Chapter 1. barbican The following chapter contains information about the configuration options in the barbican service. 1.1. barbican.conf This section contains options for the /etc/barbican/barbican.conf file. 1.1.1. DEFAULT The following table outlines the options available under the [DEFAULT] group in the /etc/barbican/barbican.conf file. . Configuration option = Default value Type Description admin_role = admin string value Role used to identify an authenticated user as administrator. allow_anonymous_access = False boolean value Allow unauthenticated users to access the API with read-only privileges. This only applies when using ContextMiddleware. api_paste_config = api-paste.ini string value File name for the paste.deploy config for api service backdoor_port = None string value 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 = None string value Enable eventlet backdoor, using the provided path as a unix socket that can receive connections. This option is mutually exclusive with backdoor_port in that only one should be provided. If both are provided then the existence of this option overrides the usage of that option. Inside the path {pid} will be replaced with the PID of the current process. client_socket_timeout = 900 integer value Timeout for client connections' socket operations. If an incoming connection is idle for this number of seconds it will be closed. A value of 0 means wait forever. conn_pool_min_size = 2 integer value The pool size limit for connections expiration policy conn_pool_ttl = 1200 integer value The time-to-live in sec of idle connections in the pool control_exchange = openstack string value The default exchange under which topics are scoped. May be overridden by an exchange name specified in the transport_url option. db_auto_create = False boolean value Create the Barbican database on service startup. debug = False boolean value If set to true, the logging level will be set to DEBUG instead of the default INFO level. default_limit_paging = 10 integer value Default page size for the limit paging URL parameter. default_log_levels = ['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 value List of package logging levels in logger=LEVEL pairs. This option is ignored if log_config_append is set. executor_thread_pool_size = 64 integer value Size of executor thread pool when executor is threading or eventlet. fatal_deprecations = False boolean value Enables or disables fatal status of deprecations. graceful_shutdown_timeout = 60 integer value Specify a timeout after which a gracefully shutdown server will exit. Zero value means endless wait. host_href = http://localhost:9311 string value Host name, for use in HATEOAS-style references Note: Typically this would be the load balanced endpoint that clients would use to communicate back with this service. If a deployment wants to derive host from wsgi request instead then make this blank. Blank is needed to override default config value which is http://localhost:9311 `instance_format = [instance: %(uuid)s] ` string value The format for an instance that is passed with the log message. `instance_uuid_format = [instance: %(uuid)s] ` string value The format for an instance UUID that is passed with the log message. log-config-append = None string value 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). log-date-format = %Y-%m-%d %H:%M:%S string value Defines the format string for %%(asctime)s in log records. Default: %(default)s . This option is ignored if log_config_append is set. log-dir = None string value (Optional) The base directory used for relative log_file paths. This option is ignored if log_config_append is set. log-file = None string value (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. log_options = True boolean value Enables or disables logging values of all registered options when starting a service (at DEBUG level). log_rotate_interval = 1 integer value 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 = days string value Rotation interval type. The time of the last file change (or the time when the service was started) is used when scheduling the rotation. log_rotation_type = none string value Log rotation type. logging_context_format_string = %(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [%(global_request_id)s %(request_id)s %(user_identity)s] %(instance)s%(message)s string value Format string to use for log messages with context. Used by oslo_log.formatters.ContextFormatter logging_debug_format_suffix = %(funcName)s %(pathname)s:%(lineno)d string value Additional data to append to log message when logging level for the message is DEBUG. Used by oslo_log.formatters.ContextFormatter logging_default_format_string = %(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [-] %(instance)s%(message)s string value Format string to use for log messages when context is undefined. Used by oslo_log.formatters.ContextFormatter logging_exception_prefix = %(asctime)s.%(msecs)03d %(process)d ERROR %(name)s %(instance)s string value Prefix each line of exception output with this format. Used by oslo_log.formatters.ContextFormatter logging_user_identity_format = %(user)s %(project)s %(domain)s %(system_scope)s %(user_domain)s %(project_domain)s string value Defines the format string for %(user_identity)s that is used in logging_context_format_string. Used by oslo_log.formatters.ContextFormatter max_allowed_request_size_in_bytes = 25000 integer value Maximum allowed http request size against the barbican-api. max_allowed_secret_in_bytes = 20000 integer value Maximum allowed secret size in bytes. max_header_line = 16384 integer value Maximum line size of message headers to be accepted. max_header_line may need to be increased when using large tokens (typically those generated when keystone is configured to use PKI tokens with big service catalogs). max_limit_paging = 100 integer value Maximum page size for the limit paging URL parameter. max_logfile_count = 30 integer value Maximum number of rotated log files. max_logfile_size_mb = 200 integer value Log file maximum size in MB. This option is ignored if "log_rotation_type" is not set to "size". publish_errors = False boolean value Enables or disables publication of error events. rate_limit_burst = 0 integer value Maximum number of logged messages per rate_limit_interval. rate_limit_except_level = CRITICAL string value 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. rate_limit_interval = 0 integer value Interval, number of seconds, of log rate limiting. rpc_conn_pool_size = 30 integer value Size of RPC connection pool. rpc_ping_enabled = False boolean value Add an endpoint to answer to ping calls. Endpoint is named oslo_rpc_server_ping rpc_response_timeout = 60 integer value Seconds to wait for a response from a call. run_external_periodic_tasks = True boolean value Some periodic tasks can be run in a separate process. Should we run them here? sql_connection = sqlite:///barbican.sqlite string value SQLAlchemy connection string for the reference implementation registry server. Any valid SQLAlchemy connection string is fine. See: http://www.sqlalchemy.org/docs/05/reference/sqlalchemy/connections.html#sqlalchemy.create_engine . Note: For absolute addresses, use //// slashes after sqlite: . sql_idle_timeout = 3600 integer value Period in seconds after which SQLAlchemy should reestablish its connection to the database. MySQL uses a default wait_timeout of 8 hours, after which it will drop idle connections. This can result in MySQL Gone Away exceptions. If you notice this, you can lower this value to ensure that SQLAlchemy reconnects before MySQL can drop the connection. sql_max_retries = 60 integer value Maximum number of database connection retries during startup. Set to -1 to specify an infinite retry count. sql_pool_class = QueuePool string value Accepts a class imported from the sqlalchemy.pool module, and handles the details of building the pool for you. If commented out, SQLAlchemy will select based on the database dialect. Other options are QueuePool (for SQLAlchemy-managed connections) and NullPool (to disabled SQLAlchemy management of connections). See http://docs.sqlalchemy.org/en/latest/core/pooling.html for more details sql_pool_logging = False boolean value Show SQLAlchemy pool-related debugging output in logs (sets DEBUG log level output) if specified. sql_pool_max_overflow = 10 integer value The maximum overflow size of the pool used by SQLAlchemy. When the number of checked-out connections reaches the size set in sql_pool_size, additional connections will be returned up to this limit. It follows then that the total number of simultaneous connections the pool will allow is sql_pool_size + sql_pool_max_overflow. Can be set to -1 to indicate no overflow limit, so no limit will be placed on the total number of concurrent connections. Comment out to allow SQLAlchemy to select the default. sql_pool_size = 5 integer value Size of pool used by SQLAlchemy. This is the largest number of connections that will be kept persistently in the pool. Can be set to 0 to indicate no size limit. To disable pooling, use a NullPool with sql_pool_class instead. Comment out to allow SQLAlchemy to select the default. sql_retry_interval = 1 integer value Interval between retries of opening a SQL connection. syslog-log-facility = LOG_USER string value Syslog facility to receive log lines. This option is ignored if log_config_append is set. tcp_keepidle = 600 integer value Sets the value of TCP_KEEPIDLE in seconds for each server socket. Not supported on OS X. transport_url = rabbit:// string value 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 use-journal = False boolean value 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. use-json = False boolean value Use JSON formatting for logging. This option is ignored if log_config_append is set. use-syslog = False boolean value 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_eventlog = False boolean value Log output to Windows Event Log. use_stderr = False boolean value Log output to standard error. This option is ignored if log_config_append is set. watch-log-file = False boolean value 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. wsgi_default_pool_size = 100 integer value Size of the pool of greenthreads used by wsgi wsgi_keep_alive = True boolean value If False, closes the client socket connection explicitly. wsgi_log_format = %(client_ip)s "%(request_line)s" status: %(status_code)s len: %(body_length)s time: %(wall_seconds).7f string value A python format string that is used as the template to generate log lines. The following values can beformatted into it: client_ip, date_time, request_line, status_code, body_length, wall_seconds. wsgi_server_debug = False boolean value True if the server should send exception tracebacks to the clients on 500 errors. If False, the server will respond with empty bodies. 1.1.2. audit_middleware_notifications The following table outlines the options available under the [audit_middleware_notifications] group in the /etc/barbican/barbican.conf file. Table 1.1. audit_middleware_notifications Configuration option = Default value Type Description driver = None string value The Driver to handle sending notifications. Possible values are messaging, messagingv2, routing, log, test, noop. If not specified, then value from oslo_messaging_notifications conf section is used. topics = None list value List of AMQP topics used for OpenStack notifications. If not specified, then value from oslo_messaging_notifications conf section is used. transport_url = None string value A URL representing messaging driver to use for notification. If not specified, we fall back to the same configuration used for RPC. use_oslo_messaging = True boolean value Indicate whether to use oslo_messaging as the notifier. If set to False, the local logger will be used as the notifier. If set to True, the oslo_messaging package must also be present. Otherwise, the local will be used instead. 1.1.3. certificate The following table outlines the options available under the [certificate] group in the /etc/barbican/barbican.conf file. Table 1.2. certificate Configuration option = Default value Type Description enabled_certificate_plugins = ['simple_certificate'] multi valued List of certificate plugins to load. namespace = barbican.certificate.plugin string value Extension namespace to search for plugins. 1.1.4. certificate_event The following table outlines the options available under the [certificate_event] group in the /etc/barbican/barbican.conf file. Table 1.3. certificate_event Configuration option = Default value Type Description enabled_certificate_event_plugins = ['simple_certificate_event'] multi valued List of certificate plugins to load. namespace = barbican.certificate.event.plugin string value Extension namespace to search for eventing plugins. 1.1.5. cors The following table outlines the options available under the [cors] group in the /etc/barbican/barbican.conf file. Table 1.4. cors Configuration option = Default value Type Description allow_credentials = True boolean value Indicate that the actual request can include user credentials allow_headers = ['X-Auth-Token', 'X-Openstack-Request-Id', 'X-Project-Id', 'X-Identity-Status', 'X-User-Id', 'X-Storage-Token', 'X-Domain-Id', 'X-User-Domain-Id', 'X-Project-Domain-Id', 'X-Roles'] list value Indicate which header field names may be used during the actual request. allow_methods = ['GET', 'PUT', 'POST', 'DELETE', 'PATCH'] list value Indicate which methods can be used during the actual request. allowed_origin = None list value 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 expose_headers = ['X-Auth-Token', 'X-Openstack-Request-Id', 'X-Project-Id', 'X-Identity-Status', 'X-User-Id', 'X-Storage-Token', 'X-Domain-Id', 'X-User-Domain-Id', 'X-Project-Domain-Id', 'X-Roles'] list value Indicate which headers are safe to expose to the API. Defaults to HTTP Simple Headers. max_age = 3600 integer value Maximum cache age of CORS preflight requests. 1.1.6. crypto The following table outlines the options available under the [crypto] group in the /etc/barbican/barbican.conf file. Table 1.5. crypto Configuration option = Default value Type Description enabled_crypto_plugins = ['simple_crypto'] multi valued List of crypto plugins to load. namespace = barbican.crypto.plugin string value Extension namespace to search for plugins. 1.1.7. dogtag_plugin The following table outlines the options available under the [dogtag_plugin] group in the /etc/barbican/barbican.conf file. Table 1.6. dogtag_plugin Configuration option = Default value Type Description auto_approved_profiles = caServerCert string value List of automatically approved enrollment profiles ca_expiration_time = 1 integer value Time in days for CA entries to expire dogtag_host = localhost string value Hostname for the Dogtag instance dogtag_port = 8443 port value Port for the Dogtag instance nss_db_path = /etc/barbican/alias string value Path to the NSS certificate database nss_password = None string value Password for the NSS certificate databases pem_path = /etc/barbican/kra_admin_cert.pem string value Path to PEM file for authentication plugin_name = Dogtag KRA string value User friendly plugin name plugin_working_dir = /etc/barbican/dogtag string value Working directory for Dogtag plugin retries = 3 integer value Retries when storing or generating secrets simple_cmc_profile = caOtherCert string value Profile for simple CMC requests 1.1.8. healthcheck The following table outlines the options available under the [healthcheck] group in the /etc/barbican/barbican.conf file. Table 1.7. healthcheck Configuration option = Default value Type Description backends = [] list value Additional backends that can perform health checks and report that information back as part of a request. detailed = False boolean value 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. disable_by_file_path = None string value Check the presence of a file to determine if an application is running on a port. Used by DisableByFileHealthcheck plugin. disable_by_file_paths = [] list value 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. path = /healthcheck string value The path to respond to healtcheck requests on. 1.1.9. keystone_authtoken The following table outlines the options available under the [keystone_authtoken] group in the /etc/barbican/barbican.conf file. Table 1.8. keystone_authtoken Configuration option = Default value Type Description auth_section = None string value Config Section from which to load plugin specific options auth_type = None string value Authentication type to load auth_uri = None string value 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. Deprecated since: Queens *Reason:*The auth_uri option is deprecated in favor of www_authenticate_uri and will be removed in the S release. auth_version = None string value API version of the Identity API endpoint. cache = None string value 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. cafile = None string value A PEM encoded Certificate Authority to use when verifying HTTPs connections. Defaults to system CAs. certfile = None string value Required if identity server requires client certificate delay_auth_decision = False boolean value Do not handle authorization requests within the middleware, but delegate the authorization decision to downstream WSGI components. enforce_token_bind = permissive string value 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. http_connect_timeout = None integer value Request timeout value for communicating with Identity API server. http_request_max_retries = 3 integer value How many times are we trying to reconnect when communicating with Identity API Server. include_service_catalog = True boolean value (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. insecure = False boolean value Verify HTTPS connections. interface = internal string value Interface to use for the Identity API endpoint. Valid values are "public", "internal" (default) or "admin". keyfile = None string value Required if identity server requires client certificate memcache_pool_conn_get_timeout = 10 integer value (Optional) Number of seconds that an operation will wait to get a memcached client connection from the pool. memcache_pool_dead_retry = 300 integer value (Optional) Number of seconds memcached server is considered dead before it is tried again. memcache_pool_maxsize = 10 integer value (Optional) Maximum total number of open connections to every memcached server. memcache_pool_socket_timeout = 3 integer value (Optional) Socket timeout in seconds for communicating with a memcached server. memcache_pool_unused_timeout = 60 integer value (Optional) Number of seconds a connection to memcached is held unused in the pool before it is closed. memcache_secret_key = None string value (Optional, mandatory if memcache_security_strategy is defined) This string is used for key derivation. memcache_security_strategy = None string value (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_use_advanced_pool = True boolean value (Optional) Use the advanced (eventlet safe) memcached client pool. memcached_servers = None list value Optionally specify a list of memcached server(s) to use for caching. If left undefined, tokens will instead be cached in-process. region_name = None string value The region in which the identity server can be found. service_token_roles = ['service'] list value 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 = False boolean value For backwards compatibility reasons we must let valid service tokens pass that don't pass the service_token_roles check as valid. Setting this true will become the default in a future release and should be enabled if possible. service_type = None string value The name or type of the service as it appears in the service catalog. This is used to validate tokens that have restricted access rules. token_cache_time = 300 integer value 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. www_authenticate_uri = None string value 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. 1.1.10. keystone_notifications The following table outlines the options available under the [keystone_notifications] group in the /etc/barbican/barbican.conf file. Table 1.9. keystone_notifications Configuration option = Default value Type Description allow_requeue = False boolean value True enables requeue feature in case of notification processing error. Enable this only when underlying transport supports this feature. control_exchange = keystone string value The default exchange under which topics are scoped. May be overridden by an exchange name specified in the transport_url option. enable = False boolean value True enables keystone notification listener functionality. pool_name = None string value Pool name for notifications listener. Setting this to a distinctive value will allow barbican notifications listener to receive its own copy of all messages from the topic without without interfering with other services listening on the same topic. This feature is supported only by some oslo.messaging backends (in particilar by rabbitmq) and for those it is preferrable to use it instead of separate notification topic for barbican. thread_pool_size = 10 integer value Define the number of max threads to be used for notification server processing functionality. topic = notifications string value Keystone notification queue topic name. This name needs to match one of values mentioned in Keystone deployment's notification_topics configuration e.g. notification_topics=notifications, barbican_notificationsMultiple servers may listen on a topic and messages will be dispatched to one of the servers in a round-robin fashion. That's why Barbican service should have its own dedicated notification queue so that it receives all of Keystone notifications. Alternatively if the chosen oslo.messaging backend supports listener pooling (for example rabbitmq), setting a non-default pool_name option should be preferred. version = 1.0 string value Version of tasks invoked via notifications 1.1.11. kmip_plugin The following table outlines the options available under the [kmip_plugin] group in the /etc/barbican/barbican.conf file. Table 1.10. kmip_plugin Configuration option = Default value Type Description ca_certs = None string value File path to concatenated "certification authority" certificates certfile = None string value File path to local client certificate host = localhost string value Address of the KMIP server keyfile = None string value File path to local client certificate keyfile password = None string value Password for authenticating with KMIP server pkcs1_only = False boolean value Only support PKCS#1 encoding of asymmetric keys plugin_name = KMIP HSM string value User friendly plugin name port = 5696 port value Port for the KMIP server ssl_version = PROTOCOL_TLSv1_2 string value SSL version, maps to the module ssl's constants username = None string value Username for authenticating with KMIP server 1.1.12. oslo_messaging_amqp The following table outlines the options available under the [oslo_messaging_amqp] group in the /etc/barbican/barbican.conf file. Table 1.11. oslo_messaging_amqp Configuration option = Default value Type Description addressing_mode = dynamic string value 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 anycast_address = anycast string value 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. broadcast_prefix = broadcast string value address prefix used when broadcasting to all servers connection_retry_backoff = 2 integer value Increase the connection_retry_interval by this many seconds after each unsuccessful failover attempt. connection_retry_interval = 1 integer value Seconds to pause before attempting to re-connect. connection_retry_interval_max = 30 integer value Maximum limit for connection_retry_interval + connection_retry_backoff container_name = None string value Name for the AMQP container. must be globally unique. Defaults to a generated UUID default_notification_exchange = None string value 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_notify_timeout = 30 integer value The deadline for a sent notification message delivery. Only used when caller does not provide a timeout expiry. default_reply_retry = 0 integer value The maximum number of attempts to re-send a reply message which failed due to a recoverable error. default_reply_timeout = 30 integer value The deadline for an rpc reply message delivery. default_rpc_exchange = None string value 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 default_send_timeout = 30 integer value The deadline for an rpc cast or call message delivery. Only used when caller does not provide a timeout expiry. default_sender_link_timeout = 600 integer value The duration to schedule a purge of idle sender links. Detach link after expiry. group_request_prefix = unicast string value address prefix when sending to any server in group idle_timeout = 0 integer value Timeout for inactive connections (in seconds) link_retry_delay = 10 integer value Time to pause between re-connecting an AMQP 1.0 link that failed due to a recoverable error. multicast_address = multicast string value Appended to the address prefix when sending a fanout message. Used by the message bus to identify fanout messages. notify_address_prefix = openstack.org/om/notify string value Address prefix for all generated Notification addresses notify_server_credit = 100 integer value Window size for incoming Notification messages pre_settled = ['rpc-cast', 'rpc-reply'] multi valued 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 pseudo_vhost = True boolean value 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. reply_link_credit = 200 integer value Window size for incoming RPC Reply messages. rpc_address_prefix = openstack.org/om/rpc string value Address prefix for all generated RPC addresses rpc_server_credit = 100 integer value Window size for incoming RPC Request messages `sasl_config_dir = ` string value Path to directory that contains the SASL configuration `sasl_config_name = ` string value Name of configuration file (without .conf suffix) `sasl_default_realm = ` string value SASL realm to use if no realm present in username `sasl_mechanisms = ` string value Space separated list of acceptable SASL mechanisms server_request_prefix = exclusive string value address prefix used when sending to a specific server ssl = False boolean value 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 = ` string value CA certificate PEM file used to verify the server's certificate `ssl_cert_file = ` string value Self-identifying certificate PEM file for client authentication `ssl_key_file = ` string value Private key PEM file used to sign ssl_cert_file certificate (optional) ssl_key_password = None string value Password for decrypting ssl_key_file (if encrypted) ssl_verify_vhost = False boolean value 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. trace = False boolean value Debug: dump AMQP frames to stdout unicast_address = unicast string value 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. 1.1.13. oslo_messaging_kafka The following table outlines the options available under the [oslo_messaging_kafka] group in the /etc/barbican/barbican.conf file. Table 1.12. oslo_messaging_kafka Configuration option = Default value Type Description compression_codec = none string value 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 conn_pool_min_size = 2 integer value The pool size limit for connections expiration policy conn_pool_ttl = 1200 integer value The time-to-live in sec of idle connections in the pool consumer_group = oslo_messaging_consumer string value Group id for Kafka consumer. Consumers in one group will coordinate message consumption enable_auto_commit = False boolean value Enable asynchronous consumer commits kafka_consumer_timeout = 1.0 floating point value Default timeout(s) for Kafka consumers kafka_max_fetch_bytes = 1048576 integer value Max fetch bytes of Kafka consumer max_poll_records = 500 integer value The maximum number of records returned in a poll call pool_size = 10 integer value Pool Size for Kafka Consumers producer_batch_size = 16384 integer value Size of batch for the producer async send producer_batch_timeout = 0.0 floating point value Upper bound on the delay for KafkaProducer batching in seconds sasl_mechanism = PLAIN string value Mechanism when security protocol is SASL security_protocol = PLAINTEXT string value Protocol used to communicate with brokers `ssl_cafile = ` string value CA certificate PEM file used to verify the server certificate `ssl_client_cert_file = ` string value Client certificate PEM file used for authentication. `ssl_client_key_file = ` string value Client key PEM file used for authentication. `ssl_client_key_password = ` string value Client key password file used for authentication. 1.1.14. oslo_messaging_notifications The following table outlines the options available under the [oslo_messaging_notifications] group in the /etc/barbican/barbican.conf file. Table 1.13. oslo_messaging_notifications Configuration option = Default value Type Description driver = [] multi valued The Drivers(s) to handle sending notifications. Possible values are messaging, messagingv2, routing, log, test, noop retry = -1 integer value 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 topics = ['notifications'] list value AMQP topic used for OpenStack notifications. transport_url = None string value A URL representing the messaging driver to use for notifications. If not set, we fall back to the same configuration used for RPC. 1.1.15. oslo_messaging_rabbit The following table outlines the options available under the [oslo_messaging_rabbit] group in the /etc/barbican/barbican.conf file. Table 1.14. oslo_messaging_rabbit Configuration option = Default value Type Description amqp_auto_delete = False boolean value Auto-delete queues in AMQP. amqp_durable_queues = False boolean value Use durable queues in AMQP. If rabbit_quorum_queue is enabled, queues will be durable and this value will be ignored. direct_mandatory_flag = True boolean value (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 enable_cancel_on_failover = False boolean value Enable x-cancel-on-ha-failover flag so that rabbitmq server will cancel and notify consumerswhen queue is down heartbeat_in_pthread = False boolean value 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. heartbeat_rate = 2 integer value How often times during the heartbeat_timeout_threshold we check the heartbeat. heartbeat_timeout_threshold = 60 integer value Number of seconds after which the Rabbit broker is considered down if heartbeat's keep-alive fails (0 disables heartbeat). kombu_compression = None string value EXPERIMENTAL: Possible values are: gzip, bz2. If not set compression will not be used. This option may not be available in future versions. kombu_failover_strategy = round-robin string value Determines how the 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. kombu_missing_consumer_retry_timeout = 60 integer value How long to wait a missing client before abandoning to send it its replies. This value should not be longer than rpc_response_timeout. kombu_reconnect_delay = 1.0 floating point value How long to wait (in seconds) before reconnecting in response to an AMQP consumer cancel notification. rabbit_ha_queues = False boolean value 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"} " rabbit_interval_max = 30 integer value Maximum interval of RabbitMQ connection retries. Default is 30 seconds. rabbit_login_method = AMQPLAIN string value The RabbitMQ login method. rabbit_qos_prefetch_count = 0 integer value Specifies the number of messages to prefetch. Setting to zero allows unlimited messages. rabbit_quorum_delivery_limit = 0 integer value 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_bytes = 0 integer value By default all messages are maintained in memory if a quorum queue grows in length it can put memory pressure on a cluster. This option can limit the number of memory bytes used by the quorum queue. Used only when rabbit_quorum_queue is enabled, Default 0 which means dont set a limit. rabbit_quorum_max_memory_length = 0 integer value By default all messages are maintained in memory if a quorum queue grows in length it can put memory pressure on a cluster. This option can limit the number of messages in the quorum queue. Used only when rabbit_quorum_queue is enabled, Default 0 which means dont set a limit. rabbit_quorum_queue = False boolean value Use quorum queues in RabbitMQ (x-queue-type: quorum). The quorum queue is a modern queue type for RabbitMQ implementing a durable, replicated FIFO queue based on the Raft consensus algorithm. It is available as of RabbitMQ 3.8.0. If set this option will conflict with the HA queues ( rabbit_ha_queues ) aka mirrored queues, in other words the HA queues should be disabled, quorum queues durable by default so the amqp_durable_queues opion is ignored when this option enabled. rabbit_retry_backoff = 2 integer value How long to backoff for between retries when connecting to RabbitMQ. rabbit_retry_interval = 1 integer value How frequently to retry connecting with RabbitMQ. rabbit_transient_queues_ttl = 1800 integer value 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. ssl = False boolean value Connect over SSL. `ssl_ca_file = ` string value SSL certification authority file (valid only if SSL enabled). `ssl_cert_file = ` string value SSL cert file (valid only if SSL enabled). ssl_enforce_fips_mode = False boolean value 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. `ssl_key_file = ` string value SSL key file (valid only if SSL enabled). `ssl_version = ` string value 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. 1.1.16. oslo_middleware The following table outlines the options available under the [oslo_middleware] group in the /etc/barbican/barbican.conf file. Table 1.15. oslo_middleware Configuration option = Default value Type Description enable_proxy_headers_parsing = False boolean value Whether the application is behind a proxy or not. This determines if the middleware should parse the headers or not. 1.1.17. oslo_policy The following table outlines the options available under the [oslo_policy] group in the /etc/barbican/barbican.conf file. Table 1.16. oslo_policy Configuration option = Default value Type Description enforce_new_defaults = False boolean value 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. enforce_scope = False boolean value 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_default_rule = default string value Default rule. Enforced when a requested rule is not found. policy_dirs = ['policy.d'] multi valued 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. policy_file = policy.yaml string value 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. remote_content_type = application/x-www-form-urlencoded string value Content Type to send and receive data for REST based policy check remote_ssl_ca_crt_file = None string value Absolute path to ca cert file for REST based policy check remote_ssl_client_crt_file = None string value Absolute path to client cert for REST based policy check remote_ssl_client_key_file = None string value Absolute path client key file REST based policy check remote_ssl_verify_server_crt = False boolean value server identity verification for REST based policy check 1.1.18. p11_crypto_plugin The following table outlines the options available under the [p11_crypto_plugin] group in the /etc/barbican/barbican.conf file. Table 1.17. p11_crypto_plugin Configuration option = Default value Type Description aes_gcm_generate_iv = True boolean value Generate IVs for CKM_AES_GCM mechanism. always_set_cka_sensitive = True boolean value Always set CKA_SENSITIVE=CK_TRUE including CKA_EXTRACTABLE=CK_TRUE keys. encryption_mechanism = CKM_AES_CBC string value Secret encryption mechanism hmac_key_type = CKK_AES string value HMAC Key Type hmac_keygen_mechanism = CKM_AES_KEY_GEN string value HMAC Key Generation Algorithm used to create the master HMAC Key. hmac_label = None string value Master HMAC Key label (as stored in the HSM) hmac_mechanism = CKM_SHA256_HMAC string value HMAC algorithm used to sign encrypted data. key_wrap_generate_iv = True boolean value Generate IVs for Key Wrapping mechanism. key_wrap_mechanism = CKM_AES_CBC_PAD string value Key Wrapping algorithm used to wrap Project KEKs. library_path = None string value Path to vendor PKCS11 library login = None string value Password (PIN) to login to PKCS11 session mkek_label = None string value Master KEK label (as stored in the HSM) mkek_length = None integer value Master KEK length in bytes. os_locking_ok = False boolean value Enable CKF_OS_LOCKING_OK flag when initializing the PKCS#11 client library. pkek_cache_limit = 100 integer value Project KEK Cache Item Limit pkek_cache_ttl = 900 integer value Project KEK Cache Time To Live, in seconds pkek_length = 32 integer value Project KEK length in bytes. plugin_name = PKCS11 HSM string value User friendly plugin name rw_session = True boolean value Flag for Read/Write Sessions `seed_file = ` string value File to pull entropy for seeding RNG seed_length = 32 integer value Amount of data to read from file for seed slot_id = 1 integer value (Optional) HSM Slot ID that contains the token device to be used. token_label = None string value DEPRECATED: Use token_labels instead. Token label used to identify the token to be used. token_labels = None list value List of labels for one or more tokens to be used. Typically this is a single label, but some HSM devices may require more than one label for Load Balancing or High Availability configurations. token_serial_number = None string value Token serial number used to identify the token to be used. 1.1.19. queue The following table outlines the options available under the [queue] group in the /etc/barbican/barbican.conf file. Table 1.18. queue Configuration option = Default value Type Description asynchronous_workers = 1 integer value Number of asynchronous worker processes enable = False boolean value True enables queuing, False invokes workers synchronously namespace = barbican string value Queue namespace server_name = barbican.queue string value Server name for RPC task processing server topic = barbican.workers string value Queue topic name version = 1.1 string value Version of tasks invoked via queue 1.1.20. quotas The following table outlines the options available under the [quotas] group in the /etc/barbican/barbican.conf file. Table 1.19. quotas Configuration option = Default value Type Description quota_cas = -1 integer value Number of CAs allowed per project quota_consumers = -1 integer value Number of consumers allowed per project quota_containers = -1 integer value Number of containers allowed per project quota_orders = -1 integer value Number of orders allowed per project quota_secrets = -1 integer value Number of secrets allowed per project 1.1.21. retry_scheduler The following table outlines the options available under the [retry_scheduler] group in the /etc/barbican/barbican.conf file. Table 1.20. retry_scheduler Configuration option = Default value Type Description initial_delay_seconds = 10.0 floating point value Seconds (float) to wait before starting retry scheduler periodic_interval_max_seconds = 10.0 floating point value Seconds (float) to wait between periodic schedule events 1.1.22. secretstore The following table outlines the options available under the [secretstore] group in the /etc/barbican/barbican.conf file. Table 1.21. secretstore Configuration option = Default value Type Description enable_multiple_secret_stores = False boolean value Flag to enable multiple secret store plugin backend support. Default is False enabled_secretstore_plugins = ['store_crypto'] multi valued List of secret store plugins to load. namespace = barbican.secretstore.plugin string value Extension namespace to search for plugins. stores_lookup_suffix = None list value List of suffix to use for looking up plugins which are supported with multiple backend support. 1.1.23. simple_crypto_plugin The following table outlines the options available under the [simple_crypto_plugin] group in the /etc/barbican/barbican.conf file. Table 1.22. simple_crypto_plugin Configuration option = Default value Type Description kek = dGhpcnR5X3R3b19ieXRlX2tleWJsYWhibGFoYmxhaGg= string value Key encryption key to be used by Simple Crypto Plugin plugin_name = Software Only Crypto string value User friendly plugin name 1.1.24. snakeoil_ca_plugin The following table outlines the options available under the [snakeoil_ca_plugin] group in the /etc/barbican/barbican.conf file. Table 1.23. snakeoil_ca_plugin Configuration option = Default value Type Description ca_cert_chain_path = None string value Path to CA certificate chain file ca_cert_key_path = None string value Path to CA certificate key file ca_cert_path = None string value Path to CA certificate file ca_cert_pkcs7_path = None string value Path to CA chain pkcs7 file subca_cert_key_directory = /etc/barbican/snakeoil-cas string value Directory in which to store certs/keys for subcas 1.1.25. ssl The following table outlines the options available under the [ssl] group in the /etc/barbican/barbican.conf file. Table 1.24. ssl Configuration option = Default value Type Description ca_file = None string value CA certificate file to use to verify connecting clients. cert_file = None string value Certificate file to use when starting the server securely. ciphers = None string value Sets the list of available ciphers. value should be a string in the OpenSSL cipher list format. key_file = None string value Private key file to use when starting the server securely. version = None string value 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. 1.1.26. vault_plugin The following table outlines the options available under the [vault_plugin] group in the /etc/barbican/barbican.conf file. Table 1.25. vault_plugin Configuration option = Default value Type Description approle_role_id = None string value AppRole role_id for authentication with vault approle_secret_id = None string value AppRole secret_id for authentication with vault kv_mountpoint = secret string value Mountpoint of KV store in Vault to use, for example: secret root_token_id = None string value root token for vault ssl_ca_crt_file = None string value Absolute path to ca cert file use_ssl = False boolean value SSL Enabled/Disabled vault_url = http://127.0.0.1:8200 string value Use this endpoint to connect to Vault, for example: "http://127.0.0.1:8200"

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