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 <li class="toctree-l1"><a class="reference internal" href="cli-and-env-variables-ref.html">CLI</a></li>
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 <li class="toctree-l1"><a class="reference internal" href="python-api-ref.html">Python API</a></li>
 <li class="toctree-l1"><a class="reference internal" href="stable-rest-api-ref.html">Stable REST API</a></li>
 <li class="toctree-l1"><a class="reference internal" href="deprecated-rest-api-ref.html">Deprecated REST API</a></li>
 <li class="toctree-l1 current"><a class="current reference internal" href="#">Configurations</a><ul>
 <li class="toctree-l2"><a class="reference internal" href="#api">[api]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#access-control-allow-headers">access_control_allow_headers</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#access-control-allow-methods">access_control_allow_methods</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#access-control-allow-origin">access_control_allow_origin</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#auth-backend">auth_backend</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#enable-experimental-api">enable_experimental_api</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#fallback-page-limit">fallback_page_limit</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#google-key-path">google_key_path</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#google-oauth2-audience">google_oauth2_audience</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#maximum-page-limit">maximum_page_limit</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#atlas">[atlas]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#host">host</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#password">password</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#port">port</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sasl-enabled">sasl_enabled</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#username">username</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#celery">[celery]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#broker-url">broker_url</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#celery-app-name">celery_app_name</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#celery-config-options">celery_config_options</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#flower-basic-auth">flower_basic_auth</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#flower-host">flower_host</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#flower-port">flower_port</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#flower-url-prefix">flower_url_prefix</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#operation-timeout">operation_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#pool">pool</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#result-backend">result_backend</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#ssl-active">ssl_active</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#ssl-cacert">ssl_cacert</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#ssl-cert">ssl_cert</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#ssl-key">ssl_key</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sync-parallelism">sync_parallelism</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-adoption-timeout">task_adoption_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-publish-max-retries">task_publish_max_retries</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-track-started">task_track_started</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-autoscale">worker_autoscale</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-concurrency">worker_concurrency</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-log-server-port">worker_log_server_port</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-precheck">worker_precheck</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-prefetch-multiplier">worker_prefetch_multiplier</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-umask">worker_umask</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-queue-deprecated">default_queue (Deprecated)</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#celery-broker-transport-options">[celery_broker_transport_options]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#visibility-timeout">visibility_timeout</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#celery-kubernetes-executor">[celery_kubernetes_executor]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#kubernetes-queue">kubernetes_queue</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#cli">[cli]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#api-client">api_client</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#endpoint-url">endpoint_url</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#core">[core]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#check-slas">check_slas</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-concurrency">dag_concurrency</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-discovery-safe-mode">dag_discovery_safe_mode</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-file-processor-timeout">dag_file_processor_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-run-conf-overrides-params">dag_run_conf_overrides_params</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dagbag-import-error-traceback-depth">dagbag_import_error_traceback_depth</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dagbag-import-error-tracebacks">dagbag_import_error_tracebacks</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dagbag-import-timeout">dagbag_import_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dags-are-paused-at-creation">dags_are_paused_at_creation</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dags-folder">dags_folder</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-impersonation">default_impersonation</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-task-retries">default_task_retries</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-timezone">default_timezone</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#donot-pickle">donot_pickle</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#enable-xcom-pickling">enable_xcom_pickling</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#execute-tasks-new-python-interpreter">execute_tasks_new_python_interpreter</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#executor">executor</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#fernet-key">fernet_key</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#hide-sensitive-var-conn-fields">hide_sensitive_var_conn_fields</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#hostname-callable">hostname_callable</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#killed-task-cleanup-time">killed_task_cleanup_time</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#lazy-discover-providers">lazy_discover_providers</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#lazy-load-plugins">lazy_load_plugins</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#load-default-connections">load_default_connections</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#load-examples">load_examples</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-active-runs-per-dag">max_active_runs_per_dag</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-db-retries">max_db_retries</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-num-rendered-ti-fields-per-task">max_num_rendered_ti_fields_per_task</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-queued-runs-per-dag">max_queued_runs_per_dag</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#min-serialized-dag-fetch-interval">min_serialized_dag_fetch_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#min-serialized-dag-update-interval">min_serialized_dag_update_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#parallelism">parallelism</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#plugins-folder">plugins_folder</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#security">security</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sensitive-var-conn-names">sensitive_var_conn_names</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-conn">sql_alchemy_conn</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-connect-args">sql_alchemy_connect_args</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-max-overflow">sql_alchemy_max_overflow</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-pool-enabled">sql_alchemy_pool_enabled</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-pool-pre-ping">sql_alchemy_pool_pre_ping</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-pool-recycle">sql_alchemy_pool_recycle</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-pool-size">sql_alchemy_pool_size</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-schema">sql_alchemy_schema</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-engine-collation-for-ids">sql_engine_collation_for_ids</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-engine-encoding">sql_engine_encoding</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#store-dag-code">store_dag_code</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-runner">task_runner</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#unit-test-mode">unit_test_mode</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#xcom-backend">xcom_backend</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#base-log-folder-deprecated">base_log_folder (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-console-log-deprecated">colored_console_log (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-formatter-class-deprecated">colored_formatter_class (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-log-format-deprecated">colored_log_format (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-processor-manager-log-location-deprecated">dag_processor_manager_log_location (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#encrypt-s3-logs-deprecated">encrypt_s3_logs (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#fab-logging-level-deprecated">fab_logging_level (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-filename-template-deprecated">log_filename_template (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-format-deprecated">log_format (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-processor-filename-template-deprecated">log_processor_filename_template (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#logging-config-class-deprecated">logging_config_class (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#logging-level-deprecated">logging_level (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-base-log-folder-deprecated">remote_base_log_folder (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-log-conn-id-deprecated">remote_log_conn_id (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-logging-deprecated">remote_logging (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#simple-log-format-deprecated">simple_log_format (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-log-prefix-template-deprecated">task_log_prefix_template (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-log-reader-deprecated">task_log_reader (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-precheck-deprecated">worker_precheck (Deprecated)</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#dask">[dask]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#cluster-address">cluster_address</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tls-ca">tls_ca</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tls-cert">tls_cert</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tls-key">tls_key</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#debug">[debug]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#fail-fast">fail_fast</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#elasticsearch">[elasticsearch]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#end-of-log-mark">end_of_log_mark</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#frontend">frontend</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#config-elasticsearch-host">host</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#host-field">host_field</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#json-fields">json_fields</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#json-format">json_format</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-id-template">log_id_template</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#offset-field">offset_field</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#write-stdout">write_stdout</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#elasticsearch-configs">[elasticsearch_configs]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#use-ssl">use_ssl</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#verify-certs">verify_certs</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#email">[email]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#default-email-on-failure">default_email_on_failure</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-email-on-retry">default_email_on_retry</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#email-backend">email_backend</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#email-conn-id">email_conn_id</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#html-content-template">html_content_template</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#subject-template">subject_template</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#github-enterprise">[github_enterprise]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#api-rev">api_rev</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#hive">[hive]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#default-hive-mapred-queue">default_hive_mapred_queue</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#mapred-job-name-template">mapred_job_name_template</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#kerberos">[kerberos]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#ccache">ccache</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#keytab">keytab</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#kinit-path">kinit_path</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#principal">principal</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#reinit-frequency">reinit_frequency</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#kubernetes">[kubernetes]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#cluster-context">cluster_context</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#config-file">config_file</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#delete-option-kwargs">delete_option_kwargs</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#delete-worker-pods">delete_worker_pods</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#delete-worker-pods-on-failure">delete_worker_pods_on_failure</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#enable-tcp-keepalive">enable_tcp_keepalive</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#in-cluster">in_cluster</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#kube-client-request-args">kube_client_request_args</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#multi-namespace-mode">multi_namespace_mode</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#namespace">namespace</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#pod-template-file">pod_template_file</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tcp-keep-cnt">tcp_keep_cnt</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tcp-keep-idle">tcp_keep_idle</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tcp-keep-intvl">tcp_keep_intvl</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#verify-ssl">verify_ssl</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-container-repository">worker_container_repository</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-container-tag">worker_container_tag</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-pods-creation-batch-size">worker_pods_creation_batch_size</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-pods-pending-timeout">worker_pods_pending_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-pods-pending-timeout-batch-size">worker_pods_pending_timeout_batch_size</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-pods-pending-timeout-check-interval">worker_pods_pending_timeout_check_interval</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#lineage">[lineage]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#backend">backend</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#logging">[logging]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#base-log-folder">base_log_folder</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-console-log">colored_console_log</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-formatter-class">colored_formatter_class</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-log-format">colored_log_format</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-processor-manager-log-location">dag_processor_manager_log_location</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#encrypt-s3-logs">encrypt_s3_logs</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#extra-loggers">extra_loggers</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#fab-logging-level">fab_logging_level</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#config-logging-google-key-path">google_key_path</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-filename-template">log_filename_template</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-format">log_format</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-processor-filename-template">log_processor_filename_template</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#logging-config-class">logging_config_class</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#logging-level">logging_level</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-base-log-folder">remote_base_log_folder</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-log-conn-id">remote_log_conn_id</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-logging">remote_logging</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#simple-log-format">simple_log_format</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-log-prefix-template">task_log_prefix_template</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-log-reader">task_log_reader</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#metrics">[metrics]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#stat-name-handler">stat_name_handler</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-allow-list">statsd_allow_list</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-custom-client-path">statsd_custom_client_path</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-datadog-enabled">statsd_datadog_enabled</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-datadog-tags">statsd_datadog_tags</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-host">statsd_host</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-on">statsd_on</a></li>
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 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#operators">[operators]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#allow-illegal-arguments">allow_illegal_arguments</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-cpus">default_cpus</a></li>
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 <li class="toctree-l2"><a class="reference internal" href="#scheduler">[scheduler]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#allow-trigger-in-future">allow_trigger_in_future</a></li>
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 <li class="toctree-l3"><a class="reference internal" href="#print-stats-interval">print_stats_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#processor-poll-interval">processor_poll_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#schedule-after-task-execution">schedule_after_task_execution</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#scheduler-health-check-threshold">scheduler_health_check_threshold</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#scheduler-heartbeat-sec">scheduler_heartbeat_sec</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#scheduler-zombie-task-threshold">scheduler_zombie_task_threshold</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#use-job-schedule">use_job_schedule</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#use-row-level-locking">use_row_level_locking</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-threads-deprecated">max_threads (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#stat-name-handler-deprecated">stat_name_handler (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-allow-list-deprecated">statsd_allow_list (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-custom-client-path-deprecated">statsd_custom_client_path (Deprecated)</a></li>
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 <li class="toctree-l2"><a class="reference internal" href="#secrets">[secrets]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#config-secrets-backend">backend</a></li>
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 <li class="toctree-l3"><a class="reference internal" href="#sentry-on">sentry_on</a></li>
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 <li class="toctree-l2"><a class="reference internal" href="#smart-sensor">[smart_sensor]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#sensors-enabled">sensors_enabled</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#shard-code-upper-limit">shard_code_upper_limit</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#shards">shards</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#use-smart-sensor">use_smart_sensor</a></li>
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 <li class="toctree-l2"><a class="reference internal" href="#smtp">[smtp]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-host">smtp_host</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-mail-from">smtp_mail_from</a></li>
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 <li class="toctree-l3"><a class="reference internal" href="#smtp-starttls">smtp_starttls</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-timeout">smtp_timeout</a></li>
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 <li class="toctree-l3"><a class="reference internal" href="#access-logfile">access_logfile</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#access-logformat">access_logformat</a></li>
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 <li class="toctree-l3"><a class="reference internal" href="#cookie-secure">cookie_secure</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-default-view">dag_default_view</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-orientation">dag_orientation</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-dag-run-display-number">default_dag_run_display_number</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-ui-timezone">default_ui_timezone</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-wrap">default_wrap</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#enable-proxy-fix">enable_proxy_fix</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#error-logfile">error_logfile</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#expose-config">expose_config</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#expose-hostname">expose_hostname</a></li>
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 <li class="toctree-l3"><a class="reference internal" href="#flower-basic-auth">flower_basic_auth</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#flower-host">flower_host</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#flower-port">flower_port</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#flower-url-prefix">flower_url_prefix</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#operation-timeout">operation_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#pool">pool</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#result-backend">result_backend</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#ssl-active">ssl_active</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#ssl-cacert">ssl_cacert</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#ssl-cert">ssl_cert</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#ssl-key">ssl_key</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sync-parallelism">sync_parallelism</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-adoption-timeout">task_adoption_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-publish-max-retries">task_publish_max_retries</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-track-started">task_track_started</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-autoscale">worker_autoscale</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-concurrency">worker_concurrency</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-log-server-port">worker_log_server_port</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-precheck">worker_precheck</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-prefetch-multiplier">worker_prefetch_multiplier</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-umask">worker_umask</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-queue-deprecated">default_queue (Deprecated)</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#celery-broker-transport-options">[celery_broker_transport_options]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#visibility-timeout">visibility_timeout</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#celery-kubernetes-executor">[celery_kubernetes_executor]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#kubernetes-queue">kubernetes_queue</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#cli">[cli]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#api-client">api_client</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#endpoint-url">endpoint_url</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#core">[core]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#check-slas">check_slas</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-concurrency">dag_concurrency</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-discovery-safe-mode">dag_discovery_safe_mode</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-file-processor-timeout">dag_file_processor_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-run-conf-overrides-params">dag_run_conf_overrides_params</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dagbag-import-error-traceback-depth">dagbag_import_error_traceback_depth</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dagbag-import-error-tracebacks">dagbag_import_error_tracebacks</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dagbag-import-timeout">dagbag_import_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dags-are-paused-at-creation">dags_are_paused_at_creation</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dags-folder">dags_folder</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-impersonation">default_impersonation</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-task-retries">default_task_retries</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-timezone">default_timezone</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#donot-pickle">donot_pickle</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#enable-xcom-pickling">enable_xcom_pickling</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#execute-tasks-new-python-interpreter">execute_tasks_new_python_interpreter</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#executor">executor</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#fernet-key">fernet_key</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#hide-sensitive-var-conn-fields">hide_sensitive_var_conn_fields</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#hostname-callable">hostname_callable</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#killed-task-cleanup-time">killed_task_cleanup_time</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#lazy-discover-providers">lazy_discover_providers</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#lazy-load-plugins">lazy_load_plugins</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#load-default-connections">load_default_connections</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#load-examples">load_examples</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-active-runs-per-dag">max_active_runs_per_dag</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-db-retries">max_db_retries</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-num-rendered-ti-fields-per-task">max_num_rendered_ti_fields_per_task</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-queued-runs-per-dag">max_queued_runs_per_dag</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#min-serialized-dag-fetch-interval">min_serialized_dag_fetch_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#min-serialized-dag-update-interval">min_serialized_dag_update_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#parallelism">parallelism</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#plugins-folder">plugins_folder</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#security">security</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sensitive-var-conn-names">sensitive_var_conn_names</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-conn">sql_alchemy_conn</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-connect-args">sql_alchemy_connect_args</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-max-overflow">sql_alchemy_max_overflow</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-pool-enabled">sql_alchemy_pool_enabled</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-pool-pre-ping">sql_alchemy_pool_pre_ping</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-pool-recycle">sql_alchemy_pool_recycle</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-pool-size">sql_alchemy_pool_size</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-alchemy-schema">sql_alchemy_schema</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-engine-collation-for-ids">sql_engine_collation_for_ids</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sql-engine-encoding">sql_engine_encoding</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#store-dag-code">store_dag_code</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-runner">task_runner</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#unit-test-mode">unit_test_mode</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#xcom-backend">xcom_backend</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#base-log-folder-deprecated">base_log_folder (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-console-log-deprecated">colored_console_log (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-formatter-class-deprecated">colored_formatter_class (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-log-format-deprecated">colored_log_format (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-processor-manager-log-location-deprecated">dag_processor_manager_log_location (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#encrypt-s3-logs-deprecated">encrypt_s3_logs (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#fab-logging-level-deprecated">fab_logging_level (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-filename-template-deprecated">log_filename_template (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-format-deprecated">log_format (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-processor-filename-template-deprecated">log_processor_filename_template (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#logging-config-class-deprecated">logging_config_class (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#logging-level-deprecated">logging_level (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-base-log-folder-deprecated">remote_base_log_folder (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-log-conn-id-deprecated">remote_log_conn_id (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-logging-deprecated">remote_logging (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#simple-log-format-deprecated">simple_log_format (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-log-prefix-template-deprecated">task_log_prefix_template (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-log-reader-deprecated">task_log_reader (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-precheck-deprecated">worker_precheck (Deprecated)</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#dask">[dask]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#cluster-address">cluster_address</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tls-ca">tls_ca</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tls-cert">tls_cert</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tls-key">tls_key</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#debug">[debug]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#fail-fast">fail_fast</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#elasticsearch">[elasticsearch]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#end-of-log-mark">end_of_log_mark</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#frontend">frontend</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#config-elasticsearch-host">host</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#host-field">host_field</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#json-fields">json_fields</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#json-format">json_format</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-id-template">log_id_template</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#offset-field">offset_field</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#write-stdout">write_stdout</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#elasticsearch-configs">[elasticsearch_configs]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#use-ssl">use_ssl</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#verify-certs">verify_certs</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#email">[email]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#default-email-on-failure">default_email_on_failure</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-email-on-retry">default_email_on_retry</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#email-backend">email_backend</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#email-conn-id">email_conn_id</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#html-content-template">html_content_template</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#subject-template">subject_template</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#github-enterprise">[github_enterprise]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#api-rev">api_rev</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#hive">[hive]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#default-hive-mapred-queue">default_hive_mapred_queue</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#mapred-job-name-template">mapred_job_name_template</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#kerberos">[kerberos]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#ccache">ccache</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#keytab">keytab</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#kinit-path">kinit_path</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#principal">principal</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#reinit-frequency">reinit_frequency</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#kubernetes">[kubernetes]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#cluster-context">cluster_context</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#config-file">config_file</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#delete-option-kwargs">delete_option_kwargs</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#delete-worker-pods">delete_worker_pods</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#delete-worker-pods-on-failure">delete_worker_pods_on_failure</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#enable-tcp-keepalive">enable_tcp_keepalive</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#in-cluster">in_cluster</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#kube-client-request-args">kube_client_request_args</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#multi-namespace-mode">multi_namespace_mode</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#namespace">namespace</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#pod-template-file">pod_template_file</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tcp-keep-cnt">tcp_keep_cnt</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tcp-keep-idle">tcp_keep_idle</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#tcp-keep-intvl">tcp_keep_intvl</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#verify-ssl">verify_ssl</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-container-repository">worker_container_repository</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-container-tag">worker_container_tag</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-pods-creation-batch-size">worker_pods_creation_batch_size</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-pods-pending-timeout">worker_pods_pending_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-pods-pending-timeout-batch-size">worker_pods_pending_timeout_batch_size</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-pods-pending-timeout-check-interval">worker_pods_pending_timeout_check_interval</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#lineage">[lineage]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#backend">backend</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#logging">[logging]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#base-log-folder">base_log_folder</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-console-log">colored_console_log</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-formatter-class">colored_formatter_class</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#colored-log-format">colored_log_format</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-processor-manager-log-location">dag_processor_manager_log_location</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#encrypt-s3-logs">encrypt_s3_logs</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#extra-loggers">extra_loggers</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#fab-logging-level">fab_logging_level</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#config-logging-google-key-path">google_key_path</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-filename-template">log_filename_template</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-format">log_format</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-processor-filename-template">log_processor_filename_template</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#logging-config-class">logging_config_class</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#logging-level">logging_level</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-base-log-folder">remote_base_log_folder</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-log-conn-id">remote_log_conn_id</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#remote-logging">remote_logging</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#simple-log-format">simple_log_format</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-log-prefix-template">task_log_prefix_template</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#task-log-reader">task_log_reader</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#metrics">[metrics]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#stat-name-handler">stat_name_handler</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-allow-list">statsd_allow_list</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-custom-client-path">statsd_custom_client_path</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-datadog-enabled">statsd_datadog_enabled</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-datadog-tags">statsd_datadog_tags</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-host">statsd_host</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-on">statsd_on</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-port">statsd_port</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-prefix">statsd_prefix</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#operators">[operators]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#allow-illegal-arguments">allow_illegal_arguments</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-cpus">default_cpus</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-disk">default_disk</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-gpus">default_gpus</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-owner">default_owner</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-queue">default_queue</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-ram">default_ram</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#scheduler">[scheduler]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#allow-trigger-in-future">allow_trigger_in_future</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#catchup-by-default">catchup_by_default</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#child-process-log-directory">child_process_log_directory</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#clean-tis-without-dagrun-interval">clean_tis_without_dagrun_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-dir-list-interval">dag_dir_list_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dependency-detector">dependency_detector</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#file-parsing-sort-mode">file_parsing_sort_mode</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#job-heartbeat-sec">job_heartbeat_sec</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-dagruns-per-loop-to-schedule">max_dagruns_per_loop_to_schedule</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-dagruns-to-create-per-loop">max_dagruns_to_create_per_loop</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-tis-per-query">max_tis_per_query</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#min-file-process-interval">min_file_process_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#num-runs">num_runs</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#orphaned-tasks-check-interval">orphaned_tasks_check_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#parsing-processes">parsing_processes</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#pool-metrics-interval">pool_metrics_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#print-stats-interval">print_stats_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#processor-poll-interval">processor_poll_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#schedule-after-task-execution">schedule_after_task_execution</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#scheduler-health-check-threshold">scheduler_health_check_threshold</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#scheduler-heartbeat-sec">scheduler_heartbeat_sec</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#scheduler-zombie-task-threshold">scheduler_zombie_task_threshold</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#use-job-schedule">use_job_schedule</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#use-row-level-locking">use_row_level_locking</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#max-threads-deprecated">max_threads (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#stat-name-handler-deprecated">stat_name_handler (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-allow-list-deprecated">statsd_allow_list (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-custom-client-path-deprecated">statsd_custom_client_path (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-datadog-enabled-deprecated">statsd_datadog_enabled (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-datadog-tags-deprecated">statsd_datadog_tags (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-host-deprecated">statsd_host (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-on-deprecated">statsd_on (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-port-deprecated">statsd_port (Deprecated)</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#statsd-prefix-deprecated">statsd_prefix (Deprecated)</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#secrets">[secrets]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#config-secrets-backend">backend</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#backend-kwargs">backend_kwargs</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#sentry">[sentry]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#sentry-dsn">sentry_dsn</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sentry-on">sentry_on</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#smart-sensor">[smart_sensor]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#sensors-enabled">sensors_enabled</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#shard-code-upper-limit">shard_code_upper_limit</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#shards">shards</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#use-smart-sensor">use_smart_sensor</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#smtp">[smtp]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-host">smtp_host</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-mail-from">smtp_mail_from</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-password">smtp_password</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-port">smtp_port</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-retry-limit">smtp_retry_limit</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-ssl">smtp_ssl</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-starttls">smtp_starttls</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-timeout">smtp_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#smtp-user">smtp_user</a></li>
 </ul>
 </li>
 <li class="toctree-l2"><a class="reference internal" href="#webserver">[webserver]</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#access-logfile">access_logfile</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#access-logformat">access_logformat</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#analytics-id">analytics_id</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#analytics-tool">analytics_tool</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#base-url">base_url</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#cookie-samesite">cookie_samesite</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#cookie-secure">cookie_secure</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-default-view">dag_default_view</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#dag-orientation">dag_orientation</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-dag-run-display-number">default_dag_run_display_number</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-ui-timezone">default_ui_timezone</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#default-wrap">default_wrap</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#enable-proxy-fix">enable_proxy_fix</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#error-logfile">error_logfile</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#expose-config">expose_config</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#expose-hostname">expose_hostname</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#expose-stacktrace">expose_stacktrace</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#hide-paused-dags-by-default">hide_paused_dags_by_default</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#instance-name">instance_name</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-animation-speed">log_animation_speed</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-auto-tailing-offset">log_auto_tailing_offset</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-fetch-delay-sec">log_fetch_delay_sec</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#log-fetch-timeout-sec">log_fetch_timeout_sec</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#navbar-color">navbar_color</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#page-size">page_size</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#proxy-fix-x-for">proxy_fix_x_for</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#proxy-fix-x-host">proxy_fix_x_host</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#proxy-fix-x-port">proxy_fix_x_port</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#proxy-fix-x-prefix">proxy_fix_x_prefix</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#proxy-fix-x-proto">proxy_fix_x_proto</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#reload-on-plugin-change">reload_on_plugin_change</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#secret-key">secret_key</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#session-lifetime-minutes">session_lifetime_minutes</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#show-recent-stats-for-completed-runs">show_recent_stats_for_completed_runs</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#update-fab-perms">update_fab_perms</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#web-server-host">web_server_host</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#web-server-master-timeout">web_server_master_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#web-server-port">web_server_port</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#web-server-ssl-cert">web_server_ssl_cert</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#web-server-ssl-key">web_server_ssl_key</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#web-server-worker-timeout">web_server_worker_timeout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-class">worker_class</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-refresh-batch-size">worker_refresh_batch_size</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#worker-refresh-interval">worker_refresh_interval</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#workers">workers</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#x-frame-enabled">x_frame_enabled</a></li>
 </ul>
 </li>
 </ul>
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 <li class="toctree-l1"><a class="reference internal" href="extra-packages-ref.html">Extra packages</a></li>
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   <blockquote>
 <div></div></blockquote>
 <div class="section" id="configuration-reference">
 <h1>Configuration Reference<a class="headerlink" href="#configuration-reference" title="Permalink to this headline">¶</a></h1>
 <p>This page contains the list of all the available Airflow configurations that you
 can set in <code class="docutils literal notranslate"><span class="pre">airflow.cfg</span></code> file or using environment variables.</p>
 <div class="admonition note">
 <p class="admonition-title">Note</p>
 <p>For more information on setting the configuration, see <a class="reference internal" href="howto/set-config.html"><span class="doc">Setting Configuration Options</span></a></p>
 </div>
 <div class="contents local topic" id="sections">
 <p class="topic-title">Sections:</p>
 <ul class="simple">
 <li><p><a class="reference internal" href="#api" id="id4">[api]</a></p></li>
 <li><p><a class="reference internal" href="#atlas" id="id5">[atlas]</a></p></li>
 <li><p><a class="reference internal" href="#celery" id="id6">[celery]</a></p></li>
 <li><p><a class="reference internal" href="#celery-broker-transport-options" id="id7">[celery_broker_transport_options]</a></p></li>
 <li><p><a class="reference internal" href="#celery-kubernetes-executor" id="id8">[celery_kubernetes_executor]</a></p></li>
 <li><p><a class="reference internal" href="#cli" id="id9">[cli]</a></p></li>
 <li><p><a class="reference internal" href="#core" id="id10">[core]</a></p></li>
 <li><p><a class="reference internal" href="#dask" id="id11">[dask]</a></p></li>
 <li><p><a class="reference internal" href="#debug" id="id12">[debug]</a></p></li>
 <li><p><a class="reference internal" href="#elasticsearch" id="id13">[elasticsearch]</a></p></li>
 <li><p><a class="reference internal" href="#elasticsearch-configs" id="id14">[elasticsearch_configs]</a></p></li>
 <li><p><a class="reference internal" href="#email" id="id15">[email]</a></p></li>
 <li><p><a class="reference internal" href="#github-enterprise" id="id16">[github_enterprise]</a></p></li>
 <li><p><a class="reference internal" href="#hive" id="id17">[hive]</a></p></li>
 <li><p><a class="reference internal" href="#kerberos" id="id18">[kerberos]</a></p></li>
 <li><p><a class="reference internal" href="#kubernetes" id="id19">[kubernetes]</a></p></li>
 <li><p><a class="reference internal" href="#lineage" id="id20">[lineage]</a></p></li>
 <li><p><a class="reference internal" href="#logging" id="id21">[logging]</a></p></li>
 <li><p><a class="reference internal" href="#metrics" id="id22">[metrics]</a></p></li>
 <li><p><a class="reference internal" href="#operators" id="id23">[operators]</a></p></li>
 <li><p><a class="reference internal" href="#scheduler" id="id24">[scheduler]</a></p></li>
 <li><p><a class="reference internal" href="#secrets" id="id25">[secrets]</a></p></li>
 <li><p><a class="reference internal" href="#sentry" id="id26">[sentry]</a></p></li>
 <li><p><a class="reference internal" href="#smart-sensor" id="id27">[smart_sensor]</a></p></li>
 <li><p><a class="reference internal" href="#smtp" id="id28">[smtp]</a></p></li>
 <li><p><a class="reference internal" href="#webserver" id="id29">[webserver]</a></p></li>
 </ul>
 </div>
 <div class="section" id="api">
 <span id="config-api"></span><h2><a class="toc-backref" href="#id4">[api]</a><a class="headerlink" href="#api" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="access-control-allow-headers">
 <span id="config-api-access-control-allow-headers"></span><h3>access_control_allow_headers<a class="headerlink" href="#access-control-allow-headers" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__API__ACCESS_CONTROL_ALLOW_HEADERS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="access-control-allow-methods">
 <span id="config-api-access-control-allow-methods"></span><h3>access_control_allow_methods<a class="headerlink" href="#access-control-allow-methods" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>Specifies the method or methods allowed when accessing the resource.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__API__ACCESS_CONTROL_ALLOW_METHODS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="access-control-allow-origin">
 <span id="config-api-access-control-allow-origin"></span><h3>access_control_allow_origin<a class="headerlink" href="#access-control-allow-origin" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.2.0.</span></p>
 </div>
 <p>Indicates whether the response can be shared with requesting code from the given origin.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__API__ACCESS_CONTROL_ALLOW_ORIGIN</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="auth-backend">
 <span id="config-api-auth-backend"></span><h3>auth_backend<a class="headerlink" href="#auth-backend" title="Permalink to this headline">¶</a></h3>
 <p>How to authenticate users of the API. See
 <a class="reference external" href="https://airflow.apache.org/docs/apache-airflow/stable/security.html">https://airflow.apache.org/docs/apache-airflow/stable/security.html</a> for possible values.
 (“airflow.api.auth.backend.default” allows all requests for historic reasons)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow.api.auth.backend.deny_all</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__API__AUTH_BACKEND</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="enable-experimental-api">
 <span id="config-api-enable-experimental-api"></span><h3>enable_experimental_api<a class="headerlink" href="#enable-experimental-api" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Enables the deprecated experimental API. Please note that these APIs do not have access control.
 The authenticated user has full access.</p>
 <div class="admonition warning">
 <p class="admonition-title">Warning</p>
 <p>This <a class="reference external" href="https://airflow.readthedocs.io/en/latest/rest-api-ref.html">Experimental REST API</a> is
 deprecated since version 2.0. Please consider using
 <a class="reference external" href="https://airflow.readthedocs.io/en/latest/stable-rest-api-ref.html">the Stable REST API</a>.
 For more information on migration, see
 <a class="reference external" href="https://github.com/apache/airflow/blob/main/UPDATING.md">UPDATING.md</a></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__API__ENABLE_EXPERIMENTAL_API</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="fallback-page-limit">
 <span id="config-api-fallback-page-limit"></span><h3>fallback_page_limit<a class="headerlink" href="#fallback-page-limit" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">100</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__API__FALLBACK_PAGE_LIMIT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="google-key-path">
 <span id="config-api-google-key-path"></span><h3>google_key_path<a class="headerlink" href="#google-key-path" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Path to Google Cloud Service Account key file (JSON). If omitted, authorization based on
 <a class="reference external" href="https://cloud.google.com/docs/authentication/production#finding_credentials_automatically">the Application Default Credentials</a> will
 be used.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__API__GOOGLE_KEY_PATH</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">/files/service-account-json</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="google-oauth2-audience">
 <span id="config-api-google-oauth2-audience"></span><h3>google_oauth2_audience<a class="headerlink" href="#google-oauth2-audience" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__API__GOOGLE_OAUTH2_AUDIENCE</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">project-id-random-value.apps.googleusercontent.com</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="maximum-page-limit">
 <span id="config-api-maximum-page-limit"></span><h3>maximum_page_limit<a class="headerlink" href="#maximum-page-limit" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Used to set the maximum page limit for API requests</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">100</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__API__MAXIMUM_PAGE_LIMIT</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="atlas">
 <span id="config-atlas"></span><h2><a class="toc-backref" href="#id5">[atlas]</a><a class="headerlink" href="#atlas" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="host">
 <span id="config-atlas-host"></span><h3>host<a class="headerlink" href="#host" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ATLAS__HOST</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="password">
 <span id="config-atlas-password"></span><h3>password<a class="headerlink" href="#password" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variables</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ATLAS__PASSWORD</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ATLAS__PASSWORD_CMD</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ATLAS__PASSWORD_SECRET</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="port">
 <span id="config-atlas-port"></span><h3>port<a class="headerlink" href="#port" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">21000</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ATLAS__PORT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sasl-enabled">
 <span id="config-atlas-sasl-enabled"></span><h3>sasl_enabled<a class="headerlink" href="#sasl-enabled" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ATLAS__SASL_ENABLED</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="username">
 <span id="config-atlas-username"></span><h3>username<a class="headerlink" href="#username" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ATLAS__USERNAME</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="celery">
 <span id="config-celery"></span><h2><a class="toc-backref" href="#id6">[celery]</a><a class="headerlink" href="#celery" title="Permalink to this headline">¶</a></h2>
 <p>This section only applies if you are using the CeleryExecutor in
 <code class="docutils literal notranslate"><span class="pre">[core]</span></code> section above</p>
 <div class="section" id="broker-url">
 <span id="config-celery-broker-url"></span><h3>broker_url<a class="headerlink" href="#broker-url" title="Permalink to this headline">¶</a></h3>
 <p>The Celery broker URL. Celery supports RabbitMQ, Redis and experimentally
 a sqlalchemy database. Refer to the Celery documentation for more information.</p>
 <dl class="field-list">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">redis://redis:6379/0</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variables</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__BROKER_URL</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__BROKER_URL_CMD</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__BROKER_URL_SECRET</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="celery-app-name">
 <span id="config-celery-celery-app-name"></span><h3>celery_app_name<a class="headerlink" href="#celery-app-name" title="Permalink to this headline">¶</a></h3>
 <p>The app name that will be used by celery</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow.executors.celery_executor</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__CELERY_APP_NAME</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="celery-config-options">
 <span id="config-celery-celery-config-options"></span><h3>celery_config_options<a class="headerlink" href="#celery-config-options" title="Permalink to this headline">¶</a></h3>
 <p>Import path for celery configuration options</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow.config_templates.default_celery.DEFAULT_CELERY_CONFIG</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__CELERY_CONFIG_OPTIONS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="flower-basic-auth">
 <span id="config-celery-flower-basic-auth"></span><h3>flower_basic_auth<a class="headerlink" href="#flower-basic-auth" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.2.</span></p>
 </div>
 <p>Securing Flower with Basic Authentication
 Accepts user:password pairs separated by a comma</p>
 <dl class="field-list">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variables</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__FLOWER_BASIC_AUTH</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__FLOWER_BASIC_AUTH_CMD</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__FLOWER_BASIC_AUTH_SECRET</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">user1:password1,user2:password2</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="flower-host">
 <span id="config-celery-flower-host"></span><h3>flower_host<a class="headerlink" href="#flower-host" title="Permalink to this headline">¶</a></h3>
 <p>Celery Flower is a sweet UI for Celery. Airflow has a shortcut to start
 it <code class="docutils literal notranslate"><span class="pre">airflow</span> <span class="pre">celery</span> <span class="pre">flower</span></code>. This defines the IP that Celery Flower runs on</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">0.0.0.0</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__FLOWER_HOST</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="flower-port">
 <span id="config-celery-flower-port"></span><h3>flower_port<a class="headerlink" href="#flower-port" title="Permalink to this headline">¶</a></h3>
 <p>This defines the port that Celery Flower runs on</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">5555</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__FLOWER_PORT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="flower-url-prefix">
 <span id="config-celery-flower-url-prefix"></span><h3>flower_url_prefix<a class="headerlink" href="#flower-url-prefix" title="Permalink to this headline">¶</a></h3>
 <p>The root URL for Flower</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__FLOWER_URL_PREFIX</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">/flower</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="operation-timeout">
 <span id="config-celery-operation-timeout"></span><h3>operation_timeout<a class="headerlink" href="#operation-timeout" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.8.</span></p>
 </div>
 <p>The number of seconds to wait before timing out <code class="docutils literal notranslate"><span class="pre">send_task_to_executor</span></code> or
 <code class="docutils literal notranslate"><span class="pre">fetch_celery_task_state</span></code> operations.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>float</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1.0</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__OPERATION_TIMEOUT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="pool">
 <span id="config-celery-pool"></span><h3>pool<a class="headerlink" href="#pool" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.4.</span></p>
 </div>
 <p>Celery Pool implementation.
 Choices include: <code class="docutils literal notranslate"><span class="pre">prefork</span></code> (default), <code class="docutils literal notranslate"><span class="pre">eventlet</span></code>, <code class="docutils literal notranslate"><span class="pre">gevent</span></code> or <code class="docutils literal notranslate"><span class="pre">solo</span></code>.
 See:
 <a class="reference external" href="https://docs.celeryproject.org/en/latest/userguide/workers.html#concurrency">https://docs.celeryproject.org/en/latest/userguide/workers.html#concurrency</a>
 <a class="reference external" href="https://docs.celeryproject.org/en/latest/userguide/concurrency/eventlet.html">https://docs.celeryproject.org/en/latest/userguide/concurrency/eventlet.html</a></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">prefork</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__POOL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="result-backend">
 <span id="config-celery-result-backend"></span><h3>result_backend<a class="headerlink" href="#result-backend" title="Permalink to this headline">¶</a></h3>
 <p>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
 <a class="reference external" href="http://docs.celeryproject.org/en/latest/userguide/configuration.html#task-result-backend-settings">http://docs.celeryproject.org/en/latest/userguide/configuration.html#task-result-backend-settings</a></p>
 <dl class="field-list">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">db+postgresql://postgres:airflow&#64;postgres/airflow</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variables</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__RESULT_BACKEND</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__RESULT_BACKEND_CMD</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__RESULT_BACKEND_SECRET</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="ssl-active">
 <span id="config-celery-ssl-active"></span><h3>ssl_active<a class="headerlink" href="#ssl-active" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__SSL_ACTIVE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="ssl-cacert">
 <span id="config-celery-ssl-cacert"></span><h3>ssl_cacert<a class="headerlink" href="#ssl-cacert" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__SSL_CACERT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="ssl-cert">
 <span id="config-celery-ssl-cert"></span><h3>ssl_cert<a class="headerlink" href="#ssl-cert" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__SSL_CERT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="ssl-key">
 <span id="config-celery-ssl-key"></span><h3>ssl_key<a class="headerlink" href="#ssl-key" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__SSL_KEY</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sync-parallelism">
 <span id="config-celery-sync-parallelism"></span><h3>sync_parallelism<a class="headerlink" href="#sync-parallelism" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.3.</span></p>
 </div>
 <p>How many processes CeleryExecutor uses to sync task state.
 0 means to use max(1, number of cores - 1) processes.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">0</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__SYNC_PARALLELISM</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="task-adoption-timeout">
 <span id="config-celery-task-adoption-timeout"></span><h3>task_adoption_timeout<a class="headerlink" href="#task-adoption-timeout" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Time in seconds after which Adopted tasks are cleared by CeleryExecutor. This is helpful to clear
 stalled tasks.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">600</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__TASK_ADOPTION_TIMEOUT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="task-publish-max-retries">
 <span id="config-celery-task-publish-max-retries"></span><h3>task_publish_max_retries<a class="headerlink" href="#task-publish-max-retries" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>The Maximum number of retries for publishing task messages to the broker when failing
 due to <code class="docutils literal notranslate"><span class="pre">AirflowTaskTimeout</span></code> error before giving up and marking Task as failed.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">3</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__TASK_PUBLISH_MAX_RETRIES</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="task-track-started">
 <span id="config-celery-task-track-started"></span><h3>task_track_started<a class="headerlink" href="#task-track-started" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__TASK_TRACK_STARTED</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-autoscale">
 <span id="config-celery-worker-autoscale"></span><h3>worker_autoscale<a class="headerlink" href="#worker-autoscale" title="Permalink to this headline">¶</a></h3>
 <p>The maximum and minimum concurrency that will be used when starting workers with the
 <code class="docutils literal notranslate"><span class="pre">airflow</span> <span class="pre">celery</span> <span class="pre">worker</span></code> 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.
 <a class="reference external" href="http://docs.celeryproject.org/en/latest/reference/celery.bin.worker.html#cmdoption-celery-worker-autoscale">http://docs.celeryproject.org/en/latest/reference/celery.bin.worker.html#cmdoption-celery-worker-autoscale</a></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__WORKER_AUTOSCALE</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">16,12</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-concurrency">
 <span id="config-celery-worker-concurrency"></span><h3>worker_concurrency<a class="headerlink" href="#worker-concurrency" title="Permalink to this headline">¶</a></h3>
 <p>The concurrency that will be used when starting workers with the
 <code class="docutils literal notranslate"><span class="pre">airflow</span> <span class="pre">celery</span> <span class="pre">worker</span></code> 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</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">16</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__WORKER_CONCURRENCY</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-log-server-port">
 <span id="config-celery-worker-log-server-port"></span><h3>worker_log_server_port<a class="headerlink" href="#worker-log-server-port" title="Permalink to this headline">¶</a></h3>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">8793</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__WORKER_LOG_SERVER_PORT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-precheck">
 <span id="config-celery-worker-precheck"></span><h3>worker_precheck<a class="headerlink" href="#worker-precheck" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Worker initialisation check to validate Metadata Database connection</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__WORKER_PRECHECK</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-prefetch-multiplier">
 <span id="config-celery-worker-prefetch-multiplier"></span><h3>worker_prefetch_multiplier<a class="headerlink" href="#worker-prefetch-multiplier" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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.
 <a class="reference external" href="https://docs.celeryproject.org/en/stable/userguide/optimizing.html#prefetch-limits">https://docs.celeryproject.org/en/stable/userguide/optimizing.html#prefetch-limits</a></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__WORKER_PREFETCH_MULTIPLIER</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-umask">
 <span id="config-celery-worker-umask"></span><h3>worker_umask<a class="headerlink" href="#worker-umask" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Umask that will be used when starting workers with the <code class="docutils literal notranslate"><span class="pre">airflow</span> <span class="pre">celery</span> <span class="pre">worker</span></code>
 in daemon mode. This control the file-creation mode mask which determines the initial
 value of file permission bits for newly created files.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">0o077</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY__WORKER_UMASK</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-queue-deprecated">
 <span id="config-celery-default-queue"></span><h3>default_queue (Deprecated)<a class="headerlink" href="#default-queue-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.1.0: </span>The option has been moved to <a class="reference internal" href="#config-operators-default-queue"><span class="std std-ref">operators.default_queue</span></a></p>
 </div>
 </div>
 </div>
 <div class="section" id="celery-broker-transport-options">
 <span id="config-celery-broker-transport-options"></span><h2><a class="toc-backref" href="#id7">[celery_broker_transport_options]</a><a class="headerlink" href="#celery-broker-transport-options" title="Permalink to this headline">¶</a></h2>
 <p>This section is for specifying options which can be passed to the
 underlying celery broker transport. See:
 <a class="reference external" href="http://docs.celeryproject.org/en/latest/userguide/configuration.html#std:setting-broker_transport_options">http://docs.celeryproject.org/en/latest/userguide/configuration.html#std:setting-broker_transport_options</a></p>
 <div class="section" id="visibility-timeout">
 <span id="config-celery-broker-transport-options-visibility-timeout"></span><h3>visibility_timeout<a class="headerlink" href="#visibility-timeout" title="Permalink to this headline">¶</a></h3>
 <p>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:
 <a class="reference external" href="http://docs.celeryproject.org/en/master/userguide/configuration.html#std:setting-broker_transport_options">http://docs.celeryproject.org/en/master/userguide/configuration.html#std:setting-broker_transport_options</a></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY_BROKER_TRANSPORT_OPTIONS__VISIBILITY_TIMEOUT</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">21600</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="celery-kubernetes-executor">
 <span id="config-celery-kubernetes-executor"></span><h2><a class="toc-backref" href="#id8">[celery_kubernetes_executor]</a><a class="headerlink" href="#celery-kubernetes-executor" title="Permalink to this headline">¶</a></h2>
 <p>This section only applies if you are using the <code class="docutils literal notranslate"><span class="pre">CeleryKubernetesExecutor</span></code> in
 <code class="docutils literal notranslate"><span class="pre">[core]</span></code> section above</p>
 <div class="section" id="kubernetes-queue">
 <span id="config-celery-kubernetes-executor-kubernetes-queue"></span><h3>kubernetes_queue<a class="headerlink" href="#kubernetes-queue" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Define when to send a task to <code class="docutils literal notranslate"><span class="pre">KubernetesExecutor</span></code> when using <code class="docutils literal notranslate"><span class="pre">CeleryKubernetesExecutor</span></code>.
 When the queue of a task is the value of <code class="docutils literal notranslate"><span class="pre">kubernetes_queue</span></code> (default <code class="docutils literal notranslate"><span class="pre">kubernetes</span></code>),
 the task is executed via <code class="docutils literal notranslate"><span class="pre">KubernetesExecutor</span></code>,
 otherwise via <code class="docutils literal notranslate"><span class="pre">CeleryExecutor</span></code></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">kubernetes</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CELERY_KUBERNETES_EXECUTOR__KUBERNETES_QUEUE</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="cli">
 <span id="config-cli"></span><h2><a class="toc-backref" href="#id9">[cli]</a><a class="headerlink" href="#cli" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="api-client">
 <span id="config-cli-api-client"></span><h3>api_client<a class="headerlink" href="#api-client" title="Permalink to this headline">¶</a></h3>
 <p>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</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow.api.client.local_client</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CLI__API_CLIENT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="endpoint-url">
 <span id="config-cli-endpoint-url"></span><h3>endpoint_url<a class="headerlink" href="#endpoint-url" title="Permalink to this headline">¶</a></h3>
 <p>If you set web_server_url_prefix, do NOT forget to append it here, ex:
 <code class="docutils literal notranslate"><span class="pre">endpoint_url</span> <span class="pre">=</span> <span class="pre">http://localhost:8080/myroot</span></code>
 So api will look like: <code class="docutils literal notranslate"><span class="pre">http://localhost:8080/myroot/api/experimental/...</span></code></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">http://localhost:8080</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CLI__ENDPOINT_URL</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="core">
 <span id="config-core"></span><h2><a class="toc-backref" href="#id10">[core]</a><a class="headerlink" href="#core" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="check-slas">
 <span id="config-core-check-slas"></span><h3>check_slas<a class="headerlink" href="#check-slas" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.8.</span></p>
 </div>
 <p>On each dagrun check against defined SLAs</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__CHECK_SLAS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dag-concurrency">
 <span id="config-core-dag-concurrency"></span><h3>dag_concurrency<a class="headerlink" href="#dag-concurrency" title="Permalink to this headline">¶</a></h3>
 <p>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 <code class="docutils literal notranslate"><span class="pre">concurrency</span></code>,
 which is defaulted as <code class="docutils literal notranslate"><span class="pre">dag_concurrency</span></code>.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">16</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DAG_CONCURRENCY</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dag-discovery-safe-mode">
 <span id="config-core-dag-discovery-safe-mode"></span><h3>dag_discovery_safe_mode<a class="headerlink" href="#dag-discovery-safe-mode" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.3.</span></p>
 </div>
 <p>When discovering DAGs, ignore any files that don’t contain the strings <code class="docutils literal notranslate"><span class="pre">DAG</span></code> and <code class="docutils literal notranslate"><span class="pre">airflow</span></code>.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DAG_DISCOVERY_SAFE_MODE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dag-file-processor-timeout">
 <span id="config-core-dag-file-processor-timeout"></span><h3>dag_file_processor_timeout<a class="headerlink" href="#dag-file-processor-timeout" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.6.</span></p>
 </div>
 <p>How long before timing out a DagFileProcessor, which processes a dag file</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">50</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DAG_FILE_PROCESSOR_TIMEOUT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dag-run-conf-overrides-params">
 <span id="config-core-dag-run-conf-overrides-params"></span><h3>dag_run_conf_overrides_params<a class="headerlink" href="#dag-run-conf-overrides-params" title="Permalink to this headline">¶</a></h3>
 <p>Whether to override params with dag_run.conf. If you pass some key-value pairs
 through <code class="docutils literal notranslate"><span class="pre">airflow</span> <span class="pre">dags</span> <span class="pre">backfill</span> <span class="pre">-c</span></code> or
 <code class="docutils literal notranslate"><span class="pre">airflow</span> <span class="pre">dags</span> <span class="pre">trigger</span> <span class="pre">-c</span></code>, the key-value pairs will override the existing ones in params.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DAG_RUN_CONF_OVERRIDES_PARAMS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dagbag-import-error-traceback-depth">
 <span id="config-core-dagbag-import-error-traceback-depth"></span><h3>dagbag_import_error_traceback_depth<a class="headerlink" href="#dagbag-import-error-traceback-depth" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>If tracebacks are shown, how many entries from the traceback should be shown</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">2</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DAGBAG_IMPORT_ERROR_TRACEBACK_DEPTH</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dagbag-import-error-tracebacks">
 <span id="config-core-dagbag-import-error-tracebacks"></span><h3>dagbag_import_error_tracebacks<a class="headerlink" href="#dagbag-import-error-tracebacks" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Should a traceback be shown in the UI for dagbag import errors,
 instead of just the exception message</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DAGBAG_IMPORT_ERROR_TRACEBACKS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dagbag-import-timeout">
 <span id="config-core-dagbag-import-timeout"></span><h3>dagbag_import_timeout<a class="headerlink" href="#dagbag-import-timeout" title="Permalink to this headline">¶</a></h3>
 <p>How long before timing out a python file import</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>float</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">30.0</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DAGBAG_IMPORT_TIMEOUT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dags-are-paused-at-creation">
 <span id="config-core-dags-are-paused-at-creation"></span><h3>dags_are_paused_at_creation<a class="headerlink" href="#dags-are-paused-at-creation" title="Permalink to this headline">¶</a></h3>
 <p>Are DAGs paused by default at creation</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DAGS_ARE_PAUSED_AT_CREATION</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dags-folder">
 <span id="config-core-dags-folder"></span><h3>dags_folder<a class="headerlink" href="#dags-folder" title="Permalink to this headline">¶</a></h3>
 <p>The folder where your airflow pipelines live, most likely a
 subfolder in a code repository. This path must be absolute.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{AIRFLOW_HOME}/dags</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DAGS_FOLDER</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-impersonation">
 <span id="config-core-default-impersonation"></span><h3>default_impersonation<a class="headerlink" href="#default-impersonation" title="Permalink to this headline">¶</a></h3>
 <p>If set, tasks without a <code class="docutils literal notranslate"><span class="pre">run_as_user</span></code> argument will be run with this user
 Can be used to de-elevate a sudo user running Airflow when executing tasks</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DEFAULT_IMPERSONATION</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-task-retries">
 <span id="config-core-default-task-retries"></span><h3>default_task_retries<a class="headerlink" href="#default-task-retries" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.6.</span></p>
 </div>
 <p>The number of retries each task is going to have by default. Can be overridden at dag or task level.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">0</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DEFAULT_TASK_RETRIES</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-timezone">
 <span id="config-core-default-timezone"></span><h3>default_timezone<a class="headerlink" href="#default-timezone" title="Permalink to this headline">¶</a></h3>
 <p>Default timezone in case supplied date times are naive
 can be utc (default), system, or any IANA timezone string (e.g. Europe/Amsterdam)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">utc</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DEFAULT_TIMEZONE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="donot-pickle">
 <span id="config-core-donot-pickle"></span><h3>donot_pickle<a class="headerlink" href="#donot-pickle" title="Permalink to this headline">¶</a></h3>
 <p>Whether to disable pickling dags</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__DONOT_PICKLE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="enable-xcom-pickling">
 <span id="config-core-enable-xcom-pickling"></span><h3>enable_xcom_pickling<a class="headerlink" href="#enable-xcom-pickling" title="Permalink to this headline">¶</a></h3>
 <p>Whether to enable pickling for xcom (note that this is insecure and allows for
 RCE exploits).</p>
 <div class="admonition seealso">
 <p class="admonition-title">See also</p>
 <p><a class="reference external" href="https://docs.python.org/3/library/pickle.html#comparison-with-json">https://docs.python.org/3/library/pickle.html#comparison-with-json</a></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__ENABLE_XCOM_PICKLING</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="execute-tasks-new-python-interpreter">
 <span id="config-core-execute-tasks-new-python-interpreter"></span><h3>execute_tasks_new_python_interpreter<a class="headerlink" href="#execute-tasks-new-python-interpreter" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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)</p>
 <div class="admonition seealso">
 <p class="admonition-title">See also</p>
 <p><a class="reference internal" href="plugins.html#plugins-loading"><span class="std std-ref">When are plugins (re)loaded?</span></a></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__EXECUTE_TASKS_NEW_PYTHON_INTERPRETER</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="executor">
 <span id="config-core-executor"></span><h3>executor<a class="headerlink" href="#executor" title="Permalink to this headline">¶</a></h3>
 <p>The executor class that airflow should use. Choices include
 <code class="docutils literal notranslate"><span class="pre">SequentialExecutor</span></code>, <code class="docutils literal notranslate"><span class="pre">LocalExecutor</span></code>, <code class="docutils literal notranslate"><span class="pre">CeleryExecutor</span></code>, <code class="docutils literal notranslate"><span class="pre">DaskExecutor</span></code>,
 <code class="docutils literal notranslate"><span class="pre">KubernetesExecutor</span></code>, <code class="docutils literal notranslate"><span class="pre">CeleryKubernetesExecutor</span></code> or the
 full import path to the class when using a custom executor.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">SequentialExecutor</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__EXECUTOR</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="fernet-key">
 <span id="config-core-fernet-key"></span><h3>fernet_key<a class="headerlink" href="#fernet-key" title="Permalink to this headline">¶</a></h3>
 <p>Secret key to save connection passwords in the db</p>
 <dl class="field-list">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{FERNET_KEY}</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variables</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__FERNET_KEY</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__FERNET_KEY_CMD</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__FERNET_KEY_SECRET</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="hide-sensitive-var-conn-fields">
 <span id="config-core-hide-sensitive-var-conn-fields"></span><h3>hide_sensitive_var_conn_fields<a class="headerlink" href="#hide-sensitive-var-conn-fields" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>Hide sensitive Variables or Connection extra json keys from UI and task logs when set to True</p>
 <p>(Connection passwords are always hidden in logs)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__HIDE_SENSITIVE_VAR_CONN_FIELDS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="hostname-callable">
 <span id="config-core-hostname-callable"></span><h3>hostname_callable<a class="headerlink" href="#hostname-callable" title="Permalink to this headline">¶</a></h3>
 <p>Hostname by providing a path to a callable, which will resolve the hostname.
 The format is “package.function”.</p>
 <p>For example, default value “socket.getfqdn” means that result from getfqdn() of “socket”
 package will be used as hostname.</p>
 <p>No argument should be required in the function specified.
 If using IP address as hostname is preferred, use value <code class="docutils literal notranslate"><span class="pre">airflow.utils.net.get_host_ip_address</span></code></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">socket.getfqdn</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__HOSTNAME_CALLABLE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="killed-task-cleanup-time">
 <span id="config-core-killed-task-cleanup-time"></span><h3>killed_task_cleanup_time<a class="headerlink" href="#killed-task-cleanup-time" title="Permalink to this headline">¶</a></h3>
 <p>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</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">60</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__KILLED_TASK_CLEANUP_TIME</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="lazy-discover-providers">
 <span id="config-core-lazy-discover-providers"></span><h3>lazy_discover_providers<a class="headerlink" href="#lazy-discover-providers" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__LAZY_DISCOVER_PROVIDERS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="lazy-load-plugins">
 <span id="config-core-lazy-load-plugins"></span><h3>lazy_load_plugins<a class="headerlink" href="#lazy-load-plugins" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>By default Airflow plugins are lazily-loaded (only loaded when required). Set it to <code class="docutils literal notranslate"><span class="pre">False</span></code>,
 if you want to load plugins whenever ‘airflow’ is invoked via cli or loaded from module.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__LAZY_LOAD_PLUGINS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="load-default-connections">
 <span id="config-core-load-default-connections"></span><h3>load_default_connections<a class="headerlink" href="#load-default-connections" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.10.</span></p>
 </div>
 <p>Whether to load the default connections that ship with Airflow. It’s good to
 get started, but you probably want to set this to <code class="docutils literal notranslate"><span class="pre">False</span></code> in a production
 environment</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__LOAD_DEFAULT_CONNECTIONS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="load-examples">
 <span id="config-core-load-examples"></span><h3>load_examples<a class="headerlink" href="#load-examples" title="Permalink to this headline">¶</a></h3>
 <p>Whether to load the DAG examples that ship with Airflow. It’s good to
 get started, but you probably want to set this to <code class="docutils literal notranslate"><span class="pre">False</span></code> in a production
 environment</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__LOAD_EXAMPLES</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="max-active-runs-per-dag">
 <span id="config-core-max-active-runs-per-dag"></span><h3>max_active_runs_per_dag<a class="headerlink" href="#max-active-runs-per-dag" title="Permalink to this headline">¶</a></h3>
 <p>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 <code class="docutils literal notranslate"><span class="pre">max_active_runs</span></code>,
 which is defaulted as <code class="docutils literal notranslate"><span class="pre">max_active_runs_per_dag</span></code>.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">16</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__MAX_ACTIVE_RUNS_PER_DAG</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="max-db-retries">
 <span id="config-core-max-db-retries"></span><h3>max_db_retries<a class="headerlink" href="#max-db-retries" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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 <code class="docutils literal notranslate"><span class="pre">DagFileProcessor.process_file</span></code> to retry <code class="docutils literal notranslate"><span class="pre">dagbag.sync_to_db</span></code>.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">3</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__MAX_DB_RETRIES</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="max-num-rendered-ti-fields-per-task">
 <span id="config-core-max-num-rendered-ti-fields-per-task"></span><h3>max_num_rendered_ti_fields_per_task<a class="headerlink" href="#max-num-rendered-ti-fields-per-task" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.10.</span></p>
 </div>
 <p>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 <code class="docutils literal notranslate"><span class="pre">Rendered</span></code> tab in
 TaskInstance view for older tasks.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">30</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__MAX_NUM_RENDERED_TI_FIELDS_PER_TASK</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="max-queued-runs-per-dag">
 <span id="config-core-max-queued-runs-per-dag"></span><h3>max_queued_runs_per_dag<a class="headerlink" href="#max-queued-runs-per-dag" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.4.</span></p>
 </div>
 <p>The maximum number of queued dagruns for a single DAG. The scheduler will not create more DAG runs
 if it reaches the limit. This is not configurable at the DAG level.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">16</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__MAX_QUEUED_RUNS_PER_DAG</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="min-serialized-dag-fetch-interval">
 <span id="config-core-min-serialized-dag-fetch-interval"></span><h3>min_serialized_dag_fetch_interval<a class="headerlink" href="#min-serialized-dag-fetch-interval" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.12.</span></p>
 </div>
 <p>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</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">10</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__MIN_SERIALIZED_DAG_FETCH_INTERVAL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="min-serialized-dag-update-interval">
 <span id="config-core-min-serialized-dag-update-interval"></span><h3>min_serialized_dag_update_interval<a class="headerlink" href="#min-serialized-dag-update-interval" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.7.</span></p>
 </div>
 <p>Updating serialized DAG can not be faster than a minimum interval to reduce database write rate.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">30</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__MIN_SERIALIZED_DAG_UPDATE_INTERVAL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="parallelism">
 <span id="config-core-parallelism"></span><h3>parallelism<a class="headerlink" href="#parallelism" title="Permalink to this headline">¶</a></h3>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">32</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__PARALLELISM</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="plugins-folder">
 <span id="config-core-plugins-folder"></span><h3>plugins_folder<a class="headerlink" href="#plugins-folder" title="Permalink to this headline">¶</a></h3>
 <p>Path to the folder containing Airflow plugins</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{AIRFLOW_HOME}/plugins</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__PLUGINS_FOLDER</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="security">
 <span id="config-core-security"></span><h3>security<a class="headerlink" href="#security" title="Permalink to this headline">¶</a></h3>
 <p>What security module to use (for example kerberos)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SECURITY</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sensitive-var-conn-names">
 <span id="config-core-sensitive-var-conn-names"></span><h3>sensitive_var_conn_names<a class="headerlink" href="#sensitive-var-conn-names" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>A comma-separated list of extra sensitive keywords to look for in variables names or connection’s
 extra JSON.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SENSITIVE_VAR_CONN_NAMES</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sql-alchemy-conn">
 <span id="config-core-sql-alchemy-conn"></span><h3>sql_alchemy_conn<a class="headerlink" href="#sql-alchemy-conn" title="Permalink to this headline">¶</a></h3>
 <p>The SqlAlchemy connection string to the metadata database.
 SqlAlchemy supports many different database engines.
 More information here:
 <a class="reference external" href="http://airflow.apache.org/docs/apache-airflow/stable/howto/set-up-database.html#database-uri">http://airflow.apache.org/docs/apache-airflow/stable/howto/set-up-database.html#database-uri</a></p>
 <dl class="field-list">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">sqlite:///{AIRFLOW_HOME}/airflow.db</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variables</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ALCHEMY_CONN</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ALCHEMY_CONN_CMD</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ALCHEMY_CONN_SECRET</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sql-alchemy-connect-args">
 <span id="config-core-sql-alchemy-connect-args"></span><h3>sql_alchemy_connect_args<a class="headerlink" href="#sql-alchemy-connect-args" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.11.</span></p>
 </div>
 <p>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 <a class="reference external" href="https://docs.sqlalchemy.org/en/13/core/engines.html#sqlalchemy.create_engine.params.connect_args">https://docs.sqlalchemy.org/en/13/core/engines.html#sqlalchemy.create_engine.params.connect_args</a></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ALCHEMY_CONNECT_ARGS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sql-alchemy-max-overflow">
 <span id="config-core-sql-alchemy-max-overflow"></span><h3>sql_alchemy_max_overflow<a class="headerlink" href="#sql-alchemy-max-overflow" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.4.</span></p>
 </div>
 <p>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 <code class="docutils literal notranslate"><span class="pre">-1</span></code> to indicate no overflow limit;
 no limit will be placed on the total number of concurrent connections. Defaults to <code class="docutils literal notranslate"><span class="pre">10</span></code>.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">10</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ALCHEMY_MAX_OVERFLOW</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sql-alchemy-pool-enabled">
 <span id="config-core-sql-alchemy-pool-enabled"></span><h3>sql_alchemy_pool_enabled<a class="headerlink" href="#sql-alchemy-pool-enabled" title="Permalink to this headline">¶</a></h3>
 <p>If SqlAlchemy should pool database connections.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ALCHEMY_POOL_ENABLED</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sql-alchemy-pool-pre-ping">
 <span id="config-core-sql-alchemy-pool-pre-ping"></span><h3>sql_alchemy_pool_pre_ping<a class="headerlink" href="#sql-alchemy-pool-pre-ping" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.6.</span></p>
 </div>
 <p>Check connection at the start of each connection pool checkout.
 Typically, this is a simple statement like “SELECT 1”.
 More information here:
 <a class="reference external" href="https://docs.sqlalchemy.org/en/13/core/pooling.html#disconnect-handling-pessimistic">https://docs.sqlalchemy.org/en/13/core/pooling.html#disconnect-handling-pessimistic</a></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ALCHEMY_POOL_PRE_PING</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sql-alchemy-pool-recycle">
 <span id="config-core-sql-alchemy-pool-recycle"></span><h3>sql_alchemy_pool_recycle<a class="headerlink" href="#sql-alchemy-pool-recycle" title="Permalink to this headline">¶</a></h3>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1800</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ALCHEMY_POOL_RECYCLE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sql-alchemy-pool-size">
 <span id="config-core-sql-alchemy-pool-size"></span><h3>sql_alchemy_pool_size<a class="headerlink" href="#sql-alchemy-pool-size" title="Permalink to this headline">¶</a></h3>
 <p>The SqlAlchemy pool size is the maximum number of database connections
 in the pool. 0 indicates no limit.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">5</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ALCHEMY_POOL_SIZE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sql-alchemy-schema">
 <span id="config-core-sql-alchemy-schema"></span><h3>sql_alchemy_schema<a class="headerlink" href="#sql-alchemy-schema" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.3.</span></p>
 </div>
 <p>The schema to use for the metadata database.
 SqlAlchemy supports databases with the concept of multiple schemas.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ALCHEMY_SCHEMA</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sql-engine-collation-for-ids">
 <span id="config-core-sql-engine-collation-for-ids"></span><h3>sql_engine_collation_for_ids<a class="headerlink" href="#sql-engine-collation-for-ids" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Collation for <code class="docutils literal notranslate"><span class="pre">dag_id</span></code>, <code class="docutils literal notranslate"><span class="pre">task_id</span></code>, <code class="docutils literal notranslate"><span class="pre">key</span></code> 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 <code class="docutils literal notranslate"><span class="pre">sql_engine_collation_for_ids</span></code> should
 be set to <code class="docutils literal notranslate"><span class="pre">utf8mb3_general_ci</span></code>.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ENGINE_COLLATION_FOR_IDS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sql-engine-encoding">
 <span id="config-core-sql-engine-encoding"></span><h3>sql_engine_encoding<a class="headerlink" href="#sql-engine-encoding" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.1.</span></p>
 </div>
 <p>The encoding for the databases</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">utf-8</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__SQL_ENGINE_ENCODING</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="store-dag-code">
 <span id="config-core-store-dag-code"></span><h3>store_dag_code<a class="headerlink" href="#store-dag-code" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.10.</span></p>
 </div>
 <p>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 <code class="docutils literal notranslate"><span class="pre">True</span></code>)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__STORE_DAG_CODE</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="task-runner">
 <span id="config-core-task-runner"></span><h3>task_runner<a class="headerlink" href="#task-runner" title="Permalink to this headline">¶</a></h3>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">StandardTaskRunner</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__TASK_RUNNER</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="unit-test-mode">
 <span id="config-core-unit-test-mode"></span><h3>unit_test_mode<a class="headerlink" href="#unit-test-mode" title="Permalink to this headline">¶</a></h3>
 <p>Turn unit test mode on (overwrites many configuration options with test
 values at runtime)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__UNIT_TEST_MODE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="xcom-backend">
 <span id="config-core-xcom-backend"></span><h3>xcom_backend<a class="headerlink" href="#xcom-backend" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.12.</span></p>
 </div>
 <p>Path to custom XCom class that will be used to store and resolve operators results</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow.models.xcom.BaseXCom</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__CORE__XCOM_BACKEND</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">path.to.CustomXCom</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="base-log-folder-deprecated">
 <span id="config-core-base-log-folder"></span><h3>base_log_folder (Deprecated)<a class="headerlink" href="#base-log-folder-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-base-log-folder"><span class="std std-ref">logging.base_log_folder</span></a></p>
 </div>
 </div>
 <div class="section" id="colored-console-log-deprecated">
 <span id="config-core-colored-console-log"></span><h3>colored_console_log (Deprecated)<a class="headerlink" href="#colored-console-log-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-colored-console-log"><span class="std std-ref">logging.colored_console_log</span></a></p>
 </div>
 </div>
 <div class="section" id="colored-formatter-class-deprecated">
 <span id="config-core-colored-formatter-class"></span><h3>colored_formatter_class (Deprecated)<a class="headerlink" href="#colored-formatter-class-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-colored-formatter-class"><span class="std std-ref">logging.colored_formatter_class</span></a></p>
 </div>
 </div>
 <div class="section" id="colored-log-format-deprecated">
 <span id="config-core-colored-log-format"></span><h3>colored_log_format (Deprecated)<a class="headerlink" href="#colored-log-format-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-colored-log-format"><span class="std std-ref">logging.colored_log_format</span></a></p>
 </div>
 </div>
 <div class="section" id="dag-processor-manager-log-location-deprecated">
 <span id="config-core-dag-processor-manager-log-location"></span><h3>dag_processor_manager_log_location (Deprecated)<a class="headerlink" href="#dag-processor-manager-log-location-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-dag-processor-manager-log-location"><span class="std std-ref">logging.dag_processor_manager_log_location</span></a></p>
 </div>
 </div>
 <div class="section" id="encrypt-s3-logs-deprecated">
 <span id="config-core-encrypt-s3-logs"></span><h3>encrypt_s3_logs (Deprecated)<a class="headerlink" href="#encrypt-s3-logs-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-encrypt-s3-logs"><span class="std std-ref">logging.encrypt_s3_logs</span></a></p>
 </div>
 </div>
 <div class="section" id="fab-logging-level-deprecated">
 <span id="config-core-fab-logging-level"></span><h3>fab_logging_level (Deprecated)<a class="headerlink" href="#fab-logging-level-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-fab-logging-level"><span class="std std-ref">logging.fab_logging_level</span></a></p>
 </div>
 </div>
 <div class="section" id="log-filename-template-deprecated">
 <span id="config-core-log-filename-template"></span><h3>log_filename_template (Deprecated)<a class="headerlink" href="#log-filename-template-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-log-filename-template"><span class="std std-ref">logging.log_filename_template</span></a></p>
 </div>
 </div>
 <div class="section" id="log-format-deprecated">
 <span id="config-core-log-format"></span><h3>log_format (Deprecated)<a class="headerlink" href="#log-format-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-log-format"><span class="std std-ref">logging.log_format</span></a></p>
 </div>
 </div>
 <div class="section" id="log-processor-filename-template-deprecated">
 <span id="config-core-log-processor-filename-template"></span><h3>log_processor_filename_template (Deprecated)<a class="headerlink" href="#log-processor-filename-template-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-log-processor-filename-template"><span class="std std-ref">logging.log_processor_filename_template</span></a></p>
 </div>
 </div>
 <div class="section" id="logging-config-class-deprecated">
 <span id="config-core-logging-config-class"></span><h3>logging_config_class (Deprecated)<a class="headerlink" href="#logging-config-class-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-logging-config-class"><span class="std std-ref">logging.logging_config_class</span></a></p>
 </div>
 </div>
 <div class="section" id="logging-level-deprecated">
 <span id="config-core-logging-level"></span><h3>logging_level (Deprecated)<a class="headerlink" href="#logging-level-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-logging-level"><span class="std std-ref">logging.logging_level</span></a></p>
 </div>
 </div>
 <div class="section" id="remote-base-log-folder-deprecated">
 <span id="config-core-remote-base-log-folder"></span><h3>remote_base_log_folder (Deprecated)<a class="headerlink" href="#remote-base-log-folder-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-remote-base-log-folder"><span class="std std-ref">logging.remote_base_log_folder</span></a></p>
 </div>
 </div>
 <div class="section" id="remote-log-conn-id-deprecated">
 <span id="config-core-remote-log-conn-id"></span><h3>remote_log_conn_id (Deprecated)<a class="headerlink" href="#remote-log-conn-id-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-remote-log-conn-id"><span class="std std-ref">logging.remote_log_conn_id</span></a></p>
 </div>
 </div>
 <div class="section" id="remote-logging-deprecated">
 <span id="config-core-remote-logging"></span><h3>remote_logging (Deprecated)<a class="headerlink" href="#remote-logging-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-remote-logging"><span class="std std-ref">logging.remote_logging</span></a></p>
 </div>
 </div>
 <div class="section" id="simple-log-format-deprecated">
 <span id="config-core-simple-log-format"></span><h3>simple_log_format (Deprecated)<a class="headerlink" href="#simple-log-format-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-simple-log-format"><span class="std std-ref">logging.simple_log_format</span></a></p>
 </div>
 </div>
 <div class="section" id="task-log-prefix-template-deprecated">
 <span id="config-core-task-log-prefix-template"></span><h3>task_log_prefix_template (Deprecated)<a class="headerlink" href="#task-log-prefix-template-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-task-log-prefix-template"><span class="std std-ref">logging.task_log_prefix_template</span></a></p>
 </div>
 </div>
 <div class="section" id="task-log-reader-deprecated">
 <span id="config-core-task-log-reader"></span><h3>task_log_reader (Deprecated)<a class="headerlink" href="#task-log-reader-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-logging-task-log-reader"><span class="std std-ref">logging.task_log_reader</span></a></p>
 </div>
 </div>
 <div class="section" id="worker-precheck-deprecated">
 <span id="config-core-worker-precheck"></span><h3>worker_precheck (Deprecated)<a class="headerlink" href="#worker-precheck-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-celery-worker-precheck"><span class="std std-ref">celery.worker_precheck</span></a></p>
 </div>
 </div>
 </div>
 <div class="section" id="dask">
 <span id="config-dask"></span><h2><a class="toc-backref" href="#id11">[dask]</a><a class="headerlink" href="#dask" title="Permalink to this headline">¶</a></h2>
 <p>This section only applies if you are using the DaskExecutor in
 [core] section above</p>
 <div class="section" id="cluster-address">
 <span id="config-dask-cluster-address"></span><h3>cluster_address<a class="headerlink" href="#cluster-address" title="Permalink to this headline">¶</a></h3>
 <p>The IP address and port of the Dask cluster’s scheduler.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">127.0.0.1:8786</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__DASK__CLUSTER_ADDRESS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="tls-ca">
 <span id="config-dask-tls-ca"></span><h3>tls_ca<a class="headerlink" href="#tls-ca" title="Permalink to this headline">¶</a></h3>
 <p>TLS/ SSL settings to access a secured Dask scheduler.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__DASK__TLS_CA</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="tls-cert">
 <span id="config-dask-tls-cert"></span><h3>tls_cert<a class="headerlink" href="#tls-cert" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__DASK__TLS_CERT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="tls-key">
 <span id="config-dask-tls-key"></span><h3>tls_key<a class="headerlink" href="#tls-key" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__DASK__TLS_KEY</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="debug">
 <span id="config-debug"></span><h2><a class="toc-backref" href="#id12">[debug]</a><a class="headerlink" href="#debug" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="fail-fast">
 <span id="config-debug-fail-fast"></span><h3>fail_fast<a class="headerlink" href="#fail-fast" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.8.</span></p>
 </div>
 <p>Used only with <code class="docutils literal notranslate"><span class="pre">DebugExecutor</span></code>. If set to <code class="docutils literal notranslate"><span class="pre">True</span></code> DAG will fail with first
 failed task. Helpful for debugging purposes.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__DEBUG__FAIL_FAST</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="elasticsearch">
 <span id="config-elasticsearch"></span><h2><a class="toc-backref" href="#id13">[elasticsearch]</a><a class="headerlink" href="#elasticsearch" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="end-of-log-mark">
 <span id="config-elasticsearch-end-of-log-mark"></span><h3>end_of_log_mark<a class="headerlink" href="#end-of-log-mark" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.4.</span></p>
 </div>
 <p>Used to mark the end of a log stream for a task</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">end_of_log</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ELASTICSEARCH__END_OF_LOG_MARK</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="frontend">
 <span id="config-elasticsearch-frontend"></span><h3>frontend<a class="headerlink" href="#frontend" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.4.</span></p>
 </div>
 <p>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: The code will prefix the <a class="reference external" href="https://">https://</a> automatically, don’t include that here.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ELASTICSEARCH__FRONTEND</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="config-elasticsearch-host">
 <span id="id1"></span><h3>host<a class="headerlink" href="#config-elasticsearch-host" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.4.</span></p>
 </div>
 <p>Elasticsearch host</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ELASTICSEARCH__HOST</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="host-field">
 <span id="config-elasticsearch-host-field"></span><h3>host_field<a class="headerlink" href="#host-field" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.1.</span></p>
 </div>
 <p>The field where host name is stored (normally either <cite>host</cite> or <cite>host.name</cite>)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">host</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ELASTICSEARCH__HOST_FIELD</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="json-fields">
 <span id="config-elasticsearch-json-fields"></span><h3>json_fields<a class="headerlink" href="#json-fields" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.4.</span></p>
 </div>
 <p>Log fields to also attach to the json output, if enabled</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">asctime,</span> <span class="pre">filename,</span> <span class="pre">lineno,</span> <span class="pre">levelname,</span> <span class="pre">message</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ELASTICSEARCH__JSON_FIELDS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="json-format">
 <span id="config-elasticsearch-json-format"></span><h3>json_format<a class="headerlink" href="#json-format" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.4.</span></p>
 </div>
 <p>Instead of the default log formatter, write the log lines as JSON</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ELASTICSEARCH__JSON_FORMAT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="log-id-template">
 <span id="config-elasticsearch-log-id-template"></span><h3>log_id_template<a class="headerlink" href="#log-id-template" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.4.</span></p>
 </div>
 <p>Format of the log_id, which is used to query for a given tasks logs</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{dag_id}-{task_id}-{execution_date}-{try_number}</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ELASTICSEARCH__LOG_ID_TEMPLATE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="offset-field">
 <span id="config-elasticsearch-offset-field"></span><h3>offset_field<a class="headerlink" href="#offset-field" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.1.</span></p>
 </div>
 <p>The field where offset is stored (normally either <cite>offset</cite> or <cite>log.offset</cite>)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">offset</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ELASTICSEARCH__OFFSET_FIELD</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="write-stdout">
 <span id="config-elasticsearch-write-stdout"></span><h3>write_stdout<a class="headerlink" href="#write-stdout" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.4.</span></p>
 </div>
 <p>Write the task logs to the stdout of the worker, rather than the default files</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ELASTICSEARCH__WRITE_STDOUT</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="elasticsearch-configs">
 <span id="config-elasticsearch-configs"></span><h2><a class="toc-backref" href="#id14">[elasticsearch_configs]</a><a class="headerlink" href="#elasticsearch-configs" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="use-ssl">
 <span id="config-elasticsearch-configs-use-ssl"></span><h3>use_ssl<a class="headerlink" href="#use-ssl" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.5.</span></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ELASTICSEARCH_CONFIGS__USE_SSL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="verify-certs">
 <span id="config-elasticsearch-configs-verify-certs"></span><h3>verify_certs<a class="headerlink" href="#verify-certs" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.5.</span></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__ELASTICSEARCH_CONFIGS__VERIFY_CERTS</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="email">
 <span id="config-email"></span><h2><a class="toc-backref" href="#id15">[email]</a><a class="headerlink" href="#email" title="Permalink to this headline">¶</a></h2>
 <p>Configuration email backend and whether to
 send email alerts on retry or failure</p>
 <div class="section" id="default-email-on-failure">
 <span id="config-email-default-email-on-failure"></span><h3>default_email_on_failure<a class="headerlink" href="#default-email-on-failure" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Whether email alerts should be sent when a task failed</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__EMAIL__DEFAULT_EMAIL_ON_FAILURE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-email-on-retry">
 <span id="config-email-default-email-on-retry"></span><h3>default_email_on_retry<a class="headerlink" href="#default-email-on-retry" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Whether email alerts should be sent when a task is retried</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__EMAIL__DEFAULT_EMAIL_ON_RETRY</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="email-backend">
 <span id="config-email-email-backend"></span><h3>email_backend<a class="headerlink" href="#email-backend" title="Permalink to this headline">¶</a></h3>
 <p>Email backend to use</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow.utils.email.send_email_smtp</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__EMAIL__EMAIL_BACKEND</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="email-conn-id">
 <span id="config-email-email-conn-id"></span><h3>email_conn_id<a class="headerlink" href="#email-conn-id" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>Email connection to use</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">smtp_default</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__EMAIL__EMAIL_CONN_ID</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="html-content-template">
 <span id="config-email-html-content-template"></span><h3>html_content_template<a class="headerlink" href="#html-content-template" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.1.</span></p>
 </div>
 <p>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.</p>
 <div class="admonition seealso">
 <p class="admonition-title">See also</p>
 <p><a class="reference internal" href="howto/email-config.html"><span class="doc">Email Configuration</span></a></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__EMAIL__HTML_CONTENT_TEMPLATE</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">/path/to/my_html_content_template_file</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="subject-template">
 <span id="config-email-subject-template"></span><h3>subject_template<a class="headerlink" href="#subject-template" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.1.</span></p>
 </div>
 <p>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.</p>
 <div class="admonition seealso">
 <p class="admonition-title">See also</p>
 <p><a class="reference internal" href="howto/email-config.html"><span class="doc">Email Configuration</span></a></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__EMAIL__SUBJECT_TEMPLATE</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">/path/to/my_subject_template_file</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="github-enterprise">
 <span id="config-github-enterprise"></span><h2><a class="toc-backref" href="#id16">[github_enterprise]</a><a class="headerlink" href="#github-enterprise" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="api-rev">
 <span id="config-github-enterprise-api-rev"></span><h3>api_rev<a class="headerlink" href="#api-rev" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">v3</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__GITHUB_ENTERPRISE__API_REV</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="hive">
 <span id="config-hive"></span><h2><a class="toc-backref" href="#id17">[hive]</a><a class="headerlink" href="#hive" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="default-hive-mapred-queue">
 <span id="config-hive-default-hive-mapred-queue"></span><h3>default_hive_mapred_queue<a class="headerlink" href="#default-hive-mapred-queue" title="Permalink to this headline">¶</a></h3>
 <p>Default mapreduce queue for HiveOperator tasks</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__HIVE__DEFAULT_HIVE_MAPRED_QUEUE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="mapred-job-name-template">
 <span id="config-hive-mapred-job-name-template"></span><h3>mapred_job_name_template<a class="headerlink" href="#mapred-job-name-template" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Template for mapred_job_name in HiveOperator, supports the following named parameters
 hostname, dag_id, task_id, execution_date</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__HIVE__MAPRED_JOB_NAME_TEMPLATE</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="kerberos">
 <span id="config-kerberos"></span><h2><a class="toc-backref" href="#id18">[kerberos]</a><a class="headerlink" href="#kerberos" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="ccache">
 <span id="config-kerberos-ccache"></span><h3>ccache<a class="headerlink" href="#ccache" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">/tmp/airflow_krb5_ccache</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KERBEROS__CCACHE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="keytab">
 <span id="config-kerberos-keytab"></span><h3>keytab<a class="headerlink" href="#keytab" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow.keytab</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KERBEROS__KEYTAB</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="kinit-path">
 <span id="config-kerberos-kinit-path"></span><h3>kinit_path<a class="headerlink" href="#kinit-path" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">kinit</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KERBEROS__KINIT_PATH</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="principal">
 <span id="config-kerberos-principal"></span><h3>principal<a class="headerlink" href="#principal" title="Permalink to this headline">¶</a></h3>
 <p>gets augmented with fqdn</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KERBEROS__PRINCIPAL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="reinit-frequency">
 <span id="config-kerberos-reinit-frequency"></span><h3>reinit_frequency<a class="headerlink" href="#reinit-frequency" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">3600</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KERBEROS__REINIT_FREQUENCY</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="kubernetes">
 <span id="config-kubernetes"></span><h2><a class="toc-backref" href="#id19">[kubernetes]</a><a class="headerlink" href="#kubernetes" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="cluster-context">
 <span id="config-kubernetes-cluster-context"></span><h3>cluster_context<a class="headerlink" href="#cluster-context" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.3.</span></p>
 </div>
 <p>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 <code class="docutils literal notranslate"><span class="pre">kubectl</span></code> has.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__CLUSTER_CONTEXT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="config-file">
 <span id="config-kubernetes-config-file"></span><h3>config_file<a class="headerlink" href="#config-file" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.3.</span></p>
 </div>
 <p>Path to the kubernetes configfile to be used when <code class="docutils literal notranslate"><span class="pre">in_cluster</span></code> is set to False</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__CONFIG_FILE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="delete-option-kwargs">
 <span id="config-kubernetes-delete-option-kwargs"></span><h3>delete_option_kwargs<a class="headerlink" href="#delete-option-kwargs" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.12.</span></p>
 </div>
 <p>Optional keyword arguments to pass to the <code class="docutils literal notranslate"><span class="pre">delete_namespaced_pod</span></code> kubernetes client
 <code class="docutils literal notranslate"><span class="pre">core_v1_api</span></code> method when using the Kubernetes Executor.
 This should be an object and can contain any of the options listed in the <code class="docutils literal notranslate"><span class="pre">v1DeleteOptions</span></code>
 class defined here:
 <a class="reference external" href="https://github.com/kubernetes-client/python/blob/41f11a09995efcd0142e25946adc7591431bfb2f/kubernetes/client/models/v1_delete_options.py#L19">https://github.com/kubernetes-client/python/blob/41f11a09995efcd0142e25946adc7591431bfb2f/kubernetes/client/models/v1_delete_options.py#L19</a></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__DELETE_OPTION_KWARGS</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{&quot;grace_period_seconds&quot;:</span> <span class="pre">10}</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="delete-worker-pods">
 <span id="config-kubernetes-delete-worker-pods"></span><h3>delete_worker_pods<a class="headerlink" href="#delete-worker-pods" title="Permalink to this headline">¶</a></h3>
 <p>If True, all worker pods will be deleted upon termination</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__DELETE_WORKER_PODS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="delete-worker-pods-on-failure">
 <span id="config-kubernetes-delete-worker-pods-on-failure"></span><h3>delete_worker_pods_on_failure<a class="headerlink" href="#delete-worker-pods-on-failure" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.11.</span></p>
 </div>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__DELETE_WORKER_PODS_ON_FAILURE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="enable-tcp-keepalive">
 <span id="config-kubernetes-enable-tcp-keepalive"></span><h3>enable_tcp_keepalive<a class="headerlink" href="#enable-tcp-keepalive" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__ENABLE_TCP_KEEPALIVE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="in-cluster">
 <span id="config-kubernetes-in-cluster"></span><h3>in_cluster<a class="headerlink" href="#in-cluster" title="Permalink to this headline">¶</a></h3>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__IN_CLUSTER</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="kube-client-request-args">
 <span id="config-kubernetes-kube-client-request-args"></span><h3>kube_client_request_args<a class="headerlink" href="#kube-client-request-args" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.4.</span></p>
 </div>
 <p>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:
 <a class="reference external" href="https://raw.githubusercontent.com/kubernetes-client/python/41f11a09995efcd0142e25946adc7591431bfb2f/kubernetes/client/api/core_v1_api.py">https://raw.githubusercontent.com/kubernetes-client/python/41f11a09995efcd0142e25946adc7591431bfb2f/kubernetes/client/api/core_v1_api.py</a></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__KUBE_CLIENT_REQUEST_ARGS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="multi-namespace-mode">
 <span id="config-kubernetes-multi-namespace-mode"></span><h3>multi_namespace_mode<a class="headerlink" href="#multi-namespace-mode" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.12.</span></p>
 </div>
 <p>Allows users to launch pods in multiple namespaces.
 Will require creating a cluster-role for the scheduler</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__MULTI_NAMESPACE_MODE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="namespace">
 <span id="config-kubernetes-namespace"></span><h3>namespace<a class="headerlink" href="#namespace" title="Permalink to this headline">¶</a></h3>
 <p>The Kubernetes namespace where airflow workers should be created. Defaults to <code class="docutils literal notranslate"><span class="pre">default</span></code></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">default</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__NAMESPACE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="pod-template-file">
 <span id="config-kubernetes-pod-template-file"></span><h3>pod_template_file<a class="headerlink" href="#pod-template-file" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.11.</span></p>
 </div>
 <p>Path to the YAML pod file. If set, all other kubernetes-related fields are ignored.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__POD_TEMPLATE_FILE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="tcp-keep-cnt">
 <span id="config-kubernetes-tcp-keep-cnt"></span><h3>tcp_keep_cnt<a class="headerlink" href="#tcp-keep-cnt" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>When the <cite>enable_tcp_keepalive</cite> option is enabled, if Kubernetes API does not respond
 to a keepalive probe, TCP retransmits the probe <cite>tcp_keep_cnt number</cite> of times before
 a connection is considered to be broken.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">6</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__TCP_KEEP_CNT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="tcp-keep-idle">
 <span id="config-kubernetes-tcp-keep-idle"></span><h3>tcp_keep_idle<a class="headerlink" href="#tcp-keep-idle" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>When the <cite>enable_tcp_keepalive</cite> option is enabled, TCP probes a connection that has
 been idle for <cite>tcp_keep_idle</cite> seconds.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">120</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__TCP_KEEP_IDLE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="tcp-keep-intvl">
 <span id="config-kubernetes-tcp-keep-intvl"></span><h3>tcp_keep_intvl<a class="headerlink" href="#tcp-keep-intvl" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>When the <cite>enable_tcp_keepalive</cite> option is enabled, if Kubernetes API does not respond
 to a keepalive probe, TCP retransmits the probe after <cite>tcp_keep_intvl</cite> seconds.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">30</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__TCP_KEEP_INTVL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="verify-ssl">
 <span id="config-kubernetes-verify-ssl"></span><h3>verify_ssl<a class="headerlink" href="#verify-ssl" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>Set this to false to skip verifying SSL certificate of Kubernetes python client.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__VERIFY_SSL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-container-repository">
 <span id="config-kubernetes-worker-container-repository"></span><h3>worker_container_repository<a class="headerlink" href="#worker-container-repository" title="Permalink to this headline">¶</a></h3>
 <p>The repository of the Kubernetes Image for the Worker to Run</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__WORKER_CONTAINER_REPOSITORY</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-container-tag">
 <span id="config-kubernetes-worker-container-tag"></span><h3>worker_container_tag<a class="headerlink" href="#worker-container-tag" title="Permalink to this headline">¶</a></h3>
 <p>The tag of the Kubernetes Image for the Worker to Run</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__WORKER_CONTAINER_TAG</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-pods-creation-batch-size">
 <span id="config-kubernetes-worker-pods-creation-batch-size"></span><h3>worker_pods_creation_batch_size<a class="headerlink" href="#worker-pods-creation-batch-size" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.3.</span></p>
 </div>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__WORKER_PODS_CREATION_BATCH_SIZE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-pods-pending-timeout">
 <span id="config-kubernetes-worker-pods-pending-timeout"></span><h3>worker_pods_pending_timeout<a class="headerlink" href="#worker-pods-pending-timeout" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>How long in seconds a worker can be in Pending before it is considered a failure</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">300</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__WORKER_PODS_PENDING_TIMEOUT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-pods-pending-timeout-batch-size">
 <span id="config-kubernetes-worker-pods-pending-timeout-batch-size"></span><h3>worker_pods_pending_timeout_batch_size<a class="headerlink" href="#worker-pods-pending-timeout-batch-size" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>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 <code class="docutils literal notranslate"><span class="pre">multi_namespace_mode</span></code>.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">100</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__WORKER_PODS_PENDING_TIMEOUT_BATCH_SIZE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-pods-pending-timeout-check-interval">
 <span id="config-kubernetes-worker-pods-pending-timeout-check-interval"></span><h3>worker_pods_pending_timeout_check_interval<a class="headerlink" href="#worker-pods-pending-timeout-check-interval" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>How often in seconds to check if Pending workers have exceeded their timeouts</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">120</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__KUBERNETES__WORKER_PODS_PENDING_TIMEOUT_CHECK_INTERVAL</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="lineage">
 <span id="config-lineage"></span><h2><a class="toc-backref" href="#id20">[lineage]</a><a class="headerlink" href="#lineage" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="backend">
 <span id="config-lineage-backend"></span><h3>backend<a class="headerlink" href="#backend" title="Permalink to this headline">¶</a></h3>
 <p>what lineage backend to use</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LINEAGE__BACKEND</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="logging">
 <span id="config-logging"></span><h2><a class="toc-backref" href="#id21">[logging]</a><a class="headerlink" href="#logging" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="base-log-folder">
 <span id="config-logging-base-log-folder"></span><h3>base_log_folder<a class="headerlink" href="#base-log-folder" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>The folder where airflow should store its log files
 This path must be absolute</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{AIRFLOW_HOME}/logs</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__BASE_LOG_FOLDER</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="colored-console-log">
 <span id="config-logging-colored-console-log"></span><h3>colored_console_log<a class="headerlink" href="#colored-console-log" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Flag to enable/disable Colored logs in Console
 Colour the logs when the controlling terminal is a TTY.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__COLORED_CONSOLE_LOG</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="colored-formatter-class">
 <span id="config-logging-colored-formatter-class"></span><h3>colored_formatter_class<a class="headerlink" href="#colored-formatter-class" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow.utils.log.colored_log.CustomTTYColoredFormatter</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__COLORED_FORMATTER_CLASS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="colored-log-format">
 <span id="config-logging-colored-log-format"></span><h3>colored_log_format<a class="headerlink" href="#colored-log-format" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Log format for when Colored logs is enabled</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">[%%(blue)s%%(asctime)s%%(reset)s]</span> <span class="pre">{%%(blue)s%%(filename)s:%%(reset)s%%(lineno)d}</span> <span class="pre">%%(log_color)s%%(levelname)s%%(reset)s</span> <span class="pre">-</span> <span class="pre">%%(log_color)s%%(message)s%%(reset)s</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__COLORED_LOG_FORMAT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dag-processor-manager-log-location">
 <span id="config-logging-dag-processor-manager-log-location"></span><h3>dag_processor_manager_log_location<a class="headerlink" href="#dag-processor-manager-log-location" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>full path of dag_processor_manager logfile</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{AIRFLOW_HOME}/logs/dag_processor_manager/dag_processor_manager.log</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__DAG_PROCESSOR_MANAGER_LOG_LOCATION</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="encrypt-s3-logs">
 <span id="config-logging-encrypt-s3-logs"></span><h3>encrypt_s3_logs<a class="headerlink" href="#encrypt-s3-logs" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Use server-side encryption for logs stored in S3</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__ENCRYPT_S3_LOGS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="extra-loggers">
 <span id="config-logging-extra-loggers"></span><h3>extra_loggers<a class="headerlink" href="#extra-loggers" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>A comma-separated list of third-party logger names that will be configured to print messages to
 consoles.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__EXTRA_LOGGERS</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">connexion,sqlalchemy</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="fab-logging-level">
 <span id="config-logging-fab-logging-level"></span><h3>fab_logging_level<a class="headerlink" href="#fab-logging-level" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Logging level for Flask-appbuilder UI.</p>
 <p>Supported values: <code class="docutils literal notranslate"><span class="pre">CRITICAL</span></code>, <code class="docutils literal notranslate"><span class="pre">ERROR</span></code>, <code class="docutils literal notranslate"><span class="pre">WARNING</span></code>, <code class="docutils literal notranslate"><span class="pre">INFO</span></code>, <code class="docutils literal notranslate"><span class="pre">DEBUG</span></code>.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">WARN</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__FAB_LOGGING_LEVEL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="config-logging-google-key-path">
 <span id="id2"></span><h3>google_key_path<a class="headerlink" href="#config-logging-google-key-path" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Path to Google Credential JSON file. If omitted, authorization based on <a class="reference external" href="https://cloud.google.com/docs/authentication/production#finding_credentials_automatically">the Application Default
 Credentials</a> will
 be used.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__GOOGLE_KEY_PATH</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="log-filename-template">
 <span id="config-logging-log-filename-template"></span><h3>log_filename_template<a class="headerlink" href="#log-filename-template" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Formatting for how airflow generates file names/paths for each task run.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{{</span> <span class="pre">ti.dag_id</span> <span class="pre">}}/{{</span> <span class="pre">ti.task_id</span> <span class="pre">}}/{{</span> <span class="pre">ts</span> <span class="pre">}}/{{</span> <span class="pre">try_number</span> <span class="pre">}}.log</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__LOG_FILENAME_TEMPLATE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="log-format">
 <span id="config-logging-log-format"></span><h3>log_format<a class="headerlink" href="#log-format" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Format of Log line</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">[%%(asctime)s]</span> <span class="pre">{%%(filename)s:%%(lineno)d}</span> <span class="pre">%%(levelname)s</span> <span class="pre">-</span> <span class="pre">%%(message)s</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__LOG_FORMAT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="log-processor-filename-template">
 <span id="config-logging-log-processor-filename-template"></span><h3>log_processor_filename_template<a class="headerlink" href="#log-processor-filename-template" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Formatting for how airflow generates file names for log</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{{</span> <span class="pre">filename</span> <span class="pre">}}.log</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__LOG_PROCESSOR_FILENAME_TEMPLATE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="logging-config-class">
 <span id="config-logging-logging-config-class"></span><h3>logging_config_class<a class="headerlink" href="#logging-config-class" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Logging class
 Specify the class that will specify the logging configuration
 This class has to be on the python classpath</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__LOGGING_CONFIG_CLASS</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">my.path.default_local_settings.LOGGING_CONFIG</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="logging-level">
 <span id="config-logging-logging-level"></span><h3>logging_level<a class="headerlink" href="#logging-level" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Logging level.</p>
 <p>Supported values: <code class="docutils literal notranslate"><span class="pre">CRITICAL</span></code>, <code class="docutils literal notranslate"><span class="pre">ERROR</span></code>, <code class="docutils literal notranslate"><span class="pre">WARNING</span></code>, <code class="docutils literal notranslate"><span class="pre">INFO</span></code>, <code class="docutils literal notranslate"><span class="pre">DEBUG</span></code>.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">INFO</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__LOGGING_LEVEL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="remote-base-log-folder">
 <span id="config-logging-remote-base-log-folder"></span><h3>remote_base_log_folder<a class="headerlink" href="#remote-base-log-folder" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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://”</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__REMOTE_BASE_LOG_FOLDER</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="remote-log-conn-id">
 <span id="config-logging-remote-log-conn-id"></span><h3>remote_log_conn_id<a class="headerlink" href="#remote-log-conn-id" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Users must supply an Airflow connection id that provides access to the storage
 location.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__REMOTE_LOG_CONN_ID</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="remote-logging">
 <span id="config-logging-remote-logging"></span><h3>remote_logging<a class="headerlink" href="#remote-logging" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__REMOTE_LOGGING</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="simple-log-format">
 <span id="config-logging-simple-log-format"></span><h3>simple_log_format<a class="headerlink" href="#simple-log-format" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">%%(asctime)s</span> <span class="pre">%%(levelname)s</span> <span class="pre">-</span> <span class="pre">%%(message)s</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__SIMPLE_LOG_FORMAT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="task-log-prefix-template">
 <span id="config-logging-task-log-prefix-template"></span><h3>task_log_prefix_template<a class="headerlink" href="#task-log-prefix-template" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Specify prefix pattern like mentioned below with stream handler TaskHandlerWithCustomFormatter</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__TASK_LOG_PREFIX_TEMPLATE</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{ti.dag_id}-{ti.task_id}-{execution_date}-{try_number}</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="task-log-reader">
 <span id="config-logging-task-log-reader"></span><h3>task_log_reader<a class="headerlink" href="#task-log-reader" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Name of handler to read task instance logs.
 Defaults to use <code class="docutils literal notranslate"><span class="pre">task</span></code> handler.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">task</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__LOGGING__TASK_LOG_READER</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="metrics">
 <span id="config-metrics"></span><h2><a class="toc-backref" href="#id22">[metrics]</a><a class="headerlink" href="#metrics" title="Permalink to this headline">¶</a></h2>
 <p>StatsD (<a class="reference external" href="https://github.com/etsy/statsd">https://github.com/etsy/statsd</a>) integration settings.</p>
 <div class="section" id="stat-name-handler">
 <span id="config-metrics-stat-name-handler"></span><h3>stat_name_handler<a class="headerlink" href="#stat-name-handler" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>A function that validate the statsd stat name, apply changes to the stat name if necessary and return
 the transformed stat name.</p>
 <p>The function should have the following signature:
 def func_name(stat_name: str) -&gt; str:</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__METRICS__STAT_NAME_HANDLER</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="statsd-allow-list">
 <span id="config-metrics-statsd-allow-list"></span><h3>statsd_allow_list<a class="headerlink" href="#statsd-allow-list" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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”)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__METRICS__STATSD_ALLOW_LIST</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="statsd-custom-client-path">
 <span id="config-metrics-statsd-custom-client-path"></span><h3>statsd_custom_client_path<a class="headerlink" href="#statsd-custom-client-path" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__METRICS__STATSD_CUSTOM_CLIENT_PATH</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="statsd-datadog-enabled">
 <span id="config-metrics-statsd-datadog-enabled"></span><h3>statsd_datadog_enabled<a class="headerlink" href="#statsd-datadog-enabled" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>To enable datadog integration to send airflow metrics.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__METRICS__STATSD_DATADOG_ENABLED</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="statsd-datadog-tags">
 <span id="config-metrics-statsd-datadog-tags"></span><h3>statsd_datadog_tags<a class="headerlink" href="#statsd-datadog-tags" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>List of datadog tags attached to all metrics(e.g: key1:value1,key2:value2)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__METRICS__STATSD_DATADOG_TAGS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="statsd-host">
 <span id="config-metrics-statsd-host"></span><h3>statsd_host<a class="headerlink" href="#statsd-host" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">localhost</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__METRICS__STATSD_HOST</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="statsd-on">
 <span id="config-metrics-statsd-on"></span><h3>statsd_on<a class="headerlink" href="#statsd-on" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Enables sending metrics to StatsD.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__METRICS__STATSD_ON</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="statsd-port">
 <span id="config-metrics-statsd-port"></span><h3>statsd_port<a class="headerlink" href="#statsd-port" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">8125</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__METRICS__STATSD_PORT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="statsd-prefix">
 <span id="config-metrics-statsd-prefix"></span><h3>statsd_prefix<a class="headerlink" href="#statsd-prefix" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__METRICS__STATSD_PREFIX</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="operators">
 <span id="config-operators"></span><h2><a class="toc-backref" href="#id23">[operators]</a><a class="headerlink" href="#operators" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="allow-illegal-arguments">
 <span id="config-operators-allow-illegal-arguments"></span><h3>allow_illegal_arguments<a class="headerlink" href="#allow-illegal-arguments" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__OPERATORS__ALLOW_ILLEGAL_ARGUMENTS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-cpus">
 <span id="config-operators-default-cpus"></span><h3>default_cpus<a class="headerlink" href="#default-cpus" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__OPERATORS__DEFAULT_CPUS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-disk">
 <span id="config-operators-default-disk"></span><h3>default_disk<a class="headerlink" href="#default-disk" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">512</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__OPERATORS__DEFAULT_DISK</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-gpus">
 <span id="config-operators-default-gpus"></span><h3>default_gpus<a class="headerlink" href="#default-gpus" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">0</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__OPERATORS__DEFAULT_GPUS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-owner">
 <span id="config-operators-default-owner"></span><h3>default_owner<a class="headerlink" href="#default-owner" title="Permalink to this headline">¶</a></h3>
 <p>The default owner assigned to each new operator, unless
 provided explicitly or passed via <code class="docutils literal notranslate"><span class="pre">default_args</span></code></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__OPERATORS__DEFAULT_OWNER</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-queue">
 <span id="config-operators-default-queue"></span><h3>default_queue<a class="headerlink" href="#default-queue" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>Default queue that tasks get assigned to and that worker listen on.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">default</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__OPERATORS__DEFAULT_QUEUE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-ram">
 <span id="config-operators-default-ram"></span><h3>default_ram<a class="headerlink" href="#default-ram" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">512</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__OPERATORS__DEFAULT_RAM</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="scheduler">
 <span id="config-scheduler"></span><h2><a class="toc-backref" href="#id24">[scheduler]</a><a class="headerlink" href="#scheduler" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="allow-trigger-in-future">
 <span id="config-scheduler-allow-trigger-in-future"></span><h3>allow_trigger_in_future<a class="headerlink" href="#allow-trigger-in-future" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.8.</span></p>
 </div>
 <p>Allow externally triggered DagRuns for Execution Dates in the future
 Only has effect if schedule_interval is set to None in DAG</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__ALLOW_TRIGGER_IN_FUTURE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="catchup-by-default">
 <span id="config-scheduler-catchup-by-default"></span><h3>catchup_by_default<a class="headerlink" href="#catchup-by-default" title="Permalink to this headline">¶</a></h3>
 <p>Turn off scheduler catchup by setting this to <code class="docutils literal notranslate"><span class="pre">False</span></code>.
 Default behavior is unchanged and
 Command Line Backfills still work, but the scheduler
 will not do scheduler catchup if this is <code class="docutils literal notranslate"><span class="pre">False</span></code>,
 however it can be set on a per DAG basis in the
 DAG definition (catchup)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__CATCHUP_BY_DEFAULT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="child-process-log-directory">
 <span id="config-scheduler-child-process-log-directory"></span><h3>child_process_log_directory<a class="headerlink" href="#child-process-log-directory" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{AIRFLOW_HOME}/logs/scheduler</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__CHILD_PROCESS_LOG_DIRECTORY</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="clean-tis-without-dagrun-interval">
 <span id="config-scheduler-clean-tis-without-dagrun-interval"></span><h3>clean_tis_without_dagrun_interval<a class="headerlink" href="#clean-tis-without-dagrun-interval" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>How often (in seconds) to check and tidy up ‘running’ TaskInstancess
 that no longer have a matching DagRun</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>float</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">15.0</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__CLEAN_TIS_WITHOUT_DAGRUN_INTERVAL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dag-dir-list-interval">
 <span id="config-scheduler-dag-dir-list-interval"></span><h3>dag_dir_list_interval<a class="headerlink" href="#dag-dir-list-interval" title="Permalink to this headline">¶</a></h3>
 <p>How often (in seconds) to scan the DAGs directory for new files. Default to 5 minutes.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">300</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__DAG_DIR_LIST_INTERVAL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dependency-detector">
 <span id="config-scheduler-dependency-detector"></span><h3>dependency_detector<a class="headerlink" href="#dependency-detector" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>DAG dependency detector class to use</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow.serialization.serialized_objects.DependencyDetector</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__DEPENDENCY_DETECTOR</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="file-parsing-sort-mode">
 <span id="config-scheduler-file-parsing-sort-mode"></span><h3>file_parsing_sort_mode<a class="headerlink" href="#file-parsing-sort-mode" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>One of <code class="docutils literal notranslate"><span class="pre">modified_time</span></code>, <code class="docutils literal notranslate"><span class="pre">random_seeded_by_host</span></code> and <code class="docutils literal notranslate"><span class="pre">alphabetical</span></code>.
 The scheduler will list and sort the dag files to decide the parsing order.</p>
 <ul class="simple">
 <li><p><code class="docutils literal notranslate"><span class="pre">modified_time</span></code>: Sort by modified time of the files. This is useful on large scale to parse the
 recently modified DAGs first.</p></li>
 <li><p><code class="docutils literal notranslate"><span class="pre">random_seeded_by_host</span></code>: 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.</p></li>
 <li><p><code class="docutils literal notranslate"><span class="pre">alphabetical</span></code>: Sort by filename</p></li>
 </ul>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">modified_time</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__FILE_PARSING_SORT_MODE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="job-heartbeat-sec">
 <span id="config-scheduler-job-heartbeat-sec"></span><h3>job_heartbeat_sec<a class="headerlink" href="#job-heartbeat-sec" title="Permalink to this headline">¶</a></h3>
 <p>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).</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">5</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__JOB_HEARTBEAT_SEC</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="max-dagruns-per-loop-to-schedule">
 <span id="config-scheduler-max-dagruns-per-loop-to-schedule"></span><h3>max_dagruns_per_loop_to_schedule<a class="headerlink" href="#max-dagruns-per-loop-to-schedule" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>How many DagRuns should a scheduler examine (and lock) when scheduling
 and queuing tasks.</p>
 <div class="admonition seealso">
 <p class="admonition-title">See also</p>
 <p><a class="reference internal" href="concepts/scheduler.html#scheduler-ha-tunables"><span class="std std-ref">Scheduler Configuration options</span></a></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">20</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__MAX_DAGRUNS_PER_LOOP_TO_SCHEDULE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="max-dagruns-to-create-per-loop">
 <span id="config-scheduler-max-dagruns-to-create-per-loop"></span><h3>max_dagruns_to_create_per_loop<a class="headerlink" href="#max-dagruns-to-create-per-loop" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Max number of DAGs to create DagRuns for per scheduler loop.</p>
 <div class="admonition seealso">
 <p class="admonition-title">See also</p>
 <p><a class="reference internal" href="concepts/scheduler.html#scheduler-ha-tunables"><span class="std std-ref">Scheduler Configuration options</span></a></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">10</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__MAX_DAGRUNS_TO_CREATE_PER_LOOP</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="max-tis-per-query">
 <span id="config-scheduler-max-tis-per-query"></span><h3>max_tis_per_query<a class="headerlink" href="#max-tis-per-query" title="Permalink to this headline">¶</a></h3>
 <p>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)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">512</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__MAX_TIS_PER_QUERY</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="min-file-process-interval">
 <span id="config-scheduler-min-file-process-interval"></span><h3>min_file_process_interval<a class="headerlink" href="#min-file-process-interval" title="Permalink to this headline">¶</a></h3>
 <p>Number of seconds after which a DAG file is parsed. The DAG file is parsed every
 <code class="docutils literal notranslate"><span class="pre">min_file_process_interval</span></code> number of seconds. Updates to DAGs are reflected after
 this interval. Keeping this number low will increase CPU usage.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">30</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__MIN_FILE_PROCESS_INTERVAL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="num-runs">
 <span id="config-scheduler-num-runs"></span><h3>num_runs<a class="headerlink" href="#num-runs" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.6.</span></p>
 </div>
 <p>The number of times to try to schedule each DAG file
 -1 indicates unlimited number</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">-1</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__NUM_RUNS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="orphaned-tasks-check-interval">
 <span id="config-scheduler-orphaned-tasks-check-interval"></span><h3>orphaned_tasks_check_interval<a class="headerlink" href="#orphaned-tasks-check-interval" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>How often (in seconds) should the scheduler check for orphaned tasks and SchedulerJobs</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>float</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">300.0</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__ORPHANED_TASKS_CHECK_INTERVAL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="parsing-processes">
 <span id="config-scheduler-parsing-processes"></span><h3>parsing_processes<a class="headerlink" href="#parsing-processes" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.14.</span></p>
 </div>
 <p>The scheduler can run multiple processes in parallel to parse dags.
 This defines how many processes will run.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">2</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__PARSING_PROCESSES</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="pool-metrics-interval">
 <span id="config-scheduler-pool-metrics-interval"></span><h3>pool_metrics_interval<a class="headerlink" href="#pool-metrics-interval" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>How often (in seconds) should pool usage stats be sent to statsd (if statsd_on is enabled)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>float</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">5.0</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__POOL_METRICS_INTERVAL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="print-stats-interval">
 <span id="config-scheduler-print-stats-interval"></span><h3>print_stats_interval<a class="headerlink" href="#print-stats-interval" title="Permalink to this headline">¶</a></h3>
 <p>How often should stats be printed to the logs. Setting to 0 will disable printing stats</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">30</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__PRINT_STATS_INTERVAL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="processor-poll-interval">
 <span id="config-scheduler-processor-poll-interval"></span><h3>processor_poll_interval<a class="headerlink" href="#processor-poll-interval" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.6.</span></p>
 </div>
 <p>The number of seconds to wait between consecutive DAG file processing</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__PROCESSOR_POLL_INTERVAL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="schedule-after-task-execution">
 <span id="config-scheduler-schedule-after-task-execution"></span><h3>schedule_after_task_execution<a class="headerlink" href="#schedule-after-task-execution" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__SCHEDULE_AFTER_TASK_EXECUTION</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="scheduler-health-check-threshold">
 <span id="config-scheduler-scheduler-health-check-threshold"></span><h3>scheduler_health_check_threshold<a class="headerlink" href="#scheduler-health-check-threshold" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.2.</span></p>
 </div>
 <p>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</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">30</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__SCHEDULER_HEALTH_CHECK_THRESHOLD</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="scheduler-heartbeat-sec">
 <span id="config-scheduler-scheduler-heartbeat-sec"></span><h3>scheduler_heartbeat_sec<a class="headerlink" href="#scheduler-heartbeat-sec" title="Permalink to this headline">¶</a></h3>
 <p>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).</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">5</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__SCHEDULER_HEARTBEAT_SEC</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="scheduler-zombie-task-threshold">
 <span id="config-scheduler-scheduler-zombie-task-threshold"></span><h3>scheduler_zombie_task_threshold<a class="headerlink" href="#scheduler-zombie-task-threshold" title="Permalink to this headline">¶</a></h3>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">300</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__SCHEDULER_ZOMBIE_TASK_THRESHOLD</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="use-job-schedule">
 <span id="config-scheduler-use-job-schedule"></span><h3>use_job_schedule<a class="headerlink" href="#use-job-schedule" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.2.</span></p>
 </div>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__USE_JOB_SCHEDULE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="use-row-level-locking">
 <span id="config-scheduler-use-row-level-locking"></span><h3>use_row_level_locking<a class="headerlink" href="#use-row-level-locking" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Should the scheduler issue <code class="docutils literal notranslate"><span class="pre">SELECT</span> <span class="pre">...</span> <span class="pre">FOR</span> <span class="pre">UPDATE</span></code> in relevant queries.
 If this is set to False then you should not run more than a single
 scheduler at once</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SCHEDULER__USE_ROW_LEVEL_LOCKING</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="max-threads-deprecated">
 <span id="config-scheduler-max-threads"></span><h3>max_threads (Deprecated)<a class="headerlink" href="#max-threads-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 1.10.14: </span>The option has been moved to <a class="reference internal" href="#config-scheduler-parsing-processes"><span class="std std-ref">scheduler.parsing_processes</span></a></p>
 </div>
 </div>
 <div class="section" id="stat-name-handler-deprecated">
 <span id="config-scheduler-stat-name-handler"></span><h3>stat_name_handler (Deprecated)<a class="headerlink" href="#stat-name-handler-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-metrics-stat-name-handler"><span class="std std-ref">metrics.stat_name_handler</span></a></p>
 </div>
 </div>
 <div class="section" id="statsd-allow-list-deprecated">
 <span id="config-scheduler-statsd-allow-list"></span><h3>statsd_allow_list (Deprecated)<a class="headerlink" href="#statsd-allow-list-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-metrics-statsd-allow-list"><span class="std std-ref">metrics.statsd_allow_list</span></a></p>
 </div>
 </div>
 <div class="section" id="statsd-custom-client-path-deprecated">
 <span id="config-scheduler-statsd-custom-client-path"></span><h3>statsd_custom_client_path (Deprecated)<a class="headerlink" href="#statsd-custom-client-path-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-metrics-statsd-custom-client-path"><span class="std std-ref">metrics.statsd_custom_client_path</span></a></p>
 </div>
 </div>
 <div class="section" id="statsd-datadog-enabled-deprecated">
 <span id="config-scheduler-statsd-datadog-enabled"></span><h3>statsd_datadog_enabled (Deprecated)<a class="headerlink" href="#statsd-datadog-enabled-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-metrics-statsd-datadog-enabled"><span class="std std-ref">metrics.statsd_datadog_enabled</span></a></p>
 </div>
 </div>
 <div class="section" id="statsd-datadog-tags-deprecated">
 <span id="config-scheduler-statsd-datadog-tags"></span><h3>statsd_datadog_tags (Deprecated)<a class="headerlink" href="#statsd-datadog-tags-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-metrics-statsd-datadog-tags"><span class="std std-ref">metrics.statsd_datadog_tags</span></a></p>
 </div>
 </div>
 <div class="section" id="statsd-host-deprecated">
 <span id="config-scheduler-statsd-host"></span><h3>statsd_host (Deprecated)<a class="headerlink" href="#statsd-host-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-metrics-statsd-host"><span class="std std-ref">metrics.statsd_host</span></a></p>
 </div>
 </div>
 <div class="section" id="statsd-on-deprecated">
 <span id="config-scheduler-statsd-on"></span><h3>statsd_on (Deprecated)<a class="headerlink" href="#statsd-on-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-metrics-statsd-on"><span class="std std-ref">metrics.statsd_on</span></a></p>
 </div>
 </div>
 <div class="section" id="statsd-port-deprecated">
 <span id="config-scheduler-statsd-port"></span><h3>statsd_port (Deprecated)<a class="headerlink" href="#statsd-port-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-metrics-statsd-port"><span class="std std-ref">metrics.statsd_port</span></a></p>
 </div>
 </div>
 <div class="section" id="statsd-prefix-deprecated">
 <span id="config-scheduler-statsd-prefix"></span><h3>statsd_prefix (Deprecated)<a class="headerlink" href="#statsd-prefix-deprecated" title="Permalink to this headline">¶</a></h3>
 <div class="deprecated">
 <p><span class="versionmodified deprecated">Deprecated since version 2.0.0: </span>The option has been moved to <a class="reference internal" href="#config-metrics-statsd-prefix"><span class="std std-ref">metrics.statsd_prefix</span></a></p>
 </div>
 </div>
 </div>
 <div class="section" id="secrets">
 <span id="config-secrets"></span><h2><a class="toc-backref" href="#id25">[secrets]</a><a class="headerlink" href="#secrets" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="config-secrets-backend">
 <span id="id3"></span><h3>backend<a class="headerlink" href="#config-secrets-backend" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.10.</span></p>
 </div>
 <p>Full class name of secrets backend to enable (will precede env vars and metastore in search path)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SECRETS__BACKEND</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow.providers.amazon.aws.secrets.systems_manager.SystemsManagerParameterStoreBackend</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="backend-kwargs">
 <span id="config-secrets-backend-kwargs"></span><h3>backend_kwargs<a class="headerlink" href="#backend-kwargs" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.10.</span></p>
 </div>
 <p>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:
 <code class="docutils literal notranslate"><span class="pre">{{&quot;connections_prefix&quot;:</span> <span class="pre">&quot;/airflow/connections&quot;,</span> <span class="pre">&quot;profile_name&quot;:</span> <span class="pre">&quot;default&quot;}}</span></code></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SECRETS__BACKEND_KWARGS</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="sentry">
 <span id="config-sentry"></span><h2><a class="toc-backref" href="#id26">[sentry]</a><a class="headerlink" href="#sentry" title="Permalink to this headline">¶</a></h2>
 <p>Sentry (<a class="reference external" href="https://docs.sentry.io">https://docs.sentry.io</a>) integration. Here you can supply
 additional configuration options based on the Python platform. See:
 <a class="reference external" href="https://docs.sentry.io/error-reporting/configuration/?platform=python">https://docs.sentry.io/error-reporting/configuration/?platform=python</a>.
 Unsupported options: <code class="docutils literal notranslate"><span class="pre">integrations</span></code>, <code class="docutils literal notranslate"><span class="pre">in_app_include</span></code>, <code class="docutils literal notranslate"><span class="pre">in_app_exclude</span></code>,
 <code class="docutils literal notranslate"><span class="pre">ignore_errors</span></code>, <code class="docutils literal notranslate"><span class="pre">before_breadcrumb</span></code>, <code class="docutils literal notranslate"><span class="pre">before_send</span></code>, <code class="docutils literal notranslate"><span class="pre">transport</span></code>.</p>
 <div class="section" id="sentry-dsn">
 <span id="config-sentry-sentry-dsn"></span><h3>sentry_dsn<a class="headerlink" href="#sentry-dsn" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.6.</span></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SENTRY__SENTRY_DSN</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="sentry-on">
 <span id="config-sentry-sentry-on"></span><h3>sentry_on<a class="headerlink" href="#sentry-on" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>Enable error reporting to Sentry</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">false</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SENTRY__SENTRY_ON</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="smart-sensor">
 <span id="config-smart-sensor"></span><h2><a class="toc-backref" href="#id27">[smart_sensor]</a><a class="headerlink" href="#smart-sensor" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="sensors-enabled">
 <span id="config-smart-sensor-sensors-enabled"></span><h3>sensors_enabled<a class="headerlink" href="#sensors-enabled" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>comma separated sensor classes support in smart_sensor.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">NamedHivePartitionSensor</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMART_SENSOR__SENSORS_ENABLED</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="shard-code-upper-limit">
 <span id="config-smart-sensor-shard-code-upper-limit"></span><h3>shard_code_upper_limit<a class="headerlink" href="#shard-code-upper-limit" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p><cite>shard_code_upper_limit</cite> is the upper limit of <cite>shard_code</cite> value. The <cite>shard_code</cite> is generated
 by <cite>hashcode % shard_code_upper_limit</cite>.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">10000</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMART_SENSOR__SHARD_CODE_UPPER_LIMIT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="shards">
 <span id="config-smart-sensor-shards"></span><h3>shards<a class="headerlink" href="#shards" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>The number of running smart sensor processes for each service.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">5</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMART_SENSOR__SHARDS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="use-smart-sensor">
 <span id="config-smart-sensor-use-smart-sensor"></span><h3>use_smart_sensor<a class="headerlink" href="#use-smart-sensor" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>When <cite>use_smart_sensor</cite> is True, Airflow redirects multiple qualified sensor tasks to
 smart sensor task.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMART_SENSOR__USE_SMART_SENSOR</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="smtp">
 <span id="config-smtp"></span><h2><a class="toc-backref" href="#id28">[smtp]</a><a class="headerlink" href="#smtp" title="Permalink to this headline">¶</a></h2>
 <p>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</p>
 <div class="section" id="smtp-host">
 <span id="config-smtp-smtp-host"></span><h3>smtp_host<a class="headerlink" href="#smtp-host" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">localhost</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMTP__SMTP_HOST</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="smtp-mail-from">
 <span id="config-smtp-smtp-mail-from"></span><h3>smtp_mail_from<a class="headerlink" href="#smtp-mail-from" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow&#64;example.com</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMTP__SMTP_MAIL_FROM</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="smtp-password">
 <span id="config-smtp-smtp-password"></span><h3>smtp_password<a class="headerlink" href="#smtp-password" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variables</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMTP__SMTP_PASSWORD</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMTP__SMTP_PASSWORD_CMD</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMTP__SMTP_PASSWORD_SECRET</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="smtp-port">
 <span id="config-smtp-smtp-port"></span><h3>smtp_port<a class="headerlink" href="#smtp-port" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">25</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMTP__SMTP_PORT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="smtp-retry-limit">
 <span id="config-smtp-smtp-retry-limit"></span><h3>smtp_retry_limit<a class="headerlink" href="#smtp-retry-limit" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">5</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMTP__SMTP_RETRY_LIMIT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="smtp-ssl">
 <span id="config-smtp-smtp-ssl"></span><h3>smtp_ssl<a class="headerlink" href="#smtp-ssl" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMTP__SMTP_SSL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="smtp-starttls">
 <span id="config-smtp-smtp-starttls"></span><h3>smtp_starttls<a class="headerlink" href="#smtp-starttls" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMTP__SMTP_STARTTLS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="smtp-timeout">
 <span id="config-smtp-smtp-timeout"></span><h3>smtp_timeout<a class="headerlink" href="#smtp-timeout" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">30</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMTP__SMTP_TIMEOUT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="smtp-user">
 <span id="config-smtp-smtp-user"></span><h3>smtp_user<a class="headerlink" href="#smtp-user" title="Permalink to this headline">¶</a></h3>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__SMTP__SMTP_USER</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">airflow</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="section" id="webserver">
 <span id="config-webserver"></span><h2><a class="toc-backref" href="#id29">[webserver]</a><a class="headerlink" href="#webserver" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="access-logfile">
 <span id="config-webserver-access-logfile"></span><h3>access_logfile<a class="headerlink" href="#access-logfile" title="Permalink to this headline">¶</a></h3>
 <p>Log files for the gunicorn webserver. ‘-‘ means log to stderr.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">-</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__ACCESS_LOGFILE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="access-logformat">
 <span id="config-webserver-access-logformat"></span><h3>access_logformat<a class="headerlink" href="#access-logformat" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>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 - <a class="reference external" href="https://docs.gunicorn.org/en/stable/settings.html#access-log-format">https://docs.gunicorn.org/en/stable/settings.html#access-log-format</a></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__ACCESS_LOGFORMAT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="analytics-id">
 <span id="config-webserver-analytics-id"></span><h3>analytics_id<a class="headerlink" href="#analytics-id" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.5.</span></p>
 </div>
 <p>Unique ID of your account in the analytics tool</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__ANALYTICS_ID</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="analytics-tool">
 <span id="config-webserver-analytics-tool"></span><h3>analytics_tool<a class="headerlink" href="#analytics-tool" title="Permalink to this headline">¶</a></h3>
 <p>Send anonymous user activity to your analytics tool
 choose from google_analytics, segment, or metarouter</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__ANALYTICS_TOOL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="base-url">
 <span id="config-webserver-base-url"></span><h3>base_url<a class="headerlink" href="#base-url" title="Permalink to this headline">¶</a></h3>
 <p>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</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">http://localhost:8080</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__BASE_URL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="cookie-samesite">
 <span id="config-webserver-cookie-samesite"></span><h3>cookie_samesite<a class="headerlink" href="#cookie-samesite" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.3.</span></p>
 </div>
 <p>Set samesite policy on session cookie</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">Lax</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__COOKIE_SAMESITE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="cookie-secure">
 <span id="config-webserver-cookie-secure"></span><h3>cookie_secure<a class="headerlink" href="#cookie-secure" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.3.</span></p>
 </div>
 <p>Set secure flag on session cookie</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__COOKIE_SECURE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dag-default-view">
 <span id="config-webserver-dag-default-view"></span><h3>dag_default_view<a class="headerlink" href="#dag-default-view" title="Permalink to this headline">¶</a></h3>
 <p>Default DAG view. Valid values are: <code class="docutils literal notranslate"><span class="pre">tree</span></code>, <code class="docutils literal notranslate"><span class="pre">graph</span></code>, <code class="docutils literal notranslate"><span class="pre">duration</span></code>, <code class="docutils literal notranslate"><span class="pre">gantt</span></code>, <code class="docutils literal notranslate"><span class="pre">landing_times</span></code></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">tree</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__DAG_DEFAULT_VIEW</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="dag-orientation">
 <span id="config-webserver-dag-orientation"></span><h3>dag_orientation<a class="headerlink" href="#dag-orientation" title="Permalink to this headline">¶</a></h3>
 <p>Default DAG orientation. Valid values are:
 <code class="docutils literal notranslate"><span class="pre">LR</span></code> (Left-&gt;Right), <code class="docutils literal notranslate"><span class="pre">TB</span></code> (Top-&gt;Bottom), <code class="docutils literal notranslate"><span class="pre">RL</span></code> (Right-&gt;Left), <code class="docutils literal notranslate"><span class="pre">BT</span></code> (Bottom-&gt;Top)</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">LR</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__DAG_ORIENTATION</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-dag-run-display-number">
 <span id="config-webserver-default-dag-run-display-number"></span><h3>default_dag_run_display_number<a class="headerlink" href="#default-dag-run-display-number" title="Permalink to this headline">¶</a></h3>
 <p>Default dagrun to show in UI</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">25</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__DEFAULT_DAG_RUN_DISPLAY_NUMBER</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-ui-timezone">
 <span id="config-webserver-default-ui-timezone"></span><h3>default_ui_timezone<a class="headerlink" href="#default-ui-timezone" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.10.</span></p>
 </div>
 <p>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</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">UTC</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__DEFAULT_UI_TIMEZONE</span></code></p>
 </dd>
 <dt class="field-even">Example</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">America/New_York</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="default-wrap">
 <span id="config-webserver-default-wrap"></span><h3>default_wrap<a class="headerlink" href="#default-wrap" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.4.</span></p>
 </div>
 <p>Default setting for wrap toggle on DAG code and TI log views.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__DEFAULT_WRAP</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="enable-proxy-fix">
 <span id="config-webserver-enable-proxy-fix"></span><h3>enable_proxy_fix<a class="headerlink" href="#enable-proxy-fix" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.1.</span></p>
 </div>
 <p>Enable werkzeug <code class="docutils literal notranslate"><span class="pre">ProxyFix</span></code> middleware for reverse proxy</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__ENABLE_PROXY_FIX</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="error-logfile">
 <span id="config-webserver-error-logfile"></span><h3>error_logfile<a class="headerlink" href="#error-logfile" title="Permalink to this headline">¶</a></h3>
 <p>Log files for the gunicorn webserver. ‘-‘ means log to stderr.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">-</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__ERROR_LOGFILE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="expose-config">
 <span id="config-webserver-expose-config"></span><h3>expose_config<a class="headerlink" href="#expose-config" title="Permalink to this headline">¶</a></h3>
 <p>Expose the configuration file in the web server</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__EXPOSE_CONFIG</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="expose-hostname">
 <span id="config-webserver-expose-hostname"></span><h3>expose_hostname<a class="headerlink" href="#expose-hostname" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.8.</span></p>
 </div>
 <p>Expose hostname in the web server</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__EXPOSE_HOSTNAME</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="expose-stacktrace">
 <span id="config-webserver-expose-stacktrace"></span><h3>expose_stacktrace<a class="headerlink" href="#expose-stacktrace" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.8.</span></p>
 </div>
 <p>Expose stacktrace in the web server</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__EXPOSE_STACKTRACE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="hide-paused-dags-by-default">
 <span id="config-webserver-hide-paused-dags-by-default"></span><h3>hide_paused_dags_by_default<a class="headerlink" href="#hide-paused-dags-by-default" title="Permalink to this headline">¶</a></h3>
 <p>By default, the webserver shows paused DAGs. Flip this to hide paused
 DAGs by default</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__HIDE_PAUSED_DAGS_BY_DEFAULT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="instance-name">
 <span id="config-webserver-instance-name"></span><h3>instance_name<a class="headerlink" href="#instance-name" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.1.0.</span></p>
 </div>
 <p>Sets a custom page title for the DAGs overview page and site title for all pages</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__INSTANCE_NAME</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="log-animation-speed">
 <span id="config-webserver-log-animation-speed"></span><h3>log_animation_speed<a class="headerlink" href="#log-animation-speed" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.8.</span></p>
 </div>
 <p>Animation speed for auto tailing log display.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1000</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__LOG_ANIMATION_SPEED</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="log-auto-tailing-offset">
 <span id="config-webserver-log-auto-tailing-offset"></span><h3>log_auto_tailing_offset<a class="headerlink" href="#log-auto-tailing-offset" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.8.</span></p>
 </div>
 <p>Distance away from page bottom to enable auto tailing.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">30</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__LOG_AUTO_TAILING_OFFSET</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="log-fetch-delay-sec">
 <span id="config-webserver-log-fetch-delay-sec"></span><h3>log_fetch_delay_sec<a class="headerlink" href="#log-fetch-delay-sec" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.8.</span></p>
 </div>
 <p>Time interval (in secs) to wait before next log fetching.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">2</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__LOG_FETCH_DELAY_SEC</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="log-fetch-timeout-sec">
 <span id="config-webserver-log-fetch-timeout-sec"></span><h3>log_fetch_timeout_sec<a class="headerlink" href="#log-fetch-timeout-sec" title="Permalink to this headline">¶</a></h3>
 <p>The amount of time (in secs) webserver will wait for initial handshake
 while fetching logs from other worker machine</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">5</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__LOG_FETCH_TIMEOUT_SEC</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="navbar-color">
 <span id="config-webserver-navbar-color"></span><h3>navbar_color<a class="headerlink" href="#navbar-color" title="Permalink to this headline">¶</a></h3>
 <p>Define the color of navigation bar</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">#fff</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__NAVBAR_COLOR</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="page-size">
 <span id="config-webserver-page-size"></span><h3>page_size<a class="headerlink" href="#page-size" title="Permalink to this headline">¶</a></h3>
 <p>Consistent page size across all listing views in the UI</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">100</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__PAGE_SIZE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="proxy-fix-x-for">
 <span id="config-webserver-proxy-fix-x-for"></span><h3>proxy_fix_x_for<a class="headerlink" href="#proxy-fix-x-for" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.7.</span></p>
 </div>
 <p>Number of values to trust for <code class="docutils literal notranslate"><span class="pre">X-Forwarded-For</span></code>.
 More info: <a class="reference external" href="https://werkzeug.palletsprojects.com/en/0.16.x/middleware/proxy_fix/">https://werkzeug.palletsprojects.com/en/0.16.x/middleware/proxy_fix/</a></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__PROXY_FIX_X_FOR</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="proxy-fix-x-host">
 <span id="config-webserver-proxy-fix-x-host"></span><h3>proxy_fix_x_host<a class="headerlink" href="#proxy-fix-x-host" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.7.</span></p>
 </div>
 <p>Number of values to trust for <code class="docutils literal notranslate"><span class="pre">X-Forwarded-Host</span></code></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__PROXY_FIX_X_HOST</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="proxy-fix-x-port">
 <span id="config-webserver-proxy-fix-x-port"></span><h3>proxy_fix_x_port<a class="headerlink" href="#proxy-fix-x-port" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.7.</span></p>
 </div>
 <p>Number of values to trust for <code class="docutils literal notranslate"><span class="pre">X-Forwarded-Port</span></code></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__PROXY_FIX_X_PORT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="proxy-fix-x-prefix">
 <span id="config-webserver-proxy-fix-x-prefix"></span><h3>proxy_fix_x_prefix<a class="headerlink" href="#proxy-fix-x-prefix" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.7.</span></p>
 </div>
 <p>Number of values to trust for <code class="docutils literal notranslate"><span class="pre">X-Forwarded-Prefix</span></code></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__PROXY_FIX_X_PREFIX</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="proxy-fix-x-proto">
 <span id="config-webserver-proxy-fix-x-proto"></span><h3>proxy_fix_x_proto<a class="headerlink" href="#proxy-fix-x-proto" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.7.</span></p>
 </div>
 <p>Number of values to trust for <code class="docutils literal notranslate"><span class="pre">X-Forwarded-Proto</span></code></p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__PROXY_FIX_X_PROTO</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="reload-on-plugin-change">
 <span id="config-webserver-reload-on-plugin-change"></span><h3>reload_on_plugin_change<a class="headerlink" href="#reload-on-plugin-change" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.11.</span></p>
 </div>
 <p>If set to True, Airflow will track files in plugins_folder directory. When it detects changes,
 then reload the gunicorn.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">False</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__RELOAD_ON_PLUGIN_CHANGE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="secret-key">
 <span id="config-webserver-secret-key"></span><h3>secret_key<a class="headerlink" href="#secret-key" title="Permalink to this headline">¶</a></h3>
 <p>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 <code class="docutils literal notranslate"><span class="pre">secret_key</span></code> otherwise
 one of them will error with “CSRF session token is missing”.</p>
 <dl class="field-list">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">{SECRET_KEY}</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variables</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__SECRET_KEY</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__SECRET_KEY_CMD</span></code></p>
 <p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__SECRET_KEY_SECRET</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="session-lifetime-minutes">
 <span id="config-webserver-session-lifetime-minutes"></span><h3>session_lifetime_minutes<a class="headerlink" href="#session-lifetime-minutes" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.13.</span></p>
 </div>
 <p>The UI cookie lifetime in minutes. User will be logged out from UI after
 <code class="docutils literal notranslate"><span class="pre">session_lifetime_minutes</span></code> of non-activity</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>integer</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">43200</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__SESSION_LIFETIME_MINUTES</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="show-recent-stats-for-completed-runs">
 <span id="config-webserver-show-recent-stats-for-completed-runs"></span><h3>show_recent_stats_for_completed_runs<a class="headerlink" href="#show-recent-stats-for-completed-runs" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 2.0.0.</span></p>
 </div>
 <p>‘Recent Tasks’ stats will show for old DagRuns if set</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__SHOW_RECENT_STATS_FOR_COMPLETED_RUNS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="update-fab-perms">
 <span id="config-webserver-update-fab-perms"></span><h3>update_fab_perms<a class="headerlink" href="#update-fab-perms" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.7.</span></p>
 </div>
 <p>Update FAB permissions and sync security manager roles
 on webserver startup</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__UPDATE_FAB_PERMS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="web-server-host">
 <span id="config-webserver-web-server-host"></span><h3>web_server_host<a class="headerlink" href="#web-server-host" title="Permalink to this headline">¶</a></h3>
 <p>The ip specified when starting the web server</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">0.0.0.0</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__WEB_SERVER_HOST</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="web-server-master-timeout">
 <span id="config-webserver-web-server-master-timeout"></span><h3>web_server_master_timeout<a class="headerlink" href="#web-server-master-timeout" title="Permalink to this headline">¶</a></h3>
 <p>Number of seconds the webserver waits before killing gunicorn master that doesn’t respond</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">120</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__WEB_SERVER_MASTER_TIMEOUT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="web-server-port">
 <span id="config-webserver-web-server-port"></span><h3>web_server_port<a class="headerlink" href="#web-server-port" title="Permalink to this headline">¶</a></h3>
 <p>The port on which to run the web server</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">8080</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__WEB_SERVER_PORT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="web-server-ssl-cert">
 <span id="config-webserver-web-server-ssl-cert"></span><h3>web_server_ssl_cert<a class="headerlink" href="#web-server-ssl-cert" title="Permalink to this headline">¶</a></h3>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__WEB_SERVER_SSL_CERT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="web-server-ssl-key">
 <span id="config-webserver-web-server-ssl-key"></span><h3>web_server_ssl_key<a class="headerlink" href="#web-server-ssl-key" title="Permalink to this headline">¶</a></h3>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">''</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__WEB_SERVER_SSL_KEY</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="web-server-worker-timeout">
 <span id="config-webserver-web-server-worker-timeout"></span><h3>web_server_worker_timeout<a class="headerlink" href="#web-server-worker-timeout" title="Permalink to this headline">¶</a></h3>
 <p>Number of seconds the gunicorn webserver waits before timing out on a worker</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">120</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__WEB_SERVER_WORKER_TIMEOUT</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-class">
 <span id="config-webserver-worker-class"></span><h3>worker_class<a class="headerlink" href="#worker-class" title="Permalink to this headline">¶</a></h3>
 <p>The worker class gunicorn should use. Choices include
 sync (default), eventlet, gevent</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">sync</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__WORKER_CLASS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-refresh-batch-size">
 <span id="config-webserver-worker-refresh-batch-size"></span><h3>worker_refresh_batch_size<a class="headerlink" href="#worker-refresh-batch-size" title="Permalink to this headline">¶</a></h3>
 <p>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.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">1</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__WORKER_REFRESH_BATCH_SIZE</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="worker-refresh-interval">
 <span id="config-webserver-worker-refresh-interval"></span><h3>worker_refresh_interval<a class="headerlink" href="#worker-refresh-interval" title="Permalink to this headline">¶</a></h3>
 <p>Number of seconds to wait before refreshing a batch of workers.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">6000</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__WORKER_REFRESH_INTERVAL</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="workers">
 <span id="config-webserver-workers"></span><h3>workers<a class="headerlink" href="#workers" title="Permalink to this headline">¶</a></h3>
 <p>Number of workers to run the Gunicorn web server</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>string</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">4</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__WORKERS</span></code></p>
 </dd>
 </dl>
 </div>
 <div class="section" id="x-frame-enabled">
 <span id="config-webserver-x-frame-enabled"></span><h3>x_frame_enabled<a class="headerlink" href="#x-frame-enabled" title="Permalink to this headline">¶</a></h3>
 <div class="versionadded">
 <p><span class="versionmodified added">New in version 1.10.8.</span></p>
 </div>
 <p>Allow the UI to be rendered in a frame</p>
 <dl class="field-list simple">
 <dt class="field-odd">Type</dt>
 <dd class="field-odd"><p>boolean</p>
 </dd>
 <dt class="field-even">Default</dt>
 <dd class="field-even"><p><code class="docutils literal notranslate"><span class="pre">True</span></code></p>
 </dd>
 <dt class="field-odd">Environment Variable</dt>
 <dd class="field-odd"><p><code class="docutils literal notranslate"><span class="pre">AIRFLOW__WEBSERVER__X_FRAME_ENABLED</span></code></p>
 </dd>
 </dl>
 </div>
 </div>
 </div>


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 <li><a class="reference internal" href="#task-track-started">task_track_started</a></li>
 <li><a class="reference internal" href="#worker-autoscale">worker_autoscale</a></li>
 <li><a class="reference internal" href="#worker-concurrency">worker_concurrency</a></li>
 <li><a class="reference internal" href="#worker-log-server-port">worker_log_server_port</a></li>
 <li><a class="reference internal" href="#worker-precheck">worker_precheck</a></li>
 <li><a class="reference internal" href="#worker-prefetch-multiplier">worker_prefetch_multiplier</a></li>
 <li><a class="reference internal" href="#worker-umask">worker_umask</a></li>
 <li><a class="reference internal" href="#default-queue-deprecated">default_queue (Deprecated)</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#celery-broker-transport-options">[celery_broker_transport_options]</a><ul>
 <li><a class="reference internal" href="#visibility-timeout">visibility_timeout</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#celery-kubernetes-executor">[celery_kubernetes_executor]</a><ul>
 <li><a class="reference internal" href="#kubernetes-queue">kubernetes_queue</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#cli">[cli]</a><ul>
 <li><a class="reference internal" href="#api-client">api_client</a></li>
 <li><a class="reference internal" href="#endpoint-url">endpoint_url</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#core">[core]</a><ul>
 <li><a class="reference internal" href="#check-slas">check_slas</a></li>
 <li><a class="reference internal" href="#dag-concurrency">dag_concurrency</a></li>
 <li><a class="reference internal" href="#dag-discovery-safe-mode">dag_discovery_safe_mode</a></li>
 <li><a class="reference internal" href="#dag-file-processor-timeout">dag_file_processor_timeout</a></li>
 <li><a class="reference internal" href="#dag-run-conf-overrides-params">dag_run_conf_overrides_params</a></li>
 <li><a class="reference internal" href="#dagbag-import-error-traceback-depth">dagbag_import_error_traceback_depth</a></li>
 <li><a class="reference internal" href="#dagbag-import-error-tracebacks">dagbag_import_error_tracebacks</a></li>
 <li><a class="reference internal" href="#dagbag-import-timeout">dagbag_import_timeout</a></li>
 <li><a class="reference internal" href="#dags-are-paused-at-creation">dags_are_paused_at_creation</a></li>
 <li><a class="reference internal" href="#dags-folder">dags_folder</a></li>
 <li><a class="reference internal" href="#default-impersonation">default_impersonation</a></li>
 <li><a class="reference internal" href="#default-task-retries">default_task_retries</a></li>
 <li><a class="reference internal" href="#default-timezone">default_timezone</a></li>
 <li><a class="reference internal" href="#donot-pickle">donot_pickle</a></li>
 <li><a class="reference internal" href="#enable-xcom-pickling">enable_xcom_pickling</a></li>
 <li><a class="reference internal" href="#execute-tasks-new-python-interpreter">execute_tasks_new_python_interpreter</a></li>
 <li><a class="reference internal" href="#executor">executor</a></li>
 <li><a class="reference internal" href="#fernet-key">fernet_key</a></li>
 <li><a class="reference internal" href="#hide-sensitive-var-conn-fields">hide_sensitive_var_conn_fields</a></li>
 <li><a class="reference internal" href="#hostname-callable">hostname_callable</a></li>
 <li><a class="reference internal" href="#killed-task-cleanup-time">killed_task_cleanup_time</a></li>
 <li><a class="reference internal" href="#lazy-discover-providers">lazy_discover_providers</a></li>
 <li><a class="reference internal" href="#lazy-load-plugins">lazy_load_plugins</a></li>
 <li><a class="reference internal" href="#load-default-connections">load_default_connections</a></li>
 <li><a class="reference internal" href="#load-examples">load_examples</a></li>
 <li><a class="reference internal" href="#max-active-runs-per-dag">max_active_runs_per_dag</a></li>
 <li><a class="reference internal" href="#max-db-retries">max_db_retries</a></li>
 <li><a class="reference internal" href="#max-num-rendered-ti-fields-per-task">max_num_rendered_ti_fields_per_task</a></li>
 <li><a class="reference internal" href="#max-queued-runs-per-dag">max_queued_runs_per_dag</a></li>
 <li><a class="reference internal" href="#min-serialized-dag-fetch-interval">min_serialized_dag_fetch_interval</a></li>
 <li><a class="reference internal" href="#min-serialized-dag-update-interval">min_serialized_dag_update_interval</a></li>
 <li><a class="reference internal" href="#parallelism">parallelism</a></li>
 <li><a class="reference internal" href="#plugins-folder">plugins_folder</a></li>
 <li><a class="reference internal" href="#security">security</a></li>
 <li><a class="reference internal" href="#sensitive-var-conn-names">sensitive_var_conn_names</a></li>
 <li><a class="reference internal" href="#sql-alchemy-conn">sql_alchemy_conn</a></li>
 <li><a class="reference internal" href="#sql-alchemy-connect-args">sql_alchemy_connect_args</a></li>
 <li><a class="reference internal" href="#sql-alchemy-max-overflow">sql_alchemy_max_overflow</a></li>
 <li><a class="reference internal" href="#sql-alchemy-pool-enabled">sql_alchemy_pool_enabled</a></li>
 <li><a class="reference internal" href="#sql-alchemy-pool-pre-ping">sql_alchemy_pool_pre_ping</a></li>
 <li><a class="reference internal" href="#sql-alchemy-pool-recycle">sql_alchemy_pool_recycle</a></li>
 <li><a class="reference internal" href="#sql-alchemy-pool-size">sql_alchemy_pool_size</a></li>
 <li><a class="reference internal" href="#sql-alchemy-schema">sql_alchemy_schema</a></li>
 <li><a class="reference internal" href="#sql-engine-collation-for-ids">sql_engine_collation_for_ids</a></li>
 <li><a class="reference internal" href="#sql-engine-encoding">sql_engine_encoding</a></li>
 <li><a class="reference internal" href="#store-dag-code">store_dag_code</a></li>
 <li><a class="reference internal" href="#task-runner">task_runner</a></li>
 <li><a class="reference internal" href="#unit-test-mode">unit_test_mode</a></li>
 <li><a class="reference internal" href="#xcom-backend">xcom_backend</a></li>
 <li><a class="reference internal" href="#base-log-folder-deprecated">base_log_folder (Deprecated)</a></li>
 <li><a class="reference internal" href="#colored-console-log-deprecated">colored_console_log (Deprecated)</a></li>
 <li><a class="reference internal" href="#colored-formatter-class-deprecated">colored_formatter_class (Deprecated)</a></li>
 <li><a class="reference internal" href="#colored-log-format-deprecated">colored_log_format (Deprecated)</a></li>
 <li><a class="reference internal" href="#dag-processor-manager-log-location-deprecated">dag_processor_manager_log_location (Deprecated)</a></li>
 <li><a class="reference internal" href="#encrypt-s3-logs-deprecated">encrypt_s3_logs (Deprecated)</a></li>
 <li><a class="reference internal" href="#fab-logging-level-deprecated">fab_logging_level (Deprecated)</a></li>
 <li><a class="reference internal" href="#log-filename-template-deprecated">log_filename_template (Deprecated)</a></li>
 <li><a class="reference internal" href="#log-format-deprecated">log_format (Deprecated)</a></li>
 <li><a class="reference internal" href="#log-processor-filename-template-deprecated">log_processor_filename_template (Deprecated)</a></li>
 <li><a class="reference internal" href="#logging-config-class-deprecated">logging_config_class (Deprecated)</a></li>
 <li><a class="reference internal" href="#logging-level-deprecated">logging_level (Deprecated)</a></li>
 <li><a class="reference internal" href="#remote-base-log-folder-deprecated">remote_base_log_folder (Deprecated)</a></li>
 <li><a class="reference internal" href="#remote-log-conn-id-deprecated">remote_log_conn_id (Deprecated)</a></li>
 <li><a class="reference internal" href="#remote-logging-deprecated">remote_logging (Deprecated)</a></li>
 <li><a class="reference internal" href="#simple-log-format-deprecated">simple_log_format (Deprecated)</a></li>
 <li><a class="reference internal" href="#task-log-prefix-template-deprecated">task_log_prefix_template (Deprecated)</a></li>
 <li><a class="reference internal" href="#task-log-reader-deprecated">task_log_reader (Deprecated)</a></li>
 <li><a class="reference internal" href="#worker-precheck-deprecated">worker_precheck (Deprecated)</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#dask">[dask]</a><ul>
 <li><a class="reference internal" href="#cluster-address">cluster_address</a></li>
 <li><a class="reference internal" href="#tls-ca">tls_ca</a></li>
 <li><a class="reference internal" href="#tls-cert">tls_cert</a></li>
 <li><a class="reference internal" href="#tls-key">tls_key</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#debug">[debug]</a><ul>
 <li><a class="reference internal" href="#fail-fast">fail_fast</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#elasticsearch">[elasticsearch]</a><ul>
 <li><a class="reference internal" href="#end-of-log-mark">end_of_log_mark</a></li>
 <li><a class="reference internal" href="#frontend">frontend</a></li>
 <li><a class="reference internal" href="#config-elasticsearch-host">host</a></li>
 <li><a class="reference internal" href="#host-field">host_field</a></li>
 <li><a class="reference internal" href="#json-fields">json_fields</a></li>
 <li><a class="reference internal" href="#json-format">json_format</a></li>
 <li><a class="reference internal" href="#log-id-template">log_id_template</a></li>
 <li><a class="reference internal" href="#offset-field">offset_field</a></li>
 <li><a class="reference internal" href="#write-stdout">write_stdout</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#elasticsearch-configs">[elasticsearch_configs]</a><ul>
 <li><a class="reference internal" href="#use-ssl">use_ssl</a></li>
 <li><a class="reference internal" href="#verify-certs">verify_certs</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#email">[email]</a><ul>
 <li><a class="reference internal" href="#default-email-on-failure">default_email_on_failure</a></li>
 <li><a class="reference internal" href="#default-email-on-retry">default_email_on_retry</a></li>
 <li><a class="reference internal" href="#email-backend">email_backend</a></li>
 <li><a class="reference internal" href="#email-conn-id">email_conn_id</a></li>
 <li><a class="reference internal" href="#html-content-template">html_content_template</a></li>
 <li><a class="reference internal" href="#subject-template">subject_template</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#github-enterprise">[github_enterprise]</a><ul>
 <li><a class="reference internal" href="#api-rev">api_rev</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#hive">[hive]</a><ul>
 <li><a class="reference internal" href="#default-hive-mapred-queue">default_hive_mapred_queue</a></li>
 <li><a class="reference internal" href="#mapred-job-name-template">mapred_job_name_template</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#kerberos">[kerberos]</a><ul>
 <li><a class="reference internal" href="#ccache">ccache</a></li>
 <li><a class="reference internal" href="#keytab">keytab</a></li>
 <li><a class="reference internal" href="#kinit-path">kinit_path</a></li>
 <li><a class="reference internal" href="#principal">principal</a></li>
 <li><a class="reference internal" href="#reinit-frequency">reinit_frequency</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#kubernetes">[kubernetes]</a><ul>
 <li><a class="reference internal" href="#cluster-context">cluster_context</a></li>
 <li><a class="reference internal" href="#config-file">config_file</a></li>
 <li><a class="reference internal" href="#delete-option-kwargs">delete_option_kwargs</a></li>
 <li><a class="reference internal" href="#delete-worker-pods">delete_worker_pods</a></li>
 <li><a class="reference internal" href="#delete-worker-pods-on-failure">delete_worker_pods_on_failure</a></li>
 <li><a class="reference internal" href="#enable-tcp-keepalive">enable_tcp_keepalive</a></li>
 <li><a class="reference internal" href="#in-cluster">in_cluster</a></li>
 <li><a class="reference internal" href="#kube-client-request-args">kube_client_request_args</a></li>
 <li><a class="reference internal" href="#multi-namespace-mode">multi_namespace_mode</a></li>
 <li><a class="reference internal" href="#namespace">namespace</a></li>
 <li><a class="reference internal" href="#pod-template-file">pod_template_file</a></li>
 <li><a class="reference internal" href="#tcp-keep-cnt">tcp_keep_cnt</a></li>
 <li><a class="reference internal" href="#tcp-keep-idle">tcp_keep_idle</a></li>
 <li><a class="reference internal" href="#tcp-keep-intvl">tcp_keep_intvl</a></li>
 <li><a class="reference internal" href="#verify-ssl">verify_ssl</a></li>
 <li><a class="reference internal" href="#worker-container-repository">worker_container_repository</a></li>
 <li><a class="reference internal" href="#worker-container-tag">worker_container_tag</a></li>
 <li><a class="reference internal" href="#worker-pods-creation-batch-size">worker_pods_creation_batch_size</a></li>
 <li><a class="reference internal" href="#worker-pods-pending-timeout">worker_pods_pending_timeout</a></li>
 <li><a class="reference internal" href="#worker-pods-pending-timeout-batch-size">worker_pods_pending_timeout_batch_size</a></li>
 <li><a class="reference internal" href="#worker-pods-pending-timeout-check-interval">worker_pods_pending_timeout_check_interval</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#lineage">[lineage]</a><ul>
 <li><a class="reference internal" href="#backend">backend</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#logging">[logging]</a><ul>
 <li><a class="reference internal" href="#base-log-folder">base_log_folder</a></li>
 <li><a class="reference internal" href="#colored-console-log">colored_console_log</a></li>
 <li><a class="reference internal" href="#colored-formatter-class">colored_formatter_class</a></li>
 <li><a class="reference internal" href="#colored-log-format">colored_log_format</a></li>
 <li><a class="reference internal" href="#dag-processor-manager-log-location">dag_processor_manager_log_location</a></li>
 <li><a class="reference internal" href="#encrypt-s3-logs">encrypt_s3_logs</a></li>
 <li><a class="reference internal" href="#extra-loggers">extra_loggers</a></li>
 <li><a class="reference internal" href="#fab-logging-level">fab_logging_level</a></li>
 <li><a class="reference internal" href="#config-logging-google-key-path">google_key_path</a></li>
 <li><a class="reference internal" href="#log-filename-template">log_filename_template</a></li>
 <li><a class="reference internal" href="#log-format">log_format</a></li>
 <li><a class="reference internal" href="#log-processor-filename-template">log_processor_filename_template</a></li>
 <li><a class="reference internal" href="#logging-config-class">logging_config_class</a></li>
 <li><a class="reference internal" href="#logging-level">logging_level</a></li>
 <li><a class="reference internal" href="#remote-base-log-folder">remote_base_log_folder</a></li>
 <li><a class="reference internal" href="#remote-log-conn-id">remote_log_conn_id</a></li>
 <li><a class="reference internal" href="#remote-logging">remote_logging</a></li>
 <li><a class="reference internal" href="#simple-log-format">simple_log_format</a></li>
 <li><a class="reference internal" href="#task-log-prefix-template">task_log_prefix_template</a></li>
 <li><a class="reference internal" href="#task-log-reader">task_log_reader</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#metrics">[metrics]</a><ul>
 <li><a class="reference internal" href="#stat-name-handler">stat_name_handler</a></li>
 <li><a class="reference internal" href="#statsd-allow-list">statsd_allow_list</a></li>
 <li><a class="reference internal" href="#statsd-custom-client-path">statsd_custom_client_path</a></li>
 <li><a class="reference internal" href="#statsd-datadog-enabled">statsd_datadog_enabled</a></li>
 <li><a class="reference internal" href="#statsd-datadog-tags">statsd_datadog_tags</a></li>
 <li><a class="reference internal" href="#statsd-host">statsd_host</a></li>
 <li><a class="reference internal" href="#statsd-on">statsd_on</a></li>
 <li><a class="reference internal" href="#statsd-port">statsd_port</a></li>
 <li><a class="reference internal" href="#statsd-prefix">statsd_prefix</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#operators">[operators]</a><ul>
 <li><a class="reference internal" href="#allow-illegal-arguments">allow_illegal_arguments</a></li>
 <li><a class="reference internal" href="#default-cpus">default_cpus</a></li>
 <li><a class="reference internal" href="#default-disk">default_disk</a></li>
 <li><a class="reference internal" href="#default-gpus">default_gpus</a></li>
 <li><a class="reference internal" href="#default-owner">default_owner</a></li>
 <li><a class="reference internal" href="#default-queue">default_queue</a></li>
 <li><a class="reference internal" href="#default-ram">default_ram</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#scheduler">[scheduler]</a><ul>
 <li><a class="reference internal" href="#allow-trigger-in-future">allow_trigger_in_future</a></li>
 <li><a class="reference internal" href="#catchup-by-default">catchup_by_default</a></li>
 <li><a class="reference internal" href="#child-process-log-directory">child_process_log_directory</a></li>
 <li><a class="reference internal" href="#clean-tis-without-dagrun-interval">clean_tis_without_dagrun_interval</a></li>
 <li><a class="reference internal" href="#dag-dir-list-interval">dag_dir_list_interval</a></li>
 <li><a class="reference internal" href="#dependency-detector">dependency_detector</a></li>
 <li><a class="reference internal" href="#file-parsing-sort-mode">file_parsing_sort_mode</a></li>
 <li><a class="reference internal" href="#job-heartbeat-sec">job_heartbeat_sec</a></li>
 <li><a class="reference internal" href="#max-dagruns-per-loop-to-schedule">max_dagruns_per_loop_to_schedule</a></li>
 <li><a class="reference internal" href="#max-dagruns-to-create-per-loop">max_dagruns_to_create_per_loop</a></li>
 <li><a class="reference internal" href="#max-tis-per-query">max_tis_per_query</a></li>
 <li><a class="reference internal" href="#min-file-process-interval">min_file_process_interval</a></li>
 <li><a class="reference internal" href="#num-runs">num_runs</a></li>
 <li><a class="reference internal" href="#orphaned-tasks-check-interval">orphaned_tasks_check_interval</a></li>
 <li><a class="reference internal" href="#parsing-processes">parsing_processes</a></li>
 <li><a class="reference internal" href="#pool-metrics-interval">pool_metrics_interval</a></li>
 <li><a class="reference internal" href="#print-stats-interval">print_stats_interval</a></li>
 <li><a class="reference internal" href="#processor-poll-interval">processor_poll_interval</a></li>
 <li><a class="reference internal" href="#schedule-after-task-execution">schedule_after_task_execution</a></li>
 <li><a class="reference internal" href="#scheduler-health-check-threshold">scheduler_health_check_threshold</a></li>
 <li><a class="reference internal" href="#scheduler-heartbeat-sec">scheduler_heartbeat_sec</a></li>
 <li><a class="reference internal" href="#scheduler-zombie-task-threshold">scheduler_zombie_task_threshold</a></li>
 <li><a class="reference internal" href="#use-job-schedule">use_job_schedule</a></li>
 <li><a class="reference internal" href="#use-row-level-locking">use_row_level_locking</a></li>
 <li><a class="reference internal" href="#max-threads-deprecated">max_threads (Deprecated)</a></li>
 <li><a class="reference internal" href="#stat-name-handler-deprecated">stat_name_handler (Deprecated)</a></li>
 <li><a class="reference internal" href="#statsd-allow-list-deprecated">statsd_allow_list (Deprecated)</a></li>
 <li><a class="reference internal" href="#statsd-custom-client-path-deprecated">statsd_custom_client_path (Deprecated)</a></li>
 <li><a class="reference internal" href="#statsd-datadog-enabled-deprecated">statsd_datadog_enabled (Deprecated)</a></li>
 <li><a class="reference internal" href="#statsd-datadog-tags-deprecated">statsd_datadog_tags (Deprecated)</a></li>
 <li><a class="reference internal" href="#statsd-host-deprecated">statsd_host (Deprecated)</a></li>
 <li><a class="reference internal" href="#statsd-on-deprecated">statsd_on (Deprecated)</a></li>
 <li><a class="reference internal" href="#statsd-port-deprecated">statsd_port (Deprecated)</a></li>
 <li><a class="reference internal" href="#statsd-prefix-deprecated">statsd_prefix (Deprecated)</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#secrets">[secrets]</a><ul>
 <li><a class="reference internal" href="#config-secrets-backend">backend</a></li>
 <li><a class="reference internal" href="#backend-kwargs">backend_kwargs</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#sentry">[sentry]</a><ul>
 <li><a class="reference internal" href="#sentry-dsn">sentry_dsn</a></li>
 <li><a class="reference internal" href="#sentry-on">sentry_on</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#smart-sensor">[smart_sensor]</a><ul>
 <li><a class="reference internal" href="#sensors-enabled">sensors_enabled</a></li>
 <li><a class="reference internal" href="#shard-code-upper-limit">shard_code_upper_limit</a></li>
 <li><a class="reference internal" href="#shards">shards</a></li>
 <li><a class="reference internal" href="#use-smart-sensor">use_smart_sensor</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#smtp">[smtp]</a><ul>
 <li><a class="reference internal" href="#smtp-host">smtp_host</a></li>
 <li><a class="reference internal" href="#smtp-mail-from">smtp_mail_from</a></li>
 <li><a class="reference internal" href="#smtp-password">smtp_password</a></li>
 <li><a class="reference internal" href="#smtp-port">smtp_port</a></li>
 <li><a class="reference internal" href="#smtp-retry-limit">smtp_retry_limit</a></li>
 <li><a class="reference internal" href="#smtp-ssl">smtp_ssl</a></li>
 <li><a class="reference internal" href="#smtp-starttls">smtp_starttls</a></li>
 <li><a class="reference internal" href="#smtp-timeout">smtp_timeout</a></li>
 <li><a class="reference internal" href="#smtp-user">smtp_user</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#webserver">[webserver]</a><ul>
 <li><a class="reference internal" href="#access-logfile">access_logfile</a></li>
 <li><a class="reference internal" href="#access-logformat">access_logformat</a></li>
 <li><a class="reference internal" href="#analytics-id">analytics_id</a></li>
 <li><a class="reference internal" href="#analytics-tool">analytics_tool</a></li>
 <li><a class="reference internal" href="#base-url">base_url</a></li>
 <li><a class="reference internal" href="#cookie-samesite">cookie_samesite</a></li>
 <li><a class="reference internal" href="#cookie-secure">cookie_secure</a></li>
 <li><a class="reference internal" href="#dag-default-view">dag_default_view</a></li>
 <li><a class="reference internal" href="#dag-orientation">dag_orientation</a></li>
 <li><a class="reference internal" href="#default-dag-run-display-number">default_dag_run_display_number</a></li>
 <li><a class="reference internal" href="#default-ui-timezone">default_ui_timezone</a></li>
 <li><a class="reference internal" href="#default-wrap">default_wrap</a></li>
 <li><a class="reference internal" href="#enable-proxy-fix">enable_proxy_fix</a></li>
 <li><a class="reference internal" href="#error-logfile">error_logfile</a></li>
 <li><a class="reference internal" href="#expose-config">expose_config</a></li>
 <li><a class="reference internal" href="#expose-hostname">expose_hostname</a></li>
 <li><a class="reference internal" href="#expose-stacktrace">expose_stacktrace</a></li>
 <li><a class="reference internal" href="#hide-paused-dags-by-default">hide_paused_dags_by_default</a></li>
 <li><a class="reference internal" href="#instance-name">instance_name</a></li>
 <li><a class="reference internal" href="#log-animation-speed">log_animation_speed</a></li>
 <li><a class="reference internal" href="#log-auto-tailing-offset">log_auto_tailing_offset</a></li>
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