glance-api.conf

DEFAULT

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.

Warning

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

Reason:

Windows support is no longer maintained.

log_rotate_interval
Type:

integer

Default:

1

The amount of time before the log files are rotated. This option is ignored unless log_rotation_type is set to “interval”.

log_rotate_interval_type
Type:

string

Default:

days

Valid Values:

Seconds, Minutes, Hours, Days, Weekday, Midnight

Rotation interval type. The time of the last file change (or the time when the service was started) is used when scheduling the next rotation.

max_logfile_count
Type:

integer

Default:

30

Maximum number of rotated log files.

max_logfile_size_mb
Type:

integer

Default:

200

Log file maximum size in MB. This option is ignored if “log_rotation_type” is not set to “size”.

log_rotation_type
Type:

string

Default:

none

Valid Values:

interval, size, none

Log rotation type.

Possible values

interval

Rotate logs at predefined time intervals.

size

Rotate logs once they reach a predefined size.

none

Do not rotate log files.

logging_context_format_string
Type:

string

Default:

%(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [%(global_request_id)s %(request_id)s %(user_identity)s] %(instance)s%(message)s

Format string to use for log messages with context. Used by oslo_log.formatters.ContextFormatter

logging_default_format_string
Type:

string

Default:

%(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [-] %(instance)s%(message)s

Format string to use for log messages when context is undefined. Used by oslo_log.formatters.ContextFormatter

logging_debug_format_suffix
Type:

string

Default:

%(funcName)s %(pathname)s:%(lineno)d

Additional data to append to log message when logging level for the message is DEBUG. Used by oslo_log.formatters.ContextFormatter

logging_exception_prefix
Type:

string

Default:

%(asctime)s.%(msecs)03d %(process)d ERROR %(name)s %(instance)s

Prefix each line of exception output with this format. Used by oslo_log.formatters.ContextFormatter

logging_user_identity_format
Type:

string

Default:

%(user)s %(project)s %(domain)s %(system_scope)s %(user_domain)s %(project_domain)s

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

default_log_levels
Type:

list

Default:

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

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

publish_errors
Type:

boolean

Default:

False

Enables or disables publication of error events.

instance_format
Type:

string

Default:

"[instance: %(uuid)s] "

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

instance_uuid_format
Type:

string

Default:

"[instance: %(uuid)s] "

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

rate_limit_interval
Type:

integer

Default:

0

Interval, number of seconds, of log rate limiting.

rate_limit_burst
Type:

integer

Default:

0

Maximum number of logged messages per rate_limit_interval.

rate_limit_except_level
Type:

string

Default:

CRITICAL

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

fatal_deprecations
Type:

boolean

Default:

False

Enables or disables fatal status of deprecations.

allow_anonymous_access
Type:

boolean

Default:

False

Allow limited access to unauthenticated users.

Assign a boolean to determine API access for unauthenticated users. When set to False, the API cannot be accessed by unauthenticated users. When set to True, unauthenticated users can access the API with read-only privileges. This however only applies when using ContextMiddleware.

Possible values:

  • True

  • False

Related options:

  • None

max_request_id_length
Type:

integer

Default:

64

Minimum Value:

0

Limit the request ID length.

Provide an integer value to limit the length of the request ID to the specified length. The default value is 64. Users can change this to any ineteger value between 0 and 16384 however keeping in mind that a larger value may flood the logs.

Possible values:

  • Integer value between 0 and 16384

Related options:

  • None

public_endpoint
Type:

string

Default:

<None>

Public url endpoint to use for Glance versions response.

This is the public url endpoint that will appear in the Glance “versions” response. If no value is specified, the endpoint that is displayed in the version’s response is that of the host running the API service. Change the endpoint to represent the proxy URL if the API service is running behind a proxy. If the service is running behind a load balancer, add the load balancer’s URL for this value.

Possible values:

  • None

  • Proxy URL

  • Load balancer URL

Related options:

  • None

allow_additional_image_properties
Type:

boolean

Default:

True

Allow users to add additional/custom properties to images.

Glance defines a standard set of properties (in its schema) that appear on every image. These properties are also known as base properties. In addition to these properties, Glance allows users to add custom properties to images. These are known as additional properties.

By default, this configuration option is set to True and users are allowed to add additional properties. The number of additional properties that can be added to an image can be controlled via image_property_quota configuration option.

Possible values:

  • True

  • False

Related options:

  • image_property_quota

Warning

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

Reason:

This option is redundant. Control custom image property usage via the ‘image_property_quota’ configuration option. This option is scheduled to be removed during the Victoria development cycle.

hashing_algorithm
Type:

string

Default:

sha512

Secure hashing algorithm used for computing the ‘os_hash_value’ property.

This option configures the Glance “multihash”, which consists of two image properties: the ‘os_hash_algo’ and the ‘os_hash_value’. The ‘os_hash_algo’ will be populated by the value of this configuration option, and the ‘os_hash_value’ will be populated by the hexdigest computed when the algorithm is applied to the uploaded or imported image data.

The value must be a valid secure hash algorithm name recognized by the python ‘hashlib’ library. You can determine what these are by examining the ‘hashlib.algorithms_available’ data member of the version of the library being used in your Glance installation. For interoperability purposes, however, we recommend that you use the set of secure hash names supplied by the ‘hashlib.algorithms_guaranteed’ data member because those algorithms are guaranteed to be supported by the ‘hashlib’ library on all platforms. Thus, any image consumer using ‘hashlib’ locally should be able to verify the ‘os_hash_value’ of the image.

The default value of ‘sha512’ is a performant secure hash algorithm.

If this option is misconfigured, any attempts to store image data will fail. For that reason, we recommend using the default value.

Possible values:

  • Any secure hash algorithm name recognized by the Python ‘hashlib’ library

Related options:

  • None

image_member_quota
Type:

integer

Default:

128

Maximum number of image members per image.

This limits the maximum of users an image can be shared with. Any negative value is interpreted as unlimited.

Related options:

  • None

image_property_quota
Type:

integer

Default:

128

Maximum number of properties allowed on an image.

This enforces an upper limit on the number of additional properties an image can have. Any negative value is interpreted as unlimited.

NOTE: This won’t have any impact if additional properties are disabled. Please refer to allow_additional_image_properties.

Related options:

  • allow_additional_image_properties

image_tag_quota
Type:

integer

Default:

128

Maximum number of tags allowed on an image.

Any negative value is interpreted as unlimited.

Related options:

  • None

image_location_quota
Type:

integer

Default:

10

Maximum number of locations allowed on an image.

Any negative value is interpreted as unlimited.

Related options:

  • None

limit_param_default
Type:

integer

Default:

25

Minimum Value:

1

The default number of results to return for a request.

Responses to certain API requests, like list images, may return multiple items. The number of results returned can be explicitly controlled by specifying the limit parameter in the API request. However, if a limit parameter is not specified, this configuration value will be used as the default number of results to be returned for any API request.

NOTES:

  • The value of this configuration option may not be greater than the value specified by api_limit_max.

  • Setting this to a very large value may slow down database queries and increase response times. Setting this to a very low value may result in poor user experience.

Possible values:

  • Any positive integer

Related options:

  • api_limit_max

api_limit_max
Type:

integer

Default:

1000

Minimum Value:

1

Maximum number of results that could be returned by a request.

As described in the help text of limit_param_default, some requests may return multiple results. The number of results to be returned are governed either by the limit parameter in the request or the limit_param_default configuration option. The value in either case, can’t be greater than the absolute maximum defined by this configuration option. Anything greater than this value is trimmed down to the maximum value defined here.

NOTE: Setting this to a very large value may slow down database

queries and increase response times. Setting this to a very low value may result in poor user experience.

Possible values:

  • Any positive integer

Related options:

  • limit_param_default

show_image_direct_url
Type:

boolean

Default:

False

Show direct image location when returning an image.

This configuration option indicates whether to show the direct image location when returning image details to the user. The direct image location is where the image data is stored in backend storage. This image location is shown under the image property direct_url.

When multiple image locations exist for an image, the best location is displayed based on the location strategy indicated by the configuration option location_strategy.

NOTES:

  • Revealing image locations can present a GRAVE SECURITY RISK as image locations can sometimes include credentials. Hence, this is set to False by default. Set this to True with EXTREME CAUTION and ONLY IF you know what you are doing!

  • If an operator wishes to avoid showing any image location(s) to the user, then both this option and show_multiple_locations MUST be set to False.

Possible values:

  • True

  • False

Related options:

  • show_multiple_locations

  • location_strategy

show_multiple_locations
Type:

boolean

Default:

False

Show all image locations when returning an image.

This configuration option indicates whether to show all the image locations when returning image details to the user. When multiple image locations exist for an image, the locations are ordered based on the location strategy indicated by the configuration opt location_strategy. The image locations are shown under the image property locations.

NOTES:

  • Revealing image locations can present a GRAVE SECURITY RISK as image locations can sometimes include credentials. Hence, this is set to False by default. Set this to True with EXTREME CAUTION and ONLY IF you know what you are doing!

  • See https://wiki.openstack.org/wiki/OSSN/OSSN-0065 for more information.

  • If an operator wishes to avoid showing any image location(s) to the user, then both this option and show_image_direct_url MUST be set to False.

Possible values:

  • True

  • False

Related options:

  • show_image_direct_url

  • location_strategy

Warning

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

Reason:

Use of this option, deprecated since Newton, is a security risk and will be removed once we figure out a way to satisfy those use cases that currently require it. An earlier announcement that the same functionality can be achieved with greater granularity by using policies is incorrect. You cannot work around this option via policy configuration at the present time, though that is the direction we believe the fix will take. Please keep an eye on the Glance release notes to stay up to date on progress in addressing this issue.

image_size_cap
Type:

integer

Default:

1099511627776

Minimum Value:

1

Maximum Value:

9223372036854775808

Maximum size of image a user can upload in bytes.

An image upload greater than the size mentioned here would result in an image creation failure. This configuration option defaults to 1099511627776 bytes (1 TiB).

NOTES:

  • This value should only be increased after careful consideration and must be set less than or equal to 8 EiB (9223372036854775808).

  • This value must be set with careful consideration of the backend storage capacity. Setting this to a very low value may result in a large number of image failures. And, setting this to a very large value may result in faster consumption of storage. Hence, this must be set according to the nature of images created and storage capacity available.

Possible values:

  • Any positive number less than or equal to 9223372036854775808

user_storage_quota
Type:

string

Default:

0

Maximum amount of image storage per tenant.

This enforces an upper limit on the cumulative storage consumed by all images of a tenant across all stores. This is a per-tenant limit.

The default unit for this configuration option is Bytes. However, storage units can be specified using case-sensitive literals B, KB, MB, GB and TB representing Bytes, KiloBytes, MegaBytes, GigaBytes and TeraBytes respectively. Note that there should not be any space between the value and unit. Value 0 signifies no quota enforcement. Negative values are invalid and result in errors.

This has no effect if use_keystone_limits is enabled.

Possible values:

  • A string that is a valid concatenation of a non-negative integer representing the storage value and an optional string literal representing storage units as mentioned above.

Related options:

  • use_keystone_limits

use_keystone_limits
Type:

boolean

Default:

False

Utilize per-tenant resource limits registered in Keystone.

Enabling this feature will cause Glance to retrieve limits set in keystone for resource consumption and enforce them against API users. Before turning this on, the limits need to be registered in Keystone or all quotas will be considered to be zero, and thus reject all new resource requests.

These per-tenant resource limits are independent from the static global ones configured in this config file. If this is enabled, the relevant static global limits will be ignored.

pydev_worker_debug_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.

Host address of the pydev server.

Provide a string value representing the hostname or IP of the pydev server to use for debugging. The pydev server listens for debug connections on this address, facilitating remote debugging in Glance.

Possible values:

  • Valid hostname

  • Valid IP address

Related options:

  • None

pydev_worker_debug_port
Type:

port number

Default:

5678

Minimum Value:

0

Maximum Value:

65535

Port number that the pydev server will listen on.

Provide a port number to bind the pydev server to. The pydev process accepts debug connections on this port and facilitates remote debugging in Glance.

Possible values:

  • A valid port number

Related options:

  • None

metadata_encryption_key
Type:

string

Default:

<None>

AES key for encrypting store location metadata.

Provide a string value representing the AES cipher to use for encrypting Glance store metadata.

NOTE: The AES key to use must be set to a random string of length 16, 24 or 32 bytes.

Possible values:

  • String value representing a valid AES key

Related options:

  • None

digest_algorithm
Type:

string

Default:

sha256

Digest algorithm to use for digital signature.

Provide a string value representing the digest algorithm to use for generating digital signatures. By default, sha256 is used.

To get a list of the available algorithms supported by the version of OpenSSL on your platform, run the command: openssl list-message-digest-algorithms. Examples are ‘sha1’, ‘sha256’, and ‘sha512’.

NOTE: digest_algorithm is not related to Glance’s image signing and verification. It is only used to sign the universally unique identifier (UUID) as a part of the certificate file and key file validation.

Possible values:

  • An OpenSSL message digest algorithm identifier

Relation options:

  • None

node_staging_uri
Type:

string

Default:

file:///tmp/staging/

The URL provides location where the temporary data will be stored

This option is for Glance internal use only. Glance will save the image data uploaded by the user to ‘staging’ endpoint during the image import process.

This option does not change the ‘staging’ API endpoint by any means.

NOTE: It is discouraged to use same path as [task]/work_dir

NOTE: ‘file://<absolute-directory-path>’ is the only option api_image_import flow will support for now.

NOTE: The staging path must be on shared filesystem available to all Glance API nodes.

Possible values:

  • String starting with ‘file://’ followed by absolute FS path

Related options:

  • [task]/work_dir

enabled_import_methods
Type:

list

Default:

['glance-direct', 'web-download', 'copy-image']

List of enabled Image Import Methods

‘glance-direct’, ‘copy-image’ and ‘web-download’ are enabled by default. ‘glance-download’ is available, but requires federated deployments.

Related options:

  • [DEFAULT]/node_staging_uri

worker_self_reference_url
Type:

string

Default:

<None>

The URL to this worker.

If this is set, other glance workers will know how to contact this one directly if needed. For image import, a single worker stages the image and other workers need to be able to proxy the import request to the right one.

If unset, this will be considered to be public_endpoint, which normally would be set to the same value on all workers, effectively disabling the proxying behavior.

Possible values:

  • A URL by which this worker is reachable from other workers

Related options:

  • public_endpoint

location_strategy
Type:

string

Default:

location_order

Valid Values:

location_order, store_type

Strategy to determine the preference order of image locations.

This configuration option indicates the strategy to determine the order in which an image’s locations must be accessed to serve the image’s data. Glance then retrieves the image data from the first responsive active location it finds in this list.

This option takes one of two possible values location_order and store_type. The default value is location_order, which suggests that image data be served by using locations in the order they are stored in Glance. The store_type value sets the image location preference based on the order in which the storage backends are listed as a comma separated list for the configuration option store_type_preference.

Possible values:

  • location_order

  • store_type

Related options:

  • store_type_preference

Warning

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

Reason:

In Bobcat, a new weighing mechanism has been introduced, which makes the location strategy obsolete. This option is scheduled to be removed during the Dalmatian development cycle.

property_protection_file
Type:

string

Default:

<None>

The location of the property protection file.

Provide a valid path to the property protection file which contains the rules for property protections and the roles/policies associated with them.

A property protection file, when set, restricts the Glance image properties to be created, read, updated and/or deleted by a specific set of users that are identified by either roles or policies. If this configuration option is not set, by default, property protections won’t be enforced. If a value is specified and the file is not found, the glance-api service will fail to start. More information on property protections can be found at: https://docs.openstack.org/glance/latest/admin/property-protections.html

Possible values:

  • Empty string

  • Valid path to the property protection configuration file

Related options:

  • property_protection_rule_format

property_protection_rule_format
Type:

string

Default:

roles

Valid Values:

roles, policies

Rule format for property protection.

Provide the desired way to set property protection on Glance image properties. The two permissible values are roles and policies. The default value is roles.

If the value is roles, the property protection file must contain a comma separated list of user roles indicating permissions for each of the CRUD operations on each property being protected. If set to policies, a policy defined in policy.yaml is used to express property protections for each of the CRUD operations. Examples of how property protections are enforced based on roles or policies can be found at: https://docs.openstack.org/glance/latest/admin/property-protections.html#examples

Possible values:

  • roles

  • policies

Related options:

  • property_protection_file

bind_host
Type:

host address

Default:

0.0.0.0

IP address to bind the glance servers to.

Provide an IP address to bind the glance server to. The default value is 0.0.0.0.

Edit this option to enable the server to listen on one particular IP address on the network card. This facilitates selection of a particular network interface for the server.

Possible values:

  • A valid IPv4 address

  • A valid IPv6 address

Related options:

  • None

bind_port
Type:

port number

Default:

<None>

Minimum Value:

0

Maximum Value:

65535

Port number on which the server will listen.

Provide a valid port number to bind the server’s socket to. This port is then set to identify processes and forward network messages that arrive at the server. The default bind_port value for the API server is 9292 and for the registry server is 9191.

Possible values:

  • A valid port number (0 to 65535)

Related options:

  • None

workers
Type:

integer

Default:

<None>

Minimum Value:

0

Number of Glance worker processes to start.

Provide a non-negative integer value to set the number of child process workers to service requests. By default, the number of CPUs available is set as the value for workers limited to 8. For example if the processor count is 6, 6 workers will be used, if the processor count is 24 only 8 workers will be used. The limit will only apply to the default value, if 24 workers is configured, 24 is used.

Each worker process is made to listen on the port set in the configuration file and contains a greenthread pool of size 1000.

NOTE: Setting the number of workers to zero, triggers the creation of a single API process with a greenthread pool of size 1000.

Possible values:

  • 0

  • Positive integer value (typically equal to the number of CPUs)

Related options:

  • None

max_header_line
Type:

integer

Default:

16384

Minimum Value:

0

Maximum line size of message headers.

Provide an integer value representing a length to limit the size of message headers. The default value is 16384.

NOTE: max_header_line may need to be increased when using large tokens (typically those generated by the Keystone v3 API with big service catalogs). However, it is to be kept in mind that larger values for max_header_line would flood the logs.

Setting max_header_line to 0 sets no limit for the line size of message headers.

Possible values:

  • 0

  • Positive integer

Related options:

  • None

http_keepalive
Type:

boolean

Default:

True

Set keep alive option for HTTP over TCP.

Provide a boolean value to determine sending of keep alive packets. If set to False, the server returns the header “Connection: close”. If set to True, the server returns a “Connection: Keep-Alive” in its responses. This enables retention of the same TCP connection for HTTP conversations instead of opening a new one with each new request.

This option must be set to False if the client socket connection needs to be closed explicitly after the response is received and read successfully by the client.

Possible values:

  • True

  • False

Related options:

  • None

client_socket_timeout
Type:

integer

Default:

900

Minimum Value:

0

Timeout for client connections’ socket operations.

Provide a valid integer value representing time in seconds to set the period of wait before an incoming connection can be closed. The default value is 900 seconds.

The value zero implies wait forever.

Possible values:

  • Zero

  • Positive integer

Related options:

  • None

backlog
Type:

integer

Default:

4096

Minimum Value:

1

Set the number of incoming connection requests.

Provide a positive integer value to limit the number of requests in the backlog queue. The default queue size is 4096.

An incoming connection to a TCP listener socket is queued before a connection can be established with the server. Setting the backlog for a TCP socket ensures a limited queue size for incoming traffic.

Possible values:

  • Positive integer

Related options:

  • None

tcp_keepidle
Type:

integer

Default:

600

Minimum Value:

1

Set the wait time before a connection recheck.

Provide a positive integer value representing time in seconds which is set as the idle wait time before a TCP keep alive packet can be sent to the host. The default value is 600 seconds.

Setting tcp_keepidle helps verify at regular intervals that a connection is intact and prevents frequent TCP connection reestablishment.

Possible values:

  • Positive integer value representing time in seconds

Related options:

  • None

enabled_backends
Type:

dict

Default:

<None>

Key:Value pair of store identifier and store type. In case of multiple backends should be separated using comma.

pipe_handle
Type:

string

Default:

<None>

This argument is used internally on Windows. Glance passes a pipe handle to child processes, which is then used for inter-process communication.

image_cache_sqlite_db
Type:

string

Default:

cache.db

The relative path to sqlite file database that will be used for image cache management.

This is a relative path to the sqlite file database that tracks the age and usage statistics of image cache. The path is relative to image cache base directory, specified by the configuration option image_cache_dir.

This is a lightweight database with just one table.

Possible values:

  • A valid relative path to sqlite file database

Related options:

  • image_cache_dir

Warning

This option is deprecated for removal since Caracal (2024.1). Its value may be silently ignored in the future.

Reason:

As centralized database will now be used for image cache management, the use of sqlite database and driver will be dropped from ‘E’ (2025.1) development cycle.

image_cache_driver
Type:

string

Default:

centralized_db

Valid Values:

centralized_db, sqlite, xattr

The driver to use for image cache management.

This configuration option provides the flexibility to choose between the different image-cache drivers available. An image-cache driver is responsible for providing the essential functions of image-cache like write images to/read images from cache, track age and usage of cached images, provide a list of cached images, fetch size of the cache, queue images for caching and clean up the cache, etc.

The essential functions of a driver are defined in the base class glance.image_cache.drivers.base.Driver. All image-cache drivers (existing and prospective) must implement this interface. Currently available drivers are sqlite and xattr. These drivers primarily differ in the way they store the information about cached images:

  • The centralized_db driver uses a central database (which will be common for all glance nodes) to track the usage of cached images.

  • The sqlite (deprecated) driver uses a sqlite database (which sits on every glance node locally) to track the usage of cached images.

  • The xattr driver uses the extended attributes of files to store this information. It also requires a filesystem that sets atime on the files when accessed.

Deprecation warning:

  • As centralized database will now be used for image cache management, the use of sqlite database and driver will be dropped from ‘E’ (2025.1) development cycle.

Possible values:

  • centralized_db

  • sqlite

  • xattr

Related options:

  • None

image_cache_max_size
Type:

integer

Default:

10737418240

Minimum Value:

0

The upper limit on cache size, in bytes, after which the cache-pruner cleans up the image cache.

NOTE: This is just a threshold for cache-pruner to act upon. It is NOT a hard limit beyond which the image cache would never grow. In fact, depending on how often the cache-pruner runs and how quickly the cache fills, the image cache can far exceed the size specified here very easily. Hence, care must be taken to appropriately schedule the cache-pruner and in setting this limit.

Glance caches an image when it is downloaded. Consequently, the size of the image cache grows over time as the number of downloads increases. To keep the cache size from becoming unmanageable, it is recommended to run the cache-pruner as a periodic task. When the cache pruner is kicked off, it compares the current size of image cache and triggers a cleanup if the image cache grew beyond the size specified here. After the cleanup, the size of cache is less than or equal to size specified here.

Possible values:

  • Any non-negative integer

Related options:

  • None

image_cache_stall_time
Type:

integer

Default:

86400

Minimum Value:

0

The amount of time, in seconds, an incomplete image remains in the cache.

Incomplete images are images for which download is in progress. Please see the description of configuration option image_cache_dir for more detail. Sometimes, due to various reasons, it is possible the download may hang and the incompletely downloaded image remains in the incomplete directory. This configuration option sets a time limit on how long the incomplete images should remain in the incomplete directory before they are cleaned up. Once an incomplete image spends more time than is specified here, it’ll be removed by cache-cleaner on its next run.

It is recommended to run cache-cleaner as a periodic task on the Glance API nodes to keep the incomplete images from occupying disk space.

Possible values:

  • Any non-negative integer

Related options:

  • None

image_cache_dir
Type:

string

Default:

<None>

Base directory for image cache.

This is the location where image data is cached and served out of. All cached images are stored directly under this directory. This directory also contains three subdirectories, namely, incomplete, invalid and queue.

The incomplete subdirectory is the staging area for downloading images. An image is first downloaded to this directory. When the image download is successful it is moved to the base directory. However, if the download fails, the partially downloaded image file is moved to the invalid subdirectory.

The queue``subdirectory is used for queuing images for download. This is used primarily by the cache-prefetcher, which can be scheduled as a periodic task like cache-pruner and cache-cleaner, to cache images ahead of their usage. Upon receiving the request to cache an image, Glance touches a file in the ``queue directory with the image id as the file name. The cache-prefetcher, when running, polls for the files in queue directory and starts downloading them in the order they were created. When the download is successful, the zero-sized file is deleted from the queue directory. If the download fails, the zero-sized file remains and it’ll be retried the next time cache-prefetcher runs.

Possible values:

  • A valid path

Related options:

  • image_cache_sqlite_db

default_publisher_id
Type:

string

Default:

image.localhost

Default publisher_id for outgoing Glance notifications.

This is the value that the notification driver will use to identify messages for events originating from the Glance service. Typically, this is the hostname of the instance that generated the message.

Possible values:

  • Any reasonable instance identifier, for example: image.host1

Related options:

  • None

disabled_notifications
Type:

list

Default:

[]

List of notifications to be disabled.

Specify a list of notifications that should not be emitted. A notification can be given either as a notification type to disable a single event notification, or as a notification group prefix to disable all event notifications within a group.

Possible values:

A comma-separated list of individual notification types or notification groups to be disabled. Currently supported groups:

  • image

  • image.member

  • task

  • metadef_namespace

  • metadef_object

  • metadef_property

  • metadef_resource_type

  • metadef_tag

For a complete listing and description of each event refer to: https://docs.openstack.org/glance/latest/admin/notifications.html

The values must be specified as: <group_name>.<event_name> For example: image.create,task.success,metadef_tag

Related options:

  • None

scrub_time
Type:

integer

Default:

0

Minimum Value:

0

The amount of time, in seconds, to delay image scrubbing.

When delayed delete is turned on, an image is put into pending_delete state upon deletion until the scrubber deletes its image data. Typically, soon after the image is put into pending_delete state, it is available for scrubbing. However, scrubbing can be delayed until a later point using this configuration option. This option denotes the time period an image spends in pending_delete state before it is available for scrubbing.

It is important to realize that this has storage implications. The larger the scrub_time, the longer the time to reclaim backend storage from deleted images.

Possible values:

  • Any non-negative integer

Related options:

  • delayed_delete

Warning

This option is deprecated for removal since 2024.1 (Caracal). Its value may be silently ignored in the future.

Reason:

The entire glance scrubber, including this option, is scheduled to be removed during the 2024.2 (Dalmatian) development cycle.

scrub_pool_size
Type:

integer

Default:

1

Minimum Value:

1

The size of thread pool to be used for scrubbing images.

When there are a large number of images to scrub, it is beneficial to scrub images in parallel so that the scrub queue stays in control and the backend storage is reclaimed in a timely fashion. This configuration option denotes the maximum number of images to be scrubbed in parallel. The default value is one, which signifies serial scrubbing. Any value above one indicates parallel scrubbing.

Possible values:

  • Any non-zero positive integer

Related options:

  • delayed_delete

Warning

This option is deprecated for removal since 2024.1 (Caracal). Its value may be silently ignored in the future.

Reason:

The entire glance scrubber, including this option, is scheduled to be removed during the 2024.2 (Dalmatian) development cycle.

delayed_delete
Type:

boolean

Default:

False

Turn on/off delayed delete.

Typically when an image is deleted, the glance-api service puts the image into deleted state and deletes its data at the same time. Delayed delete is a feature in Glance that delays the actual deletion of image data until a later point in time (as determined by the configuration option scrub_time). When delayed delete is turned on, the glance-api service puts the image into pending_delete state upon deletion and leaves the image data in the storage backend for the image scrubber to delete at a later time. The image scrubber will move the image into deleted state upon successful deletion of image data.

NOTE: When delayed delete is turned on, image scrubber MUST be running as a periodic task to prevent the backend storage from filling up with undesired usage.

Possible values:

  • True

  • False

Related options:

  • scrub_time

  • wakeup_time

  • scrub_pool_size

Warning

This option is deprecated for removal since 2024.1 (Caracal). Its value may be silently ignored in the future.

Reason:

The entire glance scrubber, including this option, is scheduled to be removed during the 2024.2 (Dalmatian) development cycle.

rpc_conn_pool_size
Type:

integer

Default:

30

Minimum Value:

1

Size of RPC connection pool.

Deprecated Variations

Group

Name

DEFAULT

rpc_conn_pool_size
conn_pool_min_size
Type:

integer

Default:

2

The pool size limit for connections expiration policy

conn_pool_ttl
Type:

integer

Default:

1200

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

executor_thread_pool_size
Type:

integer

Default:

64

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

Deprecated Variations

Group

Name

DEFAULT

rpc_thread_pool_size
rpc_response_timeout
Type:

integer

Default:

60

Seconds to wait for a response from a call.

transport_url
Type:

string

Default:

rabbit://

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

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

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

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

control_exchange
Type:

string

Default:

openstack

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

rpc_ping_enabled
Type:

boolean

Default:

False

Add an endpoint to answer to ping calls. Endpoint is named oslo_rpc_server_ping

barbican

barbican_endpoint
Type:

string

Default:

<None>

Use this endpoint to connect to Barbican, for example: “http://localhost:9311/”

barbican_api_version
Type:

string

Default:

<None>

Version of the Barbican API, for example: “v1”

auth_endpoint
Type:

string

Default:

http://localhost/identity/v3

Use this endpoint to connect to Keystone

Deprecated Variations

Group

Name

key_manager

auth_url
retry_delay
Type:

integer

Default:

1

Number of seconds to wait before retrying poll for key creation completion

number_of_retries
Type:

integer

Default:

60

Number of times to retry poll for key creation completion

verify_ssl
Type:

boolean

Default:

True

Specifies if insecure TLS (https) requests. If False, the server’s certificate will not be validated, if True, we can set the verify_ssl_path config meanwhile.

verify_ssl_path
Type:

string

Default:

<None>

A path to a bundle or CA certs to check against, or None for requests to attempt to locate and use certificates which verify_ssh is True. If verify_ssl is False, this is ignored.

barbican_endpoint_type
Type:

string

Default:

public

Valid Values:

public, internal, admin

Specifies the type of endpoint. Allowed values are: public, private, and admin

barbican_region_name
Type:

string

Default:

<None>

Specifies the region of the chosen endpoint.

send_service_user_token
Type:

boolean

Default:

False

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

Nova often reuses the user token provided to the nova-api to talk to other REST APIs, such as Cinder, Glance and Neutron. It is possible that while the user token was valid when the request was made to Nova, the token may expire before it reaches the other service. To avoid any failures, and to make it clear it is Nova calling the service on the user’s behalf, we include a service token along with the user token. Should the user’s token have expired, a valid service token ensures the REST API request will still be accepted by the keystone middleware.

barbican_service_user

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

barbican_service_user

auth_plugin
auth_section
Type:

unknown type

Default:

<None>

Config Section from which to load plugin specific options

cors

allowed_origin
Type:

list

Default:

<None>

Indicate whether this resource may be shared with the domain received in the requests “origin” header. Format: “<protocol>://<host>[:<port>]”, no trailing slash. Example: https://horizon.example.com

allow_credentials
Type:

boolean

Default:

True

Indicate that the actual request can include user credentials

expose_headers
Type:

list

Default:

['X-Image-Meta-Checksum', 'X-Auth-Token', 'X-Subject-Token', 'X-Service-Token', 'X-OpenStack-Request-ID']

Indicate which headers are safe to expose to the API. Defaults to HTTP Simple Headers.

max_age
Type:

integer

Default:

3600

Maximum cache age of CORS preflight requests.

allow_methods
Type:

list

Default:

['GET', 'PUT', 'POST', 'DELETE', 'PATCH']

Indicate which methods can be used during the actual request.

allow_headers
Type:

list

Default:

['Content-MD5', 'X-Image-Meta-Checksum', 'X-Storage-Token', 'Accept-Encoding', 'X-Auth-Token', 'X-Identity-Status', 'X-Roles', 'X-Service-Catalog', 'X-User-Id', 'X-Tenant-Id', 'X-OpenStack-Request-ID']

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

database

sqlite_synchronous
Type:

boolean

Default:

True

If True, SQLite uses synchronous mode.

backend
Type:

string

Default:

sqlalchemy

The back end to use for the database.

connection
Type:

string

Default:

<None>

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

slave_connection
Type:

string

Default:

<None>

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

mysql_sql_mode
Type:

string

Default:

TRADITIONAL

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

mysql_wsrep_sync_wait
Type:

integer

Default:

<None>

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

connection_recycle_time
Type:

integer

Default:

3600

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

max_pool_size
Type:

integer

Default:

5

Maximum number of SQL connections to keep open in a pool. Setting a value of 0 indicates no limit.

max_retries
Type:

integer

Default:

10

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

retry_interval
Type:

integer

Default:

10

Interval between retries of opening a SQL connection.

max_overflow
Type:

integer

Default:

50

If set, use this value for max_overflow with SQLAlchemy.

connection_debug
Type:

integer

Default:

0

Minimum Value:

0

Maximum Value:

100

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

connection_trace
Type:

boolean

Default:

False

Add Python stack traces to SQL as comment strings.

pool_timeout
Type:

integer

Default:

<None>

If set, use this value for pool_timeout with SQLAlchemy.

use_db_reconnect
Type:

boolean

Default:

False

Enable the experimental use of database reconnect on connection lost.

db_retry_interval
Type:

integer

Default:

1

Seconds between retries of a database transaction.

db_inc_retry_interval
Type:

boolean

Default:

True

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

db_max_retry_interval
Type:

integer

Default:

10

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

db_max_retries
Type:

integer

Default:

20

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

connection_parameters
Type:

string

Default:

''

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

file

filesystem_store_datadir
Type:

string

Default:

/var/lib/glance/images

Directory to which the filesystem backend store writes images.

Upon start up, Glance creates the directory if it doesn’t already exist and verifies write access to the user under which glance-api runs. If the write access isn’t available, a BadStoreConfiguration exception is raised and the filesystem store may not be available for adding new images.

NOTE: This directory is used only when filesystem store is used as a storage backend. Either filesystem_store_datadir or filesystem_store_datadirs option must be specified in glance-api.conf. If both options are specified, a BadStoreConfiguration will be raised and the filesystem store may not be available for adding new images.

Possible values:

  • A valid path to a directory

Related options:

  • filesystem_store_datadirs

  • filesystem_store_file_perm

filesystem_store_datadirs
Type:

multi-valued

Default:

''

List of directories and their priorities to which the filesystem backend store writes images.

The filesystem store can be configured to store images in multiple directories as opposed to using a single directory specified by the filesystem_store_datadir configuration option. When using multiple directories, each directory can be given an optional priority to specify the preference order in which they should be used. Priority is an integer that is concatenated to the directory path with a colon where a higher value indicates higher priority. When two directories have the same priority, the directory with most free space is used. When no priority is specified, it defaults to zero.

More information on configuring filesystem store with multiple store directories can be found at https://docs.openstack.org/glance/latest/configuration/configuring.html

NOTE: This directory is used only when filesystem store is used as a storage backend. Either filesystem_store_datadir or filesystem_store_datadirs option must be specified in glance-api.conf. If both options are specified, a BadStoreConfiguration will be raised and the filesystem store may not be available for adding new images.

Possible values:
  • List of strings of the following form:

    • <a valid directory path>:<optional integer priority>

Related options:

  • filesystem_store_datadir

  • filesystem_store_file_perm

filesystem_store_metadata_file
Type:

string

Default:

<None>

Filesystem store metadata file.

The path to a file which contains the metadata to be returned with any location associated with the filesystem store. Once this option is set, it is used for new images created afterward only - previously existing images are not affected.

The file must contain a valid JSON object. The object should contain the keys id and mountpoint. The value for both keys should be a string.

Possible values:

  • A valid path to the store metadata file

Related options:

  • None

filesystem_store_file_perm
Type:

integer

Default:

0

File access permissions for the image files.

Set the intended file access permissions for image data. This provides a way to enable other services, e.g. Nova, to consume images directly from the filesystem store. The users running the services that are intended to be given access to could be made a member of the group that owns the files created. Assigning a value less then or equal to zero for this configuration option signifies that no changes be made to the default permissions. This value will be decoded as an octal digit.

For more information, please refer the documentation at https://docs.openstack.org/glance/latest/configuration/configuring.html

Possible values:

  • A valid file access permission

  • Zero

  • Any negative integer

Related options:

  • None

filesystem_store_chunk_size
Type:

integer

Default:

65536

Minimum Value:

1

Chunk size, in bytes.

The chunk size used when reading or writing image files. Raising this value may improve the throughput but it may also slightly increase the memory usage when handling a large number of requests.

Possible Values:

  • Any positive integer value

Related options:

  • None

filesystem_thin_provisioning
Type:

boolean

Default:

False

Enable or not thin provisioning in this backend.

This configuration option enable the feature of not really write null byte sequences on the filesystem, the holes who can appear will automatically be interpreted by the filesystem as null bytes, and do not really consume your storage. Enabling this feature will also speed up image upload and save network traffic in addition to save space in the backend, as null bytes sequences are not sent over the network.

Possible Values:

  • True

  • False

Related options:

  • None

glance.store.http.store

https_ca_certificates_file
Type:

string

Default:

<None>

Path to the CA bundle file.

This configuration option enables the operator to use a custom Certificate Authority file to verify the remote server certificate. If this option is set, the https_insecure option will be ignored and the CA file specified will be used to authenticate the server certificate and establish a secure connection to the server.

Possible values:

  • A valid path to a CA file

Related options:

  • https_insecure

https_insecure
Type:

boolean

Default:

True

Set verification of the remote server certificate.

This configuration option takes in a boolean value to determine whether or not to verify the remote server certificate. If set to True, the remote server certificate is not verified. If the option is set to False, then the default CA truststore is used for verification.

This option is ignored if https_ca_certificates_file is set. The remote server certificate will then be verified using the file specified using the https_ca_certificates_file option.

Possible values:

  • True

  • False

Related options:

  • https_ca_certificates_file

http_proxy_information
Type:

dict

Default:

{}

The http/https proxy information to be used to connect to the remote server.

This configuration option specifies the http/https proxy information that should be used to connect to the remote server. The proxy information should be a key value pair of the scheme and proxy, for example, http:10.0.0.1:3128. You can also specify proxies for multiple schemes by separating the key value pairs with a comma, for example, http:10.0.0.1:3128, https:10.0.0.1:1080.

Possible values:

  • A comma separated list of scheme:proxy pairs as described above

Related options:

  • None

glance.store.rbd.store

rbd_store_chunk_size
Type:

integer

Default:

8

Minimum Value:

1

Size, in megabytes, to chunk RADOS images into.

Provide an integer value representing the size in megabytes to chunk Glance images into. The default chunk size is 8 megabytes. For optimal performance, the value should be a power of two.

When Ceph’s RBD object storage system is used as the storage backend for storing Glance images, the images are chunked into objects of the size set using this option. These chunked objects are then stored across the distributed block data store to use for Glance.

Possible Values:

  • Any positive integer value

Related options:

  • None

rbd_store_pool
Type:

string

Default:

images

RADOS pool in which images are stored.

When RBD is used as the storage backend for storing Glance images, the images are stored by means of logical grouping of the objects (chunks of images) into a pool. Each pool is defined with the number of placement groups it can contain. The default pool that is used is ‘images’.

More information on the RBD storage backend can be found here: http://ceph.com/planet/how-data-is-stored-in-ceph-cluster/

Possible Values:

  • A valid pool name

Related options:

  • None

rbd_store_user
Type:

string

Default:

<None>

RADOS user to authenticate as.

This configuration option takes in the RADOS user to authenticate as. This is only needed when RADOS authentication is enabled and is applicable only if the user is using Cephx authentication. If the value for this option is not set by the user or is set to None, a default value will be chosen, which will be based on the client. section in rbd_store_ceph_conf.

Possible Values:

  • A valid RADOS user

Related options:

  • rbd_store_ceph_conf

rbd_store_ceph_conf
Type:

string

Default:

''

Ceph configuration file path.

This configuration option specifies the path to the Ceph configuration file to be used. If the value for this option is not set by the user or is set to the empty string, librados will read the standard ceph.conf file by searching the default Ceph configuration file locations in sequential order. See the Ceph documentation for details.

NOTE: If using Cephx authentication, this file should include a reference to the right keyring in a client.<USER> section

NOTE 2: If you leave this option empty (the default), the actual Ceph configuration file used may change depending on what version of librados is being used. If it is important for you to know exactly which configuration file is in effect, you may specify that file here using this option.

Possible Values:

  • A valid path to a configuration file

Related options:

  • rbd_store_user

rados_connect_timeout
Type:

integer

Default:

-1

Timeout value for connecting to Ceph cluster.

This configuration option takes in the timeout value in seconds used when connecting to the Ceph cluster i.e. it sets the time to wait for glance-api before closing the connection. This prevents glance-api hangups during the connection to RBD. If the value for this option is set to less than 0, no timeout is set and the default librados value is used.

Possible Values:

  • Any integer value

Related options:

  • None

rbd_thin_provisioning
Type:

boolean

Default:

False

Enable or not thin provisioning in this backend.

This configuration option enable the feature of not really write null byte sequences on the RBD backend, the holes who can appear will automatically be interpreted by Ceph as null bytes, and do not really consume your storage. Enabling this feature will also speed up image upload and save network traffic in addition to save space in the backend, as null bytes sequences are not sent over the network.

Possible Values:

  • True

  • False

Related options:

  • None

glance.store.s3.store

s3_store_host
Type:

string

Default:

<None>

The host where the S3 server is listening.

This configuration option sets the host of the S3 or S3 compatible storage Server. This option is required when using the S3 storage backend. The host can contain a DNS name (e.g. s3.amazonaws.com, my-object-storage.com) or an IP address (127.0.0.1).

Possible values:

  • A valid DNS name

  • A valid IPv4 address

Related Options:

  • s3_store_access_key

  • s3_store_secret_key

s3_store_region_name
Type:

string

Default:

''

The S3 region name.

This parameter will set the region_name used by boto. If this parameter is not set, we we will try to compute it from the s3_store_host.

Possible values:

  • A valid region name

Related Options:

  • s3_store_host

s3_store_access_key
Type:

string

Default:

<None>

The S3 query token access key.

This configuration option takes the access key for authenticating with the Amazon S3 or S3 compatible storage server. This option is required when using the S3 storage backend.

Possible values:

  • Any string value that is the access key for a user with appropriate privileges

Related Options:

  • s3_store_host

  • s3_store_secret_key

s3_store_secret_key
Type:

string

Default:

<None>

The S3 query token secret key.

This configuration option takes the secret key for authenticating with the Amazon S3 or S3 compatible storage server. This option is required when using the S3 storage backend.

Possible values:

  • Any string value that is a secret key corresponding to the access key specified using the s3_store_host option

Related Options:

  • s3_store_host

  • s3_store_access_key

s3_store_bucket
Type:

string

Default:

<None>

The S3 bucket to be used to store the Glance data.

This configuration option specifies where the glance images will be stored in the S3. If s3_store_create_bucket_on_put is set to true, it will be created automatically even if the bucket does not exist.

Possible values:

  • Any string value

Related Options:

  • s3_store_create_bucket_on_put

  • s3_store_bucket_url_format

s3_store_create_bucket_on_put
Type:

boolean

Default:

False

Determine whether S3 should create a new bucket.

This configuration option takes boolean value to indicate whether Glance should create a new bucket to S3 if it does not exist.

Possible values:

  • Any Boolean value

Related Options:

  • None

s3_store_bucket_url_format
Type:

string

Default:

auto

The S3 calling format used to determine the object.

This configuration option takes access model that is used to specify the address of an object in an S3 bucket.

NOTE: In path-style, the endpoint for the object looks like ‘https://s3.amazonaws.com/bucket/example.img’. And in virtual-style, the endpoint for the object looks like ‘https://bucket.s3.amazonaws.com/example.img’. If you do not follow the DNS naming convention in the bucket name, you can get objects in the path style, but not in the virtual style.

Possible values:

  • Any string value of auto, virtual, or path

Related Options:

  • s3_store_bucket

s3_store_large_object_size
Type:

integer

Default:

100

What size, in MB, should S3 start chunking image files and do a multipart upload in S3.

This configuration option takes a threshold in MB to determine whether to upload the image to S3 as is or to split it (Multipart Upload).

Note: You can only split up to 10,000 images.

Possible values:

  • Any positive integer value

Related Options:

  • s3_store_large_object_chunk_size

  • s3_store_thread_pools

s3_store_large_object_chunk_size
Type:

integer

Default:

10

What multipart upload part size, in MB, should S3 use when uploading parts.

This configuration option takes the image split size in MB for Multipart Upload.

Note: You can only split up to 10,000 images.

Possible values:

  • Any positive integer value (must be greater than or equal to 5M)

Related Options:

  • s3_store_large_object_size

  • s3_store_thread_pools

s3_store_thread_pools
Type:

integer

Default:

10

The number of thread pools to perform a multipart upload in S3.

This configuration option takes the number of thread pools when performing a Multipart Upload.

Possible values:

  • Any positive integer value

Related Options:

  • s3_store_large_object_size

  • s3_store_large_object_chunk_size

glance.store.swift.store

swift_store_auth_insecure
Type:

boolean

Default:

False

Set verification of the server certificate.

This boolean determines whether or not to verify the server certificate. If this option is set to True, swiftclient won’t check for a valid SSL certificate when authenticating. If the option is set to False, then the default CA truststore is used for verification.

Possible values:

  • True

  • False

Related options:

  • swift_store_cacert

swift_store_cacert
Type:

string

Default:

/etc/ssl/certs/ca-certificates.crt

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

Path to the CA bundle file.

This configuration option enables the operator to specify the path to a custom Certificate Authority file for SSL verification when connecting to Swift.

Possible values:

  • A valid path to a CA file

Related options:

  • swift_store_auth_insecure

swift_store_region
Type:

string

Default:

RegionTwo

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

The region of Swift endpoint to use by Glance.

Provide a string value representing a Swift region where Glance can connect to for image storage. By default, there is no region set.

When Glance uses Swift as the storage backend to store images for a specific tenant that has multiple endpoints, setting of a Swift region with swift_store_region allows Glance to connect to Swift in the specified region as opposed to a single region connectivity.

This option can be configured for both single-tenant and multi-tenant storage.

NOTE: Setting the region with swift_store_region is tenant-specific and is necessary only if the tenant has multiple endpoints across different regions.

Possible values:

  • A string value representing a valid Swift region.

Related Options:

  • None

swift_store_endpoint
Type:

string

Default:

https://swift.openstack.example.org/v1/path_not_including_container_name

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

The URL endpoint to use for Swift backend storage.

Provide a string value representing the URL endpoint to use for storing Glance images in Swift store. By default, an endpoint is not set and the storage URL returned by auth is used. Setting an endpoint with swift_store_endpoint overrides the storage URL and is used for Glance image storage.

NOTE: The URL should include the path up to, but excluding the container. The location of an object is obtained by appending the container and object to the configured URL.

Possible values:

  • String value representing a valid URL path up to a Swift container

Related Options:

  • None

swift_store_endpoint_type
Type:

string

Default:

publicURL

Valid Values:

publicURL, adminURL, internalURL

Endpoint Type of Swift service.

This string value indicates the endpoint type to use to fetch the Swift endpoint. The endpoint type determines the actions the user will be allowed to perform, for instance, reading and writing to the Store. This setting is only used if swift_store_auth_version is greater than 1.

Possible values:

  • publicURL

  • adminURL

  • internalURL

Related options:

  • swift_store_endpoint

swift_store_service_type
Type:

string

Default:

object-store

Type of Swift service to use.

Provide a string value representing the service type to use for storing images while using Swift backend storage. The default service type is set to object-store.

NOTE: If swift_store_auth_version is set to 2, the value for this configuration option needs to be object-store. If using a higher version of Keystone or a different auth scheme, this option may be modified.

Possible values:

  • A string representing a valid service type for Swift storage.

Related Options:

  • None

swift_store_container
Type:

string

Default:

glance

Name of single container to store images/name prefix for multiple containers

When a single container is being used to store images, this configuration option indicates the container within the Glance account to be used for storing all images. When multiple containers are used to store images, this will be the name prefix for all containers. Usage of single/multiple containers can be controlled using the configuration option swift_store_multiple_containers_seed.

When using multiple containers, the containers will be named after the value set for this configuration option with the first N chars of the image UUID as the suffix delimited by an underscore (where N is specified by swift_store_multiple_containers_seed).

Example: if the seed is set to 3 and swift_store_container = glance, then an image with UUID fdae39a1-bac5-4238-aba4-69bcc726e848 would be placed in the container glance_fda. All dashes in the UUID are included when creating the container name but do not count toward the character limit, so when N=10 the container name would be glance_fdae39a1-ba.

Possible values:

  • If using single container, this configuration option can be any string that is a valid swift container name in Glance’s Swift account

  • If using multiple containers, this configuration option can be any string as long as it satisfies the container naming rules enforced by Swift. The value of swift_store_multiple_containers_seed should be taken into account as well.

Related options:

  • swift_store_multiple_containers_seed

  • swift_store_multi_tenant

  • swift_store_create_container_on_put

swift_store_large_object_size
Type:

integer

Default:

5120

Minimum Value:

1

The size threshold, in MB, after which Glance will start segmenting image data.

Swift has an upper limit on the size of a single uploaded object. By default, this is 5GB. To upload objects bigger than this limit, objects are segmented into multiple smaller objects that are tied together with a manifest file. For more detail, refer to https://docs.openstack.org/swift/latest/overview_large_objects.html

This configuration option specifies the size threshold over which the Swift driver will start segmenting image data into multiple smaller files. Currently, the Swift driver only supports creating Dynamic Large Objects.

NOTE: This should be set by taking into account the large object limit enforced by the Swift cluster in consideration.

Possible values:

  • A positive integer that is less than or equal to the large object limit enforced by the Swift cluster in consideration.

Related options:

  • swift_store_large_object_chunk_size

swift_store_large_object_chunk_size
Type:

integer

Default:

200

Minimum Value:

1

The maximum size, in MB, of the segments when image data is segmented.

When image data is segmented to upload images that are larger than the limit enforced by the Swift cluster, image data is broken into segments that are no bigger than the size specified by this configuration option. Refer to swift_store_large_object_size for more detail.

For example: if swift_store_large_object_size is 5GB and swift_store_large_object_chunk_size is 1GB, an image of size 6.2GB will be segmented into 7 segments where the first six segments will be 1GB in size and the seventh segment will be 0.2GB.

Possible values:

  • A positive integer that is less than or equal to the large object limit enforced by Swift cluster in consideration.

Related options:

  • swift_store_large_object_size

swift_store_create_container_on_put
Type:

boolean

Default:

False

Create container, if it doesn’t already exist, when uploading image.

At the time of uploading an image, if the corresponding container doesn’t exist, it will be created provided this configuration option is set to True. By default, it won’t be created. This behavior is applicable for both single and multiple containers mode.

Possible values:

  • True

  • False

Related options:

  • None

swift_store_multi_tenant
Type:

boolean

Default:

False

Store images in tenant’s Swift account.

This enables multi-tenant storage mode which causes Glance images to be stored in tenant specific Swift accounts. If this is disabled, Glance stores all images in its own account. More details multi-tenant store can be found at https://wiki.openstack.org/wiki/GlanceSwiftTenantSpecificStorage

NOTE: If using multi-tenant swift store, please make sure that you do not set a swift configuration file with the ‘swift_store_config_file’ option.

Possible values:

  • True

  • False

Related options:

  • swift_store_config_file

swift_store_multiple_containers_seed
Type:

integer

Default:

0

Minimum Value:

0

Maximum Value:

32

Seed indicating the number of containers to use for storing images.

When using a single-tenant store, images can be stored in one or more than one containers. When set to 0, all images will be stored in one single container. When set to an integer value between 1 and 32, multiple containers will be used to store images. This configuration option will determine how many containers are created. The total number of containers that will be used is equal to 16^N, so if this config option is set to 2, then 16^2=256 containers will be used to store images.

Please refer to swift_store_container for more detail on the naming convention. More detail about using multiple containers can be found at https://specs.openstack.org/openstack/glance-specs/specs/kilo/swift-store-multiple-containers.html

NOTE: This is used only when swift_store_multi_tenant is disabled.

Possible values:

  • A non-negative integer less than or equal to 32

Related options:

  • swift_store_container

  • swift_store_multi_tenant

  • swift_store_create_container_on_put

swift_store_admin_tenants
Type:

list

Default:

[]

List of tenants that will be granted admin access.

This is a list of tenants that will be granted read/write access on all Swift containers created by Glance in multi-tenant mode. The default value is an empty list.

Possible values:

  • A comma separated list of strings representing UUIDs of Keystone projects/tenants

Related options:

  • None

swift_store_ssl_compression
Type:

boolean

Default:

True

SSL layer compression for HTTPS Swift requests.

Provide a boolean value to determine whether or not to compress HTTPS Swift requests for images at the SSL layer. By default, compression is enabled.

When using Swift as the backend store for Glance image storage, SSL layer compression of HTTPS Swift requests can be set using this option. If set to False, SSL layer compression of HTTPS Swift requests is disabled. Disabling this option may improve performance for images which are already in a compressed format, for example, qcow2.

Possible values:

  • True

  • False

Related Options:

  • None

swift_store_retry_get_count
Type:

integer

Default:

0

Minimum Value:

0

The number of times a Swift download will be retried before the request fails.

Provide an integer value representing the number of times an image download must be retried before erroring out. The default value is zero (no retry on a failed image download). When set to a positive integer value, swift_store_retry_get_count ensures that the download is attempted this many more times upon a download failure before sending an error message.

Possible values:

  • Zero

  • Positive integer value

Related Options:

  • None

swift_store_expire_soon_interval
Type:

integer

Default:

60

Minimum Value:

0

Time in seconds defining the size of the window in which a new token may be requested before the current token is due to expire.

Typically, the Swift storage driver fetches a new token upon the expiration of the current token to ensure continued access to Swift. However, some Swift transactions (like uploading image segments) may not recover well if the token expires on the fly.

Hence, by fetching a new token before the current token expiration, we make sure that the token does not expire or is close to expiry before a transaction is attempted. By default, the Swift storage driver requests for a new token 60 seconds or less before the current token expiration.

Possible values:

  • Zero

  • Positive integer value

Related Options:

  • None

swift_store_use_trusts
Type:

boolean

Default:

True

Use trusts for multi-tenant Swift store.

This option instructs the Swift store to create a trust for each add/get request when the multi-tenant store is in use. Using trusts allows the Swift store to avoid problems that can be caused by an authentication token expiring during the upload or download of data.

By default, swift_store_use_trusts is set to True``(use of trusts is enabled). If set to ``False, a user token is used for the Swift connection instead, eliminating the overhead of trust creation.

NOTE: This option is considered only when swift_store_multi_tenant is set to True

Possible values:

  • True

  • False

Related options:

  • swift_store_multi_tenant

swift_buffer_on_upload
Type:

boolean

Default:

False

Buffer image segments before upload to Swift.

Provide a boolean value to indicate whether or not Glance should buffer image data to disk while uploading to swift. This enables Glance to resume uploads on error.

NOTES: When enabling this option, one should take great care as this increases disk usage on the API node. Be aware that depending upon how the file system is configured, the disk space used for buffering may decrease the actual disk space available for the glance image cache. Disk utilization will cap according to the following equation: (swift_store_large_object_chunk_size * workers * 1000)

Possible values:

  • True

  • False

Related options:

  • swift_upload_buffer_dir

default_swift_reference
Type:

string

Default:

ref1

Reference to default Swift account/backing store parameters.

Provide a string value representing a reference to the default set of parameters required for using swift account/backing store for image storage. The default reference value for this configuration option is ‘ref1’. This configuration option dereferences the parameters and facilitates image storage in Swift storage backend every time a new image is added.

Possible values:

  • A valid string value

Related options:

  • None

swift_store_auth_version
Type:

string

Default:

2

Version of the authentication service to use. Valid versions are 2 and 3 for keystone and 1 (deprecated) for swauth and rackspace.

Warning

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

Reason:

The option ‘auth_version’ in the Swift back-end configuration file is used instead.

swift_store_auth_address
Type:

string

Default:

<None>

The address where the Swift authentication service is listening.

Warning

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

Reason:

The option ‘auth_address’ in the Swift back-end configuration file is used instead.

swift_store_user
Type:

string

Default:

<None>

The user to authenticate against the Swift authentication service.

Warning

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

Reason:

The option ‘user’ in the Swift back-end configuration file is set instead.

swift_store_key
Type:

string

Default:

<None>

Auth key for the user authenticating against the Swift authentication service.

Warning

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

Reason:

The option ‘key’ in the Swift back-end configuration file is used to set the authentication key instead.

swift_store_config_file
Type:

string

Default:

<None>

Absolute path to the file containing the swift account(s) configurations.

Include a string value representing the path to a configuration file that has references for each of the configured Swift account(s)/backing stores. By default, no file path is specified and customized Swift referencing is disabled. Configuring this option is highly recommended while using Swift storage backend for image storage as it avoids storage of credentials in the database.

NOTE: Please do not configure this option if you have set swift_store_multi_tenant to True.

Possible values:

  • String value representing an absolute path on the glance-api node

Related options:

  • swift_store_multi_tenant

swift_upload_buffer_dir
Type:

string

Default:

<None>

Directory to buffer image segments before upload to Swift.

Provide a string value representing the absolute path to the directory on the glance node where image segments will be buffered briefly before they are uploaded to swift.

NOTES:

  • This is required only when the configuration option swift_buffer_on_upload is set to True.

  • This directory should be provisioned keeping in mind the swift_store_large_object_chunk_size and the maximum number of images that could be uploaded simultaneously by a given glance node.

Possible values:

  • String value representing an absolute directory path

Related options:

  • swift_buffer_on_upload

  • swift_store_large_object_chunk_size

glance.store.vmware_datastore.store

vmware_server_host
Type:

host address

Default:

127.0.0.1

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

Address of the ESX/ESXi or vCenter Server target system.

This configuration option sets the address of the ESX/ESXi or vCenter Server target system. This option is required when using the VMware storage backend. The address can contain an IP address (127.0.0.1) or a DNS name (www.my-domain.com).

Possible Values:

  • A valid IPv4 or IPv6 address

  • A valid DNS name

Related options:

  • vmware_server_username

  • vmware_server_password

vmware_server_username
Type:

string

Default:

root

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

Server username.

This configuration option takes the username for authenticating with the VMware ESX/ESXi or vCenter Server. This option is required when using the VMware storage backend.

Possible Values:

  • Any string that is the username for a user with appropriate privileges

Related options:

  • vmware_server_host

  • vmware_server_password

vmware_server_password
Type:

string

Default:

vmware

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

Server password.

This configuration option takes the password for authenticating with the VMware ESX/ESXi or vCenter Server. This option is required when using the VMware storage backend.

Possible Values:

  • Any string that is a password corresponding to the username specified using the “vmware_server_username” option

Related options:

  • vmware_server_host

  • vmware_server_username

vmware_api_retry_count
Type:

integer

Default:

10

Minimum Value:

1

The number of VMware API retries.

This configuration option specifies the number of times the VMware ESX/VC server API must be retried upon connection related issues or server API call overload. It is not possible to specify ‘retry forever’.

Possible Values:

  • Any positive integer value

Related options:

  • None

vmware_task_poll_interval
Type:

integer

Default:

5

Minimum Value:

1

Interval in seconds used for polling remote tasks invoked on VMware ESX/VC server.

This configuration option takes in the sleep time in seconds for polling an on-going async task as part of the VMWare ESX/VC server API call.

Possible Values:

  • Any positive integer value

Related options:

  • None

vmware_store_image_dir
Type:

string

Default:

/openstack_glance

The directory where the glance images will be stored in the datastore.

This configuration option specifies the path to the directory where the glance images will be stored in the VMware datastore. If this option is not set, the default directory where the glance images are stored is openstack_glance.

Possible Values:

  • Any string that is a valid path to a directory

Related options:

  • None

vmware_insecure
Type:

boolean

Default:

False

Set verification of the ESX/vCenter server certificate.

This configuration option takes a boolean value to determine whether or not to verify the ESX/vCenter server certificate. If this option is set to True, the ESX/vCenter server certificate is not verified. If this option is set to False, then the default CA truststore is used for verification.

This option is ignored if the “vmware_ca_file” option is set. In that case, the ESX/vCenter server certificate will then be verified using the file specified using the “vmware_ca_file” option .

Possible Values:

  • True

  • False

Related options:

  • vmware_ca_file

Deprecated Variations

Group

Name

glance.store.vmware_datastore.store

vmware_api_insecure
vmware_ca_file
Type:

string

Default:

/etc/ssl/certs/ca-certificates.crt

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

Absolute path to the CA bundle file.

This configuration option enables the operator to use a custom Cerificate Authority File to verify the ESX/vCenter certificate.

If this option is set, the “vmware_insecure” option will be ignored and the CA file specified will be used to authenticate the ESX/vCenter server certificate and establish a secure connection to the server.

Possible Values:

  • Any string that is a valid absolute path to a CA file

Related options:

  • vmware_insecure

vmware_datastores
Type:

multi-valued

Default:

''

The datastores where the image can be stored.

This configuration option specifies the datastores where the image can be stored in the VMWare store backend. This option may be specified multiple times for specifying multiple datastores. The datastore name should be specified after its datacenter path, separated by “:”. An optional weight may be given after the datastore name, separated again by “:” to specify the priority. Thus, the required format becomes <datacenter_path>:<datastore_name>:<optional_weight>.

When adding an image, the datastore with highest weight will be selected, unless there is not enough free space available in cases where the image size is already known. If no weight is given, it is assumed to be zero and the directory will be considered for selection last. If multiple datastores have the same weight, then the one with the most free space available is selected.

Possible Values:

  • Any string of the format: <datacenter_path>:<datastore_name>:<optional_weight>

Related options:

  • None

glance_store

default_backend
Type:

string

Default:

<None>

The store identifier for the default backend in which data will be stored.

The value must be defined as one of the keys in the dict defined by the enabled_backends configuration option in the DEFAULT configuration group.

If a value is not defined for this option:

  • the consuming service may refuse to start

  • store_add calls that do not specify a specific backend will raise a glance_store.exceptions.UnknownScheme exception

Related Options:

  • enabled_backends

stores
Type:

list

Default:

['file', 'http']

List of enabled Glance stores.

Register the storage backends to use for storing disk images as a comma separated list. The default stores enabled for storing disk images with Glance are file and http.

Possible values:
  • A comma separated list that could include:

    • file

    • http

    • swift

    • rbd

    • cinder

    • vmware

    • s3

Related Options:

  • default_store

Warning

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

Reason:

This option is deprecated against new config option enabled_backends which helps to configure multiple backend stores of different schemes. This option is scheduled for removal in the U development cycle.

default_store
Type:

string

Default:

file

Valid Values:

file, filesystem, http, https, swift, swift+http, swift+https, swift+config, rbd, cinder, vsphere, s3

The default scheme to use for storing images.

Provide a string value representing the default scheme to use for storing images. If not set, Glance uses file as the default scheme to store images with the file store.

NOTE: The value given for this configuration option must be a valid scheme for a store registered with the stores configuration option.

Possible values:

  • file

  • filesystem

  • http

  • https

  • swift

  • swift+http

  • swift+https

  • swift+config

  • rbd

  • cinder

  • vsphere

  • s3

Related Options:

  • stores

Warning

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

Reason:

This option is deprecated against new config option default_backend which acts similar to default_store config option. This option is scheduled for removal in the U development cycle.

filesystem_store_datadir
Type:

string

Default:

/var/lib/glance/images

Directory to which the filesystem backend store writes images.

Upon start up, Glance creates the directory if it doesn’t already exist and verifies write access to the user under which glance-api runs. If the write access isn’t available, a BadStoreConfiguration exception is raised and the filesystem store may not be available for adding new images.

NOTE: This directory is used only when filesystem store is used as a storage backend. Either filesystem_store_datadir or filesystem_store_datadirs option must be specified in glance-api.conf. If both options are specified, a BadStoreConfiguration will be raised and the filesystem store may not be available for adding new images.

Possible values:

  • A valid path to a directory

Related options:

  • filesystem_store_datadirs

  • filesystem_store_file_perm

filesystem_store_datadirs
Type:

multi-valued

Default:

''

List of directories and their priorities to which the filesystem backend store writes images.

The filesystem store can be configured to store images in multiple directories as opposed to using a single directory specified by the filesystem_store_datadir configuration option. When using multiple directories, each directory can be given an optional priority to specify the preference order in which they should be used. Priority is an integer that is concatenated to the directory path with a colon where a higher value indicates higher priority. When two directories have the same priority, the directory with most free space is used. When no priority is specified, it defaults to zero.

More information on configuring filesystem store with multiple store directories can be found at https://docs.openstack.org/glance/latest/configuration/configuring.html

NOTE: This directory is used only when filesystem store is used as a storage backend. Either filesystem_store_datadir or filesystem_store_datadirs option must be specified in glance-api.conf. If both options are specified, a BadStoreConfiguration will be raised and the filesystem store may not be available for adding new images.

Possible values:
  • List of strings of the following form:

    • <a valid directory path>:<optional integer priority>

Related options:

  • filesystem_store_datadir

  • filesystem_store_file_perm

filesystem_store_metadata_file
Type:

string

Default:

<None>

Filesystem store metadata file.

The path to a file which contains the metadata to be returned with any location associated with the filesystem store. Once this option is set, it is used for new images created afterward only - previously existing images are not affected.

The file must contain a valid JSON object. The object should contain the keys id and mountpoint. The value for both keys should be a string.

Possible values:

  • A valid path to the store metadata file

Related options:

  • None

filesystem_store_file_perm
Type:

integer

Default:

0

File access permissions for the image files.

Set the intended file access permissions for image data. This provides a way to enable other services, e.g. Nova, to consume images directly from the filesystem store. The users running the services that are intended to be given access to could be made a member of the group that owns the files created. Assigning a value less then or equal to zero for this configuration option signifies that no changes be made to the default permissions. This value will be decoded as an octal digit.

For more information, please refer the documentation at https://docs.openstack.org/glance/latest/configuration/configuring.html

Possible values:

  • A valid file access permission

  • Zero

  • Any negative integer

Related options:

  • None

filesystem_store_chunk_size
Type:

integer

Default:

65536

Minimum Value:

1

Chunk size, in bytes.

The chunk size used when reading or writing image files. Raising this value may improve the throughput but it may also slightly increase the memory usage when handling a large number of requests.

Possible Values:

  • Any positive integer value

Related options:

  • None

filesystem_thin_provisioning
Type:

boolean

Default:

False

Enable or not thin provisioning in this backend.

This configuration option enable the feature of not really write null byte sequences on the filesystem, the holes who can appear will automatically be interpreted by the filesystem as null bytes, and do not really consume your storage. Enabling this feature will also speed up image upload and save network traffic in addition to save space in the backend, as null bytes sequences are not sent over the network.

Possible Values:

  • True

  • False

Related options:

  • None

https_ca_certificates_file
Type:

string

Default:

<None>

Path to the CA bundle file.

This configuration option enables the operator to use a custom Certificate Authority file to verify the remote server certificate. If this option is set, the https_insecure option will be ignored and the CA file specified will be used to authenticate the server certificate and establish a secure connection to the server.

Possible values:

  • A valid path to a CA file

Related options:

  • https_insecure

https_insecure
Type:

boolean

Default:

True

Set verification of the remote server certificate.

This configuration option takes in a boolean value to determine whether or not to verify the remote server certificate. If set to True, the remote server certificate is not verified. If the option is set to False, then the default CA truststore is used for verification.

This option is ignored if https_ca_certificates_file is set. The remote server certificate will then be verified using the file specified using the https_ca_certificates_file option.

Possible values:

  • True

  • False

Related options:

  • https_ca_certificates_file

http_proxy_information
Type:

dict

Default:

{}

The http/https proxy information to be used to connect to the remote server.

This configuration option specifies the http/https proxy information that should be used to connect to the remote server. The proxy information should be a key value pair of the scheme and proxy, for example, http:10.0.0.1:3128. You can also specify proxies for multiple schemes by separating the key value pairs with a comma, for example, http:10.0.0.1:3128, https:10.0.0.1:1080.

Possible values:

  • A comma separated list of scheme:proxy pairs as described above

Related options:

  • None

rbd_store_chunk_size
Type:

integer

Default:

8

Minimum Value:

1

Size, in megabytes, to chunk RADOS images into.

Provide an integer value representing the size in megabytes to chunk Glance images into. The default chunk size is 8 megabytes. For optimal performance, the value should be a power of two.

When Ceph’s RBD object storage system is used as the storage backend for storing Glance images, the images are chunked into objects of the size set using this option. These chunked objects are then stored across the distributed block data store to use for Glance.

Possible Values:

  • Any positive integer value

Related options:

  • None

rbd_store_pool
Type:

string

Default:

images

RADOS pool in which images are stored.

When RBD is used as the storage backend for storing Glance images, the images are stored by means of logical grouping of the objects (chunks of images) into a pool. Each pool is defined with the number of placement groups it can contain. The default pool that is used is ‘images’.

More information on the RBD storage backend can be found here: http://ceph.com/planet/how-data-is-stored-in-ceph-cluster/

Possible Values:

  • A valid pool name

Related options:

  • None

rbd_store_user
Type:

string

Default:

<None>

RADOS user to authenticate as.

This configuration option takes in the RADOS user to authenticate as. This is only needed when RADOS authentication is enabled and is applicable only if the user is using Cephx authentication. If the value for this option is not set by the user or is set to None, a default value will be chosen, which will be based on the client. section in rbd_store_ceph_conf.

Possible Values:

  • A valid RADOS user

Related options:

  • rbd_store_ceph_conf

rbd_store_ceph_conf
Type:

string

Default:

''

Ceph configuration file path.

This configuration option specifies the path to the Ceph configuration file to be used. If the value for this option is not set by the user or is set to the empty string, librados will read the standard ceph.conf file by searching the default Ceph configuration file locations in sequential order. See the Ceph documentation for details.

NOTE: If using Cephx authentication, this file should include a reference to the right keyring in a client.<USER> section

NOTE 2: If you leave this option empty (the default), the actual Ceph configuration file used may change depending on what version of librados is being used. If it is important for you to know exactly which configuration file is in effect, you may specify that file here using this option.

Possible Values:

  • A valid path to a configuration file

Related options:

  • rbd_store_user

rados_connect_timeout
Type:

integer

Default:

-1

Timeout value for connecting to Ceph cluster.

This configuration option takes in the timeout value in seconds used when connecting to the Ceph cluster i.e. it sets the time to wait for glance-api before closing the connection. This prevents glance-api hangups during the connection to RBD. If the value for this option is set to less than 0, no timeout is set and the default librados value is used.

Possible Values:

  • Any integer value

Related options:

  • None

rbd_thin_provisioning
Type:

boolean

Default:

False

Enable or not thin provisioning in this backend.

This configuration option enable the feature of not really write null byte sequences on the RBD backend, the holes who can appear will automatically be interpreted by Ceph as null bytes, and do not really consume your storage. Enabling this feature will also speed up image upload and save network traffic in addition to save space in the backend, as null bytes sequences are not sent over the network.

Possible Values:

  • True

  • False

Related options:

  • None

s3_store_host
Type:

string

Default:

<None>

The host where the S3 server is listening.

This configuration option sets the host of the S3 or S3 compatible storage Server. This option is required when using the S3 storage backend. The host can contain a DNS name (e.g. s3.amazonaws.com, my-object-storage.com) or an IP address (127.0.0.1).

Possible values:

  • A valid DNS name

  • A valid IPv4 address

Related Options:

  • s3_store_access_key

  • s3_store_secret_key

s3_store_region_name
Type:

string

Default:

''

The S3 region name.

This parameter will set the region_name used by boto. If this parameter is not set, we we will try to compute it from the s3_store_host.

Possible values:

  • A valid region name

Related Options:

  • s3_store_host

s3_store_access_key
Type:

string

Default:

<None>

The S3 query token access key.

This configuration option takes the access key for authenticating with the Amazon S3 or S3 compatible storage server. This option is required when using the S3 storage backend.

Possible values:

  • Any string value that is the access key for a user with appropriate privileges

Related Options:

  • s3_store_host

  • s3_store_secret_key

s3_store_secret_key
Type:

string

Default:

<None>

The S3 query token secret key.

This configuration option takes the secret key for authenticating with the Amazon S3 or S3 compatible storage server. This option is required when using the S3 storage backend.

Possible values:

  • Any string value that is a secret key corresponding to the access key specified using the s3_store_host option

Related Options:

  • s3_store_host

  • s3_store_access_key

s3_store_bucket
Type:

string

Default:

<None>

The S3 bucket to be used to store the Glance data.

This configuration option specifies where the glance images will be stored in the S3. If s3_store_create_bucket_on_put is set to true, it will be created automatically even if the bucket does not exist.

Possible values:

  • Any string value

Related Options:

  • s3_store_create_bucket_on_put

  • s3_store_bucket_url_format

s3_store_create_bucket_on_put
Type:

boolean

Default:

False

Determine whether S3 should create a new bucket.

This configuration option takes boolean value to indicate whether Glance should create a new bucket to S3 if it does not exist.

Possible values:

  • Any Boolean value

Related Options:

  • None

s3_store_bucket_url_format
Type:

string

Default:

auto

The S3 calling format used to determine the object.

This configuration option takes access model that is used to specify the address of an object in an S3 bucket.

NOTE: In path-style, the endpoint for the object looks like ‘https://s3.amazonaws.com/bucket/example.img’. And in virtual-style, the endpoint for the object looks like ‘https://bucket.s3.amazonaws.com/example.img’. If you do not follow the DNS naming convention in the bucket name, you can get objects in the path style, but not in the virtual style.

Possible values:

  • Any string value of auto, virtual, or path

Related Options:

  • s3_store_bucket

s3_store_large_object_size
Type:

integer

Default:

100

What size, in MB, should S3 start chunking image files and do a multipart upload in S3.

This configuration option takes a threshold in MB to determine whether to upload the image to S3 as is or to split it (Multipart Upload).

Note: You can only split up to 10,000 images.

Possible values:

  • Any positive integer value

Related Options:

  • s3_store_large_object_chunk_size

  • s3_store_thread_pools

s3_store_large_object_chunk_size
Type:

integer

Default:

10

What multipart upload part size, in MB, should S3 use when uploading parts.

This configuration option takes the image split size in MB for Multipart Upload.

Note: You can only split up to 10,000 images.

Possible values:

  • Any positive integer value (must be greater than or equal to 5M)

Related Options:

  • s3_store_large_object_size

  • s3_store_thread_pools

s3_store_thread_pools
Type:

integer

Default:

10

The number of thread pools to perform a multipart upload in S3.

This configuration option takes the number of thread pools when performing a Multipart Upload.

Possible values:

  • Any positive integer value

Related Options:

  • s3_store_large_object_size

  • s3_store_large_object_chunk_size

swift_store_auth_insecure
Type:

boolean

Default:

False

Set verification of the server certificate.

This boolean determines whether or not to verify the server certificate. If this option is set to True, swiftclient won’t check for a valid SSL certificate when authenticating. If the option is set to False, then the default CA truststore is used for verification.

Possible values:

  • True

  • False

Related options:

  • swift_store_cacert

swift_store_cacert
Type:

string

Default:

/etc/ssl/certs/ca-certificates.crt

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

Path to the CA bundle file.

This configuration option enables the operator to specify the path to a custom Certificate Authority file for SSL verification when connecting to Swift.

Possible values:

  • A valid path to a CA file

Related options:

  • swift_store_auth_insecure

swift_store_region
Type:

string

Default:

RegionTwo

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

The region of Swift endpoint to use by Glance.

Provide a string value representing a Swift region where Glance can connect to for image storage. By default, there is no region set.

When Glance uses Swift as the storage backend to store images for a specific tenant that has multiple endpoints, setting of a Swift region with swift_store_region allows Glance to connect to Swift in the specified region as opposed to a single region connectivity.

This option can be configured for both single-tenant and multi-tenant storage.

NOTE: Setting the region with swift_store_region is tenant-specific and is necessary only if the tenant has multiple endpoints across different regions.

Possible values:

  • A string value representing a valid Swift region.

Related Options:

  • None

swift_store_endpoint
Type:

string

Default:

https://swift.openstack.example.org/v1/path_not_including_container_name

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

The URL endpoint to use for Swift backend storage.

Provide a string value representing the URL endpoint to use for storing Glance images in Swift store. By default, an endpoint is not set and the storage URL returned by auth is used. Setting an endpoint with swift_store_endpoint overrides the storage URL and is used for Glance image storage.

NOTE: The URL should include the path up to, but excluding the container. The location of an object is obtained by appending the container and object to the configured URL.

Possible values:

  • String value representing a valid URL path up to a Swift container

Related Options:

  • None

swift_store_endpoint_type
Type:

string

Default:

publicURL

Valid Values:

publicURL, adminURL, internalURL

Endpoint Type of Swift service.

This string value indicates the endpoint type to use to fetch the Swift endpoint. The endpoint type determines the actions the user will be allowed to perform, for instance, reading and writing to the Store. This setting is only used if swift_store_auth_version is greater than 1.

Possible values:

  • publicURL

  • adminURL

  • internalURL

Related options:

  • swift_store_endpoint

swift_store_service_type
Type:

string

Default:

object-store

Type of Swift service to use.

Provide a string value representing the service type to use for storing images while using Swift backend storage. The default service type is set to object-store.

NOTE: If swift_store_auth_version is set to 2, the value for this configuration option needs to be object-store. If using a higher version of Keystone or a different auth scheme, this option may be modified.

Possible values:

  • A string representing a valid service type for Swift storage.

Related Options:

  • None

swift_store_container
Type:

string

Default:

glance

Name of single container to store images/name prefix for multiple containers

When a single container is being used to store images, this configuration option indicates the container within the Glance account to be used for storing all images. When multiple containers are used to store images, this will be the name prefix for all containers. Usage of single/multiple containers can be controlled using the configuration option swift_store_multiple_containers_seed.

When using multiple containers, the containers will be named after the value set for this configuration option with the first N chars of the image UUID as the suffix delimited by an underscore (where N is specified by swift_store_multiple_containers_seed).

Example: if the seed is set to 3 and swift_store_container = glance, then an image with UUID fdae39a1-bac5-4238-aba4-69bcc726e848 would be placed in the container glance_fda. All dashes in the UUID are included when creating the container name but do not count toward the character limit, so when N=10 the container name would be glance_fdae39a1-ba.

Possible values:

  • If using single container, this configuration option can be any string that is a valid swift container name in Glance’s Swift account

  • If using multiple containers, this configuration option can be any string as long as it satisfies the container naming rules enforced by Swift. The value of swift_store_multiple_containers_seed should be taken into account as well.

Related options:

  • swift_store_multiple_containers_seed

  • swift_store_multi_tenant

  • swift_store_create_container_on_put

swift_store_large_object_size
Type:

integer

Default:

5120

Minimum Value:

1

The size threshold, in MB, after which Glance will start segmenting image data.

Swift has an upper limit on the size of a single uploaded object. By default, this is 5GB. To upload objects bigger than this limit, objects are segmented into multiple smaller objects that are tied together with a manifest file. For more detail, refer to https://docs.openstack.org/swift/latest/overview_large_objects.html

This configuration option specifies the size threshold over which the Swift driver will start segmenting image data into multiple smaller files. Currently, the Swift driver only supports creating Dynamic Large Objects.

NOTE: This should be set by taking into account the large object limit enforced by the Swift cluster in consideration.

Possible values:

  • A positive integer that is less than or equal to the large object limit enforced by the Swift cluster in consideration.

Related options:

  • swift_store_large_object_chunk_size

swift_store_large_object_chunk_size
Type:

integer

Default:

200

Minimum Value:

1

The maximum size, in MB, of the segments when image data is segmented.

When image data is segmented to upload images that are larger than the limit enforced by the Swift cluster, image data is broken into segments that are no bigger than the size specified by this configuration option. Refer to swift_store_large_object_size for more detail.

For example: if swift_store_large_object_size is 5GB and swift_store_large_object_chunk_size is 1GB, an image of size 6.2GB will be segmented into 7 segments where the first six segments will be 1GB in size and the seventh segment will be 0.2GB.

Possible values:

  • A positive integer that is less than or equal to the large object limit enforced by Swift cluster in consideration.

Related options:

  • swift_store_large_object_size

swift_store_create_container_on_put
Type:

boolean

Default:

False

Create container, if it doesn’t already exist, when uploading image.

At the time of uploading an image, if the corresponding container doesn’t exist, it will be created provided this configuration option is set to True. By default, it won’t be created. This behavior is applicable for both single and multiple containers mode.

Possible values:

  • True

  • False

Related options:

  • None

swift_store_multi_tenant
Type:

boolean

Default:

False

Store images in tenant’s Swift account.

This enables multi-tenant storage mode which causes Glance images to be stored in tenant specific Swift accounts. If this is disabled, Glance stores all images in its own account. More details multi-tenant store can be found at https://wiki.openstack.org/wiki/GlanceSwiftTenantSpecificStorage

NOTE: If using multi-tenant swift store, please make sure that you do not set a swift configuration file with the ‘swift_store_config_file’ option.

Possible values:

  • True

  • False

Related options:

  • swift_store_config_file

swift_store_multiple_containers_seed
Type:

integer

Default:

0

Minimum Value:

0

Maximum Value:

32

Seed indicating the number of containers to use for storing images.

When using a single-tenant store, images can be stored in one or more than one containers. When set to 0, all images will be stored in one single container. When set to an integer value between 1 and 32, multiple containers will be used to store images. This configuration option will determine how many containers are created. The total number of containers that will be used is equal to 16^N, so if this config option is set to 2, then 16^2=256 containers will be used to store images.

Please refer to swift_store_container for more detail on the naming convention. More detail about using multiple containers can be found at https://specs.openstack.org/openstack/glance-specs/specs/kilo/swift-store-multiple-containers.html

NOTE: This is used only when swift_store_multi_tenant is disabled.

Possible values:

  • A non-negative integer less than or equal to 32

Related options:

  • swift_store_container

  • swift_store_multi_tenant

  • swift_store_create_container_on_put

swift_store_admin_tenants
Type:

list

Default:

[]

List of tenants that will be granted admin access.

This is a list of tenants that will be granted read/write access on all Swift containers created by Glance in multi-tenant mode. The default value is an empty list.

Possible values:

  • A comma separated list of strings representing UUIDs of Keystone projects/tenants

Related options:

  • None

swift_store_ssl_compression
Type:

boolean

Default:

True

SSL layer compression for HTTPS Swift requests.

Provide a boolean value to determine whether or not to compress HTTPS Swift requests for images at the SSL layer. By default, compression is enabled.

When using Swift as the backend store for Glance image storage, SSL layer compression of HTTPS Swift requests can be set using this option. If set to False, SSL layer compression of HTTPS Swift requests is disabled. Disabling this option may improve performance for images which are already in a compressed format, for example, qcow2.

Possible values:

  • True

  • False

Related Options:

  • None

swift_store_retry_get_count
Type:

integer

Default:

0

Minimum Value:

0

The number of times a Swift download will be retried before the request fails.

Provide an integer value representing the number of times an image download must be retried before erroring out. The default value is zero (no retry on a failed image download). When set to a positive integer value, swift_store_retry_get_count ensures that the download is attempted this many more times upon a download failure before sending an error message.

Possible values:

  • Zero

  • Positive integer value

Related Options:

  • None

swift_store_expire_soon_interval
Type:

integer

Default:

60

Minimum Value:

0

Time in seconds defining the size of the window in which a new token may be requested before the current token is due to expire.

Typically, the Swift storage driver fetches a new token upon the expiration of the current token to ensure continued access to Swift. However, some Swift transactions (like uploading image segments) may not recover well if the token expires on the fly.

Hence, by fetching a new token before the current token expiration, we make sure that the token does not expire or is close to expiry before a transaction is attempted. By default, the Swift storage driver requests for a new token 60 seconds or less before the current token expiration.

Possible values:

  • Zero

  • Positive integer value

Related Options:

  • None

swift_store_use_trusts
Type:

boolean

Default:

True

Use trusts for multi-tenant Swift store.

This option instructs the Swift store to create a trust for each add/get request when the multi-tenant store is in use. Using trusts allows the Swift store to avoid problems that can be caused by an authentication token expiring during the upload or download of data.

By default, swift_store_use_trusts is set to True``(use of trusts is enabled). If set to ``False, a user token is used for the Swift connection instead, eliminating the overhead of trust creation.

NOTE: This option is considered only when swift_store_multi_tenant is set to True

Possible values:

  • True

  • False

Related options:

  • swift_store_multi_tenant

swift_buffer_on_upload
Type:

boolean

Default:

False

Buffer image segments before upload to Swift.

Provide a boolean value to indicate whether or not Glance should buffer image data to disk while uploading to swift. This enables Glance to resume uploads on error.

NOTES: When enabling this option, one should take great care as this increases disk usage on the API node. Be aware that depending upon how the file system is configured, the disk space used for buffering may decrease the actual disk space available for the glance image cache. Disk utilization will cap according to the following equation: (swift_store_large_object_chunk_size * workers * 1000)

Possible values:

  • True

  • False

Related options:

  • swift_upload_buffer_dir

default_swift_reference
Type:

string

Default:

ref1

Reference to default Swift account/backing store parameters.

Provide a string value representing a reference to the default set of parameters required for using swift account/backing store for image storage. The default reference value for this configuration option is ‘ref1’. This configuration option dereferences the parameters and facilitates image storage in Swift storage backend every time a new image is added.

Possible values:

  • A valid string value

Related options:

  • None

swift_store_auth_version
Type:

string

Default:

2

Version of the authentication service to use. Valid versions are 2 and 3 for keystone and 1 (deprecated) for swauth and rackspace.

Warning

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

Reason:

The option ‘auth_version’ in the Swift back-end configuration file is used instead.

swift_store_auth_address
Type:

string

Default:

<None>

The address where the Swift authentication service is listening.

Warning

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

Reason:

The option ‘auth_address’ in the Swift back-end configuration file is used instead.

swift_store_user
Type:

string

Default:

<None>

The user to authenticate against the Swift authentication service.

Warning

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

Reason:

The option ‘user’ in the Swift back-end configuration file is set instead.

swift_store_key
Type:

string

Default:

<None>

Auth key for the user authenticating against the Swift authentication service.

Warning

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

Reason:

The option ‘key’ in the Swift back-end configuration file is used to set the authentication key instead.

swift_store_config_file
Type:

string

Default:

<None>

Absolute path to the file containing the swift account(s) configurations.

Include a string value representing the path to a configuration file that has references for each of the configured Swift account(s)/backing stores. By default, no file path is specified and customized Swift referencing is disabled. Configuring this option is highly recommended while using Swift storage backend for image storage as it avoids storage of credentials in the database.

NOTE: Please do not configure this option if you have set swift_store_multi_tenant to True.

Possible values:

  • String value representing an absolute path on the glance-api node

Related options:

  • swift_store_multi_tenant

swift_upload_buffer_dir
Type:

string

Default:

<None>

Directory to buffer image segments before upload to Swift.

Provide a string value representing the absolute path to the directory on the glance node where image segments will be buffered briefly before they are uploaded to swift.

NOTES:

  • This is required only when the configuration option swift_buffer_on_upload is set to True.

  • This directory should be provisioned keeping in mind the swift_store_large_object_chunk_size and the maximum number of images that could be uploaded simultaneously by a given glance node.

Possible values:

  • String value representing an absolute directory path

Related options:

  • swift_buffer_on_upload

  • swift_store_large_object_chunk_size

vmware_server_host
Type:

host address

Default:

127.0.0.1

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

Address of the ESX/ESXi or vCenter Server target system.

This configuration option sets the address of the ESX/ESXi or vCenter Server target system. This option is required when using the VMware storage backend. The address can contain an IP address (127.0.0.1) or a DNS name (www.my-domain.com).

Possible Values:

  • A valid IPv4 or IPv6 address

  • A valid DNS name

Related options:

  • vmware_server_username

  • vmware_server_password

vmware_server_username
Type:

string

Default:

root

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

Server username.

This configuration option takes the username for authenticating with the VMware ESX/ESXi or vCenter Server. This option is required when using the VMware storage backend.

Possible Values:

  • Any string that is the username for a user with appropriate privileges

Related options:

  • vmware_server_host

  • vmware_server_password

vmware_server_password
Type:

string

Default:

vmware

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

Server password.

This configuration option takes the password for authenticating with the VMware ESX/ESXi or vCenter Server. This option is required when using the VMware storage backend.

Possible Values:

  • Any string that is a password corresponding to the username specified using the “vmware_server_username” option

Related options:

  • vmware_server_host

  • vmware_server_username

vmware_api_retry_count
Type:

integer

Default:

10

Minimum Value:

1

The number of VMware API retries.

This configuration option specifies the number of times the VMware ESX/VC server API must be retried upon connection related issues or server API call overload. It is not possible to specify ‘retry forever’.

Possible Values:

  • Any positive integer value

Related options:

  • None

vmware_task_poll_interval
Type:

integer

Default:

5

Minimum Value:

1

Interval in seconds used for polling remote tasks invoked on VMware ESX/VC server.

This configuration option takes in the sleep time in seconds for polling an on-going async task as part of the VMWare ESX/VC server API call.

Possible Values:

  • Any positive integer value

Related options:

  • None

vmware_store_image_dir
Type:

string

Default:

/openstack_glance

The directory where the glance images will be stored in the datastore.

This configuration option specifies the path to the directory where the glance images will be stored in the VMware datastore. If this option is not set, the default directory where the glance images are stored is openstack_glance.

Possible Values:

  • Any string that is a valid path to a directory

Related options:

  • None

vmware_insecure
Type:

boolean

Default:

False

Set verification of the ESX/vCenter server certificate.

This configuration option takes a boolean value to determine whether or not to verify the ESX/vCenter server certificate. If this option is set to True, the ESX/vCenter server certificate is not verified. If this option is set to False, then the default CA truststore is used for verification.

This option is ignored if the “vmware_ca_file” option is set. In that case, the ESX/vCenter server certificate will then be verified using the file specified using the “vmware_ca_file” option .

Possible Values:

  • True

  • False

Related options:

  • vmware_ca_file

Deprecated Variations

Group

Name

glance_store

vmware_api_insecure
vmware_ca_file
Type:

string

Default:

/etc/ssl/certs/ca-certificates.crt

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

Absolute path to the CA bundle file.

This configuration option enables the operator to use a custom Cerificate Authority File to verify the ESX/vCenter certificate.

If this option is set, the “vmware_insecure” option will be ignored and the CA file specified will be used to authenticate the ESX/vCenter server certificate and establish a secure connection to the server.

Possible Values:

  • Any string that is a valid absolute path to a CA file

Related options:

  • vmware_insecure

vmware_datastores
Type:

multi-valued

Default:

''

The datastores where the image can be stored.

This configuration option specifies the datastores where the image can be stored in the VMWare store backend. This option may be specified multiple times for specifying multiple datastores. The datastore name should be specified after its datacenter path, separated by “:”. An optional weight may be given after the datastore name, separated again by “:” to specify the priority. Thus, the required format becomes <datacenter_path>:<datastore_name>:<optional_weight>.

When adding an image, the datastore with highest weight will be selected, unless there is not enough free space available in cases where the image size is already known. If no weight is given, it is assumed to be zero and the directory will be considered for selection last. If multiple datastores have the same weight, then the one with the most free space available is selected.

Possible Values:

  • Any string of the format: <datacenter_path>:<datastore_name>:<optional_weight>

Related options:

  • None

healthcheck

path
Type:

string

Default:

/healthcheck

The path to respond to healtcheck requests on.

Warning

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

detailed
Type:

boolean

Default:

False

Show more detailed information as part of the response. Security note: Enabling this option may expose sensitive details about the service being monitored. Be sure to verify that it will not violate your security policies.

backends
Type:

list

Default:

[]

Additional backends that can perform health checks and report that information back as part of a request.

allowed_source_ranges
Type:

list

Default:

[]

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

ignore_proxied_requests
Type:

boolean

Default:

False

Ignore requests with proxy headers.

disable_by_file_path
Type:

string

Default:

<None>

Check the presence of a file to determine if an application is running on a port. Used by DisableByFileHealthcheck plugin.

disable_by_file_paths
Type:

list

Default:

[]

Check the presence of a file based on a port to determine if an application is running on a port. Expects a “port:path” list of strings. Used by DisableByFilesPortsHealthcheck plugin.

image_format

container_formats
Type:

list

Default:

['ami', 'ari', 'aki', 'bare', 'ovf', 'ova', 'docker', 'compressed']

Supported values for the ‘container_format’ image attribute

Deprecated Variations

Group

Name

DEFAULT

container_formats
disk_formats
Type:

list

Default:

['ami', 'ari', 'aki', 'vhd', 'vhdx', 'vmdk', 'raw', 'qcow2', 'vdi', 'iso', 'ploop']

Supported values for the ‘disk_format’ image attribute

Deprecated Variations

Group

Name

DEFAULT

disk_formats
vmdk_allowed_types
Type:

list

Default:

['streamOptimized', 'monolithicSparse']

A list of strings describing allowed VMDK ‘create-type’ subformats that will be allowed. This is recommended to only include single-file-with-sparse-header variants to avoid potential host file exposure due to processing named extents. If this list is empty, then no VDMK image types allowed. Note that this is currently only checked during image conversion (if enabled), and limits the types of VMDK images we will convert from.

key_manager

backend
Type:

string

Default:

barbican

Specify the key manager implementation. Options are “barbican” and “vault”. Default is “barbican”. Will support the values earlier set using [key_manager]/api_class for some time.

Deprecated Variations

Group

Name

key_manager

api_class
auth_type
Type:

string

Default:

<None>

The type of authentication credential to create. Possible values are ‘token’, ‘password’, ‘keystone_token’, and ‘keystone_password’. Required if no context is passed to the credential factory.

token
Type:

string

Default:

<None>

Token for authentication. Required for ‘token’ and ‘keystone_token’ auth_type if no context is passed to the credential factory.

username
Type:

string

Default:

<None>

Username for authentication. Required for ‘password’ auth_type. Optional for the ‘keystone_password’ auth_type.

password
Type:

string

Default:

<None>

Password for authentication. Required for ‘password’ and ‘keystone_password’ auth_type.

auth_url
Type:

string

Default:

<None>

Use this endpoint to connect to Keystone.

user_id
Type:

string

Default:

<None>

User ID for authentication. Optional for ‘keystone_token’ and ‘keystone_password’ auth_type.

user_domain_id
Type:

string

Default:

<None>

User’s domain ID for authentication. Optional for ‘keystone_token’ and ‘keystone_password’ auth_type.

user_domain_name
Type:

string

Default:

<None>

User’s domain name for authentication. Optional for ‘keystone_token’ and ‘keystone_password’ auth_type.

trust_id
Type:

string

Default:

<None>

Trust ID for trust scoping. Optional for ‘keystone_token’ and ‘keystone_password’ auth_type.

domain_id
Type:

string

Default:

<None>

Domain ID for domain scoping. Optional for ‘keystone_token’ and ‘keystone_password’ auth_type.

domain_name
Type:

string

Default:

<None>

Domain name for domain scoping. Optional for ‘keystone_token’ and ‘keystone_password’ auth_type.

project_id
Type:

string

Default:

<None>

Project ID for project scoping. Optional for ‘keystone_token’ and ‘keystone_password’ auth_type.

project_name
Type:

string

Default:

<None>

Project name for project scoping. Optional for ‘keystone_token’ and ‘keystone_password’ auth_type.

project_domain_id
Type:

string

Default:

<None>

Project’s domain ID for project. Optional for ‘keystone_token’ and ‘keystone_password’ auth_type.

project_domain_name
Type:

string

Default:

<None>

Project’s domain name for project. Optional for ‘keystone_token’ and ‘keystone_password’ auth_type.

reauthenticate
Type:

boolean

Default:

True

Allow fetching a new token if the current one is going to expire. Optional for ‘keystone_token’ and ‘keystone_password’ auth_type.

keystone_authtoken

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 Identity API endpoint.

interface
Type:

string

Default:

internal

Interface to use for the Identity API endpoint. Valid values are “public”, “internal” (default) or “admin”.

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.

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:

True

(Optional) Use the advanced (eventlet safe) memcached client pool.

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.

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.

service_type
Type:

string

Default:

<None>

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.

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

oslo_concurrency

disable_process_locking
Type:

boolean

Default:

False

Enables or disables inter-process locks.

lock_path
Type:

string

Default:

<None>

Directory to use for lock files. For security, the specified directory should only be writable by the user running the processes that need locking. Defaults to environment variable OSLO_LOCK_PATH. If external locks are used, a lock path must be set.

oslo_limit

endpoint_id
Type:

string

Default:

<None>

The service’s endpoint id which is registered in Keystone.

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_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>

ID of the trust to use as a trustee use

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

oslo_limit

user-name

oslo_limit

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:

<None>

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:

<None>

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.

version
Type:

string

Default:

<None>

Minimum Major API version within a given Major API version for endpoint URL discovery. Mutually exclusive with min_version and max_version

min_version
Type:

string

Default:

<None>

The minimum major version of a given API, intended to be used as the lower bound of a range with max_version. Mutually exclusive with version. If min_version is given with no max_version it is as if max version is “latest”.

max_version
Type:

string

Default:

<None>

The maximum major version of a given API, intended to be used as the upper bound of a range with min_version. Mutually exclusive with version.

connect_retries
Type:

integer

Default:

<None>

The maximum number of retries that should be attempted for connection errors.

connect_retry_delay
Type:

floating point

Default:

<None>

Delay (in seconds) between two retries for connection errors. If not set, exponential retry starting with 0.5 seconds up to a maximum of 60 seconds is used.

status_code_retries
Type:

integer

Default:

<None>

The maximum number of retries that should be attempted for retriable HTTP status codes.

status_code_retry_delay
Type:

floating point

Default:

<None>

Delay (in seconds) between two retries for retriable status codes. If not set, exponential retry starting with 0.5 seconds up to a maximum of 60 seconds is used.

retriable_status_codes
Type:

list

Default:

<None>

List of retriable HTTP status codes that should be retried. If not set default to [503]

oslo_messaging_amqp

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

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.

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’

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

oslo_messaging_kafka

kafka_max_fetch_bytes
Type:

integer

Default:

1048576

Max fetch bytes of Kafka consumer

kafka_consumer_timeout
Type:

floating point

Default:

1.0

Default timeout(s) for Kafka consumers

pool_size
Type:

integer

Default:

10

Pool Size for Kafka Consumers

Warning

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

Reason:

Driver no longer uses connection pool.

conn_pool_min_size
Type:

integer

Default:

2

The pool size limit for connections expiration policy

Warning

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

Reason:

Driver no longer uses connection pool.

conn_pool_ttl
Type:

integer

Default:

1200

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

Warning

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

Reason:

Driver no longer uses connection pool.

consumer_group
Type:

string

Default:

oslo_messaging_consumer

Group id for Kafka consumer. Consumers in one group will coordinate message consumption

producer_batch_timeout
Type:

floating point

Default:

0.0

Upper bound on the delay for KafkaProducer batching in seconds

producer_batch_size
Type:

integer

Default:

16384

Size of batch for the producer async send

compression_codec
Type:

string

Default:

none

Valid Values:

none, gzip, snappy, lz4, zstd

The compression codec for all data generated by the producer. If not set, compression will not be used. Note that the allowed values of this depend on the kafka version

enable_auto_commit
Type:

boolean

Default:

False

Enable asynchronous consumer commits

max_poll_records
Type:

integer

Default:

500

The maximum number of records returned in a poll call

security_protocol
Type:

string

Default:

PLAINTEXT

Valid Values:

PLAINTEXT, SASL_PLAINTEXT, SSL, SASL_SSL

Protocol used to communicate with brokers

sasl_mechanism
Type:

string

Default:

PLAIN

Mechanism when security protocol is SASL

ssl_cafile
Type:

string

Default:

''

CA certificate PEM file used to verify the server certificate

ssl_client_cert_file
Type:

string

Default:

''

Client certificate PEM file used for authentication.

ssl_client_key_file
Type:

string

Default:

''

Client key PEM file used for authentication.

ssl_client_key_password
Type:

string

Default:

''

Client key password file used for authentication.

oslo_messaging_notifications

driver
Type:

multi-valued

Default:

''

The Drivers(s) to handle sending notifications. Possible values are messaging, messagingv2, routing, log, test, noop

Deprecated Variations

Group

Name

DEFAULT

notification_driver
transport_url
Type:

string

Default:

<None>

A URL representing the messaging driver to use for notifications. If not set, we fall back to the same configuration used for RPC.

Deprecated Variations

Group

Name

DEFAULT

notification_transport_url
topics
Type:

list

Default:

['notifications']

AMQP topic used for OpenStack notifications.

Deprecated Variations

Group

Name

rpc_notifier2

topics

DEFAULT

notification_topics
retry
Type:

integer

Default:

-1

The maximum number of attempts to re-send a notification message which failed to be delivered due to a recoverable error. 0 - No retry, -1 - indefinite

oslo_messaging_rabbit

amqp_durable_queues
Type:

boolean

Default:

False

Use durable queues in AMQP. If rabbit_quorum_queue is enabled, queues will be durable and this value will be ignored.

amqp_auto_delete
Type:

boolean

Default:

False

Auto-delete queues in AMQP.

Deprecated Variations

Group

Name

DEFAULT

amqp_auto_delete
ssl
Type:

boolean

Default:

False

Connect over SSL.

Deprecated Variations

Group

Name

oslo_messaging_rabbit

rabbit_use_ssl
ssl_version
Type:

string

Default:

''

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

Deprecated Variations

Group

Name

oslo_messaging_rabbit

kombu_ssl_version
ssl_key_file
Type:

string

Default:

''

SSL key file (valid only if SSL enabled).

Deprecated Variations

Group

Name

oslo_messaging_rabbit

kombu_ssl_keyfile
ssl_cert_file
Type:

string

Default:

''

SSL cert file (valid only if SSL enabled).

Deprecated Variations

Group

Name

oslo_messaging_rabbit

kombu_ssl_certfile
ssl_ca_file
Type:

string

Default:

''

SSL certification authority file (valid only if SSL enabled).

Deprecated Variations

Group

Name

oslo_messaging_rabbit

kombu_ssl_ca_certs
ssl_enforce_fips_mode
Type:

boolean

Default:

False

Global toggle for enforcing the OpenSSL FIPS mode. This feature requires Python support. This is available in Python 3.9 in all environments and may have been backported to older Python versions on select environments. If the Python executable used does not support OpenSSL FIPS mode, an exception will be raised.

heartbeat_in_pthread
Type:

boolean

Default:

False

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.

kombu_reconnect_delay
Type:

floating point

Default:

1.0

Minimum Value:

0.0

Maximum Value:

4.5

How long to wait (in seconds) before reconnecting in response to an AMQP consumer cancel notification.

Deprecated Variations

Group

Name

DEFAULT

kombu_reconnect_delay
kombu_compression
Type:

string

Default:

<None>

EXPERIMENTAL: Possible values are: gzip, bz2. If not set compression will not be used. This option may not be available in future versions.

kombu_missing_consumer_retry_timeout
Type:

integer

Default:

60

How long to wait a missing client before abandoning to send it its replies. This value should not be longer than rpc_response_timeout.

Deprecated Variations

Group

Name

oslo_messaging_rabbit

kombu_reconnect_timeout
kombu_failover_strategy
Type:

string

Default:

round-robin

Valid Values:

round-robin, shuffle

Determines how the next RabbitMQ node is chosen in case the one we are currently connected to becomes unavailable. Takes effect only if more than one RabbitMQ node is provided in config.

rabbit_login_method
Type:

string

Default:

AMQPLAIN

Valid Values:

PLAIN, AMQPLAIN, EXTERNAL, RABBIT-CR-DEMO

The RabbitMQ login method.

Deprecated Variations

Group

Name

DEFAULT

rabbit_login_method
rabbit_retry_interval
Type:

integer

Default:

1

How frequently to retry connecting with RabbitMQ.

rabbit_retry_backoff
Type:

integer

Default:

2

How long to backoff for between retries when connecting to RabbitMQ.

Deprecated Variations

Group

Name

DEFAULT

rabbit_retry_backoff
rabbit_interval_max
Type:

integer

Default:

30

Maximum interval of RabbitMQ connection retries. Default is 30 seconds.

rabbit_ha_queues
Type:

boolean

Default:

False

Try to use HA queues in RabbitMQ (x-ha-policy: all). If you change this option, you must wipe the RabbitMQ database. In RabbitMQ 3.0, queue mirroring is no longer controlled by the x-ha-policy argument when declaring a queue. If you just want to make sure that all queues (except those with auto-generated names) are mirrored across all nodes, run: “rabbitmqctl set_policy HA ‘^(?!amq.).*’ ‘{“ha-mode”: “all”}’ “

Deprecated Variations

Group

Name

DEFAULT

rabbit_ha_queues
rabbit_quorum_queue
Type:

boolean

Default:

False

Use quorum queues in RabbitMQ (x-queue-type: quorum). The quorum queue is a modern queue type for RabbitMQ implementing a durable, replicated FIFO queue based on the Raft consensus algorithm. It is available as of RabbitMQ 3.8.0. If set this option will conflict with the HA queues (rabbit_ha_queues) aka mirrored queues, in other words the HA queues should be disabled. Quorum queues are also durable by default so the amqp_durable_queues option is ignored when this option is enabled.

rabbit_transient_quorum_queue
Type:

boolean

Default:

False

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

rabbit_quorum_delivery_limit
Type:

integer

Default:

0

Each time a message is redelivered to a consumer, a counter is incremented. Once the redelivery count exceeds the delivery limit the message gets dropped or dead-lettered (if a DLX exchange has been configured) Used only when rabbit_quorum_queue is enabled, Default 0 which means dont set a limit.

rabbit_quorum_max_memory_length
Type:

integer

Default:

0

By default all messages are maintained in memory if a quorum queue grows in length it can put memory pressure on a cluster. This option can limit the number of messages in the quorum queue. Used only when rabbit_quorum_queue is enabled, Default 0 which means dont set a limit.

Deprecated Variations

Group

Name

oslo_messaging_rabbit

rabbit_quroum_max_memory_length
rabbit_quorum_max_memory_bytes
Type:

integer

Default:

0

By default all messages are maintained in memory if a quorum queue grows in length it can put memory pressure on a cluster. This option can limit the number of memory bytes used by the quorum queue. Used only when rabbit_quorum_queue is enabled, Default 0 which means dont set a limit.

Deprecated Variations

Group

Name

oslo_messaging_rabbit

rabbit_quroum_max_memory_bytes
rabbit_transient_queues_ttl
Type:

integer

Default:

1800

Minimum Value:

0

Positive integer representing duration in seconds for queue TTL (x-expires). Queues which are unused for the duration of the TTL are automatically deleted. The parameter affects only reply and fanout queues. Setting 0 as value will disable the x-expires. If doing so, make sure you have a rabbitmq policy to delete the queues or you deployment will create an infinite number of queue over time.

rabbit_qos_prefetch_count
Type:

integer

Default:

0

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

heartbeat_timeout_threshold
Type:

integer

Default:

60

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

heartbeat_rate
Type:

integer

Default:

3

How often times during the heartbeat_timeout_threshold we check the heartbeat.

direct_mandatory_flag
Type:

boolean

Default:

True

(DEPRECATED) Enable/Disable the RabbitMQ mandatory flag for direct send. The direct send is used as reply, so the MessageUndeliverable exception is raised in case the client queue does not exist.MessageUndeliverable exception will be used to loop for a timeout to lets a chance to sender to recover.This flag is deprecated and it will not be possible to deactivate this functionality anymore

Warning

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

Reason:

Mandatory flag no longer deactivable.

enable_cancel_on_failover
Type:

boolean

Default:

False

Enable x-cancel-on-ha-failover flag so that rabbitmq server will cancel and notify consumerswhen queue is down

use_queue_manager
Type:

boolean

Default:

False

Should we use consistant queue names or random ones

hostname
Type:

string

Default:

np0038449674

Hostname used by queue manager

processname
Type:

string

Default:

sphinx-build

Process name used by queue manager

rabbit_stream_fanout
Type:

boolean

Default:

False

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

oslo_middleware

enable_proxy_headers_parsing
Type:

boolean

Default:

False

Whether the application is behind a proxy or not. This determines if the middleware should parse the headers or not.

oslo_policy

enforce_scope
Type:

boolean

Default:

True

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

enforce_new_defaults
Type:

boolean

Default:

True

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

policy_file
Type:

string

Default:

policy.yaml

The relative or absolute path of a file that maps roles to permissions for a given service. Relative paths must be specified in relation to the configuration file setting this option.

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

oslo_reports

log_dir
Type:

string

Default:

<None>

Path to a log directory where to create a file

file_event_handler
Type:

string

Default:

<None>

The path to a file to watch for changes to trigger the reports, instead of signals. Setting this option disables the signal trigger for the reports. If application is running as a WSGI application it is recommended to use this instead of signals.

file_event_handler_interval
Type:

integer

Default:

1

How many seconds to wait between polls when file_event_handler is set

paste_deploy

flavor
Type:

string

Default:

keystone

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

Deployment flavor to use in the server application pipeline.

Provide a string value representing the appropriate deployment flavor used in the server application pipeline. This is typically the partial name of a pipeline in the paste configuration file with the service name removed.

For example, if your paste section name in the paste configuration file is [pipeline:glance-api-keystone], set flavor to keystone.

Possible values:

  • String value representing a partial pipeline name.

Related Options:

  • config_file

config_file
Type:

string

Default:

glance-api-paste.ini

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

Name of the paste configuration file.

Provide a string value representing the name of the paste configuration file to use for configuring pipelines for server application deployments.

NOTES:

  • Provide the name or the path relative to the glance directory for the paste configuration file and not the absolute path.

  • The sample paste configuration file shipped with Glance need not be edited in most cases as it comes with ready-made pipelines for all common deployment flavors.

If no value is specified for this option, the paste.ini file with the prefix of the corresponding Glance service’s configuration file name will be searched for in the known configuration directories. (For example, if this option is missing from or has no value set in glance-api.conf, the service will look for a file named glance-api-paste.ini.) If the paste configuration file is not found, the service will not start.

Possible values:

  • A string value representing the name of the paste configuration file.

Related Options:

  • flavor

profiler

enabled
Type:

boolean

Default:

False

Enable the profiling for all services on this node.

Default value is False (fully disable the profiling feature).

Possible values:

  • True: Enables the feature

  • False: Disables the feature. The profiling cannot be started via this project operations. If the profiling is triggered by another project, this project part will be empty.

Deprecated Variations

Group

Name

profiler

profiler_enabled
trace_sqlalchemy
Type:

boolean

Default:

False

Enable SQL requests profiling in services.

Default value is False (SQL requests won’t be traced).

Possible values:

  • True: Enables SQL requests profiling. Each SQL query will be part of the trace and can the be analyzed by how much time was spent for that.

  • False: Disables SQL requests profiling. The spent time is only shown on a higher level of operations. Single SQL queries cannot be analyzed this way.

trace_requests
Type:

boolean

Default:

False

Enable python requests package profiling.

Supported drivers: jaeger+otlp

Default value is False.

Possible values:

  • True: Enables requests profiling.

  • False: Disables requests profiling.

hmac_keys
Type:

string

Default:

SECRET_KEY

Secret key(s) to use for encrypting context data for performance profiling.

This string value should have the following format: <key1>[,<key2>,…<keyn>], where each key is some random string. A user who triggers the profiling via the REST API has to set one of these keys in the headers of the REST API call to include profiling results of this node for this particular project.

Both “enabled” flag and “hmac_keys” config options should be set to enable profiling. Also, to generate correct profiling information across all services at least one key needs to be consistent between OpenStack projects. This ensures it can be used from client side to generate the trace, containing information from all possible resources.

connection_string
Type:

string

Default:

messaging://

Connection string for a notifier backend.

Default value is messaging:// which sets the notifier to oslo_messaging.

Examples of possible values:

  • messaging:// - use oslo_messaging driver for sending spans.

  • redis://127.0.0.1:6379 - use redis driver for sending spans.

  • mongodb://127.0.0.1:27017 - use mongodb driver for sending spans.

  • elasticsearch://127.0.0.1:9200 - use elasticsearch driver for sending spans.

  • jaeger://127.0.0.1:6831 - use jaeger tracing as driver for sending spans.

es_doc_type
Type:

string

Default:

notification

Document type for notification indexing in elasticsearch.

es_scroll_time
Type:

string

Default:

2m

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

es_scroll_size
Type:

integer

Default:

10000

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

socket_timeout
Type:

floating point

Default:

0.1

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

sentinel_service_name
Type:

string

Default:

mymaster

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

filter_error_trace
Type:

boolean

Default:

False

Enable filter traces that contain error/exception to a separated place.

Default value is set to False.

Possible values:

  • True: Enable filter traces that contain error/exception.

  • False: Disable the filter.

store_type_location_strategy

store_type_preference
Type:

list

Default:

[]

Preference order of storage backends.

Provide a comma separated list of store names in the order in which images should be retrieved from storage backends. These store names must be registered with the stores configuration option.

NOTE: The store_type_preference configuration option is applied only if store_type is chosen as a value for the location_strategy configuration option. An empty list will not change the location order.

Possible values:

  • Empty list

  • Comma separated list of registered store names. Legal values are:

    • file

    • http

    • rbd

    • swift

    • cinder

    • vmware

Related options:

  • location_strategy

  • stores

Warning

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

Reason:

In Bobcat, a new weighing mechanism has been introduced, which makes the location strategy obsolete. This option is scheduled to be removed during the Dalmatian development cycle.

task

task_time_to_live
Type:

integer

Default:

48

Time in hours for which a task lives after, either succeeding or failing

Deprecated Variations

Group

Name

DEFAULT

task_time_to_live
task_executor
Type:

string

Default:

taskflow

Task executor to be used to run task scripts.

Provide a string value representing the executor to use for task executions. By default, TaskFlow executor is used.

TaskFlow helps make task executions easy, consistent, scalable and reliable. It also enables creation of lightweight task objects and/or functions that are combined together into flows in a declarative manner.

Possible values:

  • taskflow

Related Options:

  • None

work_dir
Type:

string

Default:

/work_dir

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

Absolute path to the work directory to use for asynchronous task operations.

The directory set here will be used to operate over images - normally before they are imported in the destination store.

NOTE: When providing a value for work_dir, please make sure that enough space is provided for concurrent tasks to run efficiently without running out of space.

A rough estimation can be done by multiplying the number of max_workers with an average image size (e.g 500MB). The image size estimation should be done based on the average size in your deployment. Note that depending on the tasks running you may need to multiply this number by some factor depending on what the task does. For example, you may want to double the available size if image conversion is enabled. All this being said, remember these are just estimations and you should do them based on the worst case scenario and be prepared to act in case they were wrong.

Possible values:

  • String value representing the absolute path to the working directory

Related Options:

  • None

taskflow_executor

engine_mode
Type:

string

Default:

parallel

Valid Values:

serial, parallel

Set the taskflow engine mode.

Provide a string type value to set the mode in which the taskflow engine would schedule tasks to the workers on the hosts. Based on this mode, the engine executes tasks either in single or multiple threads. The possible values for this configuration option are: serial and parallel. When set to serial, the engine runs all the tasks in a single thread which results in serial execution of tasks. Setting this to parallel makes the engine run tasks in multiple threads. This results in parallel execution of tasks.

Possible values:

  • serial

  • parallel

Related options:

  • max_workers

max_workers
Type:

integer

Default:

10

Minimum Value:

1

Set the number of engine executable tasks.

Provide an integer value to limit the number of workers that can be instantiated on the hosts. In other words, this number defines the number of parallel tasks that can be executed at the same time by the taskflow engine. This value can be greater than one when the engine mode is set to parallel.

Possible values:

  • Integer value greater than or equal to 1

Related options:

  • engine_mode

Deprecated Variations

Group

Name

task

eventlet_executor_pool_size
conversion_format
Type:

string

Default:

raw

Valid Values:

qcow2, raw, vmdk

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

Set the desired image conversion format.

Provide a valid image format to which you want images to be converted before they are stored for consumption by Glance. Appropriate image format conversions are desirable for specific storage backends in order to facilitate efficient handling of bandwidth and usage of the storage infrastructure.

By default, conversion_format is not set and must be set explicitly in the configuration file.

The allowed values for this option are raw, qcow2 and vmdk. The raw format is the unstructured disk format and should be chosen when RBD or Ceph storage backends are used for image storage. qcow2 is supported by the QEMU emulator that expands dynamically and supports Copy on Write. The vmdk is another common disk format supported by many common virtual machine monitors like VMWare Workstation.

Possible values:

  • qcow2

  • raw

  • vmdk

Related options:

  • disk_formats

vault

root_token_id
Type:

string

Default:

<None>

root token for vault

approle_role_id
Type:

string

Default:

<None>

AppRole role_id for authentication with vault

approle_secret_id
Type:

string

Default:

<None>

AppRole secret_id for authentication with vault

kv_mountpoint
Type:

string

Default:

secret

Mountpoint of KV store in Vault to use, for example: secret

kv_path
Type:

string

Default:

<None>

Path relative to root of KV store in Vault to use.

kv_version
Type:

integer

Default:

2

Version of KV store in Vault to use, for example: 2

vault_url
Type:

string

Default:

http://127.0.0.1:8200

Use this endpoint to connect to Vault, for example: “http://127.0.0.1:8200”

ssl_ca_crt_file
Type:

string

Default:

<None>

Absolute path to ca cert file

use_ssl
Type:

boolean

Default:

False

SSL Enabled/Disabled

namespace
Type:

string

Default:

<None>

Vault Namespace to use for all requests to Vault. Vault Namespaces feature is available only in Vault Enterprise

wsgi

task_pool_threads
Type:

integer

Default:

16

Minimum Value:

1

The number of threads (per worker process) in the pool for processing asynchronous tasks. This controls how many asynchronous tasks (i.e. for image interoperable import) each worker can run at a time. If this is too large, you may have increased memory footprint per worker and/or you may overwhelm other system resources such as disk or outbound network bandwidth. If this is too small, image import requests will have to wait until a thread becomes available to begin processing.

python_interpreter
Type:

string

Default:

<None>

Path to the python interpreter to use when spawning external processes. If left unspecified, this will be sys.executable, which should be the same interpreter running Glance itself. However, in some situations (for example, uwsgi) sys.executable may not actually point to a python interpreter and an alternative value must be set.