Configuration Options¶

Senlin uses oslo.config to define and manage configuration options to allow the deployer to control many aspects of the service API and the service engine.

cloud_backend¶

Type:	string
Default:	openstack
Valid Values:	openstack, openstack_test

Default cloud backend to use.

host¶

Type:	host address
Default:	ubuntu-bionic-ovh-gra1-0004961954

Name of the engine node. This can be an opaque identifier. It is not necessarily a hostname, FQDN or IP address.

periodic_interval¶

Type:	integer
Default:	60

Seconds between running periodic tasks.

periodic_interval_max¶

Type:	integer
Default:	120

Maximum seconds between periodic tasks to be called.

check_interval_max¶

Type:	integer
Default:	3600

Maximum seconds between cluster check to be called.

health_check_interval_min¶

Type:	integer
Default:	60

Minimum seconds between health check to be called.

periodic_fuzzy_delay¶

Type:	integer
Default:	10

Range of seconds to randomly delay when starting the periodic task scheduler to reduce stampeding. (Disable by setting to 0)

num_engine_workers¶

Type:	integer
Default:	1

Number of senlin-engine processes to fork and run.

environment_dir¶

Type:	string
Default:	/etc/senlin/environments

The directory to search for environment files.

max_nodes_per_cluster¶

Type:	integer
Default:	1000

Maximum nodes allowed per top-level cluster.

max_clusters_per_project¶

Type:	integer
Default:	100

Maximum number of clusters any one project may have active at one time.

default_action_timeout¶

Type:	integer
Default:	3600

Timeout in seconds for actions.

max_actions_per_batch¶

Type:	integer
Default:	0

Maximum number of node actions that each engine worker can schedule consecutively per batch. 0 means no limit.

batch_interval¶

Type:	integer
Default:	3

Seconds to pause between scheduling two consecutive batches of node actions.

lock_retry_times¶

Type:	integer
Default:	3

Number of times trying to grab a lock.

lock_retry_interval¶

Type:	integer
Default:	10

Number of seconds between lock retries.

database_retry_limit¶

Type:	integer
Default:	10

Number of times retrying a failed operation on the database.

database_retry_interval¶

Type:	integer
Default:	0.3

Initial number of seconds between database retries.

database_max_retry_interval¶

Type:	integer
Default:	2

Maximum number of seconds between database retries.

engine_life_check_timeout¶

Type:	integer
Default:	2

RPC timeout for the engine liveness check that is used for cluster locking.

name_unique¶

Type:	boolean
Default:	false

Flag to indicate whether to enforce unique names for Senlin objects belonging to the same project.

service_down_time¶

Type:	integer
Default:	60

Maximum time since last check-in for a service to be considered up.

scheduler_thread_pool_size¶

Type:	integer
Default:	1000

Maximum number of threads to use for scheduler.

health_manager_thread_pool_size¶

Type:	integer
Default:	1000

Maximum number of threads to use for health manager.

default_region_name¶

Type:	string
Default:	<None>

Default region name used to get services endpoints.

max_response_size¶

Type:	integer
Default:	524288

Maximum raw byte size of data from web response.

event_dispatchers¶

Type:	multi-valued
Default:	database

Event dispatchers to enable.

auth_url¶

Type:	string
Default:	''

Complete public identity V3 API endpoint.

service_username¶

Type:	string
Default:	senlin

Senlin service user name.

service_password¶

Type:	string
Default:	''

Password specified for the Senlin service user.

service_project_name¶

Type:	string
Default:	service

Name of the service project.

service_user_domain¶

Type:	string
Default:	Default

Name of the domain for the service user.

service_project_domain¶

Type:	string
Default:	Default

Name of the domain for the service project.

priority¶

Type:	string
Default:	info
Valid Values:	critical, error, warning, info, debug

Lowest event priorities to be dispatched.

exclude_derived_actions¶

Type:	boolean
Default:	true

Exclude derived actions from events dumping.

nova_control_exchange¶

Type:	string
Default:	nova

Exchange name for nova notifications.

heat_control_exchange¶

Type:	string
Default:	heat

Exchange name for heat notifications.

enabled_endpoints¶

Type:	multi-valued
Default:	nova
Default:	heat

Notification endpoints to enable.

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.

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.

host¶

Type:	string
Default:	<None>

The address for notifying and triggering receivers. It is useful for case Senlin API service is running behind a proxy.

Deprecated Variations¶

Group	Name
webhook	host

port¶

Type:	port number
Default:	8778
Minimum Value:	0
Maximum Value:	65535

The port for notifying and triggering receivers. It is useful for case Senlin API service is running behind a proxy.

Deprecated Variations¶

Group	Name
webhook	port

max_message_size¶

Type:	integer
Default:	65535

The max size(bytes) of message can be posted to receiver queue.

senlin_api_revision¶

Type:	string
Default:	1.0

Senlin API revision.

senlin_engine_revision¶

Type:	string
Default:	1.0

Senlin engine revision.

bind_host¶

Type:	ip address
Default:	0.0.0.0

Address to bind the server. Useful when selecting a particular network interface.

bind_port¶

Type:	port number
Default:	8778
Minimum Value:	0
Maximum Value:	65535

The port on which the server will listen.

backlog¶

Type:	integer
Default:	4096

Number of backlog requests to configure the socket with.

cert_file¶

Type:	string
Default:	<None>

Location of the SSL certificate file to use for SSL mode.

key_file¶

Type:	string
Default:	<None>

Location of the SSL key file to use for enabling SSL mode.

workers¶

Type:	integer
Default:	0
Minimum Value:	0

Number of workers for Senlin service.

max_header_line¶

Type:	integer
Default:	16384

Maximum line size of message headers to be accepted. max_header_line may need to be increased when using large tokens (typically those generated by the Keystone v3 API with big service catalogs).

tcp_keepidle¶

Type:	integer
Default:	600

The value for the socket option TCP_KEEPIDLE. This is the time in seconds that the connection must be idle before TCP starts sending keepalive probes.

api_paste_config¶

Type:	string
Default:	api-paste.ini

The API paste config file to use.

Deprecated Variations¶

Group	Name
paste_deploy	api_paste_config

wsgi_keep_alive¶

Type:	boolean
Default:	true

If false, closes the client socket explicitly.

Deprecated Variations¶

Group	Name
eventlet_opts	wsgi_keep_alive

client_socket_timeout¶

Type:	integer
Default:	900

Timeout for client connections’ socket operations. If an incoming connection is idle for this number of seconds it will be closed. A value of ‘0’ indicates waiting forever.

Deprecated Variations¶

Group	Name
eventlet_opts	client_socket_timeout

max_json_body_size¶

Type:	integer
Default:	1048576

Maximum raw byte size of JSON request body.

Deprecated Variations¶

Group	Name
DEFAULT	max_json_body_size

auth_type¶

Type:	unknown type
Default:	<None>

Authentication type to load

Deprecated Variations¶

Group	Name
zaqar	auth_plugin

auth_section¶

Type:	unknown type
Default:	<None>

Config Section from which to load plugin specific options

auth_url¶

Type:	unknown type
Default:	<None>

Authentication URL

system_scope¶

Type:	unknown type
Default:	<None>

Scope for system operations

domain_id¶

Type:	unknown type
Default:	<None>

Domain ID to scope to

domain_name¶

Type:	unknown type
Default:	<None>

Domain name to scope to

project_id¶

Type:	unknown type
Default:	<None>

Project ID to scope to

Deprecated Variations¶

Group	Name
zaqar	tenant-id
zaqar	tenant_id

project_name¶

Type:	unknown type
Default:	<None>

Project name to scope to

Deprecated Variations¶

Group	Name
zaqar	tenant-name
zaqar	tenant_name

project_domain_id¶

Type:	unknown type
Default:	<None>

Domain ID containing project

project_domain_name¶

Type:	unknown type
Default:	<None>

Domain name containing project

trust_id¶

Type:	unknown type
Default:	<None>

Trust ID

default_domain_id¶

Type:	unknown type
Default:	<None>

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

default_domain_name¶

Type:	unknown type
Default:	<None>

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

user_id¶

Type:	unknown type
Default:	<None>

User id

username¶

Type:	unknown type
Default:	<None>

Username

Deprecated Variations¶

Group	Name
zaqar	user-name
zaqar	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