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.. _senlin-common:

.. list-table:: Description of Common configuration options
   :header-rows: 1
   :class: config-ref-table

   * - Configuration option = Default value
     - Description
   * - **[DEFAULT]**
     -
   * - ``batch_interval`` = ``3``
     - (Integer) Seconds to pause between scheduling two consecutive batches of node actions.
   * - ``cloud_backend`` = ``openstack``
     - (String) Default cloud backend to use.
   * - ``default_action_timeout`` = ``3600``
     - (Integer) Timeout in seconds for actions.
   * - ``default_region_name`` = ``None``
     - (String) Default region name used to get services endpoints.
   * - ``engine_life_check_timeout`` = ``2``
     - (Integer) RPC timeout for the engine liveness check that is used for cluster locking.
   * - ``environment_dir`` = ``/etc/senlin/environments``
     - (String) The directory to search for environment files.
   * - ``executor_thread_pool_size`` = ``64``
     - (Integer) Size of executor thread pool.
   * - ``fatal_deprecations`` = ``False``
     - (Boolean) Enables or disables fatal status of deprecations.
   * - ``host`` = ``localhost``
     - (String) Name of the engine node. This can be an opaque identifier. It is not necessarily a hostname, FQDN, or IP address.
   * - ``lock_retry_interval`` = ``10``
     - (Integer) Number of seconds between lock retries.
   * - ``lock_retry_times`` = ``3``
     - (Integer) Number of times trying to grab a lock.
   * - ``max_actions_per_batch`` = ``0``
     - (Integer) Maximum number of node actions that each engine worker can schedule consecutively per batch. 0 means no limit.
   * - ``max_clusters_per_project`` = ``100``
     - (Integer) Maximum number of clusters any one project may have active at one time.
   * - ``max_nodes_per_cluster`` = ``1000``
     - (Integer) Maximum nodes allowed per top-level cluster.
   * - ``max_response_size`` = ``524288``
     - (Integer) Maximum raw byte size of data from web response.
   * - ``name_unique`` = ``False``
     - (Boolean) Flag to indicate whether to enforce unique names for Senlin objects belonging to the same project.
   * - ``num_engine_workers`` = ``1``
     - (Integer) Number of senlin-engine processes to fork and run.
   * - ``periodic_fuzzy_delay`` = ``10``
     - (Integer) Range of seconds to randomly delay when starting the periodic task scheduler to reduce stampeding. (Disable by setting to 0)
   * - ``periodic_interval`` = ``60``
     - (Integer) Seconds between running periodic tasks.
   * - ``periodic_interval_max`` = ``120``
     - (Integer) Seconds between periodic tasks to be called
   * - ``publish_errors`` = ``False``
     - (Boolean) Enables or disables publication of error events.
   * - ``use_router_proxy`` = ``True``
     - (Boolean) Use ROUTER remote proxy.
   * - **[health_manager]**
     -
   * - ``nova_control_exchange`` = ``nova``
     - (String) Exchange name for nova notifications
   * - **[oslo_versionedobjects]**
     -
   * - ``fatal_exception_format_errors`` = ``False``
     - (Boolean) Make exception message format errors fatal
   * - **[webhook]**
     -
   * - ``host`` = ``None``
     - (String) Address for invoking webhooks. It is useful for cases where proxies are used for triggering webhooks. Default to the hostname of the API node.
   * - ``port`` = ``8778``
     - (Port number) The port on which a webhook will be invoked. Useful when service is running behind a proxy.