Configuration Options

The following is an overview of all available configuration options in Nova. For a sample configuration file, refer to Sample Configuration File.

DEFAULT

listen_ip

Type:

string

Default:

127.0.0.1

IP address on which the DEEPaaS API will listen.

The DEEPaaS API service listens on this IP address for incoming requests.

listen_port

Type:

port number

Default:

5000

Minimum Value:

0

Maximum Value:

65535

Port on which the DEEPaaS API will listen.

The DEEPaaS API service listens on this port number for incoming requests.

base_path

Type:

string

Default:

''

Base path for the API. This is useful when the API is served behind a reverse proxy that is not at the root of the domain. For example, if the API is served at https://example.com/deepaas, then the base path should be set to /deepaas. Defaults to the root of the domain.

train_endpoint

Type:

boolean

Default:

True

Specify whether DEEPaaS should provide a train endpoint (default: True).

predict_endpoint

Type:

boolean

Default:

True

Specify whether DEEPaaS should provide a predict endpoint (default: True).

debug_endpoint

Type:

boolean

Default:

False

Enable debug endpoint. If set we will provide all the information that you print to the standard output and error (i.e. stdout and stderr) through the “/debug” endpoint. Default is to not provide this information. This will not provide logging information about the API itself.

doc_endpoint

Type:

boolean

Default:

True

Enable documentation endpoint. If set we will provide the documentation through the “/api” endpoint. Default is to provide this information.

workers

Type:

integer

Default:

1

Specify the number of workers to spawn. If using a CPU you probably want to increase this number, if using a GPU probably you want to leave it to 1. (defaults to 1)

client_max_size

Type:

integer

Default:

0

Minimum Value:

0

Client’s maximum size in a request, in bytes. If a POST request exceeds this value, it raises an HTTPRequestEntityTooLarge exception. If set to 0, no file size limit will be enforced.

warm

Type:

boolean

Default:

True

Pre-warm the modules (eg. load models, do preliminary checks, etc). You might want to disable this option if DEEPaaS is loading more than one module because you risk getting out of memory errors.

model_name

Type:

string

Default:

''

Specify the model to be used. If not specified, DEEPaaS will serve all the models that are available. If specified, DEEPaaS will serve only the specified model. You can also use the DEEPAAS_V2_MODEL environment variable.

WARNING: Serving multiple models is deprecated and will be removed in the future,

therefore it is strongly suggested that you specify the model you want to or that you ensure that only one model is available.

Logging options

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.