Configuration options for the Acceleration service¶

The following options can be set in the /etc/cyborg/cyborg.conf config file A sample configuration file is also available.

run_external_periodic_tasks¶

Type:	boolean
Default:	true

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

backdoor_port¶

Type:	string
Default:	<None>

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

backdoor_socket¶

Type:	string
Default:	<None>

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

log_options¶

Type:	boolean
Default:	true

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

graceful_shutdown_timeout¶

Type:	integer
Default:	60

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

rpc_conn_pool_size¶

Type:	integer
Default:	30

Size of RPC connection pool.

Deprecated Variations¶

Group	Name
DEFAULT	rpc_conn_pool_size

conn_pool_min_size¶

Type:	integer
Default:	2

The pool size limit for connections expiration policy

conn_pool_ttl¶

Type:	integer
Default:	1200

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

executor_thread_pool_size¶

Type:	integer
Default:	64

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

Deprecated Variations¶

Group	Name
DEFAULT	rpc_thread_pool_size

rpc_response_timeout¶

Type:	integer
Default:	60

Seconds to wait for a response from a call.

transport_url¶

Type:	string
Default:	rabbit://

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

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

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

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

control_exchange¶

Type:	string
Default:	openstack

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

debug¶

Type:	boolean
Default:	false
Mutable:	This option can be changed without restarting.

If set to true, the logging level will be set to DEBUG instead of the default INFO level.

log_config_append¶

Type:	string
Default:	<None>
Mutable:	This option can be changed without restarting.

The name of a logging configuration file. This file is appended to any existing logging configuration files. For details about logging configuration files, see the Python logging module documentation. Note that when logging configuration files are used then all logging configuration is set in the configuration file and other logging configuration options are ignored (for example, log-date-format).

Deprecated Variations¶

Group	Name
DEFAULT	log-config
DEFAULT	log_config

log_date_format¶

Type:	string
Default:	%Y-%m-%d %H:%M:%S

Defines the format string for %(asctime)s in log records. Default: the value above . This option is ignored if log_config_append is set.

log_file¶

Type:	string
Default:	<None>

(Optional) Name of log file to send logging output to. If no default is set, logging will go to stderr as defined by use_stderr. This option is ignored if log_config_append is set.

Deprecated Variations¶

Group	Name
DEFAULT	logfile

log_dir¶

Type:	string
Default:	<None>

(Optional) The base directory used for relative log_file paths. This option is ignored if log_config_append is set.

Deprecated Variations¶

Group	Name
DEFAULT	logdir

watch_log_file¶

Type:	boolean
Default:	false

Uses logging handler designed to watch file system. When log file is moved or removed this handler will open a new log file with specified path instantaneously. It makes sense only if log_file option is specified and Linux platform is used. This option is ignored if log_config_append is set.

use_syslog¶

Type:	boolean
Default:	false

Use syslog for logging. Existing syslog format is DEPRECATED and will be changed later to honor RFC5424. This option is ignored if log_config_append is set.

use_journal¶

Type:	boolean
Default:	false

Enable journald for logging. If running in a systemd environment you may wish to enable journal support. Doing so will use the journal native protocol which includes structured metadata in addition to log messages.This option is ignored if log_config_append is set.

syslog_log_facility¶

Type:	string
Default:	LOG_USER

Syslog facility to receive log lines. This option is ignored if log_config_append is set.

use_json¶

Type:	boolean
Default:	false

Use JSON formatting for logging. This option is ignored if log_config_append is set.

use_stderr¶

Type:	boolean
Default:	false

Log output to standard error. This option is ignored if log_config_append is set.

use_eventlog¶

Type:	boolean
Default:	false

Log output to Windows Event Log.

log_rotate_interval¶

Type:	integer
Default:	1

The amount of time before the log files are rotated. This option is ignored unless log_rotation_type is setto “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 [%(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 %(tenant)s %(domain)s %(user_domain)s %(project_domain)s

Defines the format string for %(user_identity)s that is used in logging_context_format_string. Used by oslo_log.formatters.ContextFormatter

default_log_levels¶

Type:

list

Default:

amqp=WARN,amqplib=WARN,boto=WARN,qpid=WARN,sqlalchemy=WARN,suds=INFO,oslo.messaging=INFO,oslo_messaging=INFO,iso8601=WARN,requests.packages.urllib3.connectionpool=WARN,urllib3.connectionpool=WARN,websocket=WARN,requests.packages.urllib3.util.retry=WARN,urllib3.util.retry=WARN,keystonemiddleware=WARN,routes.middleware=WARN,stevedore=WARN,taskflow=WARN,keystoneauth=WARN,oslo.cache=INFO,oslo_policy=INFO,dogpile.core.dogpile=INFO

List of package logging levels in logger=LEVEL pairs. This option is ignored if log_config_append is set.

publish_errors¶

Type:	boolean
Default:	false

Enables or disables publication of error events.

instance_format¶

Type:	string
Default:	"[instance: %(uuid)s] "

The format for an instance that is passed with the log message.

instance_uuid_format¶

Type:	string
Default:	"[instance: %(uuid)s] "

The format for an instance UUID that is passed with the log message.

rate_limit_interval¶

Type:	integer
Default:	0

Interval, number of seconds, of log rate limiting.

rate_limit_burst¶

Type:	integer
Default:	0

Maximum number of logged messages per rate_limit_interval.

rate_limit_except_level¶

Type:	string
Default:	CRITICAL

Log level name used by rate limiting: CRITICAL, ERROR, INFO, WARNING, DEBUG or empty string. Logs with level greater or equal to rate_limit_except_level are not filtered. An empty string means that all levels are filtered.

fatal_deprecations¶

Type:	boolean
Default:	false

Enables or disables fatal status of deprecations.

fatal_exception_format_errors¶

Type:	boolean
Default:	false

Used if there is a formatting error when generating an exception message (a programming error). If True, raise an exception; if False, use the unformatted message.

host¶

Type:	host address
Default:	localhost

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

Name of this node. This can be an opaque identifier. It is not necessarily a hostname, FQDN, or IP address. However, the node name must be valid within an AMQP key, and if using ZeroMQ, a valid hostname, FQDN, or IP address.

periodic_interval¶

Type:	integer
Default:	60

Default interval (in seconds) for running periodic tasks.

pybasedir¶

Type:	string
Default:	/usr/lib/python/site-packages/cyborg/cyborg

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

Directory where the cyborg python module is installed.

bindir¶

Type:	string
Default:	$pybasedir/bin

Directory where cyborg binaries are installed.

state_path¶

Type:	string
Default:	$pybasedir

Top-level directory for maintaining cyborg’s state.

enabled_drivers¶

Type:	list
Default:	''

The accelerator drivers enabled on this agent. Such as intel_fpga_driver, nvidia_gpu_driver, etc.

host_ip¶

Type:	host address
Default:	0.0.0.0

The IP address on which cyborg-api listens.

port¶

Type:	port number
Default:	6666
Minimum Value:	0
Maximum Value:	65535

The TCP port on which cyborg-api listens.

api_workers¶

Type:	integer
Default:	<None>

Number of workers for OpenStack Cyborg API service. The default is equal to the number of CPUs available if that can be determined, else a default worker count of 1 is returned.

enable_ssl_api¶

Type:	boolean
Default:	false

Enable the integrated stand-alone API to service requests via HTTPS instead of HTTP. If there is a front-end service performing HTTPS offloading from the service, this option should be False; note, you will want to change public API endpoint to represent SSL termination URL with ‘public_endpoint’ option.

public_endpoint¶

Type:	string
Default:	<None>

Public URL to use when building the links to the API resources (for example, “https://cyborg.rocks:6666”). If None the links will be built using the request’s host URL. If the API is operating behind a proxy, you will want to change this to represent the proxy’s URL. Defaults to None.

api_paste_config¶

Type:	string
Default:	api-paste.ini

Configuration file for WSGI definition of API.

sqlite_synchronous¶

Type:	boolean
Default:	true

If True, SQLite uses synchronous mode.

Deprecated Variations¶

Group	Name
DEFAULT	sqlite_synchronous

backend¶

Type:	string
Default:	sqlalchemy

The back end to use for the database.

Deprecated Variations¶

Group	Name
DEFAULT	db_backend

connection¶

Type:	string
Default:	<None>

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

Deprecated Variations¶

Group	Name
DEFAULT	sql_connection
DATABASE	sql_connection
sql	connection

slave_connection¶

Type:	string
Default:	<None>

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

mysql_sql_mode¶

Type:	string
Default:	TRADITIONAL

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

mysql_enable_ndb¶

Type:	boolean
Default:	false

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

connection_recycle_time¶

Type:	integer
Default:	3600

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

Deprecated Variations¶

Group	Name
DATABASE	idle_timeout
database	idle_timeout
DEFAULT	sql_idle_timeout
DATABASE	sql_idle_timeout
sql	idle_timeout

min_pool_size¶

Type:	integer
Default:	1

Minimum number of SQL connections to keep open in a pool.

Deprecated Variations¶

Group	Name
DEFAULT	sql_min_pool_size
DATABASE	sql_min_pool_size

Warning

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

Reason:	The option to set the minimum pool size is not supported by sqlalchemy.

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.

Deprecated Variations¶

Group	Name
DEFAULT	sql_max_pool_size
DATABASE	sql_max_pool_size

max_retries¶

Type:	integer
Default:	10

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

Deprecated Variations¶

Group	Name
DEFAULT	sql_max_retries
DATABASE	sql_max_retries

retry_interval¶

Type:	integer
Default:	10

Interval between retries of opening a SQL connection.

Deprecated Variations¶

Group	Name
DEFAULT	sql_retry_interval
DATABASE	reconnect_interval

max_overflow¶

Type:	integer
Default:	50

If set, use this value for max_overflow with SQLAlchemy.

Deprecated Variations¶

Group	Name
DEFAULT	sql_max_overflow
DATABASE	sqlalchemy_max_overflow

connection_debug¶

Type:	integer
Default:	0
Minimum Value:	0
Maximum Value:	100

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

Deprecated Variations¶

Group	Name
DEFAULT	sql_connection_debug

connection_trace¶

Type:	boolean
Default:	false

Add Python stack traces to SQL as comment strings.

Deprecated Variations¶

Group	Name
DEFAULT	sql_connection_trace

pool_timeout¶

Type:	integer
Default:	<None>

If set, use this value for pool_timeout with SQLAlchemy.

Deprecated Variations¶

Group	Name
DATABASE	sqlalchemy_pool_timeout

use_db_reconnect¶

Type:	boolean
Default:	false

Enable the experimental use of database reconnect on connection lost.

db_retry_interval¶

Type:	integer
Default:	1

Seconds between retries of a database transaction.

db_inc_retry_interval¶

Type:	boolean
Default:	true

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

db_max_retry_interval¶

Type:	integer
Default:	10

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

db_max_retries¶

Type:	integer
Default:	20

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

connection_parameters¶

Type:	string
Default:	''

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

mysql_engine¶

Type:	string
Default:	InnoDB

MySQL engine to use.

api_servers¶

Type:	list
Default:	<None>

List of glance api servers endpoints available to cyborg.

https is used for ssl-based glance api servers.

NOTE: The preferred mechanism for endpoint discovery is via keystoneauth1 loading options. Only use api_servers if you need multiple endpoints and are unable to use a load balancer for some reason.

Possible values:

• A list of any fully qualified url of the form “scheme://hostname:port[/path]” (i.e. “http://10.0.1.0:9292” or “https://my.glance.server/image”).

num_retries¶

Type:	integer
Default:	0
Minimum Value:	0

Enable glance operation retries.

Specifies the number of retries when uploading / downloading an image to / from glance. 0 means no retries.

allowed_direct_url_schemes¶

Type:	list
Default:	''

List of url schemes that can be directly accessed.

This option specifies a list of url schemes that can be downloaded directly via the direct_url. This direct_URL can be fetched from Image metadata which can be used by cyborg to get the image more efficiently. cyborg-compute could benefit from this by invoking a copy when it has access to the same file system as glance.

Possible values:

• [file], Empty list (default)

Warning

This option is deprecated for removal since 17.0.0. Its value may be silently ignored in the future.

Reason:	This was originally added for the ‘cyborg.image.download.file’ FileTransfer extension which was removed in the 16.0.0 Pike release. The ‘cyborg.image.download.modules’ extension point is not maintained and there is no indication of its use in production clouds.

verify_glance_signatures¶

Type:	boolean
Default:	false

Enable image signature verification.

cyborg uses the image signature metadata from glance and verifies the signature of a signed image while downloading that image. If the image signature cannot be verified or if the image signature metadata is either incomplete or unavailable, then cyborg will not boot the image and instead will place the instance into an error state. This provides end users with stronger assurances of the integrity of the image data they are using to create servers.

Related options:

• The options in the key_manager group, as the key_manager is used for the signature validation.
• Both enable_certificate_validation and default_trusted_certificate_ids below depend on this option being enabled.

enable_certificate_validation¶

Type:	boolean
Default:	false

Enable certificate validation for image signature verification.

During image signature verification cyborg will first verify the validity of the image’s signing certificate using the set of trusted certificates associated with the instance. If certificate validation fails, signature verification will not be performed and the instance will be placed into an error state. This provides end users with stronger assurances that the image data is unmodified and trustworthy. If left disabled, image signature verification can still occur but the end user will not have any assurance that the signing certificate used to generate the image signature is still trustworthy.

Related options:

• This option only takes effect if verify_glance_signatures is enabled.
• The value of default_trusted_certificate_ids may be used when this option is enabled.

Warning

This option is deprecated for removal since 16.0.0. Its value may be silently ignored in the future.

Reason:	This option is intended to ease the transition for deployments leveraging image signature verification. The intended state long-term is for signature verification and certificate validation to always happen together.

default_trusted_certificate_ids¶

Type:	list
Default:	''

List of certificate IDs for certificates that should be trusted.

May be used as a default list of trusted certificate IDs for certificate validation. The value of this option will be ignored if the user provides a list of trusted certificate IDs with an instance API request. The value of this option will be persisted with the instance data if signature verification and certificate validation are enabled and if the user did not provide an alternative list. If left empty when certificate validation is enabled the user must provide a list of trusted certificate IDs otherwise certificate validation will fail.

Related options:

• The value of this option may be used if both verify_glance_signatures and enable_certificate_validation are enabled.

debug¶

Type:	boolean
Default:	false

Enable or disable debug logging with glanceclient.

cafile¶

Type:	string
Default:	<None>

PEM encoded Certificate Authority to use when verifying HTTPs connections.

certfile¶

Type:	string
Default:	<None>

PEM encoded client certificate cert file

keyfile¶

Type:	string
Default:	<None>

PEM encoded client certificate key file

insecure¶

Type:	boolean
Default:	false

Verify HTTPS connections.

timeout¶

Type:	integer
Default:	<None>

Timeout value for http requests

collect_timing¶

Type:	boolean
Default:	false

Collect per-API call timing information.

split_loggers¶

Type:	boolean
Default:	false

Log requests to multiple loggers.

service_type¶

Type:	string
Default:	image

The default service_type for endpoint URL discovery.

service_name¶

Type:	string
Default:	<None>

The default service_name for endpoint URL discovery.

valid_interfaces¶

Type:	list
Default:	internal,public

List of interfaces, in order of preference, for endpoint URL.

region_name¶

Type:	string
Default:	<None>

The default region_name for endpoint URL discovery.

endpoint_override¶

Type:	string
Default:	<None>

Always use this endpoint URL for requests for this client. NOTE: The unversioned endpoint should be specified here; to request a particular API version, use the version, min-version, and/or max-version options.

cafile¶

Type:	string
Default:	<None>

PEM encoded Certificate Authority to use when verifying HTTPs connections.

certfile¶

Type:	string
Default:	<None>

PEM encoded client certificate cert file

keyfile¶

Type:	string
Default:	<None>

PEM encoded client certificate key file

insecure¶

Type:	boolean
Default:	false

Verify HTTPS connections.

timeout¶

Type:	integer
Default:	<None>

Timeout value for http requests

collect_timing¶

Type:	boolean
Default:	false

Collect per-API call timing information.

split_loggers¶

Type:	boolean
Default:	false

Log requests to multiple loggers.

service_type¶

Type:	string
Default:	identity

The default service_type for endpoint URL discovery.

service_name¶

Type:	string
Default:	<None>

The default service_name for endpoint URL discovery.

valid_interfaces¶

Type:	list
Default:	internal,public

List of interfaces, in order of preference, for endpoint URL.

region_name¶

Type:	string
Default:	<None>

The default region_name for endpoint URL discovery.

endpoint_override¶

Type:	string
Default:	<None>

Always use this endpoint URL for requests for this client. NOTE: The unversioned endpoint should be specified here; to request a particular API version, use the version, min-version, and/or max-version options.

www_authenticate_uri¶

Type:	string
Default:	<None>

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

Deprecated Variations¶

Group	Name
keystone_authtoken	auth_uri

auth_uri¶

Type:	string
Default:	<None>

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

Warning

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

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

auth_version¶

Type:	string
Default:	<None>

API version of the admin Identity API endpoint.

delay_auth_decision¶

Type:	boolean
Default:	false

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

http_connect_timeout¶

Type:	integer
Default:	<None>

Request timeout value for communicating with Identity API server.

http_request_max_retries¶

Type:	integer
Default:	3

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

cache¶

Type:	string
Default:	<None>

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

certfile¶

Type:	string
Default:	<None>

Required if identity server requires client certificate

keyfile¶

Type:	string
Default:	<None>

Required if identity server requires client certificate

cafile¶

Type:	string
Default:	<None>

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

insecure¶

Type:	boolean
Default:	false

Verify HTTPS connections.

region_name¶

Type:	string
Default:	<None>

The region in which the identity server can be found.

signing_dir¶

Type:	string
Default:	<None>

Directory used to cache files related to PKI tokens. This option has been deprecated in the Ocata release and will be removed in the P release.

Warning

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

Reason:	PKI token format is no longer supported.

memcached_servers¶

Type:	list
Default:	<None>

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

Deprecated Variations¶

Group	Name
keystone_authtoken	memcache_servers

token_cache_time¶

Type:	integer
Default:	300

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

memcache_security_strategy¶

Type:	string
Default:	None
Valid Values:	None, MAC, ENCRYPT

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

memcache_secret_key¶

Type:	string
Default:	<None>

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

memcache_pool_dead_retry¶

Type:	integer
Default:	300

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

memcache_pool_maxsize¶

Type:	integer
Default:	10

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

memcache_pool_socket_timeout¶

Type:	integer
Default:	3

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

memcache_pool_unused_timeout¶

Type:	integer
Default:	60

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

memcache_pool_conn_get_timeout¶

Type:	integer
Default:	10

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

memcache_use_advanced_pool¶

Type:	boolean
Default:	false

(Optional) Use the advanced (eventlet safe) memcached client pool. The advanced pool will only work under python 2.x.

include_service_catalog¶

Type:	boolean
Default:	true

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

enforce_token_bind¶

Type:	string
Default:	permissive

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

hash_algorithms¶

Type:	list
Default:	md5

Hash algorithms to use for hashing PKI tokens. This may be a single algorithm or multiple. The algorithms are those supported by Python standard hashlib.new(). The hashes will be tried in the order given, so put the preferred one first for performance. The result of the first hash will be stored in the cache. This will typically be set to multiple values only while migrating from a less secure algorithm to a more secure one. Once all the old tokens are expired this option should be set to a single value for better performance.

Warning

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

Reason:	PKI token format is no longer supported.

service_token_roles¶

Type:	list
Default:	service

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

service_token_roles_required¶

Type:	boolean
Default:	false

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

auth_type¶

Type:	unknown type
Default:	<None>

Authentication type to load

Deprecated Variations¶

Group	Name
keystone_authtoken	auth_plugin

auth_section¶

Type:	unknown type
Default:	<None>

Config Section from which to load plugin specific options

container_name¶

Type:	string
Default:	<None>

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

Deprecated Variations¶

Group	Name
amqp1	container_name

idle_timeout¶

Type:	integer
Default:	0

Timeout for inactive connections (in seconds)

Deprecated Variations¶

Group	Name
amqp1	idle_timeout

trace¶

Type:	boolean
Default:	false

Debug: dump AMQP frames to stdout

Deprecated Variations¶

Group	Name
amqp1	trace

ssl¶

Type:	boolean
Default:	false

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

ssl_ca_file¶

Type:	string
Default:	''

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

Deprecated Variations¶

Group	Name
amqp1	ssl_ca_file

ssl_cert_file¶

Type:	string
Default:	''

Self-identifying certificate PEM file for client authentication

Deprecated Variations¶

Group	Name
amqp1	ssl_cert_file

ssl_key_file¶

Type:	string
Default:	''

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

Deprecated Variations¶

Group	Name
amqp1	ssl_key_file

ssl_key_password¶

Type:	string
Default:	<None>

Password for decrypting ssl_key_file (if encrypted)

Deprecated Variations¶

Group	Name
amqp1	ssl_key_password

ssl_verify_vhost¶

Type:	boolean
Default:	false

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

sasl_mechanisms¶

Type:	string
Default:	''

Space separated list of acceptable SASL mechanisms

Deprecated Variations¶

Group	Name
amqp1	sasl_mechanisms

sasl_config_dir¶

Type:	string
Default:	''

Path to directory that contains the SASL configuration

Deprecated Variations¶

Group	Name
amqp1	sasl_config_dir

sasl_config_name¶

Type:	string
Default:	''

Name of configuration file (without .conf suffix)

Deprecated Variations¶

Group	Name
amqp1	sasl_config_name

sasl_default_realm¶

Type:	string
Default:	''

SASL realm to use if no realm present in username

connection_retry_interval¶

Type:	integer
Default:	1
Minimum Value:	1

Seconds to pause before attempting to re-connect.

connection_retry_backoff¶

Type:	integer
Default:	2
Minimum Value:	0

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

connection_retry_interval_max¶

Type:	integer
Default:	30
Minimum Value:	1

Maximum limit for connection_retry_interval + connection_retry_backoff

link_retry_delay¶

Type:	integer
Default:	10
Minimum Value:	1

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

default_reply_retry¶

Type:	integer
Default:	0
Minimum Value:	-1

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

default_reply_timeout¶

Type:	integer
Default:	30
Minimum Value:	5

The deadline for an rpc reply message delivery.

default_send_timeout¶

Type:	integer
Default:	30
Minimum Value:	5

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

default_notify_timeout¶

Type:	integer
Default:	30
Minimum Value:	5

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

default_sender_link_timeout¶

Type:	integer
Default:	600
Minimum Value:	1

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

addressing_mode¶

Type:	string
Default:	dynamic

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

pseudo_vhost¶

Type:	boolean
Default:	true

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

server_request_prefix¶

Type:	string
Default:	exclusive

address prefix used when sending to a specific server

Deprecated Variations¶

Group	Name
amqp1	server_request_prefix

broadcast_prefix¶

Type:	string
Default:	broadcast

address prefix used when broadcasting to all servers

Deprecated Variations¶

Group	Name
amqp1	broadcast_prefix

group_request_prefix¶

Type:	string
Default:	unicast

address prefix when sending to any server in group

Deprecated Variations¶

Group	Name
amqp1	group_request_prefix

rpc_address_prefix¶

Type:	string
Default:	openstack.org/om/rpc

Address prefix for all generated RPC addresses

notify_address_prefix¶

Type:	string
Default:	openstack.org/om/notify

Address prefix for all generated Notification addresses

multicast_address¶

Type:	string
Default:	multicast

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

unicast_address¶

Type:	string
Default:	unicast

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

anycast_address¶

Type:	string
Default:	anycast

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

default_notification_exchange¶

Type:	string
Default:	<None>

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

default_rpc_exchange¶

Type:	string
Default:	<None>

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

reply_link_credit¶

Type:	integer
Default:	200
Minimum Value:	1

Window size for incoming RPC Reply messages.

rpc_server_credit¶

Type:	integer
Default:	100
Minimum Value:	1

Window size for incoming RPC Request messages

notify_server_credit¶

Type:	integer
Default:	100
Minimum Value:	1

Window size for incoming Notification messages

pre_settled¶

Type:	multi-valued
Default:	rpc-cast
Default:	rpc-reply

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

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

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

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

amqp_durable_queues¶

Type:	boolean
Default:	false

Use durable queues in AMQP.

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

kombu_reconnect_delay¶

Type:	floating point
Default:	1.0

How long to wait 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, 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_transient_queues_ttl¶

Type:	integer
Default:	1800
Minimum Value:	1

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

rabbit_qos_prefetch_count¶

Type:	integer
Default:	0

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

heartbeat_timeout_threshold¶

Type:	integer
Default:	60

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

heartbeat_rate¶

Type:	integer
Default:	2

How often times during the heartbeat_timeout_threshold we check the heartbeat.

enforce_scope¶

Type:	boolean
Default:	false

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

policy_file¶

Type:	string
Default:	policy.json

The file that defines policies.

Deprecated Variations¶

Group	Name
DEFAULT	policy_file

policy_default_rule¶

Type:	string
Default:	default

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

Deprecated Variations¶

Group	Name
DEFAULT	policy_default_rule

policy_dirs¶

Type:	multi-valued
Default:	policy.d

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

Deprecated Variations¶

Group	Name
DEFAULT	policy_dirs

remote_content_type¶

Type:	string
Default:	application/x-www-form-urlencoded
Valid Values:	application/x-www-form-urlencoded, application/json

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

remote_ssl_verify_server_crt¶

Type:	boolean
Default:	false

server identity verification for REST based policy check

remote_ssl_ca_crt_file¶

Type:	string
Default:	<None>

Absolute path to ca cert file for REST based policy check

remote_ssl_client_crt_file¶

Type:	string
Default:	<None>

Absolute path to client cert for REST based policy check

remote_ssl_client_key_file¶

Type:	string
Default:	<None>

Absolute path client key file REST based policy check

endpoint_type¶

Type:	string
Default:	public
Valid Values:	public, admin, internal

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

randomize_allocation_candidates¶

Type:	boolean
Default:	false

If True, when limiting allocation candidate results, the results will be a random sampling of the full result set. If False, allocation candidates are returned in a deterministic but undefined order. That is, all things being equal, two requests for allocation candidates will return the same results in the same order; but no guarantees are made as to how that order is determined.

cafile¶

Type:	string
Default:	<None>

PEM encoded Certificate Authority to use when verifying HTTPs connections.

certfile¶

Type:	string
Default:	<None>

PEM encoded client certificate cert file

keyfile¶

Type:	string
Default:	<None>

PEM encoded client certificate key file

insecure¶

Type:	boolean
Default:	false

Verify HTTPS connections.

timeout¶

Type:	integer
Default:	<None>

Timeout value for http requests

collect_timing¶

Type:	boolean
Default:	false

Collect per-API call timing information.

split_loggers¶

Type:	boolean
Default:	false

Log requests to multiple loggers.

auth_type¶

Type:	unknown type
Default:	<None>

Authentication type to load

Deprecated Variations¶

Group	Name
placement	auth_plugin

auth_section¶

Type:	unknown type
Default:	<None>

Config Section from which to load plugin specific options

auth_url¶

Type:	unknown type
Default:	<None>

Authentication URL

system_scope¶

Type:	unknown type
Default:	<None>

Scope for system operations

domain_id¶

Type:	unknown type
Default:	<None>

Domain ID to scope to

domain_name¶

Type:	unknown type
Default:	<None>

Domain name to scope to

project_id¶

Type:	unknown type
Default:	<None>

Project ID to scope to

project_name¶

Type:	unknown type
Default:	<None>

Project name to scope to

project_domain_id¶

Type:	unknown type
Default:	<None>

Domain ID containing project

project_domain_name¶

Type:	unknown type
Default:	<None>

Domain name containing project

trust_id¶

Type:	unknown type
Default:	<None>

Trust ID

default_domain_id¶

Type:	unknown type
Default:	<None>

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

default_domain_name¶

Type:	unknown type
Default:	<None>

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

user_id¶

Type:	unknown type
Default:	<None>

User ID

username¶

Type:	unknown type
Default:	<None>

Username

Deprecated Variations¶

Group	Name
placement	user-name
placement	user_name

user_domain_id¶

Type:	unknown type
Default:	<None>

User’s domain id

user_domain_name¶

Type:	unknown type
Default:	<None>

User’s domain name

password¶

Type:	unknown type
Default:	<None>

User’s password

tenant_id¶

Type:	unknown type
Default:	<None>

Tenant ID

tenant_name¶

Type:	unknown type
Default:	<None>

Tenant Name

service_type¶

Type:	string
Default:	placement

The default service_type for endpoint URL discovery.

service_name¶

Type:	string
Default:	<None>

The default service_name for endpoint URL discovery.

valid_interfaces¶

Type:	list
Default:	internal,public

List of interfaces, in order of preference, for endpoint URL.

region_name¶

Type:	string
Default:	<None>

The default region_name for endpoint URL discovery.

endpoint_override¶

Type:	string
Default:	<None>

Always use this endpoint URL for requests for this client. NOTE: The unversioned endpoint should be specified here; to request a particular API version, use the version, min-version, and/or max-version options.

send_service_user_token¶

Type:	boolean
Default:	false

When True, if sending a user token to a REST API, also send a service token.

cafile¶

Type:	string
Default:	<None>

PEM encoded Certificate Authority to use when verifying HTTPs connections.

certfile¶

Type:	string
Default:	<None>

PEM encoded client certificate cert file

keyfile¶

Type:	string
Default:	<None>

PEM encoded client certificate key file

insecure¶

Type:	boolean
Default:	false

Verify HTTPS connections.

timeout¶

Type:	integer
Default:	<None>

Timeout value for http requests

collect_timing¶

Type:	boolean
Default:	false

Collect per-API call timing information.

split_loggers¶

Type:	boolean
Default:	false

Log requests to multiple loggers.

auth_type¶

Type:	unknown type
Default:	<None>

Authentication type to load

Deprecated Variations¶

Group	Name
service_user	auth_plugin

auth_section¶

Type:	unknown type
Default:	<None>

Config Section from which to load plugin specific options

auth_url¶

Type:	unknown type
Default:	<None>

Authentication URL

system_scope¶

Type:	unknown type
Default:	<None>

Scope for system operations

domain_id¶

Type:	unknown type
Default:	<None>

Domain ID to scope to

domain_name¶

Type:	unknown type
Default:	<None>

Domain name to scope to

project_id¶

Type:	unknown type
Default:	<None>

Project ID to scope to

project_name¶

Type:	unknown type
Default:	<None>

Project name to scope to

project_domain_id¶

Type:	unknown type
Default:	<None>

Domain ID containing project

project_domain_name¶

Type:	unknown type
Default:	<None>

Domain name containing project

trust_id¶

Type:	unknown type
Default:	<None>

Trust ID

default_domain_id¶

Type:	unknown type
Default:	<None>

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

default_domain_name¶

Type:	unknown type
Default:	<None>

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

user_id¶

Type:	unknown type
Default:	<None>

User ID

username¶

Type:	unknown type
Default:	<None>

Username

Deprecated Variations¶

Group	Name
service_user	user-name
service_user	user_name

user_domain_id¶

Type:	unknown type
Default:	<None>

User’s domain id

user_domain_name¶

Type:	unknown type
Default:	<None>

User’s domain name

password¶

Type:	unknown type
Default:	<None>

User’s password

tenant_id¶

Type:	unknown type
Default:	<None>

Tenant ID

tenant_name¶

Type:	unknown type
Default:	<None>

Tenant Name

ca_file¶

Type:	string
Default:	<None>

CA certificate file to use to verify connecting clients.

Deprecated Variations¶

Group	Name
DEFAULT	ssl_ca_file

cert_file¶

Type:	string
Default:	<None>

Certificate file to use when starting the server securely.

Deprecated Variations¶

Group	Name
DEFAULT	ssl_cert_file

key_file¶

Type:	string
Default:	<None>

Private key file to use when starting the server securely.

Deprecated Variations¶

Group	Name
DEFAULT	ssl_key_file

version¶

Type:	string
Default:	<None>

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

ciphers¶

Type:	string
Default:	<None>

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