for the endpoint filter driver in the keystone.endpoint_filter namespace. Only a sql option is provided by keystone, so there is no reason to set this unless you are providing a custom entry point.

return_all_endpoints_if_no_filter

Type:

boolean

Default:

True

This controls keystone’s behavior if the configured endpoint filters do not result in any endpoints for a user + project pair (and therefore a potentially empty service catalog). If set to true, keystone will return the entire service catalog. If set to false, keystone will return an empty service catalog.

endpoint_policy

driver

Type:

string

Default:

sql

Entry point for the endpoint policy driver in the keystone.endpoint_policy namespace. Only a sql driver is provided by keystone, so there is no reason to set this unless you are providing a custom entry point.

federation

driver

Type:

string

Default:

sql

Entry point for the federation backend driver in the keystone.federation namespace. Keystone only provides a sql driver, so there is no reason to set this option unless you are providing a custom entry point.

assertion_prefix

Type:

string

Default:

''

Prefix to use when filtering environment variable names for federated assertions. Matched variables are passed into the federated mapping engine.

remote_id_attribute

Type:

string

Default:

<None>

Default value for all protocols to be used to obtain the entity ID of the Identity Provider from the environment. For mod_shib, this would be Shib-Identity-Provider. For mod_auth_openidc, this could be HTTP_OIDC_ISS. For mod_auth_mellon, this could be MELLON_IDP. This can be overridden on a per-protocol basis by providing a remote_id_attribute to the federation protocol using the API.

federated_domain_name

Type:

string

Default:

Federated

An arbitrary domain name that is reserved to allow federated ephemeral users to have a domain concept. Note that an admin will not be able to create a domain with this name or update an existing domain to this name. You are not advised to change this value unless you really have to.

Warning

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

Reason:

This option has been superseded by ephemeral users existing in the domain of their identity provider.

trusted_dashboard

Type:

multi-valued

Default:

''

A list of trusted dashboard hosts. Before accepting a Single Sign-On request to return a token, the origin host must be a member of this list. This configuration option may be repeated for multiple values. You must set this in order to use web-based SSO flows. For example: trusted_dashboard=https://acme.example.com/auth/websso trusted_dashboard=https://beta.example.com/auth/websso

sso_callback_template

Type:

string

Default:

/etc/keystone/sso_callback_template.html

Absolute path to an HTML file used as a Single Sign-On callback handler. This page is expected to redirect the user from keystone back to a trusted dashboard host, by form encoding a token in a POST request. Keystone’s default value should be sufficient for most deployments.

caching

Type:

boolean

Default:

True

Toggle for federation caching. This has no effect unless global caching is enabled. There is typically no reason to disable this.

default_authorization_ttl

Type:

integer

Default:

0

Default time in minutes for the validity of group memberships carried over from a mapping. Default is 0, which means disabled.

attribute_mapping_default_schema_version

Type:

string

Default:

1.0

The attribute mapping default schema version to be used, if the attribute mapping being registered does not have a schema version. One must bear in mind that changing this value will have no effect on attribute mappings that were previously registered when another default value was applied. Once registered, one needs to update the attribute mapping schema via the update API to be able to change an attribute mapping schema version.

fernet_receipts

key_repository

Type:

string

Default:

/etc/keystone/fernet-keys/

Directory containing Fernet receipt keys. This directory must exist before using keystone-manage fernet_setup for the first time, must be writable by the user running keystone-manage fernet_setup or keystone-manage fernet_rotate, and of course must be readable by keystone’s server process. The repository may contain keys in one of three states: a single staged key (always index 0) used for receipt validation, a single primary key (always the highest index) used for receipt creation and validation, and any number of secondary keys (all other index values) used for receipt validation. With multiple keystone nodes, each node must share the same key repository contents, with the exception of the staged key (index 0). It is safe to run keystone-manage fernet_rotate once on any one node to promote a staged key (index 0) to be the new primary (incremented from the previous highest index), and produce a new staged key (a new key with index 0); the resulting repository can then be atomically replicated to other nodes without any risk of race conditions (for example, it is safe to run keystone-manage fernet_rotate on host A, wait any amount of time, create a tarball of the directory on host A, unpack it on host B to a temporary location, and atomically move (mv) the directory into place on host B). Running keystone-manage fernet_rotate twice on a key repository without syncing other nodes will result in receipts that can not be validated by all nodes.

max_active_keys

Type:

integer

Default:

3

Minimum Value:

1

This controls how many keys are held in rotation by keystone-manage fernet_rotate before they are discarded. The default value of 3 means that keystone will maintain one staged key (always index 0), one primary key (the highest numerical index), and one secondary key (every other index). Increasing this value means that additional secondary keys will be kept in the rotation.

fernet_tokens

key_repository

Type:

string

Default:

/etc/keystone/fernet-keys/

Directory containing Fernet token keys. This directory must exist before using keystone-manage fernet_setup for the first time, must be writable by the user running keystone-manage fernet_setup or keystone-manage fernet_rotate, and of course must be readable by keystone’s server process. The repository may contain keys in one of three states: a single staged key (always index 0) used for token validation, a single primary key (always the highest index) used for token creation and validation, and any number of secondary keys (all other index values) used for token validation. With multiple keystone nodes, each node must share the same key repository contents, with the exception of the staged key (index 0). It is safe to run keystone-manage fernet_rotate once on any one node to promote a staged key (index 0) to be the new primary (incremented from the previous highest index), and produce a new staged key (a new key with index 0); the resulting repository can then be atomically replicated to other nodes without any risk of race conditions (for example, it is safe to run keystone-manage fernet_rotate on host A, wait any amount of time, create a tarball of the directory on host A, unpack it on host B to a temporary location, and atomically move (mv) the directory into place on host B). Running keystone-manage fernet_rotate twice on a key repository without syncing other nodes will result in tokens that can not be validated by all nodes.

max_active_keys

Type:

integer

Default:

3

Minimum Value:

1

This controls how many keys are held in rotation by keystone-manage fernet_rotate before they are discarded. The default value of 3 means that keystone will maintain one staged key (always index 0), one primary key (the highest numerical index), and one secondary key (every other index). Increasing this value means that additional secondary keys will be kept in the rotation.

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.

allowed_source_ranges

Type:

list

Default:

[]

A list of network addresses to limit source ip allowed to access healthcheck information. Any request from ip outside of these network addresses are ignored.

ignore_proxied_requests

Type:

boolean

Default:

False

Ignore requests with proxy headers.

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.

enable_by_file_paths

Type:

list

Default:

[]

Check the presence of files. Used by EnableByFilesHealthcheck plugin.

identity

default_domain_id

Type:

string

Default:

default

This references the domain to use for all Identity API v2 requests (which are not aware of domains). A domain with this ID can optionally be created for you by keystone-manage bootstrap. The domain referenced by this ID cannot be deleted on the v3 API, to prevent accidentally breaking the v2 API. There is nothing special about this domain, other than the fact that it must exist to order to maintain support for your v2 clients. There is typically no reason to change this value.

domain_specific_drivers_enabled

Type:

boolean

Default:

False

A subset (or all) of domains can have their own identity driver, each with their own partial configuration options, stored in either the resource backend or in a file in a domain configuration directory (depending on the setting of [identity] domain_configurations_from_database). Only values specific to the domain need to be specified in this manner. This feature is disabled by default, but may be enabled by default in a future release; set to true to enable.

domain_configurations_from_database

Type:

boolean

Default:

False

By default, domain-specific configuration data is read from files in the directory identified by [identity] domain_config_dir. Enabling this configuration option allows you to instead manage domain-specific configurations through the API, which are then persisted in the backend (typically, a SQL database), rather than using configuration files on disk.

domain_config_dir

Type:

string

Default:

/etc/keystone/domains

Absolute path where keystone should locate domain-specific [identity] configuration files. This option has no effect unless [identity] domain_specific_drivers_enabled is set to true. There is typically no reason to change this value.

driver

Type:

string

Default:

sql

Entry point for the identity backend driver in the keystone.identity namespace. Keystone provides a sql and ldap driver. This option is also used as the default driver selection (along with the other configuration variables in this section) in the event that [identity] domain_specific_drivers_enabled is enabled, but no applicable domain-specific configuration is defined for the domain in question. Unless your deployment primarily relies on ldap AND is not using domain-specific configuration, you should typically leave this set to sql.

caching

Type:

boolean

Default:

True

Toggle for identity caching. This has no effect unless global caching is enabled. There is typically no reason to disable this.

cache_time

Type:

integer

Default:

600

Time to cache identity data (in seconds). This has no effect unless global and identity caching are enabled.

max_password_length

Type:

integer

Default:

4096

Maximum Value:

4096

Maximum allowed length for user passwords. Decrease this value to improve performance. Changing this value does not effect existing passwords. This value can also be overridden by certain hashing algorithms maximum allowed length which takes precedence over the configured value. The bcrypt max_password_length is 72 bytes.

list_limit

Type:

integer

Default:

<None>

Maximum number of entities that will be returned in an identity collection.

password_hash_algorithm

Type:

string

Default:

bcrypt

Valid Values:

bcrypt, bcrypt_sha256, scrypt, pbkdf2_sha512

The password hashing algorithm to use for passwords stored within keystone.

password_hash_rounds

Type:

integer

Default:

<None>

This option represents a trade off between security and performance. Higher values lead to slower performance, but higher security. Changing this option will only affect newly created passwords as existing password hashes already have a fixed number of rounds applied, so it is safe to tune this option in a running cluster. The default for bcrypt is 12, must be between 4 and 31, inclusive. The default for scrypt is 16, must be within range(1,32). The default for pbkdf_sha512 is 60000, must be within range(1,1<<32) WARNING: If using scrypt, increasing this value increases BOTH time AND memory requirements to hash a password.

scrypt_block_size

Type:

integer

Default:

<None>

Optional block size to pass to scrypt hash function (the r parameter). Useful for tuning scrypt to optimal performance for your CPU architecture. This option is only used when the password_hash_algorithm option is set to scrypt. Defaults to 8.

scrypt_parallelism

Type:

integer

Default:

<None>

Optional parallelism to pass to scrypt hash function (the p parameter). This option is only used when the password_hash_algorithm option is set to scrypt. Defaults to 1.

salt_bytesize

Type:

integer

Default:

<None>

Minimum Value:

0

Maximum Value:

96

Number of bytes to use in scrypt and pbkfd2_sha512 hashing salt. Default for scrypt is 16 bytes. Default for pbkfd2_sha512 is 16 bytes. Limited to a maximum of 96 bytes due to the size of the column used to store password hashes.

identity_mapping

driver

Type:

string

Default:

sql

Entry point for the identity mapping backend driver in the keystone.identity.id_mapping namespace. Keystone only provides a sql driver, so there is no reason to change this unless you are providing a custom entry point.

generator

Type:

string

Default:

sha256

Entry point for the public ID generator for user and group entities in the keystone.identity.id_generator namespace. The Keystone identity mapper only supports generators that produce 64 bytes or less. Keystone only provides a sha256 entry point, so there is no reason to change this value unless you’re providing a custom entry point.

backward_compatible_ids

Type:

boolean

Default:

True

The format of user and group IDs changed in Juno for backends that do not generate UUIDs (for example, LDAP), with keystone providing a hash mapping to the underlying attribute in LDAP. By default this mapping is disabled, which ensures that existing IDs will not change. Even when the mapping is enabled by using domain-specific drivers ([identity] domain_specific_drivers_enabled), any users and groups from the default domain being handled by LDAP will still not be mapped to ensure their IDs remain backward compatible. Setting this value to false will enable the new mapping for all backends, including the default LDAP driver. It is only guaranteed to be safe to enable this option if you do not already have assignments for users and groups from the default LDAP domain, and you consider it to be acceptable for Keystone to provide the different IDs to clients than it did previously (existing IDs in the API will suddenly change). Typically this means that the only time you can set this value to false is when configuring a fresh installation, although that is the recommended value.

jwt_tokens

jws_public_key_repository

Type:

string

Default:

/etc/keystone/jws-keys/public

Directory containing public keys for validating JWS token signatures. This directory must exist in order for keystone’s server process to start. It must also be readable by keystone’s server process. It must contain at least one public key that corresponds to a private key in keystone.conf [jwt_tokens] jws_private_key_repository. This option is only applicable in deployments issuing JWS tokens and setting keystone.conf [token] provider = jws.

jws_private_key_repository

Type:

string

Default:

/etc/keystone/jws-keys/private

Directory containing private keys for signing JWS tokens. This directory must exist in order for keystone’s server process to start. It must also be readable by keystone’s server process. It must contain at least one private key that corresponds to a public key in keystone.conf [jwt_tokens] jws_public_key_repository. In the event there are multiple private keys in this directory, keystone will use a key named private.pem to sign tokens. In the future, keystone may support the ability to sign tokens with multiple private keys. For now, only a key named private.pem within this directory is required to issue JWS tokens. This option is only applicable in deployments issuing JWS tokens and setting keystone.conf [token] provider = jws.

ldap

url

Type:

string

Default:

ldap://localhost

URL(s) for connecting to the LDAP server. Multiple LDAP URLs may be specified as a comma separated string. The first URL to successfully bind is used for the connection.

randomize_urls

Type:

boolean

Default:

False

Randomize the order of URLs in each keystone process. This makes the failure behavior more gradual, since if the first server is down, a process/thread will wait for the specified timeout before attempting a connection to a server further down the list. This defaults to False, for backward compatibility.

user

Type:

string

Default:

<None>

The user name of the administrator bind DN to use when querying the LDAP server, if your LDAP server requires it.

password

Type:

string

Default:

<None>

The password of the administrator bind DN to use when querying the LDAP server, if your LDAP server requires it.

suffix

Type:

string

Default:

cn=example,cn=com

The default LDAP server suffix to use, if a DN is not defined via either [ldap] user_tree_dn or [ldap] group_tree_dn.

query_scope

Type:

string

Default:

one

Valid Values:

one, sub

The search scope which defines how deep to search within the search base. A value of one (representing oneLevel or singleLevel) indicates a search of objects immediately below to the base object, but does not include the base object itself. A value of sub (representing subtree or wholeSubtree) indicates a search of both the base object itself and the entire subtree below it.

page_size

Type:

integer

Default:

0

Minimum Value:

0

Defines the maximum number of results per page that keystone should request from the LDAP server when listing objects. A value of zero (0) disables paging.

alias_dereferencing

Type:

string

Default:

default

Valid Values:

never, searching, always, finding, default

The LDAP dereferencing option to use for queries involving aliases. A value of default falls back to using default dereferencing behavior configured by your ldap.conf. A value of never prevents aliases from being dereferenced at all. A value of searching dereferences aliases only after name resolution. A value of finding dereferences aliases only during name resolution. A value of always dereferences aliases in all cases.

debug_level

Type:

integer

Default:

<None>

Minimum Value:

-1

Sets the LDAP debugging level for LDAP calls. A value of 0 means that debugging is not enabled. This value is a bitmask, consult your LDAP documentation for possible values.

chase_referrals

Type:

boolean

Default:

<None>

Sets keystone’s referral chasing behavior across directory partitions. If left unset, the system’s default behavior will be used.

user_tree_dn

Type:

string

Default:

<None>

The search base to use for users. Defaults to ou=Users with the [ldap] suffix appended to it.

user_filter

Type:

string

Default:

<None>

The LDAP search filter to use for users.

user_objectclass

Type:

string

Default:

inetOrgPerson

The LDAP object class to use for users.

user_id_attribute

Type:

string

Default:

cn

The LDAP attribute mapped to user IDs in keystone. This must NOT be a multivalued attribute. User IDs are expected to be globally unique across keystone domains and URL-safe.

user_name_attribute

Type:

string

Default:

sn

The LDAP attribute mapped to user names in keystone. User names are expected to be unique only within a keystone domain and are not expected to be URL-safe.

user_description_attribute

Type:

string

Default:

description

The LDAP attribute mapped to user descriptions in keystone.

user_mail_attribute

Type:

string

Default:

mail

The LDAP attribute mapped to user emails in keystone.

user_pass_attribute

Type:

string

Default:

userPassword

The LDAP attribute mapped to user passwords in keystone.

user_enabled_attribute

Type:

string

Default:

enabled

The LDAP attribute mapped to the user enabled attribute in keystone. If setting this option to userAccountControl, then you may be interested in setting [ldap] user_enabled_mask and [ldap] user_enabled_default as well.

user_enabled_invert

Type:

boolean

Default:

False

Logically negate the boolean value of the enabled attribute obtained from the LDAP server. Some LDAP servers use a boolean lock attribute where “true” means an account is disabled. Setting [ldap] user_enabled_invert = true will allow these lock attributes to be used. This option will have no effect if either the [ldap] user_enabled_mask or [ldap] user_enabled_emulation options are in use.

user_enabled_mask

Type:

integer

Default:

0

Minimum Value:

0

Bitmask integer to select which bit indicates the enabled value if the LDAP server represents “enabled” as a bit on an integer rather than as a discrete boolean. A value of 0 indicates that the mask is not used. If this is not set to 0 the typical value is 2. This is typically used when [ldap] user_enabled_attribute = userAccountControl. Setting this option causes keystone to ignore the value of [ldap] user_enabled_invert.

user_enabled_default

Type:

string

Default:

True

The default value to enable users. This should match an appropriate integer value if the LDAP server uses non-boolean (bitmask) values to indicate if a user is enabled or disabled. If this is not set to True, then the typical value is 512. This is typically used when [ldap] user_enabled_attribute = userAccountControl.

user_attribute_ignore

Type:

list

Default:

['default_project_id']

List of user attributes to ignore on create and update, or whether a specific user attribute should be filtered for list or show user.

user_default_project_id_attribute

Type:

string

Default:

<None>

The LDAP attribute mapped to a user’s default_project_id in keystone. This is most commonly used when keystone has write access to LDAP.

user_enabled_emulation

Type:

boolean

Default:

False

If enabled, keystone uses an alternative method to determine if a user is enabled or not by checking if they are a member of the group defined by the [ldap] user_enabled_emulation_dn option. Enabling this option causes keystone to ignore the value of [ldap] user_enabled_invert.

user_enabled_emulation_dn

Type:

string

Default:

<None>

DN of the group entry to hold enabled users when using enabled emulation. Setting this option has no effect unless [ldap] user_enabled_emulation is also enabled.

user_enabled_emulation_use_group_config

Type:

boolean

Default:

False

Use the [ldap] group_member_attribute and [ldap] group_objectclass settings to determine membership in the emulated enabled group. Enabling this option has no effect unless [ldap] user_enabled_emulation is also enabled.

user_additional_attribute_mapping

Type:

list

Default:

[]

A list of LDAP attribute to keystone user attribute pairs used for mapping additional attributes to users in keystone. The expected format is <ldap_attr>:<user_attr>, where ldap_attr is the attribute in the LDAP object and user_attr is the attribute which should appear in the identity API.

group_tree_dn

Type:

string

Default:

<None>

The search base to use for groups. Defaults to ou=UserGroups with the [ldap] suffix appended to it.

group_filter

Type:

string

Default:

<None>

The LDAP search filter to use for groups.

group_objectclass

Type:

string

Default:

groupOfNames

The LDAP object class to use for groups. If setting this option to posixGroup, you may also be interested in enabling the [ldap] group_members_are_ids option.

group_id_attribute

Type:

string

Default:

cn

The LDAP attribute mapped to group IDs in keystone. This must NOT be a multivalued attribute. Group IDs are expected to be globally unique across keystone domains and URL-safe.

group_name_attribute

Type:

string

Default:

ou

The LDAP attribute mapped to group names in keystone. Group names are expected to be unique only within a keystone domain and are not expected to be URL-safe.

group_member_attribute

Type:

string

Default:

member

The LDAP attribute used to indicate that a user is a member of the group.

group_members_are_ids

Type:

boolean

Default:

False

Enable this option if the members of the group object class are keystone user IDs rather than LDAP DNs. This is the case when using posixGroup as the group object class in Open Directory.

group_desc_attribute

Type:

string

Default:

description

The LDAP attribute mapped to group descriptions in keystone.

group_attribute_ignore

Type:

list

Default:

[]

List of group attributes to ignore on create and update. or whether a specific group attribute should be filtered for list or show group.

group_additional_attribute_mapping

Type:

list

Default:

[]

A list of LDAP attribute to keystone group attribute pairs used for mapping additional attributes to groups in keystone. The expected format is <ldap_attr>:<group_attr>, where ldap_attr is the attribute in the LDAP object and group_attr is the attribute which should appear in the identity API.

group_ad_nesting

Type:

boolean

Default:

False

If enabled, group queries will use Active Directory specific filters for nested groups.

tls_cacertfile

Type:

string

Default:

<None>

An absolute path to a CA certificate file to use when communicating with LDAP servers. This option will take precedence over [ldap] tls_cacertdir, so there is no reason to set both.

tls_cacertdir

Type:

string

Default:

<None>

An absolute path to a CA certificate directory to use when communicating with LDAP servers. There is no reason to set this option if you’ve also set [ldap] tls_cacertfile.

use_tls

Type:

boolean

Default:

False

Enable TLS when communicating with LDAP servers. You should also set the [ldap] tls_cacertfile and [ldap] tls_cacertdir options when using this option. Do not set this option if you are using LDAP over SSL (LDAPS) instead of TLS.

tls_req_cert

Type:

string

Default:

demand

Valid Values:

demand, never, allow

Specifies which checks to perform against client certificates on incoming TLS sessions. If set to demand, then a certificate will always be requested and required from the LDAP server. If set to allow, then a certificate will always be requested but not required from the LDAP server. If set to never, then a certificate will never be requested.

connection_timeout

Type:

integer

Default:

-1

Minimum Value:

-1

The connection timeout to use with the LDAP server. A value of -1 means that connections will never timeout.

use_pool

Type:

boolean

Default:

True

Enable LDAP connection pooling for queries to the LDAP server. There is typically no reason to disable this.

pool_size

Type:

integer

Default:

10

Minimum Value:

1

The size of the LDAP connection pool. This option has no effect unless [ldap] use_pool is also enabled.

pool_retry_max

Type:

integer

Default:

3

Minimum Value:

1

The maximum number of times to attempt connecting to the LDAP server before aborting. A value of one makes only one connection attempt. This option has no effect unless [ldap] use_pool is also enabled.

pool_retry_delay

Type:

floating point

Default:

0.1

The number of seconds to wait before attempting to reconnect to the LDAP server. This option has no effect unless [ldap] use_pool is also enabled.

pool_connection_timeout

Type:

integer

Default:

-1

Minimum Value:

-1

The connection timeout to use when pooling LDAP connections. A value of -1 means that connections will never timeout. This option has no effect unless [ldap] use_pool is also enabled.

pool_connection_lifetime

Type:

integer

Default:

600

Minimum Value:

1

The maximum connection lifetime to the LDAP server in seconds. When this lifetime is exceeded, the connection will be unbound and removed from the connection pool. This option has no effect unless [ldap] use_pool is also enabled.

use_auth_pool

Type:

boolean

Default:

True

Enable LDAP connection pooling for end user authentication. There is typically no reason to disable this.

auth_pool_size

Type:

integer

Default:

100

Minimum Value:

1

The size of the connection pool to use for end user authentication. This option has no effect unless [ldap] use_auth_pool is also enabled.

auth_pool_connection_lifetime

Type:

integer

Default:

60

Minimum Value:

1

The maximum end user authentication connection lifetime to the LDAP server in seconds. When this lifetime is exceeded, the connection will be unbound and removed from the connection pool. This option has no effect unless [ldap] use_auth_pool is also enabled.

oauth1

driver

Type:

string

Default:

sql

Entry point for the OAuth backend driver in the keystone.oauth1 namespace. Typically, there is no reason to set this option unless you are providing a custom entry point.

request_token_duration

Type:

integer

Default:

28800

Minimum Value:

0

Number of seconds for the OAuth Request Token to remain valid after being created. This is the amount of time the user has to authorize the token. Setting this option to zero means that request tokens will last forever.

access_token_duration

Type:

integer

Default:

86400

Minimum Value:

0

Number of seconds for the OAuth Access Token to remain valid after being created. This is the amount of time the consumer has to interact with the service provider (which is typically keystone). Setting this option to zero means that access tokens will last forever.

oauth2

oauth2_authn_methods

Type:

list

Default:

['tls_client_auth', 'client_secret_basic']

The OAuth2.0 authentication method supported by the system when user obtains an access token through the OAuth2.0 token endpoint. This option can be set to certificate or secret. If the option is not set, the default value is certificate. When the option is set to secret, the OAuth2.0 token endpoint uses client_secret_basic method for authentication, otherwise tls_client_auth method is used for authentication.

oauth2_cert_dn_mapping_id

Type:

string

Default:

oauth2_mapping

Used to define the mapping rule id. When not set, the mapping rule id is oauth2_mapping.

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

(DEPRECATED) It is recommend not to use this option anymore. 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.

Warning

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

Reason:

The option is related to Eventlet which will be removed. In addition this has never worked as expected with services using eventlet for core service framework.

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 are also durable by default so the amqp_durable_queues option is ignored when this option is enabled.

rabbit_transient_quorum_queue

Type:

boolean

Default:

False

Use quorum queues for transients queues in RabbitMQ. Enabling this option will then make sure those queues are also using quorum kind of rabbit queues, which are HA by default.

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_quorum_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.

Deprecated Variations

Group	Name
oslo_messaging_rabbit	rabbit_quroum_max_memory_length

rabbit_quorum_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.

Deprecated Variations

Group	Name
oslo_messaging_rabbit	rabbit_quroum_max_memory_bytes

rabbit_transient_queues_ttl

Type:

integer

Default:

1800

Minimum Value:

0

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. Setting 0 as value will disable the x-expires. If doing so, make sure you have a rabbitmq policy to delete the queues or you deployment will create an infinite number of queue over time.In case rabbit_stream_fanout is set to True, this option will control data retention policy (x-max-age) for messages in the fanout queue rather then the queue duration itself. So the oldest data in the stream queue will be discarded from it once reaching TTL Setting to 0 will disable x-max-age for stream which make stream grow indefinitely filling up the diskspace

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:

3

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

use_queue_manager

Type:

boolean

Default:

False

Should we use consistant queue names or random ones

hostname

Type:

string

Default:

node1.example.com

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

Hostname used by queue manager. Defaults to the value returned by socket.gethostname().

processname

Type:

string

Default:

nova-api

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

Process name used by queue manager

rabbit_stream_fanout

Type:

boolean

Default:

False

Use stream queues in RabbitMQ (x-queue-type: stream). Streams are a new persistent and replicated data structure (“queue type”) in RabbitMQ which models an append-only log with non-destructive consumer semantics. It is available as of RabbitMQ 3.9.0. If set this option will replace all fanout queues with only one stream queue.

oslo_middleware

max_request_body_size

Type:

integer

Default:

114688

The maximum body size for each request, in bytes.

Deprecated Variations

Group	Name
DEFAULT	osapi_max_request_body_size
DEFAULT	max_request_body_size

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.

http_basic_auth_user_file

Type:

string

Default:

/etc/htpasswd

HTTP basic auth password file.

oslo_policy

enforce_scope

Type:

boolean

Default:

True

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.

Warning

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

Reason:

This configuration was added temporarily to facilitate a smooth transition to the new RBAC. OpenStack will always enforce scope checks. This configuration option is deprecated and will be removed in the 2025.2 cycle.

enforce_new_defaults

Type:

boolean

Default:

True

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.

policy_default_rule

Type:

string

Default:

default

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

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.

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

remote_timeout

Type:

floating point

Default:

60

Minimum Value:

0

Timeout in seconds for REST based policy check

policy

driver

Type:

string

Default:

sql

Entry point for the policy backend driver in the keystone.policy namespace. Supplied drivers are rules (which does not support any CRUD operations for the v3 policy API) and sql. Typically, there is no reason to set this option unless you are providing a custom entry point.

list_limit

Type:

integer

Default:

<None>

Maximum number of entities that will be returned in a policy collection.

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.

trace_requests

Type:

boolean

Default:

False

Enable python requests package profiling.

Supported drivers: jaeger+otlp

Default value is False.

Possible values:

• True: Enables requests profiling.

• False: Disables requests profiling.

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.

profiler_jaeger

service_name_prefix

Type:

string

Default:

<None>

Set service name prefix to Jaeger service name.

process_tags

Type:

dict

Default:

{}

Set process tracer tags.

profiler_otlp

service_name_prefix

Type:

string

Default:

<None>

Set service name prefix to OTLP exporters.

receipt

expiration

Type:

integer

Default:

300

Minimum Value:

0

Maximum Value:

86400

The amount of time that a receipt should remain valid (in seconds). This value should always be very short, as it represents how long a user has to reattempt auth with the missing auth methods.

provider

Type:

string

Default:

fernet

Entry point for the receipt provider in the keystone.receipt.provider namespace. The receipt provider controls the receipt construction and validation operations. Keystone includes just the fernet receipt provider for now. fernet receipts do not need to be persisted at all, but require that you run keystone-manage fernet_setup (also see the keystone-manage fernet_rotate command).

caching

Type:

boolean

Default:

True

Toggle for caching receipt creation and validation data. This has no effect unless global caching is enabled, or if cache_on_issue is disabled as we only cache receipts on issue.

cache_time

Type:

integer

Default:

300

Minimum Value:

0

The number of seconds to cache receipt creation and validation data. This has no effect unless both global and [receipt] caching are enabled.

cache_on_issue

Type:

boolean

Default:

True

Enable storing issued receipt data to receipt validation cache so that first receipt validation doesn’t actually cause full validation cycle. This option has no effect unless global caching and receipt caching are enabled.

resource

driver

Type:

string

Default:

sql

Entry point for the resource driver in the keystone.resource namespace. Only a sql driver is supplied by keystone. Unless you are writing proprietary drivers for keystone, you do not need to set this option.

caching

Type:

boolean

Default:

True

Toggle for resource caching. This has no effect unless global caching is enabled.

Deprecated Variations

Group	Name
assignment	caching

cache_time

Type:

integer

Default:

<None>

Time to cache resource data in seconds. This has no effect unless global caching is enabled.

Deprecated Variations

Group	Name
assignment	cache_time

list_limit

Type:

integer

Default:

<None>

Maximum number of entities that will be returned in a resource collection.

Deprecated Variations

Group	Name
assignment	list_limit

admin_project_domain_name

Type:

string

Default:

<None>

Name of the domain that owns the admin_project_name. If left unset, then there is no admin project. [resource] admin_project_name must also be set to use this option.

admin_project_name

Type:

string

Default:

<None>

This is a special project which represents cloud-level administrator privileges across services. Tokens scoped to this project will contain a true is_admin_project attribute to indicate to policy systems that the role assignments on that specific project should apply equally across every project. If left unset, then there is no admin project, and thus no explicit means of cross-project role assignments. [resource] admin_project_domain_name must also be set to use this option.

project_name_url_safe

Type:

string

Default:

off

Valid Values:

off, new, strict

This controls whether the names of projects are restricted from containing URL-reserved characters. If set to new, attempts to create or update a project with a URL-unsafe name will fail. If set to strict, attempts to scope a token with a URL-unsafe project name will fail, thereby forcing all project names to be updated to be URL-safe.

domain_name_url_safe

Type:

string

Default:

off

Valid Values:

off, new, strict

This controls whether the names of domains are restricted from containing URL-reserved characters. If set to new, attempts to create or update a domain with a URL-unsafe name will fail. If set to strict, attempts to scope a token with a URL-unsafe domain name will fail, thereby forcing all domain names to be updated to be URL-safe.

revoke

driver

Type:

string

Default:

sql

Entry point for the token revocation backend driver in the keystone.revoke namespace. Keystone only provides a sql driver, so there is no reason to set this option unless you are providing a custom entry point.

expiration_buffer

Type:

integer

Default:

1800

Minimum Value:

0

The number of seconds after a token has expired before a corresponding revocation event may be purged from the backend.

caching

Type:

boolean

Default:

True

Toggle for revocation event caching. This has no effect unless global caching is enabled.

cache_time

Type:

integer

Default:

3600

Time to cache the revocation list and the revocation events (in seconds). This has no effect unless global and [revoke] caching are both enabled.

Deprecated Variations

Group	Name
token	revocation_cache_time

role

driver

Type:

string

Default:

<None>

Entry point for the role backend driver in the keystone.role namespace. Keystone only provides a sql driver, so there’s no reason to change this unless you are providing a custom entry point.

caching

Type:

boolean

Default:

True

Toggle for role caching. This has no effect unless global caching is enabled. In a typical deployment, there is no reason to disable this.

cache_time

Type:

integer

Default:

<None>

Time to cache role data, in seconds. This has no effect unless both global caching and [role] caching are enabled.

list_limit

Type:

integer

Default:

<None>

Maximum number of entities that will be returned in a role collection. This may be useful to tune if you have a large number of discrete roles in your deployment.

saml

assertion_expiration_time

Type:

integer

Default:

3600

Determines the lifetime for any SAML assertions generated by keystone, using NotOnOrAfter attributes.

xmlsec1_binary

Type:

string

Default:

xmlsec1

Name of, or absolute path to, the binary to be used for XML signing. Although only the XML Security Library (xmlsec1) is supported, it may have a non-standard name or path on your system. If keystone cannot find the binary itself, you may need to install the appropriate package, use this option to specify an absolute path, or adjust keystone’s PATH environment variable.

certfile

Type:

string

Default:

/etc/keystone/ssl/certs/signing_cert.pem

Absolute path to the public certificate file to use for SAML signing. The value cannot contain a comma (,).

keyfile

Type:

string

Default:

/etc/keystone/ssl/private/signing_key.pem

Absolute path to the private key file to use for SAML signing. The value cannot contain a comma (,).

idp_entity_id

Type:

URI

Default:

<None>

This is the unique entity identifier of the identity provider (keystone) to use when generating SAML assertions. This value is required to generate identity provider metadata and must be a URI (a URL is recommended). For example: https://keystone.example.com/v3/OS-FEDERATION/saml2/idp.

idp_sso_endpoint

Type:

URI

Default:

<None>

This is the single sign-on (SSO) service location of the identity provider which accepts HTTP POST requests. A value is required to generate identity provider metadata. For example: https://keystone.example.com/v3/OS-FEDERATION/saml2/sso.

idp_lang

Type:

string

Default:

en

This is the language used by the identity provider’s organization.

idp_organization_name

Type:

string

Default:

SAML Identity Provider

This is the name of the identity provider’s organization.

idp_organization_display_name

Type:

string

Default:

OpenStack SAML Identity Provider

This is the name of the identity provider’s organization to be displayed.

idp_organization_url

Type:

URI

Default:

https://example.com/

This is the URL of the identity provider’s organization. The URL referenced here should be useful to humans.

idp_contact_company

Type:

string

Default:

Example, Inc.

This is the company name of the identity provider’s contact person.

idp_contact_name

Type:

string

Default:

SAML Identity Provider Support

This is the given name of the identity provider’s contact person.

idp_contact_surname

Type:

string

Default:

Support

This is the surname of the identity provider’s contact person.

idp_contact_email

Type:

string

Default:

support@example.com

This is the email address of the identity provider’s contact person.

idp_contact_telephone

Type:

string

Default:

+1 800 555 0100

This is the telephone number of the identity provider’s contact person.

idp_contact_type

Type:

string

Default:

other

Valid Values:

technical, support, administrative, billing, other

This is the type of contact that best describes the identity provider’s contact person.

idp_metadata_path

Type:

string

Default:

/etc/keystone/saml2_idp_metadata.xml

Absolute path to the identity provider metadata file. This file should be generated with the keystone-manage saml_idp_metadata command. There is typically no reason to change this value.

relay_state_prefix

Type:

string

Default:

ss:mem:

The prefix of the RelayState SAML attribute to use when generating enhanced client and proxy (ECP) assertions. In a typical deployment, there is no reason to change this value.

security_compliance

disable_user_account_days_inactive

Type:

integer

Default:

<None>

Minimum Value:

1

The maximum number of days a user can go without authenticating before being considered “inactive” and automatically disabled (locked). This feature is disabled by default; set any value to enable it. This feature depends on the sql backend for the [identity] driver. When a user exceeds this threshold and is considered “inactive”, the user’s enabled attribute in the HTTP API may not match the value of the user’s enabled column in the user table.

lockout_failure_attempts

Type:

integer

Default:

<None>

Minimum Value:

1

The maximum number of times that a user can fail to authenticate before the user account is locked for the number of seconds specified by [security_compliance] lockout_duration. This feature is disabled by default. If this feature is enabled and [security_compliance] lockout_duration is not set, then users may be locked out indefinitely until the user is explicitly enabled via the API. This feature depends on the sql backend for the [identity] driver.

lockout_duration

Type:

integer

Default:

1800

Minimum Value:

1

The number of seconds a user account will be locked when the maximum number of failed authentication attempts (as specified by [security_compliance] lockout_failure_attempts) is exceeded. Setting this option will have no effect unless you also set [security_compliance] lockout_failure_attempts to a non-zero value. This feature depends on the sql backend for the [identity] driver.

password_expires_days

Type:

integer

Default:

<None>

Minimum Value:

1

The number of days for which a password will be considered valid before requiring it to be changed. This feature is disabled by default. If enabled, new password changes will have an expiration date, however existing passwords would not be impacted. This feature depends on the sql backend for the [identity] driver.

unique_last_password_count

Type:

integer

Default:

0

Minimum Value:

0

This controls the number of previous user password iterations to keep in history, in order to enforce that newly created passwords are unique. The total number which includes the new password should not be greater or equal to this value. Setting the value to zero (the default) disables this feature. Thus, to enable this feature, values must be greater than 0. This feature depends on the sql backend for the [identity] driver.

minimum_password_age

Type:

integer

Default:

0

Minimum Value:

0

The number of days that a password must be used before the user can change it. This prevents users from changing their passwords immediately in order to wipe out their password history and reuse an old password. This feature does not prevent administrators from manually resetting passwords. It is disabled by default and allows for immediate password changes. This feature depends on the sql backend for the [identity] driver. Note: If [security_compliance] password_expires_days is set, then the value for this option should be less than the password_expires_days.

password_regex

Type:

string

Default:

<None>

The regular expression used to validate password strength requirements. By default, the regular expression will match any password. The following is an example of a pattern which requires at least 1 letter, 1 digit, and have a minimum length of 7 characters: ^(?=.*\d)(?=.*[a-zA-Z]).{7,}$ This feature depends on the sql backend for the [identity] driver.

password_regex_description

Type:

string

Default:

<None>

Describe your password regular expression here in language for humans. If a password fails to match the regular expression, the contents of this configuration variable will be returned to users to explain why their requested password was insufficient.

change_password_upon_first_use

Type:

boolean

Default:

False

Enabling this option requires users to change their password when the user is created, or upon administrative reset. Before accessing any services, affected users will have to change their password. To ignore this requirement for specific users, such as service users, set the options attribute ignore_change_password_upon_first_use to True for the desired user via the update user API. This feature is disabled by default. This feature is only applicable with the sql backend for the [identity] driver.

shadow_users

driver

Type:

string

Default:

sql

Entry point for the shadow users backend driver in the keystone.identity.shadow_users namespace. This driver is used for persisting local user references to externally-managed identities (via federation, LDAP, etc). Keystone only provides a sql driver, so there is no reason to change this option unless you are providing a custom entry point.

token

expiration

Type:

integer

Default:

3600

Minimum Value:

0

Maximum Value:

9223372036854775807

The amount of time that a token should remain valid (in seconds). Drastically reducing this value may break “long-running” operations that involve multiple services to coordinate together, and will force users to authenticate with keystone more frequently. Drastically increasing this value will increase the number of tokens that will be simultaneously valid. Keystone tokens are also bearer tokens, so a shorter duration will also reduce the potential security impact of a compromised token.

provider

Type:

string

Default:

fernet

Entry point for the token provider in the keystone.token.provider namespace. The token provider controls the token construction, validation, and revocation operations. Supported upstream providers are fernet and jws. Neither fernet or jws tokens require persistence and both require additional setup. If using fernet, you’re required to run keystone-manage fernet_setup, which creates symmetric keys used to encrypt tokens. If using jws, you’re required to generate an ECDSA keypair using a SHA-256 hash algorithm for signing and validating token, which can be done with keystone-manage create_jws_keypair. Note that fernet tokens are encrypted and jws tokens are only signed. Please be sure to consider this if your deployment has security requirements regarding payload contents used to generate token IDs.

caching

Type:

boolean

Default:

True

Toggle for caching token creation and validation data. This has no effect unless global caching is enabled.

cache_time

Type:

integer

Default:

<None>

Minimum Value:

0

Maximum Value:

9223372036854775807

The number of seconds to cache token creation and validation data. This has no effect unless both global and [token] caching are enabled.

revoke_by_id

Type:

boolean

Default:

True

This toggles support for revoking individual tokens by the token identifier and thus various token enumeration operations (such as listing all tokens issued to a specific user). These operations are used to determine the list of tokens to consider revoked. Do not disable this option if you’re using the kvs [revoke] driver.

allow_rescope_scoped_token

Type:

boolean

Default:

True

This toggles whether scoped tokens may be re-scoped to a new project or domain, thereby preventing users from exchanging a scoped token (including those with a default project scope) for any other token. This forces users to either authenticate for unscoped tokens (and later exchange that unscoped token for tokens with a more specific scope) or to provide their credentials in every request for a scoped token to avoid re-scoping altogether.

cache_on_issue

Type:

boolean

Default:

True

Enable storing issued token data to token validation cache so that first token validation doesn’t actually cause full validation cycle. This option has no effect unless global caching is enabled and will still cache tokens even if [token] caching = False.

Warning

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

Reason:

Keystone already exposes a configuration option for caching tokens. Having a separate configuration option to cache tokens when they are issued is redundant, unnecessarily complicated, and is misleading if token caching is disabled because tokens will still be pre-cached by default when they are issued. The ability to pre-cache tokens when they are issued is going to rely exclusively on the keystone.conf [token] caching option in the future.

allow_expired_window

Type:

integer

Default:

172800

This controls the number of seconds that a token can be retrieved for beyond the built-in expiry time. This allows long running operations to succeed. Defaults to two days.

tokenless_auth

trusted_issuer

Type:

multi-valued

Default:

''

The list of distinguished names which identify trusted issuers of client certificates allowed to use X.509 tokenless authorization. If the option is absent then no certificates will be allowed. The format for the values of a distinguished name (DN) must be separated by a comma and contain no spaces. Furthermore, because an individual DN may contain commas, this configuration option may be repeated multiple times to represent multiple values. For example, keystone.conf would include two consecutive lines in order to trust two different DNs, such as trusted_issuer = CN=john,OU=keystone,O=openstack and trusted_issuer = CN=mary,OU=eng,O=abc.

protocol

Type:

string

Default:

x509

The federated protocol ID used to represent X.509 tokenless authorization. This is used in combination with the value of [tokenless_auth] issuer_attribute to find a corresponding federated mapping. In a typical deployment, there is no reason to change this value.

issuer_attribute

Type:

string

Default:

SSL_CLIENT_I_DN

The name of the WSGI environment variable used to pass the issuer of the client certificate to keystone. This attribute is used as an identity provider ID for the X.509 tokenless authorization along with the protocol to look up its corresponding mapping. In a typical deployment, there is no reason to change this value.

totp

included_previous_windows

Type:

integer

Default:

1

Minimum Value:

0

Maximum Value:

10

The number of previous windows to check when processing TOTP passcodes.

trust

allow_redelegation

Type:

boolean

Default:

False

Allows authorization to be redelegated from one user to another, effectively chaining trusts together. When disabled, the remaining_uses attribute of a trust is constrained to be zero.

max_redelegation_count

Type:

integer

Default:

3

Maximum number of times that authorization can be redelegated from one user to another in a chain of trusts. This number may be reduced further for a specific trust.

driver

Type:

string

Default:

sql

Entry point for the trust backend driver in the keystone.trust namespace. Keystone only provides a sql driver, so there is no reason to change this unless you are providing a custom entry point.

unified_limit

driver

Type:

string

Default:

sql

Entry point for the unified limit backend driver in the keystone.unified_limit namespace. Keystone only provides a sql driver, so there’s no reason to change this unless you are providing a custom entry point.

caching

Type:

boolean

Default:

True

Toggle for unified limit caching. This has no effect unless global caching is enabled. In a typical deployment, there is no reason to disable this.

cache_time

Type:

integer

Default:

<None>

Time to cache unified limit data, in seconds. This has no effect unless both global caching and [unified_limit] caching are enabled.

list_limit

Type:

integer

Default:

<None>

Maximum number of entities that will be returned in a unified limit collection. This may be useful to tune if you have a large number of unified limits in your deployment.

enforcement_model

Type:

string

Default:

flat

Valid Values:

flat, strict_two_level

The enforcement model to use when validating limits associated to projects. Enforcement models will behave differently depending on the existing limits, which may result in backwards incompatible changes if a model is switched in a running deployment.

wsgi

debug_middleware

Type:

boolean

Default:

False

If set to true, this enables the oslo debug middleware in Keystone. This Middleware prints a lot of information about the request and the response. It is useful for getting information about the data on the wire (decoded) and passed to the WSGI application pipeline. This middleware has no effect on the “debug” setting in the [DEFAULT] section of the config file or setting Keystone’s log-level to “DEBUG”; it is specific to debugging the WSGI data as it enters and leaves Keystone (specific request-related data). This option is used for introspection on the request and response data between the web server (apache, nginx, etc) and Keystone. This middleware is inserted as the first element in the middleware chain and will show the data closest to the wire. WARNING: NOT INTENDED FOR USE IN PRODUCTION. THIS MIDDLEWARE CAN AND WILL EMIT SENSITIVE/PRIVILEGED DATA.

Domain-specific Identity drivers

The Identity service supports domain-specific Identity drivers installed on an SQL or LDAP back end, and supports domain-specific Identity configuration options, which are stored in domain-specific configuration files. See Domain-specific configuration for more information.