Sample Configuration File

The following is a sample Placement configuration for adaptation and use. For a detailed overview of all available configuration options, refer to Configuration Options.

The sample configuration can also be viewed in file form.

Important

The sample configuration file is auto-generated from placement when this documentation is built. You must ensure your version of placement matches the version of this documentation.

[DEFAULT]

#
# From oslo.log
#

# If set to true, the logging level will be set to DEBUG instead of the default
# INFO level. (boolean value)
# Note: This option can be changed without restarting.
#debug = false

# 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). (string value)
# Note: This option can be changed without restarting.
# Deprecated group/name - [DEFAULT]/log_config
#log_config_append = <None>

# Defines the format string for %%(asctime)s in log records. Default:
# %(default)s . This option is ignored if log_config_append is set. (string
# value)
#log_date_format = %Y-%m-%d %H:%M:%S

# (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. (string value)
# Deprecated group/name - [DEFAULT]/logfile
#log_file = <None>

# (Optional) The base directory used for relative log_file  paths. This option
# is ignored if log_config_append is set. (string value)
# Deprecated group/name - [DEFAULT]/logdir
#log_dir = <None>

# 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. (boolean
# value)
#watch_log_file = 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. (boolean value)
#use_syslog = 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. (boolean value)
#use_journal = false

# Syslog facility to receive log lines. This option is ignored if
# log_config_append is set. (string value)
#syslog_log_facility = LOG_USER

# Use JSON formatting for logging. This option is ignored if log_config_append
# is set. (boolean value)
#use_json = false

# Log output to standard error. This option is ignored if log_config_append is
# set. (boolean value)
#use_stderr = false

# DEPRECATED: Log output to Windows Event Log. (boolean value)
# This option is deprecated for removal.
# Its value may be silently ignored in the future.
# Reason: Windows support is no longer maintained.
#use_eventlog = false

# The amount of time before the log files are rotated. This option is ignored
# unless log_rotation_type is set to "interval". (integer value)
#log_rotate_interval = 1

# 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. (string value)
# Possible values:
# Seconds - <No description provided>
# Minutes - <No description provided>
# Hours - <No description provided>
# Days - <No description provided>
# Weekday - <No description provided>
# Midnight - <No description provided>
#log_rotate_interval_type = days

# Maximum number of rotated log files. (integer value)
#max_logfile_count = 30

# Log file maximum size in MB. This option is ignored if "log_rotation_type" is
# not set to "size". (integer value)
#max_logfile_size_mb = 200

# Log rotation type. (string value)
# Possible values:
# interval - Rotate logs at predefined time intervals.
# size - Rotate logs once they reach a predefined size.
# none - Do not rotate log files.
#log_rotation_type = none

# Format string to use for log messages with context. Used by
# oslo_log.formatters.ContextFormatter (string value)
#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

# Format string to use for log messages when context is undefined. Used by
# oslo_log.formatters.ContextFormatter (string value)
#logging_default_format_string = %(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [-] %(instance)s%(message)s

# Additional data to append to log message when logging level for the message is
# DEBUG. Used by oslo_log.formatters.ContextFormatter (string value)
#logging_debug_format_suffix = %(funcName)s %(pathname)s:%(lineno)d

# Prefix each line of exception output with this format. Used by
# oslo_log.formatters.ContextFormatter (string value)
#logging_exception_prefix = %(asctime)s.%(msecs)03d %(process)d ERROR %(name)s %(instance)s

# Defines the format string for %(user_identity)s that is used in
# logging_context_format_string. Used by oslo_log.formatters.ContextFormatter
# (string value)
#logging_user_identity_format = %(user)s %(project)s %(domain)s %(system_scope)s %(user_domain)s %(project_domain)s

# List of package logging levels in logger=LEVEL pairs. This option is ignored
# if log_config_append is set. (list value)
#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

# Enables or disables publication of error events. (boolean value)
#publish_errors = false

# The format for an instance that is passed with the log message. (string value)
#instance_format = "[instance: %(uuid)s] "

# The format for an instance UUID that is passed with the log message. (string
# value)
#instance_uuid_format = "[instance: %(uuid)s] "

# Interval, number of seconds, of log rate limiting. (integer value)
#rate_limit_interval = 0

# Maximum number of logged messages per rate_limit_interval. (integer value)
#rate_limit_burst = 0

# 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. (string
# value)
#rate_limit_except_level = CRITICAL

# Enables or disables fatal status of deprecations. (boolean value)
#fatal_deprecations = false

#
# From placement.conf
#

# Explicitly specify the temporary working directory. (string value)
#tempdir = <None>

#
# The directory where the Placement python modules are installed.
#
# This is the default path for other config options which need to persist
# Placement internal data. It is very unlikely that you need to
# change this option from its default value.
#
# Possible values:
#
# * The full path to a directory.
#
# Related options:
#
# * ``state_path``
#  (string value)
#
# This option has a sample default set, which means that
# its actual default value may vary from the one documented
# below.
#pybasedir = <Path>

#
# The top-level directory for maintaining state used in Placement.
#
# This directory is used to store Placement's internal state. It is used by some
# tests that have behaviors carried over from Nova.
#
# Possible values:
#
# * The full path to a directory. Defaults to value provided in ``pybasedir``.
#  (string value)
#state_path = $pybasedir


[api]
#
# Options under this group are used to define Placement API.

#
# From placement.conf
#

#
# This determines the strategy to use for authentication: keystone or noauth2.
# 'noauth2' is designed for testing only, as it does no actual credential
# checking. 'noauth2' provides administrative credentials only if 'admin' is
# specified as the username.
#  (string value)
# Possible values:
# keystone - <No description provided>
# noauth2 - <No description provided>
#auth_strategy = keystone


[cors]

#
# From oslo.middleware.cors
#

# 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 (list value)
#allowed_origin = <None>

# Indicate that the actual request can include user credentials (boolean value)
#allow_credentials = true

# Indicate which headers are safe to expose to the API. Defaults to HTTP Simple
# Headers. (list value)
#expose_headers =

# Maximum cache age of CORS preflight requests. (integer value)
#max_age = 3600

# Indicate which methods can be used during the actual request. (list value)
#allow_methods = OPTIONS,GET,HEAD,POST,PUT,DELETE,TRACE,PATCH

# Indicate which header field names may be used during the actual request. (list
# value)
#allow_headers =


[keystone_authtoken]

#
# From keystonemiddleware.auth_token
#

# 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. (string value)
# Deprecated group/name - [keystone_authtoken]/auth_uri
#www_authenticate_uri = <None>

# DEPRECATED: 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. (string value)
# 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_uri = <None>

# API version of the Identity API endpoint. (string value)
#auth_version = <None>

# Interface to use for the Identity API endpoint. Valid values are "public",
# "internal" (default) or "admin". (string value)
#interface = internal

# Do not handle authorization requests within the middleware, but delegate the
# authorization decision to downstream WSGI components. (boolean value)
#delay_auth_decision = false

# Request timeout value for communicating with Identity API server. (integer
# value)
#http_connect_timeout = <None>

# How many times are we trying to reconnect when communicating with Identity API
# Server. (integer value)
#http_request_max_retries = 3

# 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. (string value)
#cache = <None>

# Required if identity server requires client certificate (string value)
#certfile = <None>

# Required if identity server requires client certificate (string value)
#keyfile = <None>

# A PEM encoded Certificate Authority to use when verifying HTTPs connections.
# Defaults to system CAs. (string value)
#cafile = <None>

# Verify HTTPS connections. (boolean value)
#insecure = false

# The region in which the identity server can be found. (string value)
#region_name = <None>

# Optionally specify a list of memcached server(s) to use for caching. If left
# undefined, tokens will instead be cached in-process. (list value)
# Deprecated group/name - [keystone_authtoken]/memcache_servers
#memcached_servers = <None>

# 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. (integer value)
#token_cache_time = 300

# (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. (string value)
# Possible values:
# None - <No description provided>
# MAC - <No description provided>
# ENCRYPT - <No description provided>
#memcache_security_strategy = None

# (Optional, mandatory if memcache_security_strategy is defined) This string is
# used for key derivation. (string value)
#memcache_secret_key = <None>

# (Optional) Number of seconds memcached server is considered dead before it is
# tried again. (integer value)
#memcache_pool_dead_retry = 300

# (Optional) Maximum total number of open connections to every memcached server.
# (integer value)
#memcache_pool_maxsize = 10

# (Optional) Socket timeout in seconds for communicating with a memcached
# server. (integer value)
#memcache_pool_socket_timeout = 3

# (Optional) Number of seconds a connection to memcached is held unused in the
# pool before it is closed. (integer value)
#memcache_pool_unused_timeout = 60

# (Optional) Number of seconds that an operation will wait to get a memcached
# client connection from the pool. (integer value)
#memcache_pool_conn_get_timeout = 10

# (Optional) Use the advanced (eventlet safe) memcached client pool. (boolean
# value)
#memcache_use_advanced_pool = 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. (boolean value)
#include_service_catalog = true

# 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. (string
# value)
#enforce_token_bind = permissive

# 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. (list value)
#service_token_roles = service

# 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.
# (boolean value)
#service_token_roles_required = false

# 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. (string value)
#service_type = <None>

# Authentication type to load (string value)
# Deprecated group/name - [keystone_authtoken]/auth_plugin
#auth_type = <None>

# Config Section from which to load plugin specific options (string value)
#auth_section = <None>


[oslo_middleware]

#
# From oslo.middleware.http_proxy_to_wsgi
#

# Whether the application is behind a proxy or not. This determines if the
# middleware should parse the headers or not. (boolean value)
#enable_proxy_headers_parsing = false


[oslo_policy]

#
# From oslo.policy
#

# 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. (boolean value)
#enforce_scope = false

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

# 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. (string value)
#policy_file = policy.json

# Default rule. Enforced when a requested rule is not found. (string value)
#policy_default_rule = default

# 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. (multi
# valued)
#policy_dirs = policy.d

# Content Type to send and receive data for REST based policy check (string
# value)
# Possible values:
# application/x-www-form-urlencoded - <No description provided>
# application/json - <No description provided>
#remote_content_type = application/x-www-form-urlencoded

# server identity verification for REST based policy check (boolean value)
#remote_ssl_verify_server_crt = false

# Absolute path to ca cert file for REST based policy check (string value)
#remote_ssl_ca_crt_file = <None>

# Absolute path to client cert for REST based policy check (string value)
#remote_ssl_client_crt_file = <None>

# Absolute path client key file REST based policy check (string value)
#remote_ssl_client_key_file = <None>


[placement]

#
# From placement.conf
#

#
# 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.
#  (boolean value)
#randomize_allocation_candidates = false

#
# Early API microversions (<1.8) allowed creating allocations and not specifying
# a project or user identifier for the consumer. In cleaning up the data
# modeling, we no longer allow missing project and user information. If an older
# client makes an allocation, we'll use this in place of the information it
# doesn't provide.
#  (string value)
#incomplete_consumer_project_id = 00000000-0000-0000-0000-000000000000

#
# Early API microversions (<1.8) allowed creating allocations and not specifying
# a project or user identifier for the consumer. In cleaning up the data
# modeling, we no longer allow missing project and user information. If an older
# client makes an allocation, we'll use this in place of the information it
# doesn't provide.
#  (string value)
#incomplete_consumer_user_id = 00000000-0000-0000-0000-000000000000

#
# The number of times to retry, server-side, writing allocations when there is
# a resource provider generation conflict. Raising this value may be useful
# when many concurrent allocations to the same resource provider are expected.
#  (integer value)
#allocation_conflict_retry_count = 10


[placement_database]
#
# The *Placement API Database* is a the database used with the placement
# service. If the connection option is not set, the placement service will
# not start.

#
# From placement.conf
#

# The SQLAlchemy connection string to use to connect to the database. (string
# value)
#connection = <None>

# Optional URL parameters to append onto the connection URL at connect time;
# specify as param1=value1&param2=value2&... (string value)
#connection_parameters =

# If True, SQLite uses synchronous mode. (boolean value)
#sqlite_synchronous = true

# The SQLAlchemy connection string to use to connect to the slave database.
# (string value)
#slave_connection = <None>

# 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=
# (string value)
#mysql_sql_mode = TRADITIONAL

# 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. (integer value)
#connection_recycle_time = 3600

# Maximum number of SQL connections to keep open in a pool. Setting a value of 0
# indicates no limit. (integer value)
#max_pool_size = <None>

# Maximum number of database connection retries during startup. Set to -1 to
# specify an infinite retry count. (integer value)
#max_retries = 10

# Interval between retries of opening a SQL connection. (integer value)
#retry_interval = 10

# If set, use this value for max_overflow with SQLAlchemy. (integer value)
#max_overflow = <None>

# Verbosity of SQL debugging information: 0=None, 100=Everything. (integer
# value)
#connection_debug = 0

# Add Python stack traces to SQL as comment strings. (boolean value)
#connection_trace = false

# If set, use this value for pool_timeout with SQLAlchemy. (integer value)
#pool_timeout = <None>

# If True, database schema migrations will be attempted when the web service
# starts. (boolean value)
#sync_on_startup = false


[profiler]

#
# From osprofiler
#

#
# Enable the profiling for all services on this node.
#
# Default value is False (fully disable the profiling feature).
#
# Possible values:
#
# * True: Enables the feature
# * False: Disables the feature. The profiling cannot be started via this
# project
#   operations. If the profiling is triggered by another project, this project
#   part will be empty.
#  (boolean value)
# Deprecated group/name - [profiler]/profiler_enabled
#enabled = false

#
# Enable SQL requests profiling in services.
#
# Default value is False (SQL requests won't be traced).
#
# Possible values:
#
# * True: Enables SQL requests profiling. Each SQL query will be part of the
#   trace and can the be analyzed by how much time was spent for that.
# * False: Disables SQL requests profiling. The spent time is only shown on a
#   higher level of operations. Single SQL queries cannot be analyzed this way.
#  (boolean value)
#trace_sqlalchemy = false

#
# Enable python requests package profiling.
#
# Supported drivers: jaeger+otlp
#
# Default value is False.
#
# Possible values:
#
# * True: Enables requests profiling.
# * False: Disables requests profiling.
#  (boolean value)
#trace_requests = false

#
# Secret key(s) to use for encrypting context data for performance profiling.
#
# This string value should have the following format: <key1>[,<key2>,...<keyn>],
# where each key is some random string. A user who triggers the profiling via
# the REST API has to set one of these keys in the headers of the REST API call
# to include profiling results of this node for this particular project.
#
# Both "enabled" flag and "hmac_keys" config options should be set to enable
# profiling. Also, to generate correct profiling information across all services
# at least one key needs to be consistent between OpenStack projects. This
# ensures it can be used from client side to generate the trace, containing
# information from all possible resources.
#  (string value)
#hmac_keys = SECRET_KEY

#
# Connection string for a notifier backend.
#
# Default value is ``messaging://`` which sets the notifier to oslo_messaging.
#
# Examples of possible values:
#
# * ``messaging://`` - use oslo_messaging driver for sending spans.
# * ``redis://127.0.0.1:6379`` - use redis driver for sending spans.
# * ``mongodb://127.0.0.1:27017`` - use mongodb driver for sending spans.
# * ``elasticsearch://127.0.0.1:9200`` - use elasticsearch driver for sending
#   spans.
# * ``jaeger://127.0.0.1:6831`` - use jaeger tracing as driver for sending
# spans.
#  (string value)
#connection_string = messaging://

#
# Document type for notification indexing in elasticsearch.
#  (string value)
#es_doc_type = notification

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

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

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

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

#
# Enable filter traces that contain error/exception to a separated place.
#
# Default value is set to False.
#
# Possible values:
#
# * True: Enable filter traces that contain error/exception.
# * False: Disable the filter.
#  (boolean value)
#filter_error_trace = false


[profiler_jaeger]

#
# From osprofiler
#

#
# Set service name prefix to Jaeger service name.
#  (string value)
#service_name_prefix = <None>

#
# Set process tracer tags.
#  (dict value)
#process_tags =


[profiler_otlp]

#
# From osprofiler
#

#
# Set service name prefix to OTLP exporters.
#  (string value)
#service_name_prefix = <None>