| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| --- |
| |
| - name: core |
| description: ~ |
| options: |
| - name: dags_folder |
| description: | |
| The folder where your airflow pipelines live, most likely a |
| subfolder in a code repository. This path must be absolute. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "{AIRFLOW_HOME}/dags" |
| - name: hostname_callable |
| description: | |
| Hostname by providing a path to a callable, which will resolve the hostname. |
| The format is "package.function". |
| |
| For example, default value "socket.getfqdn" means that result from getfqdn() of "socket" |
| package will be used as hostname. |
| |
| No argument should be required in the function specified. |
| If using IP address as hostname is preferred, use value ``airflow.utils.net.get_host_ip_address`` |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "socket.getfqdn" |
| - name: default_timezone |
| description: | |
| Default timezone in case supplied date times are naive |
| can be utc (default), system, or any IANA timezone string (e.g. Europe/Amsterdam) |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "utc" |
| - name: executor |
| description: | |
| The executor class that airflow should use. Choices include |
| ``SequentialExecutor``, ``LocalExecutor``, ``CeleryExecutor``, ``DaskExecutor``, |
| ``KubernetesExecutor``, ``CeleryKubernetesExecutor`` or the |
| full import path to the class when using a custom executor. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "SequentialExecutor" |
| - name: sql_alchemy_conn |
| description: | |
| The SqlAlchemy connection string to the metadata database. |
| SqlAlchemy supports many different database engines. |
| More information here: |
| http://airflow.apache.org/docs/apache-airflow/stable/howto/set-up-database.html#database-uri |
| version_added: ~ |
| type: string |
| sensitive: true |
| example: ~ |
| default: "sqlite:///{AIRFLOW_HOME}/airflow.db" |
| - name: sql_engine_encoding |
| description: | |
| The encoding for the databases |
| version_added: 1.10.1 |
| type: string |
| example: ~ |
| default: "utf-8" |
| - name: sql_engine_collation_for_ids |
| description: | |
| Collation for ``dag_id``, ``task_id``, ``key`` columns in case they have different encoding. |
| This is particularly useful in case of mysql with utf8mb4 encoding because |
| primary keys for XCom table has too big size and ``sql_engine_collation_for_ids`` should |
| be set to ``utf8mb3_general_ci``. |
| version_added: 2.0.0 |
| type: string |
| example: ~ |
| default: ~ |
| - name: sql_alchemy_pool_enabled |
| description: | |
| If SqlAlchemy should pool database connections. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "True" |
| - name: sql_alchemy_pool_size |
| description: | |
| The SqlAlchemy pool size is the maximum number of database connections |
| in the pool. 0 indicates no limit. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "5" |
| - name: sql_alchemy_max_overflow |
| description: | |
| The maximum overflow size of the pool. |
| When the number of checked-out connections reaches the size set in pool_size, |
| additional connections will be returned up to this limit. |
| When those additional connections are returned to the pool, they are disconnected and discarded. |
| It follows then that the total number of simultaneous connections the pool will allow |
| is pool_size + max_overflow, |
| and the total number of "sleeping" connections the pool will allow is pool_size. |
| max_overflow can be set to ``-1`` to indicate no overflow limit; |
| no limit will be placed on the total number of concurrent connections. Defaults to ``10``. |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: "10" |
| - name: sql_alchemy_pool_recycle |
| description: | |
| The SqlAlchemy pool recycle is the number of seconds a connection |
| can be idle in the pool before it is invalidated. This config does |
| not apply to sqlite. If the number of DB connections is ever exceeded, |
| a lower config value will allow the system to recover faster. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "1800" |
| - name: sql_alchemy_pool_pre_ping |
| description: | |
| Check connection at the start of each connection pool checkout. |
| Typically, this is a simple statement like "SELECT 1". |
| More information here: |
| https://docs.sqlalchemy.org/en/13/core/pooling.html#disconnect-handling-pessimistic |
| version_added: 1.10.6 |
| type: string |
| example: ~ |
| default: "True" |
| - name: sql_alchemy_schema |
| description: | |
| The schema to use for the metadata database. |
| SqlAlchemy supports databases with the concept of multiple schemas. |
| version_added: 1.10.3 |
| type: string |
| example: ~ |
| default: "" |
| - name: sql_alchemy_connect_args |
| description: | |
| Import path for connect args in SqlAlchemy. Defaults to an empty dict. |
| This is useful when you want to configure db engine args that SqlAlchemy won't parse |
| in connection string. |
| See https://docs.sqlalchemy.org/en/13/core/engines.html#sqlalchemy.create_engine.params.connect_args |
| version_added: 1.10.11 |
| type: string |
| example: ~ |
| default: ~ |
| - name: parallelism |
| description: | |
| This defines the maximum number of task instances that can run concurrently in Airflow |
| regardless of scheduler count and worker count. Generally, this value is reflective of |
| the number of task instances with the running state in the metadata database. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "32" |
| - name: max_active_tasks_per_dag |
| description: | |
| The maximum number of task instances allowed to run concurrently in each DAG. To calculate |
| the number of tasks that is running concurrently for a DAG, add up the number of running |
| tasks for all DAG runs of the DAG. This is configurable at the DAG level with ``max_active_tasks``, |
| which is defaulted as ``max_active_tasks_per_dag``. |
| |
| An example scenario when this would be useful is when you want to stop a new dag with an early |
| start date from stealing all the executor slots in a cluster. |
| version_added: 2.2.0 |
| type: string |
| example: ~ |
| default: "16" |
| - name: dags_are_paused_at_creation |
| description: | |
| Are DAGs paused by default at creation |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "True" |
| - name: max_active_runs_per_dag |
| description: | |
| The maximum number of active DAG runs per DAG. The scheduler will not create more DAG runs |
| if it reaches the limit. This is configurable at the DAG level with ``max_active_runs``, |
| which is defaulted as ``max_active_runs_per_dag``. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "16" |
| - name: load_examples |
| description: | |
| Whether to load the DAG examples that ship with Airflow. It's good to |
| get started, but you probably want to set this to ``False`` in a production |
| environment |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "True" |
| - name: load_default_connections |
| description: | |
| Whether to load the default connections that ship with Airflow. It's good to |
| get started, but you probably want to set this to ``False`` in a production |
| environment |
| version_added: 1.10.10 |
| type: string |
| example: ~ |
| default: "True" |
| - name: plugins_folder |
| description: | |
| Path to the folder containing Airflow plugins |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "{AIRFLOW_HOME}/plugins" |
| - name: execute_tasks_new_python_interpreter |
| description: | |
| Should tasks be executed via forking of the parent process ("False", |
| the speedier option) or by spawning a new python process ("True" slow, |
| but means plugin changes picked up by tasks straight away) |
| default: "False" |
| example: ~ |
| version_added: "2.0.0" |
| see_also: ":ref:`plugins:loading`" |
| type: boolean |
| - name: fernet_key |
| description: | |
| Secret key to save connection passwords in the db |
| version_added: ~ |
| type: string |
| sensitive: true |
| example: ~ |
| default: "{FERNET_KEY}" |
| - name: donot_pickle |
| description: | |
| Whether to disable pickling dags |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "True" |
| - name: dagbag_import_timeout |
| description: | |
| How long before timing out a python file import |
| version_added: ~ |
| type: float |
| example: ~ |
| default: "30.0" |
| - name: dagbag_import_error_tracebacks |
| description: | |
| Should a traceback be shown in the UI for dagbag import errors, |
| instead of just the exception message |
| version_added: 2.0.0 |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: dagbag_import_error_traceback_depth |
| description: | |
| If tracebacks are shown, how many entries from the traceback should be shown |
| version_added: 2.0.0 |
| type: integer |
| example: ~ |
| default: "2" |
| - name: dag_file_processor_timeout |
| description: | |
| How long before timing out a DagFileProcessor, which processes a dag file |
| version_added: 1.10.6 |
| type: string |
| example: ~ |
| default: "50" |
| - name: task_runner |
| description: | |
| The class to use for running task instances in a subprocess. |
| Choices include StandardTaskRunner, CgroupTaskRunner or the full import path to the class |
| when using a custom task runner. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "StandardTaskRunner" |
| - name: default_impersonation |
| description: | |
| If set, tasks without a ``run_as_user`` argument will be run with this user |
| Can be used to de-elevate a sudo user running Airflow when executing tasks |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: security |
| description: | |
| What security module to use (for example kerberos) |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: unit_test_mode |
| description: | |
| Turn unit test mode on (overwrites many configuration options with test |
| values at runtime) |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| - name: enable_xcom_pickling |
| description: | |
| Whether to enable pickling for xcom (note that this is insecure and allows for |
| RCE exploits). |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| see_also: "https://docs.python.org/3/library/pickle.html#comparison-with-json" |
| - name: killed_task_cleanup_time |
| description: | |
| When a task is killed forcefully, this is the amount of time in seconds that |
| it has to cleanup after it is sent a SIGTERM, before it is SIGKILLED |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "60" |
| - name: dag_run_conf_overrides_params |
| description: | |
| Whether to override params with dag_run.conf. If you pass some key-value pairs |
| through ``airflow dags backfill -c`` or |
| ``airflow dags trigger -c``, the key-value pairs will override the existing ones in params. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "True" |
| - name: dag_discovery_safe_mode |
| description: | |
| When discovering DAGs, ignore any files that don't contain the strings ``DAG`` and ``airflow``. |
| version_added: 1.10.3 |
| type: string |
| example: ~ |
| default: "True" |
| - name: default_task_retries |
| description: | |
| The number of retries each task is going to have by default. Can be overridden at dag or task level. |
| version_added: 1.10.6 |
| type: string |
| example: ~ |
| default: "0" |
| - name: min_serialized_dag_update_interval |
| description: | |
| Updating serialized DAG can not be faster than a minimum interval to reduce database write rate. |
| version_added: 1.10.7 |
| type: string |
| example: ~ |
| default: "30" |
| - name: min_serialized_dag_fetch_interval |
| description: | |
| Fetching serialized DAG can not be faster than a minimum interval to reduce database |
| read rate. This config controls when your DAGs are updated in the Webserver |
| version_added: 1.10.12 |
| type: string |
| example: ~ |
| default: "10" |
| - name: store_dag_code |
| description: | |
| Whether to persist DAG files code in DB. |
| If set to True, Webserver reads file contents from DB instead of |
| trying to access files in a DAG folder. |
| (Default is ``True``) |
| version_added: 1.10.10 |
| type: string |
| example: "True" |
| default: "True" |
| - name: max_num_rendered_ti_fields_per_task |
| description: | |
| Maximum number of Rendered Task Instance Fields (Template Fields) per task to store |
| in the Database. |
| All the template_fields for each of Task Instance are stored in the Database. |
| Keeping this number small may cause an error when you try to view ``Rendered`` tab in |
| TaskInstance view for older tasks. |
| version_added: 2.0.0 |
| type: integer |
| example: ~ |
| default: "30" |
| - name: check_slas |
| description: | |
| On each dagrun check against defined SLAs |
| version_added: 1.10.8 |
| type: string |
| example: ~ |
| default: "True" |
| - name: xcom_backend |
| description: | |
| Path to custom XCom class that will be used to store and resolve operators results |
| version_added: 1.10.12 |
| type: string |
| example: "path.to.CustomXCom" |
| default: "airflow.models.xcom.BaseXCom" |
| - name: lazy_load_plugins |
| description: | |
| By default Airflow plugins are lazily-loaded (only loaded when required). Set it to ``False``, |
| if you want to load plugins whenever 'airflow' is invoked via cli or loaded from module. |
| version_added: 2.0.0 |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: lazy_discover_providers |
| description: | |
| By default Airflow providers are lazily-discovered (discovery and imports happen only when required). |
| Set it to False, if you want to discover providers whenever 'airflow' is invoked via cli or |
| loaded from module. |
| version_added: 2.0.0 |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: max_db_retries |
| description: | |
| Number of times the code should be retried in case of DB Operational Errors. |
| Not all transactions will be retried as it can cause undesired state. |
| Currently it is only used in ``DagFileProcessor.process_file`` to retry ``dagbag.sync_to_db``. |
| version_added: ~ |
| type: integer |
| example: ~ |
| default: "3" |
| - name: hide_sensitive_var_conn_fields |
| description: | |
| Hide sensitive Variables or Connection extra json keys from UI and task logs when set to True |
| |
| (Connection passwords are always hidden in logs) |
| version_added: ~ |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: sensitive_var_conn_names |
| description: | |
| A comma-separated list of extra sensitive keywords to look for in variables names or connection's |
| extra JSON. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: default_pool_task_slot_count |
| description: | |
| Task Slot counts for ``default_pool``. This setting would not have any effect in an existing |
| deployment where the ``default_pool`` is already created. For existing deployments, users can |
| change the number of slots using Webserver, API or the CLI |
| version_added: 2.2.0 |
| type: string |
| example: ~ |
| default: "128" |
| |
| - name: logging |
| description: ~ |
| options: |
| - name: base_log_folder |
| description: | |
| The folder where airflow should store its log files |
| This path must be absolute |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "{AIRFLOW_HOME}/logs" |
| - name: remote_logging |
| description: | |
| Airflow can store logs remotely in AWS S3, Google Cloud Storage or Elastic Search. |
| Set this to True if you want to enable remote logging. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| - name: remote_log_conn_id |
| description: | |
| Users must supply an Airflow connection id that provides access to the storage |
| location. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: google_key_path |
| description: | |
| Path to Google Credential JSON file. If omitted, authorization based on `the Application Default |
| Credentials |
| <https://cloud.google.com/docs/authentication/production#finding_credentials_automatically>`__ will |
| be used. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: remote_base_log_folder |
| description: | |
| Storage bucket URL for remote logging |
| S3 buckets should start with "s3://" |
| Cloudwatch log groups should start with "cloudwatch://" |
| GCS buckets should start with "gs://" |
| WASB buckets should start with "wasb" just to help Airflow select correct handler |
| Stackdriver logs should start with "stackdriver://" |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: encrypt_s3_logs |
| description: | |
| Use server-side encryption for logs stored in S3 |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| - name: logging_level |
| description: | |
| Logging level. |
| |
| Supported values: ``CRITICAL``, ``ERROR``, ``WARNING``, ``INFO``, ``DEBUG``. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "INFO" |
| - name: fab_logging_level |
| description: | |
| Logging level for Flask-appbuilder UI. |
| |
| Supported values: ``CRITICAL``, ``ERROR``, ``WARNING``, ``INFO``, ``DEBUG``. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "WARN" |
| - name: logging_config_class |
| description: | |
| Logging class |
| Specify the class that will specify the logging configuration |
| This class has to be on the python classpath |
| version_added: ~ |
| type: string |
| example: "my.path.default_local_settings.LOGGING_CONFIG" |
| default: "" |
| - name: colored_console_log |
| description: | |
| Flag to enable/disable Colored logs in Console |
| Colour the logs when the controlling terminal is a TTY. |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: "True" |
| - name: colored_log_format |
| description: | |
| Log format for when Colored logs is enabled |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: >- |
| [%%(blue)s%%(asctime)s%%(reset)s] {{%%(blue)s%%(filename)s:%%(reset)s%%(lineno)d}} |
| %%(log_color)s%%(levelname)s%%(reset)s - %%(log_color)s%%(message)s%%(reset)s |
| - name: colored_formatter_class |
| description: ~ |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: "airflow.utils.log.colored_log.CustomTTYColoredFormatter" |
| - name: log_format |
| description: | |
| Format of Log line |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "[%%(asctime)s] {{%%(filename)s:%%(lineno)d}} %%(levelname)s - %%(message)s" |
| - name: simple_log_format |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "%%(asctime)s %%(levelname)s - %%(message)s" |
| - name: task_log_prefix_template |
| description: | |
| Specify prefix pattern like mentioned below with stream handler TaskHandlerWithCustomFormatter |
| version_added: ~ |
| type: string |
| example: "{{ti.dag_id}}-{{ti.task_id}}-{{execution_date}}-{{try_number}}" |
| default: "" |
| - name: log_filename_template |
| description: | |
| Formatting for how airflow generates file names/paths for each task run. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "{{{{ ti.dag_id }}}}/{{{{ ti.task_id }}}}/{{{{ ts }}}}/{{{{ try_number }}}}.log" |
| - name: log_processor_filename_template |
| description: | |
| Formatting for how airflow generates file names for log |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "{{{{ filename }}}}.log" |
| - name: dag_processor_manager_log_location |
| description: | |
| full path of dag_processor_manager logfile |
| version_added: 1.10.2 |
| type: string |
| example: ~ |
| default: "{AIRFLOW_HOME}/logs/dag_processor_manager/dag_processor_manager.log" |
| - name: task_log_reader |
| description: | |
| Name of handler to read task instance logs. |
| Defaults to use ``task`` handler. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "task" |
| - name: extra_loggers |
| description: | |
| A comma\-separated list of third-party logger names that will be configured to print messages to |
| consoles\. |
| version_added: ~ |
| type: string |
| example: "connexion,sqlalchemy" |
| default: "" |
| - name: metrics |
| description: | |
| StatsD (https://github.com/etsy/statsd) integration settings. |
| options: |
| - name: statsd_on |
| description: | |
| Enables sending metrics to StatsD. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| - name: statsd_host |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "localhost" |
| - name: statsd_port |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "8125" |
| - name: statsd_prefix |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "airflow" |
| - name: statsd_allow_list |
| description: | |
| If you want to avoid sending all the available metrics to StatsD, |
| you can configure an allow list of prefixes (comma separated) to send only the metrics that |
| start with the elements of the list (e.g: "scheduler,executor,dagrun") |
| version_added: 1.10.6 |
| type: string |
| example: ~ |
| default: "" |
| - name: stat_name_handler |
| description: | |
| A function that validate the statsd stat name, apply changes to the stat name if necessary and return |
| the transformed stat name. |
| |
| The function should have the following signature: |
| def func_name(stat_name: str) -> str: |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: statsd_datadog_enabled |
| description: | |
| To enable datadog integration to send airflow metrics. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| - name: statsd_datadog_tags |
| description: | |
| List of datadog tags attached to all metrics(e.g: key1:value1,key2:value2) |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: statsd_custom_client_path |
| description: | |
| If you want to utilise your own custom Statsd client set the relevant |
| module path below. |
| Note: The module path must exist on your PYTHONPATH for Airflow to pick it up |
| version_added: ~ |
| type: string |
| example: ~ |
| default: ~ |
| - name: secrets |
| description: ~ |
| options: |
| - name: backend |
| description: | |
| Full class name of secrets backend to enable (will precede env vars and metastore in search path) |
| version_added: 1.10.10 |
| type: string |
| example: "airflow.providers.amazon.aws.secrets.systems_manager.SystemsManagerParameterStoreBackend" |
| default: "" |
| - name: backend_kwargs |
| description: | |
| The backend_kwargs param is loaded into a dictionary and passed to __init__ of secrets backend class. |
| See documentation for the secrets backend you are using. JSON is expected. |
| Example for AWS Systems Manager ParameterStore: |
| ``{{"connections_prefix": "/airflow/connections", "profile_name": "default"}}`` |
| version_added: 1.10.10 |
| type: string |
| example: ~ |
| default: "" |
| - name: cli |
| description: ~ |
| options: |
| - name: api_client |
| description: | |
| In what way should the cli access the API. The LocalClient will use the |
| database directly, while the json_client will use the api running on the |
| webserver |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "airflow.api.client.local_client" |
| - name: endpoint_url |
| description: | |
| If you set web_server_url_prefix, do NOT forget to append it here, ex: |
| ``endpoint_url = http://localhost:8080/myroot`` |
| So api will look like: ``http://localhost:8080/myroot/api/experimental/...`` |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "http://localhost:8080" |
| - name: debug |
| description: ~ |
| options: |
| - name: fail_fast |
| description: | |
| Used only with ``DebugExecutor``. If set to ``True`` DAG will fail with first |
| failed task. Helpful for debugging purposes. |
| version_added: 1.10.8 |
| type: string |
| example: ~ |
| default: "False" |
| - name: api |
| description: ~ |
| options: |
| - name: enable_experimental_api |
| description: | |
| Enables the deprecated experimental API. Please note that these APIs do not have access control. |
| The authenticated user has full access. |
| |
| .. warning:: |
| |
| This `Experimental REST API <https://airflow.readthedocs.io/en/latest/rest-api-ref.html>`__ is |
| deprecated since version 2.0. Please consider using |
| `the Stable REST API <https://airflow.readthedocs.io/en/latest/stable-rest-api-ref.html>`__. |
| For more information on migration, see |
| `UPDATING.md <https://github.com/apache/airflow/blob/main/UPDATING.md>`_ |
| version_added: 2.0.0 |
| type: boolean |
| example: ~ |
| default: "False" |
| - name: auth_backend |
| description: | |
| How to authenticate users of the API. See |
| https://airflow.apache.org/docs/apache-airflow/stable/security.html for possible values. |
| ("airflow.api.auth.backend.default" allows all requests for historic reasons) |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "airflow.api.auth.backend.deny_all" |
| - name: maximum_page_limit |
| description: | |
| Used to set the maximum page limit for API requests |
| version_added: ~ |
| type: integer |
| example: ~ |
| default: "100" |
| - name: fallback_page_limit |
| description: | |
| Used to set the default page limit when limit is zero. A default limit |
| of 100 is set on OpenApi spec. However, this particular default limit |
| only work when limit is set equal to zero(0) from API requests. |
| If no limit is supplied, the OpenApi spec default is used. |
| type: integer |
| example: ~ |
| version_added: ~ |
| default: "100" |
| - name: google_oauth2_audience |
| description: The intended audience for JWT token credentials used for authorization. |
| This value must match on the client and server sides. |
| If empty, audience will not be tested. |
| type: string |
| version_added: ~ |
| example: project-id-random-value.apps.googleusercontent.com |
| default: "" |
| - name: google_key_path |
| description: | |
| Path to Google Cloud Service Account key file (JSON). If omitted, authorization based on |
| `the Application Default Credentials |
| <https://cloud.google.com/docs/authentication/production#finding_credentials_automatically>`__ will |
| be used. |
| type: string |
| version_added: ~ |
| example: /files/service-account-json |
| default: "" |
| - name: access_control_allow_headers |
| description: | |
| Used in response to a preflight request to indicate which HTTP |
| headers can be used when making the actual request. This header is |
| the server side response to the browser's |
| Access-Control-Request-Headers header. |
| type: string |
| version_added: ~ |
| example: ~ |
| default: "" |
| - name: access_control_allow_methods |
| description: | |
| Specifies the method or methods allowed when accessing the resource. |
| type: string |
| version_added: ~ |
| example: ~ |
| default: "" |
| - name: access_control_allow_origin |
| description: | |
| Indicates whether the response can be shared with requesting code from the given origin. |
| type: string |
| version_added: ~ |
| example: ~ |
| default: "" |
| - name: lineage |
| description: ~ |
| options: |
| - name: backend |
| description: | |
| what lineage backend to use |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: atlas |
| description: ~ |
| options: |
| - name: sasl_enabled |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| - name: host |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: port |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "21000" |
| - name: username |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: password |
| description: ~ |
| version_added: ~ |
| type: string |
| sensitive: true |
| example: ~ |
| default: "" |
| - name: operators |
| description: ~ |
| options: |
| - name: default_owner |
| description: | |
| The default owner assigned to each new operator, unless |
| provided explicitly or passed via ``default_args`` |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "airflow" |
| - name: default_cpus |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "1" |
| - name: default_ram |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "512" |
| - name: default_disk |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "512" |
| - name: default_gpus |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "0" |
| - name: default_queue |
| description: | |
| Default queue that tasks get assigned to and that worker listen on. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "default" |
| - name: allow_illegal_arguments |
| description: | |
| Is allowed to pass additional/unused arguments (args, kwargs) to the BaseOperator operator. |
| If set to False, an exception will be thrown, otherwise only the console message will be displayed. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| - name: hive |
| description: ~ |
| options: |
| - name: default_hive_mapred_queue |
| description: | |
| Default mapreduce queue for HiveOperator tasks |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: mapred_job_name_template |
| description: | |
| Template for mapred_job_name in HiveOperator, supports the following named parameters |
| hostname, dag_id, task_id, execution_date |
| version_added: ~ |
| type: string |
| example: ~ |
| default: ~ |
| - name: webserver |
| description: ~ |
| options: |
| - name: base_url |
| description: | |
| The base url of your website as airflow cannot guess what domain or |
| cname you are using. This is used in automated emails that |
| airflow sends to point links to the right web server |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "http://localhost:8080" |
| - name: default_ui_timezone |
| description: | |
| Default timezone to display all dates in the UI, can be UTC, system, or |
| any IANA timezone string (e.g. Europe/Amsterdam). If left empty the |
| default value of core/default_timezone will be used |
| version_added: 1.10.10 |
| type: string |
| example: "America/New_York" |
| # Default is left as UTC for now so the date's don't "suddenly" change on upgrade |
| default: "UTC" |
| - name: web_server_host |
| description: | |
| The ip specified when starting the web server |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "0.0.0.0" |
| - name: web_server_port |
| description: | |
| The port on which to run the web server |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "8080" |
| - name: web_server_ssl_cert |
| description: | |
| Paths to the SSL certificate and key for the web server. When both are |
| provided SSL will be enabled. This does not change the web server port. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: web_server_ssl_key |
| description: | |
| Paths to the SSL certificate and key for the web server. When both are |
| provided SSL will be enabled. This does not change the web server port. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: web_server_master_timeout |
| description: | |
| Number of seconds the webserver waits before killing gunicorn master that doesn't respond |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "120" |
| - name: web_server_worker_timeout |
| description: | |
| Number of seconds the gunicorn webserver waits before timing out on a worker |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "120" |
| - name: worker_refresh_batch_size |
| description: | |
| Number of workers to refresh at a time. When set to 0, worker refresh is |
| disabled. When nonzero, airflow periodically refreshes webserver workers by |
| bringing up new ones and killing old ones. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "1" |
| - name: worker_refresh_interval |
| description: | |
| Number of seconds to wait before refreshing a batch of workers. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "6000" |
| - name: reload_on_plugin_change |
| description: | |
| If set to True, Airflow will track files in plugins_folder directory. When it detects changes, |
| then reload the gunicorn. |
| version_added: 1.10.11 |
| type: boolean |
| example: ~ |
| default: "False" |
| - name: secret_key |
| description: | |
| Secret key used to run your flask app. It should be as random as possible. However, when running |
| more than 1 instances of webserver, make sure all of them use the same ``secret_key`` otherwise |
| one of them will error with "CSRF session token is missing". |
| version_added: ~ |
| type: string |
| sensitive: true |
| example: ~ |
| default: "{SECRET_KEY}" |
| - name: workers |
| description: | |
| Number of workers to run the Gunicorn web server |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "4" |
| - name: worker_class |
| description: | |
| The worker class gunicorn should use. Choices include |
| sync (default), eventlet, gevent |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "sync" |
| - name: access_logfile |
| description: | |
| Log files for the gunicorn webserver. '-' means log to stderr. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "-" |
| - name: error_logfile |
| description: | |
| Log files for the gunicorn webserver. '-' means log to stderr. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "-" |
| - name: access_logformat |
| description: | |
| Access log format for gunicorn webserver. |
| default format is %%(h)s %%(l)s %%(u)s %%(t)s "%%(r)s" %%(s)s %%(b)s "%%(f)s" "%%(a)s" |
| documentation - https://docs.gunicorn.org/en/stable/settings.html#access-log-format |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: expose_config |
| description: | |
| Expose the configuration file in the web server |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| - name: expose_hostname |
| description: | |
| Expose hostname in the web server |
| version_added: 1.10.8 |
| type: string |
| example: ~ |
| default: "True" |
| - name: expose_stacktrace |
| description: | |
| Expose stacktrace in the web server |
| version_added: 1.10.8 |
| type: string |
| example: ~ |
| default: "True" |
| - name: dag_default_view |
| description: | |
| Default DAG view. Valid values are: ``tree``, ``graph``, ``duration``, ``gantt``, ``landing_times`` |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "tree" |
| - name: dag_orientation |
| description: | |
| Default DAG orientation. Valid values are: |
| ``LR`` (Left->Right), ``TB`` (Top->Bottom), ``RL`` (Right->Left), ``BT`` (Bottom->Top) |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "LR" |
| - name: log_fetch_timeout_sec |
| description: | |
| The amount of time (in secs) webserver will wait for initial handshake |
| while fetching logs from other worker machine |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "5" |
| - name: log_fetch_delay_sec |
| description: | |
| Time interval (in secs) to wait before next log fetching. |
| version_added: 1.10.8 |
| type: integer |
| example: ~ |
| default: "2" |
| - name: log_auto_tailing_offset |
| description: | |
| Distance away from page bottom to enable auto tailing. |
| version_added: 1.10.8 |
| type: integer |
| example: ~ |
| default: "30" |
| - name: log_animation_speed |
| description: | |
| Animation speed for auto tailing log display. |
| version_added: 1.10.8 |
| type: integer |
| example: ~ |
| default: "1000" |
| - name: hide_paused_dags_by_default |
| description: | |
| By default, the webserver shows paused DAGs. Flip this to hide paused |
| DAGs by default |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| - name: page_size |
| description: | |
| Consistent page size across all listing views in the UI |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "100" |
| - name: navbar_color |
| description: | |
| Define the color of navigation bar |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "#fff" |
| - name: default_dag_run_display_number |
| description: | |
| Default dagrun to show in UI |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "25" |
| - name: enable_proxy_fix |
| description: | |
| Enable werkzeug ``ProxyFix`` middleware for reverse proxy |
| version_added: 1.10.1 |
| type: boolean |
| example: ~ |
| default: "False" |
| - name: proxy_fix_x_for |
| description: | |
| Number of values to trust for ``X-Forwarded-For``. |
| More info: https://werkzeug.palletsprojects.com/en/0.16.x/middleware/proxy_fix/ |
| version_added: 1.10.7 |
| type: integer |
| example: ~ |
| default: "1" |
| - name: proxy_fix_x_proto |
| description: | |
| Number of values to trust for ``X-Forwarded-Proto`` |
| version_added: 1.10.7 |
| type: integer |
| example: ~ |
| default: "1" |
| - name: proxy_fix_x_host |
| description: | |
| Number of values to trust for ``X-Forwarded-Host`` |
| version_added: 1.10.7 |
| type: integer |
| example: ~ |
| default: "1" |
| - name: proxy_fix_x_port |
| description: | |
| Number of values to trust for ``X-Forwarded-Port`` |
| version_added: 1.10.7 |
| type: integer |
| example: ~ |
| default: "1" |
| - name: proxy_fix_x_prefix |
| description: | |
| Number of values to trust for ``X-Forwarded-Prefix`` |
| version_added: 1.10.7 |
| type: integer |
| example: ~ |
| default: "1" |
| - name: cookie_secure |
| description: | |
| Set secure flag on session cookie |
| version_added: 1.10.3 |
| type: string |
| example: ~ |
| default: "False" |
| - name: cookie_samesite |
| description: | |
| Set samesite policy on session cookie |
| version_added: 1.10.3 |
| type: string |
| example: ~ |
| default: "Lax" |
| - name: default_wrap |
| description: | |
| Default setting for wrap toggle on DAG code and TI log views. |
| version_added: 1.10.4 |
| type: boolean |
| example: ~ |
| default: "False" |
| - name: x_frame_enabled |
| description: | |
| Allow the UI to be rendered in a frame |
| version_added: 1.10.8 |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: analytics_tool |
| description: | |
| Send anonymous user activity to your analytics tool |
| choose from google_analytics, segment, or metarouter |
| version_added: ~ |
| type: string |
| example: ~ |
| default: ~ |
| - name: analytics_id |
| description: | |
| Unique ID of your account in the analytics tool |
| version_added: 1.10.5 |
| type: string |
| example: ~ |
| default: ~ |
| - name: show_recent_stats_for_completed_runs |
| description: | |
| 'Recent Tasks' stats will show for old DagRuns if set |
| version_added: ~ |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: update_fab_perms |
| description: | |
| Update FAB permissions and sync security manager roles |
| on webserver startup |
| version_added: 1.10.7 |
| type: string |
| example: ~ |
| default: "True" |
| - name: session_lifetime_minutes |
| description: | |
| The UI cookie lifetime in minutes. User will be logged out from UI after |
| ``session_lifetime_minutes`` of non-activity |
| version_added: 1.10.13 |
| type: integer |
| example: ~ |
| default: "43200" |
| - name: instance_name |
| description: | |
| Sets a custom page title for the DAGs overview page and site title for all pages |
| version_added: 2.1.0 |
| type: string |
| example: ~ |
| default: |
| |
| - name: email |
| description: | |
| Configuration email backend and whether to |
| send email alerts on retry or failure |
| options: |
| - name: email_backend |
| description: Email backend to use |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "airflow.utils.email.send_email_smtp" |
| - name: email_conn_id |
| description: Email connection to use |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "smtp_default" |
| - name: default_email_on_retry |
| description: | |
| Whether email alerts should be sent when a task is retried |
| version_added: ~ |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: default_email_on_failure |
| description: | |
| Whether email alerts should be sent when a task failed |
| version_added: ~ |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: subject_template |
| description: | |
| File that will be used as the template for Email subject (which will be rendered using Jinja2). |
| If not set, Airflow uses a base template. |
| version_added: ~ |
| type: string |
| example: "/path/to/my_subject_template_file" |
| default: ~ |
| see_also: ":doc:`Email Configuration </howto/email-config>`" |
| - name: html_content_template |
| description: | |
| File that will be used as the template for Email content (which will be rendered using Jinja2). |
| If not set, Airflow uses a base template. |
| version_added: ~ |
| type: string |
| example: "/path/to/my_html_content_template_file" |
| default: ~ |
| see_also: ":doc:`Email Configuration </howto/email-config>`" |
| |
| - name: smtp |
| description: | |
| If you want airflow to send emails on retries, failure, and you want to use |
| the airflow.utils.email.send_email_smtp function, you have to configure an |
| smtp server here |
| options: |
| - name: smtp_host |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "localhost" |
| - name: smtp_starttls |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "True" |
| - name: smtp_ssl |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| - name: smtp_user |
| description: ~ |
| version_added: ~ |
| type: string |
| example: "airflow" |
| default: ~ |
| - name: smtp_password |
| description: ~ |
| version_added: ~ |
| type: string |
| sensitive: true |
| example: "airflow" |
| default: ~ |
| - name: smtp_port |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "25" |
| - name: smtp_mail_from |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "airflow@example.com" |
| - name: smtp_timeout |
| description: ~ |
| version_added: ~ |
| type: integer |
| example: ~ |
| default: "30" |
| - name: smtp_retry_limit |
| description: ~ |
| version_added: ~ |
| type: integer |
| example: ~ |
| default: "5" |
| - name: sentry |
| description: | |
| Sentry (https://docs.sentry.io) integration. Here you can supply |
| additional configuration options based on the Python platform. See: |
| https://docs.sentry.io/error-reporting/configuration/?platform=python. |
| Unsupported options: ``integrations``, ``in_app_include``, ``in_app_exclude``, |
| ``ignore_errors``, ``before_breadcrumb``, ``before_send``, ``transport``. |
| options: |
| - name: sentry_on |
| description: Enable error reporting to Sentry |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "false" |
| - name: sentry_dsn |
| description: ~ |
| version_added: 1.10.6 |
| type: string |
| example: ~ |
| default: "" |
| - name: celery_kubernetes_executor |
| description: | |
| This section only applies if you are using the ``CeleryKubernetesExecutor`` in |
| ``[core]`` section above |
| options: |
| - name: kubernetes_queue |
| description: | |
| Define when to send a task to ``KubernetesExecutor`` when using ``CeleryKubernetesExecutor``. |
| When the queue of a task is the value of ``kubernetes_queue`` (default ``kubernetes``), |
| the task is executed via ``KubernetesExecutor``, |
| otherwise via ``CeleryExecutor`` |
| version_added: 2.0.0 |
| type: string |
| example: ~ |
| default: "kubernetes" |
| - name: celery |
| description: | |
| This section only applies if you are using the CeleryExecutor in |
| ``[core]`` section above |
| options: |
| - name: celery_app_name |
| description: | |
| The app name that will be used by celery |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "airflow.executors.celery_executor" |
| - name: worker_concurrency |
| description: | |
| The concurrency that will be used when starting workers with the |
| ``airflow celery worker`` command. This defines the number of task instances that |
| a worker will take, so size up your workers based on the resources on |
| your worker box and the nature of your tasks |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "16" |
| - name: worker_autoscale |
| description: | |
| The maximum and minimum concurrency that will be used when starting workers with the |
| ``airflow celery worker`` command (always keep minimum processes, but grow |
| to maximum if necessary). Note the value should be max_concurrency,min_concurrency |
| Pick these numbers based on resources on worker box and the nature of the task. |
| If autoscale option is available, worker_concurrency will be ignored. |
| http://docs.celeryproject.org/en/latest/reference/celery.bin.worker.html#cmdoption-celery-worker-autoscale |
| version_added: ~ |
| type: string |
| example: 16,12 |
| default: ~ |
| - name: worker_prefetch_multiplier |
| description: | |
| Used to increase the number of tasks that a worker prefetches which can improve performance. |
| The number of processes multiplied by worker_prefetch_multiplier is the number of tasks |
| that are prefetched by a worker. A value greater than 1 can result in tasks being unnecessarily |
| blocked if there are multiple workers and one worker prefetches tasks that sit behind long |
| running tasks while another worker has unutilized processes that are unable to process the already |
| claimed blocked tasks. |
| https://docs.celeryproject.org/en/stable/userguide/optimizing.html#prefetch-limits |
| version_added: ~ |
| type: integer |
| example: "1" |
| default: ~ |
| - name: worker_log_server_port |
| description: | |
| When you start an airflow worker, airflow starts a tiny web server |
| subprocess to serve the workers local log files to the airflow main |
| web server, who then builds pages and sends them to users. This defines |
| the port on which the logs are served. It needs to be unused, and open |
| visible from the main web server to connect into the workers. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "8793" |
| - name: worker_umask |
| description: | |
| Umask that will be used when starting workers with the ``airflow celery worker`` |
| in daemon mode. This control the file-creation mode mask which determines the initial |
| value of file permission bits for newly created files. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "0o077" |
| - name: broker_url |
| description: | |
| The Celery broker URL. Celery supports RabbitMQ, Redis and experimentally |
| a sqlalchemy database. Refer to the Celery documentation for more information. |
| version_added: ~ |
| type: string |
| sensitive: true |
| example: ~ |
| default: "redis://redis:6379/0" |
| - name: result_backend |
| description: | |
| The Celery result_backend. When a job finishes, it needs to update the |
| metadata of the job. Therefore it will post a message on a message bus, |
| or insert it into a database (depending of the backend) |
| This status is used by the scheduler to update the state of the task |
| The use of a database is highly recommended |
| http://docs.celeryproject.org/en/latest/userguide/configuration.html#task-result-backend-settings |
| version_added: ~ |
| type: string |
| sensitive: true |
| example: ~ |
| default: "db+postgresql://postgres:airflow@postgres/airflow" |
| - name: flower_host |
| description: | |
| Celery Flower is a sweet UI for Celery. Airflow has a shortcut to start |
| it ``airflow celery flower``. This defines the IP that Celery Flower runs on |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "0.0.0.0" |
| - name: flower_url_prefix |
| description: | |
| The root URL for Flower |
| version_added: ~ |
| type: string |
| example: "/flower" |
| default: "" |
| - name: flower_port |
| description: | |
| This defines the port that Celery Flower runs on |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "5555" |
| - name: flower_basic_auth |
| description: | |
| Securing Flower with Basic Authentication |
| Accepts user:password pairs separated by a comma |
| version_added: 1.10.2 |
| type: string |
| sensitive: true |
| example: "user1:password1,user2:password2" |
| default: "" |
| - name: sync_parallelism |
| description: | |
| How many processes CeleryExecutor uses to sync task state. |
| 0 means to use max(1, number of cores - 1) processes. |
| version_added: 1.10.3 |
| type: string |
| example: ~ |
| default: "0" |
| - name: celery_config_options |
| description: | |
| Import path for celery configuration options |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "airflow.config_templates.default_celery.DEFAULT_CELERY_CONFIG" |
| - name: ssl_active |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "False" |
| - name: ssl_key |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: ssl_cert |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: ssl_cacert |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: pool |
| description: | |
| Celery Pool implementation. |
| Choices include: ``prefork`` (default), ``eventlet``, ``gevent`` or ``solo``. |
| See: |
| https://docs.celeryproject.org/en/latest/userguide/workers.html#concurrency |
| https://docs.celeryproject.org/en/latest/userguide/concurrency/eventlet.html |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: "prefork" |
| - name: operation_timeout |
| description: | |
| The number of seconds to wait before timing out ``send_task_to_executor`` or |
| ``fetch_celery_task_state`` operations. |
| version_added: 1.10.8 |
| type: float |
| example: ~ |
| default: "1.0" |
| - name: task_track_started |
| description: | |
| Celery task will report its status as 'started' when the task is executed by a worker. |
| This is used in Airflow to keep track of the running tasks and if a Scheduler is restarted |
| or run in HA mode, it can adopt the orphan tasks launched by previous SchedulerJob. |
| version_added: 2.0.0 |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: task_adoption_timeout |
| description: | |
| Time in seconds after which Adopted tasks are cleared by CeleryExecutor. This is helpful to clear |
| stalled tasks. |
| version_added: 2.0.0 |
| type: integer |
| example: ~ |
| default: "600" |
| - name: task_publish_max_retries |
| description: | |
| The Maximum number of retries for publishing task messages to the broker when failing |
| due to ``AirflowTaskTimeout`` error before giving up and marking Task as failed. |
| version_added: 2.0.0 |
| type: integer |
| example: ~ |
| default: "3" |
| - name: worker_precheck |
| description: | |
| Worker initialisation check to validate Metadata Database connection |
| version_added: 1.10.1 |
| type: string |
| example: ~ |
| default: "False" |
| - name: celery_broker_transport_options |
| description: | |
| This section is for specifying options which can be passed to the |
| underlying celery broker transport. See: |
| http://docs.celeryproject.org/en/latest/userguide/configuration.html#std:setting-broker_transport_options |
| options: |
| - name: visibility_timeout |
| description: | |
| The visibility timeout defines the number of seconds to wait for the worker |
| to acknowledge the task before the message is redelivered to another worker. |
| Make sure to increase the visibility timeout to match the time of the longest |
| ETA you're planning to use. |
| visibility_timeout is only supported for Redis and SQS celery brokers. |
| See: |
| http://docs.celeryproject.org/en/master/userguide/configuration.html#std:setting-broker_transport_options |
| version_added: ~ |
| type: string |
| example: "21600" |
| default: ~ |
| - name: dask |
| description: | |
| This section only applies if you are using the DaskExecutor in |
| [core] section above |
| options: |
| - name: cluster_address |
| description: | |
| The IP address and port of the Dask cluster's scheduler. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "127.0.0.1:8786" |
| - name: tls_ca |
| description: | |
| TLS/ SSL settings to access a secured Dask scheduler. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: tls_cert |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: tls_key |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: scheduler |
| description: ~ |
| options: |
| - name: job_heartbeat_sec |
| description: | |
| Task instances listen for external kill signal (when you clear tasks |
| from the CLI or the UI), this defines the frequency at which they should |
| listen (in seconds). |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "5" |
| - name: clean_tis_without_dagrun_interval |
| description: | |
| How often (in seconds) to check and tidy up 'running' TaskInstancess |
| that no longer have a matching DagRun |
| version_added: 2.0.0 |
| type: float |
| example: ~ |
| default: "15.0" |
| - name: scheduler_heartbeat_sec |
| description: | |
| The scheduler constantly tries to trigger new tasks (look at the |
| scheduler section in the docs for more information). This defines |
| how often the scheduler should run (in seconds). |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "5" |
| - name: num_runs |
| description: | |
| The number of times to try to schedule each DAG file |
| -1 indicates unlimited number |
| version_added: 1.10.6 |
| type: string |
| example: ~ |
| default: "-1" |
| - name: processor_poll_interval |
| description: | |
| The number of seconds to wait between consecutive DAG file processing |
| version_added: 1.10.6 |
| type: string |
| example: ~ |
| default: "1" |
| - name: min_file_process_interval |
| description: | |
| Number of seconds after which a DAG file is parsed. The DAG file is parsed every |
| ``min_file_process_interval`` number of seconds. Updates to DAGs are reflected after |
| this interval. Keeping this number low will increase CPU usage. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "30" |
| - name: dag_dir_list_interval |
| description: | |
| How often (in seconds) to scan the DAGs directory for new files. Default to 5 minutes. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "300" |
| - name: print_stats_interval |
| description: | |
| How often should stats be printed to the logs. Setting to 0 will disable printing stats |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "30" |
| - name: pool_metrics_interval |
| description: | |
| How often (in seconds) should pool usage stats be sent to statsd (if statsd_on is enabled) |
| version_added: 2.0.0 |
| type: float |
| example: ~ |
| default: "5.0" |
| - name: scheduler_health_check_threshold |
| description: | |
| If the last scheduler heartbeat happened more than scheduler_health_check_threshold |
| ago (in seconds), scheduler is considered unhealthy. |
| This is used by the health check in the "/health" endpoint |
| version_added: 1.10.2 |
| type: string |
| example: ~ |
| default: "30" |
| - name: orphaned_tasks_check_interval |
| description: | |
| How often (in seconds) should the scheduler check for orphaned tasks and SchedulerJobs |
| version_added: 2.0.0 |
| type: float |
| example: ~ |
| default: "300.0" |
| - name: child_process_log_directory |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "{AIRFLOW_HOME}/logs/scheduler" |
| - name: scheduler_zombie_task_threshold |
| description: | |
| Local task jobs periodically heartbeat to the DB. If the job has |
| not heartbeat in this many seconds, the scheduler will mark the |
| associated task instance as failed and will re-schedule the task. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "300" |
| - name: catchup_by_default |
| description: | |
| Turn off scheduler catchup by setting this to ``False``. |
| Default behavior is unchanged and |
| Command Line Backfills still work, but the scheduler |
| will not do scheduler catchup if this is ``False``, |
| however it can be set on a per DAG basis in the |
| DAG definition (catchup) |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "True" |
| - name: max_tis_per_query |
| description: | |
| This changes the batch size of queries in the scheduling main loop. |
| If this is too high, SQL query performance may be impacted by one |
| or more of the following: |
| - reversion to full table scan |
| - complexity of query predicate |
| - excessive locking |
| Additionally, you may hit the maximum allowable query length for your db. |
| Set this to 0 for no limit (not advised) |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "512" |
| - name: use_row_level_locking |
| description: | |
| Should the scheduler issue ``SELECT ... FOR UPDATE`` in relevant queries. |
| If this is set to False then you should not run more than a single |
| scheduler at once |
| version_added: 2.0.0 |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: max_dagruns_to_create_per_loop |
| description: | |
| Max number of DAGs to create DagRuns for per scheduler loop |
| |
| Default: 10 |
| example: ~ |
| version_added: 2.0.0 |
| type: string |
| default: ~ |
| see_also: ":ref:`scheduler:ha:tunables`" |
| - name: max_dagruns_per_loop_to_schedule |
| description: | |
| How many DagRuns should a scheduler examine (and lock) when scheduling |
| and queuing tasks. |
| |
| Default: 20 |
| example: ~ |
| version_added: 2.0.0 |
| type: string |
| default: ~ |
| see_also: ":ref:`scheduler:ha:tunables`" |
| - name: schedule_after_task_execution |
| description: | |
| Should the Task supervisor process perform a "mini scheduler" to attempt to schedule more tasks of the |
| same DAG. Leaving this on will mean tasks in the same DAG execute quicker, but might starve out other |
| dags in some circumstances |
| |
| Default: True |
| example: ~ |
| version_added: 2.0.0 |
| type: boolean |
| default: ~ |
| - name: parsing_processes |
| description: | |
| The scheduler can run multiple processes in parallel to parse dags. |
| This defines how many processes will run. |
| version_added: 1.10.14 |
| type: string |
| example: ~ |
| default: "2" |
| - name: file_parsing_sort_mode |
| description: | |
| One of ``modified_time``, ``random_seeded_by_host`` and ``alphabetical``. |
| The scheduler will list and sort the dag files to decide the parsing order. |
| |
| * ``modified_time``: Sort by modified time of the files. This is useful on large scale to parse the |
| recently modified DAGs first. |
| * ``random_seeded_by_host``: Sort randomly across multiple Schedulers but with same order on the |
| same host. This is useful when running with Scheduler in HA mode where each scheduler can |
| parse different DAG files. |
| * ``alphabetical``: Sort by filename |
| |
| version_added: 2.1.0 |
| type: string |
| example: ~ |
| default: "modified_time" |
| - name: use_job_schedule |
| description: | |
| Turn off scheduler use of cron intervals by setting this to False. |
| DAGs submitted manually in the web UI or with trigger_dag will still run. |
| version_added: 1.10.2 |
| type: string |
| example: ~ |
| default: "True" |
| - name: allow_trigger_in_future |
| description: | |
| Allow externally triggered DagRuns for Execution Dates in the future |
| Only has effect if schedule_interval is set to None in DAG |
| version_added: 1.10.8 |
| type: string |
| example: ~ |
| default: "False" |
| - name: dependency_detector |
| description: DAG dependency detector class to use |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "airflow.serialization.serialized_objects.DependencyDetector" |
| - name: kerberos |
| description: ~ |
| options: |
| - name: ccache |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "/tmp/airflow_krb5_ccache" |
| - name: principal |
| description: | |
| gets augmented with fqdn |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "airflow" |
| - name: reinit_frequency |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "3600" |
| - name: kinit_path |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "kinit" |
| - name: keytab |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "airflow.keytab" |
| - name: github_enterprise |
| description: ~ |
| options: |
| - name: api_rev |
| description: ~ |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "v3" |
| - name: elasticsearch |
| description: ~ |
| options: |
| - name: host |
| description: | |
| Elasticsearch host |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: "" |
| - name: log_id_template |
| description: | |
| Format of the log_id, which is used to query for a given tasks logs |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: "{{dag_id}}-{{task_id}}-{{execution_date}}-{{try_number}}" |
| - name: end_of_log_mark |
| description: | |
| Used to mark the end of a log stream for a task |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: "end_of_log" |
| - name: frontend |
| description: | |
| Qualified URL for an elasticsearch frontend (like Kibana) with a template argument for log_id |
| Code will construct log_id using the log_id template from the argument above. |
| NOTE: scheme will default to https if one is not provided |
| version_added: 1.10.4 |
| type: string |
| example: "http://localhost:5601/app/kibana#/discover\ |
| ?_a=(columns:!(message),query:(language:kuery,query:'log_id: \"{log_id}\"'),sort:!(log.offset,asc))" |
| default: "" |
| - name: write_stdout |
| description: | |
| Write the task logs to the stdout of the worker, rather than the default files |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: "False" |
| - name: json_format |
| description: | |
| Instead of the default log formatter, write the log lines as JSON |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: "False" |
| - name: json_fields |
| description: | |
| Log fields to also attach to the json output, if enabled |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: "asctime, filename, lineno, levelname, message" |
| - name: host_field |
| description: | |
| The field where host name is stored (normally either `host` or `host.name`) |
| version_added: 2.1.1 |
| type: string |
| example: ~ |
| default: "host" |
| - name: offset_field |
| description: | |
| The field where offset is stored (normally either `offset` or `log.offset`) |
| version_added: 2.1.1 |
| type: string |
| example: ~ |
| default: "offset" |
| - name: elasticsearch_configs |
| description: ~ |
| options: |
| - name: use_ssl |
| description: ~ |
| version_added: 1.10.5 |
| type: string |
| example: ~ |
| default: "False" |
| - name: verify_certs |
| description: ~ |
| version_added: 1.10.5 |
| type: string |
| example: ~ |
| default: "True" |
| - name: kubernetes |
| description: ~ |
| options: |
| - name: pod_template_file |
| description: | |
| Path to the YAML pod file that forms the basis for KubernetesExecutor workers. |
| version_added: 1.10.11 |
| type: string |
| example: ~ |
| default: "" |
| see_also: ":ref:`concepts:pod_template_file`" |
| - name: worker_container_repository |
| description: | |
| The repository of the Kubernetes Image for the Worker to Run |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: worker_container_tag |
| description: | |
| The tag of the Kubernetes Image for the Worker to Run |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "" |
| - name: namespace |
| description: | |
| The Kubernetes namespace where airflow workers should be created. Defaults to ``default`` |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "default" |
| - name: delete_worker_pods |
| description: | |
| If True, all worker pods will be deleted upon termination |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "True" |
| - name: delete_worker_pods_on_failure |
| description: | |
| If False (and delete_worker_pods is True), |
| failed worker pods will not be deleted so users can investigate them. |
| This only prevents removal of worker pods where the worker itself failed, |
| not when the task it ran failed. |
| version_added: 1.10.11 |
| type: string |
| example: ~ |
| default: "False" |
| - name: worker_pods_creation_batch_size |
| description: | |
| Number of Kubernetes Worker Pod creation calls per scheduler loop. |
| Note that the current default of "1" will only launch a single pod |
| per-heartbeat. It is HIGHLY recommended that users increase this |
| number to match the tolerance of their kubernetes cluster for |
| better performance. |
| version_added: 1.10.3 |
| type: string |
| example: ~ |
| default: "1" |
| - name: multi_namespace_mode |
| description: | |
| Allows users to launch pods in multiple namespaces. |
| Will require creating a cluster-role for the scheduler |
| version_added: 1.10.12 |
| type: boolean |
| example: ~ |
| default: "False" |
| - name: in_cluster |
| description: | |
| Use the service account kubernetes gives to pods to connect to kubernetes cluster. |
| It's intended for clients that expect to be running inside a pod running on kubernetes. |
| It will raise an exception if called from a process not running in a kubernetes environment. |
| version_added: ~ |
| type: string |
| example: ~ |
| default: "True" |
| - name: cluster_context |
| description: | |
| When running with in_cluster=False change the default cluster_context or config_file |
| options to Kubernetes client. Leave blank these to use default behaviour like ``kubectl`` has. |
| version_added: 1.10.3 |
| type: string |
| example: ~ |
| default: ~ |
| - name: config_file |
| description: | |
| Path to the kubernetes configfile to be used when ``in_cluster`` is set to False |
| version_added: 1.10.3 |
| type: string |
| example: ~ |
| default: ~ |
| - name: kube_client_request_args |
| description: | |
| Keyword parameters to pass while calling a kubernetes client core_v1_api methods |
| from Kubernetes Executor provided as a single line formatted JSON dictionary string. |
| List of supported params are similar for all core_v1_apis, hence a single config |
| variable for all apis. See: |
| https://raw.githubusercontent.com/kubernetes-client/python/41f11a09995efcd0142e25946adc7591431bfb2f/kubernetes/client/api/core_v1_api.py |
| version_added: 1.10.4 |
| type: string |
| example: ~ |
| default: "" |
| - name: delete_option_kwargs |
| description: | |
| Optional keyword arguments to pass to the ``delete_namespaced_pod`` kubernetes client |
| ``core_v1_api`` method when using the Kubernetes Executor. |
| This should be an object and can contain any of the options listed in the ``v1DeleteOptions`` |
| class defined here: |
| https://github.com/kubernetes-client/python/blob/41f11a09995efcd0142e25946adc7591431bfb2f/kubernetes/client/models/v1_delete_options.py#L19 |
| version_added: 1.10.12 |
| type: string |
| example: '{"grace_period_seconds": 10}' |
| default: "" |
| - name: enable_tcp_keepalive |
| description: | |
| Enables TCP keepalive mechanism. This prevents Kubernetes API requests to hang indefinitely |
| when idle connection is time-outed on services like cloud load balancers or firewalls. |
| version_added: ~ |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: tcp_keep_idle |
| description: | |
| When the `enable_tcp_keepalive` option is enabled, TCP probes a connection that has |
| been idle for `tcp_keep_idle` seconds. |
| version_added: ~ |
| type: integer |
| example: ~ |
| default: "120" |
| - name: tcp_keep_intvl |
| description: | |
| When the `enable_tcp_keepalive` option is enabled, if Kubernetes API does not respond |
| to a keepalive probe, TCP retransmits the probe after `tcp_keep_intvl` seconds. |
| version_added: ~ |
| type: integer |
| example: ~ |
| default: "30" |
| - name: tcp_keep_cnt |
| description: | |
| When the `enable_tcp_keepalive` option is enabled, if Kubernetes API does not respond |
| to a keepalive probe, TCP retransmits the probe `tcp_keep_cnt number` of times before |
| a connection is considered to be broken. |
| version_added: ~ |
| type: integer |
| example: ~ |
| default: "6" |
| - name: verify_ssl |
| description: | |
| Set this to false to skip verifying SSL certificate of Kubernetes python client. |
| version_added: ~ |
| type: boolean |
| example: ~ |
| default: "True" |
| - name: worker_pods_pending_timeout |
| description: | |
| How long in seconds a worker can be in Pending before it is considered a failure |
| version_added: 2.1.0 |
| type: integer |
| example: ~ |
| default: "300" |
| - name: worker_pods_pending_timeout_check_interval |
| description: | |
| How often in seconds to check if Pending workers have exceeded their timeouts |
| version_added: 2.1.0 |
| type: integer |
| example: ~ |
| default: "120" |
| - name: worker_pods_pending_timeout_batch_size |
| description: | |
| How many pending pods to check for timeout violations in each check interval. |
| You may want this higher if you have a very large cluster and/or use ``multi_namespace_mode``. |
| version_added: 2.1.0 |
| type: integer |
| example: ~ |
| default: "100" |
| - name: smart_sensor |
| description: ~ |
| options: |
| - name: use_smart_sensor |
| description: | |
| When `use_smart_sensor` is True, Airflow redirects multiple qualified sensor tasks to |
| smart sensor task. |
| version_added: 2.0.0 |
| type: boolean |
| example: ~ |
| default: "False" |
| - name: shard_code_upper_limit |
| description: | |
| `shard_code_upper_limit` is the upper limit of `shard_code` value. The `shard_code` is generated |
| by `hashcode % shard_code_upper_limit`. |
| version_added: 2.0.0 |
| type: integer |
| example: ~ |
| default: "10000" |
| - name: shards |
| description: | |
| The number of running smart sensor processes for each service. |
| version_added: ~ |
| type: integer |
| example: ~ |
| default: "5" |
| - name: sensors_enabled |
| description: | |
| comma separated sensor classes support in smart_sensor. |
| version_added: 2.0.0 |
| type: string |
| example: ~ |
| default: "NamedHivePartitionSensor" |