Configuration Reference ¶

This page contains the list of all the available Airflow configurations that you can set in airflow.cfg file or using environment variables.

Sections:

core
secrets
cli
debug
api
lineage
atlas
operators
hive
webserver
email
smtp
sentry
celery
celery_broker_transport_options
dask
scheduler
ldap
mesos
kerberos
github_enterprise
admin
elasticsearch
elasticsearch_configs
kubernetes
kubernetes_node_selectors
kubernetes_annotations
kubernetes_environment_variables
kubernetes_secrets
kubernetes_labels

core ¶

dags_folder¶

The folder where your airflow pipelines live, most likely a subfolder in a code repository. This path must be absolute.

Type: string
Default: {AIRFLOW_HOME}/dags
Environment Variable: AIRFLOW__CORE__DAGS_FOLDER

base_log_folder¶

The folder where airflow should store its log files This path must be absolute

Type: string
Default: {AIRFLOW_HOME}/logs
Environment Variable: AIRFLOW__CORE__BASE_LOG_FOLDER

remote_logging¶

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.

Type: string
Default: False
Environment Variable: AIRFLOW__CORE__REMOTE_LOGGING

remote_log_conn_id¶

Users must supply an Airflow connection id that provides access to the storage location.

Type: string
Default: ''
Environment Variable: AIRFLOW__CORE__REMOTE_LOG_CONN_ID

remote_base_log_folder¶

Type: string
Default: ''
Environment Variable: AIRFLOW__CORE__REMOTE_BASE_LOG_FOLDER

encrypt_s3_logs¶

Type: string
Default: False
Environment Variable: AIRFLOW__CORE__ENCRYPT_S3_LOGS

logging_level¶

Logging level

Type: string
Default: INFO
Environment Variable: AIRFLOW__CORE__LOGGING_LEVEL

fab_logging_level¶

Logging level for Flask-appbuilder UI

Type: string
Default: WARN
Environment Variable: AIRFLOW__CORE__FAB_LOGGING_LEVEL

logging_config_class¶

Logging class Specify the class that will specify the logging configuration This class has to be on the python classpath

Type: string
Default: ''
Environment Variable: AIRFLOW__CORE__LOGGING_CONFIG_CLASS
Example: my.path.default_local_settings.LOGGING_CONFIG

colored_console_log¶

New in version 1.10.4.

Flag to enable/disable Colored logs in Console Colour the logs when the controlling terminal is a TTY.

Type: string
Default: True
Environment Variable: AIRFLOW__CORE__COLORED_CONSOLE_LOG

colored_log_format¶

New in version 1.10.4.

Log format for when Colored logs is enabled

Type: string
Default: [%%(blue)s%%(asctime)s%%(reset)s] {{%%(blue)s%%(filename)s:%%(reset)s%%(lineno)d}} %%(log_color)s%%(levelname)s%%(reset)s - %%(log_color)s%%(message)s%%(reset)s
Environment Variable: AIRFLOW__CORE__COLORED_LOG_FORMAT

colored_formatter_class¶

New in version 1.10.4.

Type: string
Default: airflow.utils.log.colored_log.CustomTTYColoredFormatter
Environment Variable: AIRFLOW__CORE__COLORED_FORMATTER_CLASS

log_format¶

Format of Log line

Type: string
Default: [%%(asctime)s] {{%%(filename)s:%%(lineno)d}} %%(levelname)s - %%(message)s
Environment Variable: AIRFLOW__CORE__LOG_FORMAT

simple_log_format¶

Type: string
Default: %%(asctime)s %%(levelname)s - %%(message)s
Environment Variable: AIRFLOW__CORE__SIMPLE_LOG_FORMAT

log_filename_template¶

Log filename format

Type: string
Default: {{{{ ti.dag_id }}}}/{{{{ ti.task_id }}}}/{{{{ ts }}}}/{{{{ try_number }}}}.log
Environment Variable: AIRFLOW__CORE__LOG_FILENAME_TEMPLATE

log_processor_filename_template¶

Type: string
Default: {{{{ filename }}}}.log
Environment Variable: AIRFLOW__CORE__LOG_PROCESSOR_FILENAME_TEMPLATE

dag_processor_manager_log_location¶

New in version 1.10.2.

Type: string
Default: {AIRFLOW_HOME}/logs/dag_processor_manager/dag_processor_manager.log
Environment Variable: AIRFLOW__CORE__DAG_PROCESSOR_MANAGER_LOG_LOCATION

task_log_reader¶

Name of handler to read task instance logs. Default to use task handler.

Type: string
Default: task
Environment Variable: AIRFLOW__CORE__TASK_LOG_READER

hostname_callable¶

Hostname by providing a path to a callable, which will resolve the hostname. The format is “package:function”.

For example, default value “socket:getfqdn” means that result from getfqdn() of “socket” package will be used as hostname.

No argument should be required in the function specified. If using IP address as hostname is preferred, use value airflow.utils.net:get_host_ip_address

Type: string
Default: socket:getfqdn
Environment Variable: AIRFLOW__CORE__HOSTNAME_CALLABLE

default_timezone¶

Default timezone in case supplied date times are naive can be utc (default), system, or any IANA timezone string (e.g. Europe/Amsterdam)

Type: string
Default: utc
Environment Variable: AIRFLOW__CORE__DEFAULT_TIMEZONE

executor¶

The executor class that airflow should use. Choices include SequentialExecutor, LocalExecutor, CeleryExecutor, DaskExecutor, KubernetesExecutor

Type: string
Default: SequentialExecutor
Environment Variable: AIRFLOW__CORE__EXECUTOR

sql_alchemy_conn¶

The SqlAlchemy connection string to the metadata database. SqlAlchemy supports many different database engine, more information their website

Type: string
Default: sqlite:///{AIRFLOW_HOME}/airflow.db
Environment Variable: AIRFLOW__CORE__SQL_ALCHEMY_CONN

sql_engine_encoding¶

New in version 1.10.1.

The encoding for the databases

Type: string
Default: utf-8
Environment Variable: AIRFLOW__CORE__SQL_ENGINE_ENCODING

sql_alchemy_pool_enabled¶

If SqlAlchemy should pool database connections.

Type: string
Default: True
Environment Variable: AIRFLOW__CORE__SQL_ALCHEMY_POOL_ENABLED

sql_alchemy_pool_size¶

The SqlAlchemy pool size is the maximum number of database connections in the pool. 0 indicates no limit.

Type: string
Default: 5
Environment Variable: AIRFLOW__CORE__SQL_ALCHEMY_POOL_SIZE

sql_alchemy_max_overflow¶

New in version 1.10.4.

The maximum overflow size of the pool. When the number of checked-out connections reaches the size set in pool_size, additional connections will be returned up to this limit. When those additional connections are returned to the pool, they are disconnected and discarded. It follows then that the total number of simultaneous connections the pool will allow is pool_size + max_overflow, and the total number of “sleeping” connections the pool will allow is pool_size. max_overflow can be set to -1 to indicate no overflow limit; no limit will be placed on the total number of concurrent connections. Defaults to 10.

Type: string
Default: 10
Environment Variable: AIRFLOW__CORE__SQL_ALCHEMY_MAX_OVERFLOW

sql_alchemy_pool_recycle¶

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.

Type: string
Default: 1800
Environment Variable: AIRFLOW__CORE__SQL_ALCHEMY_POOL_RECYCLE

sql_alchemy_pool_pre_ping¶

New in version 1.10.6.

Check connection at the start of each connection pool checkout. Typically, this is a simple statement like “SELECT 1”. More information here: https://docs.sqlalchemy.org/en/13/core/pooling.html#disconnect-handling-pessimistic

Type: string
Default: True
Environment Variable: AIRFLOW__CORE__SQL_ALCHEMY_POOL_PRE_PING

sql_alchemy_schema¶

New in version 1.10.3.

The schema to use for the metadata database. SqlAlchemy supports databases with the concept of multiple schemas.

Type: string
Default: ''
Environment Variable: AIRFLOW__CORE__SQL_ALCHEMY_SCHEMA

sql_alchemy_connect_args¶

New in version 1.10.11.

Import path for connect args in SqlAlchemy. Default to an empty dict. This is useful when you want to configure db engine args that SqlAlchemy won’t parse in connection string. See https://docs.sqlalchemy.org/en/13/core/engines.html#sqlalchemy.create_engine.params.connect_args

Type: string
Default: None
Environment Variable: AIRFLOW__CORE__SQL_ALCHEMY_CONNECT_ARGS

parallelism¶

The amount of parallelism as a setting to the executor. This defines the max number of task instances that should run simultaneously on this airflow installation

Type: string
Default: 32
Environment Variable: AIRFLOW__CORE__PARALLELISM

dag_concurrency¶

The number of task instances allowed to run concurrently by the scheduler

Type: string
Default: 16
Environment Variable: AIRFLOW__CORE__DAG_CONCURRENCY

dags_are_paused_at_creation¶

Are DAGs paused by default at creation

Type: string
Default: True
Environment Variable: AIRFLOW__CORE__DAGS_ARE_PAUSED_AT_CREATION

max_active_runs_per_dag¶

The maximum number of active DAG runs per DAG

Type: string
Default: 16
Environment Variable: AIRFLOW__CORE__MAX_ACTIVE_RUNS_PER_DAG

load_examples¶

Whether to load the DAG examples that ship with Airflow. It’s good to get started, but you probably want to set this to False in a production environment

Type: string
Default: True
Environment Variable: AIRFLOW__CORE__LOAD_EXAMPLES

load_default_connections¶

New in version 1.10.10.

Whether to load the default connections that ship with Airflow. It’s good to get started, but you probably want to set this to False in a production environment

Type: boolean
Default: True
Environment Variable: AIRFLOW__CORE__LOAD_DEFAULT_CONNECTIONS

plugins_folder¶

Where your Airflow plugins are stored

Type: string
Default: {AIRFLOW_HOME}/plugins
Environment Variable: AIRFLOW__CORE__PLUGINS_FOLDER

fernet_key¶

Secret key to save connection passwords in the db

Type: string
Default: {FERNET_KEY}
Environment Variable: AIRFLOW__CORE__FERNET_KEY

donot_pickle¶

Whether to disable pickling dags

Type: string
Default: False
Environment Variable: AIRFLOW__CORE__DONOT_PICKLE

dagbag_import_timeout¶

How long before timing out a python file import

Type: string
Default: 30
Environment Variable: AIRFLOW__CORE__DAGBAG_IMPORT_TIMEOUT

dag_file_processor_timeout¶

New in version 1.10.6.

How long before timing out a DagFileProcessor, which processes a dag file

Type: string
Default: 50
Environment Variable: AIRFLOW__CORE__DAG_FILE_PROCESSOR_TIMEOUT

task_runner¶

The class to use for running task instances in a subprocess

Type: string
Default: StandardTaskRunner
Environment Variable: AIRFLOW__CORE__TASK_RUNNER

default_impersonation¶

If set, tasks without a run_as_user argument will be run with this user Can be used to de-elevate a sudo user running Airflow when executing tasks

Type: string
Default: ''
Environment Variable: AIRFLOW__CORE__DEFAULT_IMPERSONATION

security¶

What security module to use (for example kerberos)

Type: string
Default: ''
Environment Variable: AIRFLOW__CORE__SECURITY

secure_mode¶

If set to False enables some unsecure features like Charts and Ad Hoc Queries. In 2.0 will default to True.

Type: string
Default: False
Environment Variable: AIRFLOW__CORE__SECURE_MODE

unit_test_mode¶

Turn unit test mode on (overwrites many configuration options with test values at runtime)

Type: string
Default: False
Environment Variable: AIRFLOW__CORE__UNIT_TEST_MODE

enable_xcom_pickling¶

Whether to enable pickling for xcom (note that this is insecure and allows for RCE exploits). This will be deprecated in Airflow 2.0 (be forced to False).

Type: string
Default: True
Environment Variable: AIRFLOW__CORE__ENABLE_XCOM_PICKLING

killed_task_cleanup_time¶

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

Type: string
Default: 60
Environment Variable: AIRFLOW__CORE__KILLED_TASK_CLEANUP_TIME

dag_run_conf_overrides_params¶

Whether to override params with dag_run.conf. If you pass some key-value pairs through airflow dags backfill -c or airflow dags trigger -c, the key-value pairs will override the existing ones in params.

Type: string
Default: False
Environment Variable: AIRFLOW__CORE__DAG_RUN_CONF_OVERRIDES_PARAMS

worker_precheck¶

New in version 1.10.1.

Worker initialisation check to validate Metadata Database connection

Type: string
Default: False
Environment Variable: AIRFLOW__CORE__WORKER_PRECHECK

dag_discovery_safe_mode¶

New in version 1.10.3.

When discovering DAGs, ignore any files that don’t contain the strings DAG and airflow.

Type: string
Default: True
Environment Variable: AIRFLOW__CORE__DAG_DISCOVERY_SAFE_MODE

default_task_retries¶

New in version 1.10.6.

The number of retries each task is going to have by default. Can be overridden at dag or task level.

Type: string
Default: 0
Environment Variable: AIRFLOW__CORE__DEFAULT_TASK_RETRIES

store_serialized_dags¶

New in version 1.10.7.

Whether to serialise DAGs and persist them in DB. If set to True, Webserver reads from DB instead of parsing DAG files More details: https://airflow.apache.org/docs/stable/dag-serialization.html

Type: string
Default: False
Environment Variable: AIRFLOW__CORE__STORE_SERIALIZED_DAGS

min_serialized_dag_update_interval¶

New in version 1.10.7.

Updating serialized DAG can not be faster than a minimum interval to reduce database write rate.

Type: string
Default: 30
Environment Variable: AIRFLOW__CORE__MIN_SERIALIZED_DAG_UPDATE_INTERVAL

min_serialized_dag_fetch_interval¶

New in version 1.10.12.

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

Type: string
Default: 10
Environment Variable: AIRFLOW__CORE__MIN_SERIALIZED_DAG_FETCH_INTERVAL

store_dag_code¶

New in version 1.10.10.

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. Defaults to same as the store_serialized_dags setting.

Type: string
Default: None
Environment Variable: AIRFLOW__CORE__STORE_DAG_CODE
Example: False

max_num_rendered_ti_fields_per_task¶

New in version 1.10.10.

Maximum number of Rendered Task Instance Fields (Template Fields) per task to store in the Database. When Dag Serialization is enabled (store_serialized_dags=True), all the template_fields for each of Task Instance are stored in the Database. Keeping this number small may cause an error when you try to view Rendered tab in TaskInstance view for older tasks.

Type: integer
Default: 30
Environment Variable: AIRFLOW__CORE__MAX_NUM_RENDERED_TI_FIELDS_PER_TASK

check_slas¶

New in version 1.10.8.

On each dagrun check against defined SLAs

Type: string
Default: True
Environment Variable: AIRFLOW__CORE__CHECK_SLAS

xcom_backend¶

New in version 1.10.12.

Path to custom XCom class that will be used to store and resolve operators results

Type: string
Default: airflow.models.xcom.BaseXCom
Environment Variable: AIRFLOW__CORE__XCOM_BACKEND
Example: path.to.CustomXCom

secrets ¶

backend¶

New in version 1.10.10.

Full class name of secrets backend to enable (will precede env vars and metastore in search path)

Type: string
Default: ''
Environment Variable: AIRFLOW__SECRETS__BACKEND
Example: airflow.contrib.secrets.aws_systems_manager.SystemsManagerParameterStoreBackend

backend_kwargs¶

New in version 1.10.10.

The backend_kwargs param is loaded into a dictionary and passed to __init__ of secrets backend class. See documentation for the secrets backend you are using. JSON is expected. Example for AWS Systems Manager ParameterStore: {{"connections_prefix": "/airflow/connections", "profile_name": "default"}}

Type: string
Default: ''
Environment Variable: AIRFLOW__SECRETS__BACKEND_KWARGS

cli ¶

api_client¶

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

Type: string
Default: airflow.api.client.local_client
Environment Variable: AIRFLOW__CLI__API_CLIENT

endpoint_url¶

If you set web_server_url_prefix, do NOT forget to append it here, ex: endpoint_url = http://localhost:8080/myroot So api will look like: http://localhost:8080/myroot/api/experimental/...

Type: string
Default: http://localhost:8080
Environment Variable: AIRFLOW__CLI__ENDPOINT_URL

debug ¶

fail_fast¶

New in version 1.10.8.

Used only with DebugExecutor. If set to True DAG will fail with first failed task. Helpful for debugging purposes.

Type: string
Default: False
Environment Variable: AIRFLOW__DEBUG__FAIL_FAST

api ¶

auth_backend¶

How to authenticate users of the API. See https://airflow.apache.org/docs/stable/security.html for possible values. (“airflow.api.auth.backend.default” allows all requests for historic reasons)

Type: string
Default: airflow.api.auth.backend.deny_all
Environment Variable: AIRFLOW__API__AUTH_BACKEND

lineage ¶

backend¶

what lineage backend to use

Type: string
Default: ''
Environment Variable: AIRFLOW__LINEAGE__BACKEND

atlas ¶

sasl_enabled¶

Type: string
Default: False
Environment Variable: AIRFLOW__ATLAS__SASL_ENABLED

host¶

Type: string
Default: ''
Environment Variable: AIRFLOW__ATLAS__HOST

port¶

Type: string
Default: 21000
Environment Variable: AIRFLOW__ATLAS__PORT

username¶

Type: string
Default: ''
Environment Variable: AIRFLOW__ATLAS__USERNAME

password¶

Type: string
Default: ''
Environment Variable: AIRFLOW__ATLAS__PASSWORD

operators ¶

default_owner¶

The default owner assigned to each new operator, unless provided explicitly or passed via default_args

Type: string
Default: airflow
Environment Variable: AIRFLOW__OPERATORS__DEFAULT_OWNER

default_cpus¶

Type: string
Default: 1
Environment Variable: AIRFLOW__OPERATORS__DEFAULT_CPUS

default_ram¶

Type: string
Default: 512
Environment Variable: AIRFLOW__OPERATORS__DEFAULT_RAM

default_disk¶

Type: string
Default: 512
Environment Variable: AIRFLOW__OPERATORS__DEFAULT_DISK

default_gpus¶

Type: string
Default: 0
Environment Variable: AIRFLOW__OPERATORS__DEFAULT_GPUS

hive ¶

default_hive_mapred_queue¶

Default mapreduce queue for HiveOperator tasks

Type: string
Default: ''
Environment Variable: AIRFLOW__HIVE__DEFAULT_HIVE_MAPRED_QUEUE

webserver ¶

base_url¶

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

Type: string
Default: http://localhost:8080
Environment Variable: AIRFLOW__WEBSERVER__BASE_URL

default_ui_timezone¶

New in version 1.10.10.

Default timezone to display all dates in the RBAC 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

Type: string
Default: UTC
Environment Variable: AIRFLOW__WEBSERVER__DEFAULT_UI_TIMEZONE
Example: America/New_York

web_server_host¶

The ip specified when starting the web server

Type: string
Default: 0.0.0.0
Environment Variable: AIRFLOW__WEBSERVER__WEB_SERVER_HOST

web_server_port¶

The port on which to run the web server

Type: string
Default: 8080
Environment Variable: AIRFLOW__WEBSERVER__WEB_SERVER_PORT

web_server_ssl_cert¶

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.

Type: string
Default: ''
Environment Variable: AIRFLOW__WEBSERVER__WEB_SERVER_SSL_CERT

web_server_ssl_key¶

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.

Type: string
Default: ''
Environment Variable: AIRFLOW__WEBSERVER__WEB_SERVER_SSL_KEY

web_server_master_timeout¶

Number of seconds the webserver waits before killing gunicorn master that doesn’t respond

Type: string
Default: 120
Environment Variable: AIRFLOW__WEBSERVER__WEB_SERVER_MASTER_TIMEOUT

web_server_worker_timeout¶

Number of seconds the gunicorn webserver waits before timing out on a worker

Type: string
Default: 120
Environment Variable: AIRFLOW__WEBSERVER__WEB_SERVER_WORKER_TIMEOUT

worker_refresh_batch_size¶

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.

Type: string
Default: 1
Environment Variable: AIRFLOW__WEBSERVER__WORKER_REFRESH_BATCH_SIZE

worker_refresh_interval¶

Number of seconds to wait before refreshing a batch of workers.

Type: string
Default: 30
Environment Variable: AIRFLOW__WEBSERVER__WORKER_REFRESH_INTERVAL

reload_on_plugin_change¶

New in version 1.10.11.

If set to True, Airflow will track files in plugins_folder directory. When it detects changes, then reload the gunicorn.

Type: boolean
Default: False
Environment Variable: AIRFLOW__WEBSERVER__RELOAD_ON_PLUGIN_CHANGE

secret_key¶

Secret key used to run your flask app It should be as random as possible

Type: string
Default: temporary_key
Environment Variable: AIRFLOW__WEBSERVER__SECRET_KEY

workers¶

Number of workers to run the Gunicorn web server

Type: string
Default: 4
Environment Variable: AIRFLOW__WEBSERVER__WORKERS

worker_class¶

The worker class gunicorn should use. Choices include sync (default), eventlet, gevent

Type: string
Default: sync
Environment Variable: AIRFLOW__WEBSERVER__WORKER_CLASS

access_logfile¶

Log files for the gunicorn webserver. ‘-‘ means log to stderr.

Type: string
Default: -
Environment Variable: AIRFLOW__WEBSERVER__ACCESS_LOGFILE

error_logfile¶

Log files for the gunicorn webserver. ‘-‘ means log to stderr.

Type: string
Default: -
Environment Variable: AIRFLOW__WEBSERVER__ERROR_LOGFILE

expose_config¶

Expose the configuration file in the web server

Type: string
Default: False
Environment Variable: AIRFLOW__WEBSERVER__EXPOSE_CONFIG

expose_hostname¶

New in version 1.10.8.

Expose hostname in the web server

Type: string
Default: True
Environment Variable: AIRFLOW__WEBSERVER__EXPOSE_HOSTNAME

expose_stacktrace¶

New in version 1.10.8.

Expose stacktrace in the web server

Type: string
Default: True
Environment Variable: AIRFLOW__WEBSERVER__EXPOSE_STACKTRACE

authenticate¶

Set to true to turn on authentication: https://airflow.apache.org/security.html#web-authentication

Type: boolean
Default: False
Environment Variable: AIRFLOW__WEBSERVER__AUTHENTICATE

filter_by_owner¶

Filter the list of dags by owner name (requires authentication to be enabled)

Type: boolean
Default: False
Environment Variable: AIRFLOW__WEBSERVER__FILTER_BY_OWNER

owner_mode¶

Filtering mode. Choices include user (default) and ldapgroup. Ldap group filtering requires using the ldap backend

Note that the ldap server needs the “memberOf” overlay to be set up in order to user the ldapgroup mode.

Type: string
Default: user
Environment Variable: AIRFLOW__WEBSERVER__OWNER_MODE

dag_default_view¶

Default DAG view. Valid values are: tree, graph, duration, gantt, landing_times

Type: string
Default: tree
Environment Variable: AIRFLOW__WEBSERVER__DAG_DEFAULT_VIEW

dag_orientation¶

“Default DAG orientation. Valid values are:” LR (Left->Right), TB (Top->Bottom), RL (Right->Left), BT (Bottom->Top)

Type: string
Default: LR
Environment Variable: AIRFLOW__WEBSERVER__DAG_ORIENTATION

demo_mode¶

Puts the webserver in demonstration mode; blurs the names of Operators for privacy.

Type: string
Default: False
Environment Variable: AIRFLOW__WEBSERVER__DEMO_MODE

log_fetch_timeout_sec¶

The amount of time (in secs) webserver will wait for initial handshake while fetching logs from other worker machine

Type: string
Default: 5
Environment Variable: AIRFLOW__WEBSERVER__LOG_FETCH_TIMEOUT_SEC

log_fetch_delay_sec¶

New in version 1.10.8.

Time interval (in secs) to wait before next log fetching.

Type: int
Default: 2
Environment Variable: AIRFLOW__WEBSERVER__LOG_FETCH_DELAY_SEC

log_auto_tailing_offset¶

New in version 1.10.8.

Distance away from page bottom to enable auto tailing.

Type: int
Default: 30
Environment Variable: AIRFLOW__WEBSERVER__LOG_AUTO_TAILING_OFFSET

log_animation_speed¶

New in version 1.10.8.

Animation speed for auto tailing log display.

Type: int
Default: 1000
Environment Variable: AIRFLOW__WEBSERVER__LOG_ANIMATION_SPEED

hide_paused_dags_by_default¶

By default, the webserver shows paused DAGs. Flip this to hide paused DAGs by default

Type: string
Default: False
Environment Variable: AIRFLOW__WEBSERVER__HIDE_PAUSED_DAGS_BY_DEFAULT

page_size¶

Consistent page size across all listing views in the UI

Type: string
Default: 100
Environment Variable: AIRFLOW__WEBSERVER__PAGE_SIZE

rbac¶

Use FAB-based webserver with RBAC feature

Type: string
Default: False
Environment Variable: AIRFLOW__WEBSERVER__RBAC

navbar_color¶

Define the color of navigation bar

Type: string
Default: #007A87
Environment Variable: AIRFLOW__WEBSERVER__NAVBAR_COLOR

default_dag_run_display_number¶

Default dagrun to show in UI

Type: string
Default: 25
Environment Variable: AIRFLOW__WEBSERVER__DEFAULT_DAG_RUN_DISPLAY_NUMBER

enable_proxy_fix¶

New in version 1.10.1.

Enable werkzeug ProxyFix middleware for reverse proxy

Type: boolean
Default: False
Environment Variable: AIRFLOW__WEBSERVER__ENABLE_PROXY_FIX

proxy_fix_x_for¶

New in version 1.10.7.

Number of values to trust for X-Forwarded-For. More info: https://werkzeug.palletsprojects.com/en/0.16.x/middleware/proxy_fix/

Type: integer
Default: 1
Environment Variable: AIRFLOW__WEBSERVER__PROXY_FIX_X_FOR

proxy_fix_x_proto¶

New in version 1.10.7.

Number of values to trust for X-Forwarded-Proto

Type: integer
Default: 1
Environment Variable: AIRFLOW__WEBSERVER__PROXY_FIX_X_PROTO

proxy_fix_x_host¶

New in version 1.10.7.

Number of values to trust for X-Forwarded-Host

Type: integer
Default: 1
Environment Variable: AIRFLOW__WEBSERVER__PROXY_FIX_X_HOST

proxy_fix_x_port¶

New in version 1.10.7.

Number of values to trust for X-Forwarded-Port

Type: integer
Default: 1
Environment Variable: AIRFLOW__WEBSERVER__PROXY_FIX_X_PORT

proxy_fix_x_prefix¶

New in version 1.10.7.

Number of values to trust for X-Forwarded-Prefix

Type: integer
Default: 1
Environment Variable: AIRFLOW__WEBSERVER__PROXY_FIX_X_PREFIX

cookie_secure¶

New in version 1.10.3.

Set secure flag on session cookie

Type: string
Default: False
Environment Variable: AIRFLOW__WEBSERVER__COOKIE_SECURE

cookie_samesite¶

New in version 1.10.3.

Set samesite policy on session cookie

Type: string
Default: ''
Environment Variable: AIRFLOW__WEBSERVER__COOKIE_SAMESITE

default_wrap¶

New in version 1.10.4.

Default setting for wrap toggle on DAG code and TI log views.

Type: boolean
Default: False
Environment Variable: AIRFLOW__WEBSERVER__DEFAULT_WRAP

x_frame_enabled¶

New in version 1.10.8.

Allow the UI to be rendered in a frame

Type: boolean
Default: True
Environment Variable: AIRFLOW__WEBSERVER__X_FRAME_ENABLED

analytics_tool¶

Send anonymous user activity to your analytics tool choose from google_analytics, segment, or metarouter

Type: string
Default: None
Environment Variable: AIRFLOW__WEBSERVER__ANALYTICS_TOOL

analytics_id¶

New in version 1.10.5.

Unique ID of your account in the analytics tool

Type: string
Default: None
Environment Variable: AIRFLOW__WEBSERVER__ANALYTICS_ID

update_fab_perms¶

New in version 1.10.10.

Update FAB permissions and sync security manager roles on webserver startup

Type: string
Default: True
Environment Variable: AIRFLOW__WEBSERVER__UPDATE_FAB_PERMS

session_lifetime_minutes¶

New in version 1.10.13.

The UI cookie lifetime in minutes. User will be logged out from UI after session_lifetime_minutes of non-activity

Type: int
Default: 43200
Environment Variable: AIRFLOW__WEBSERVER__SESSION_LIFETIME_MINUTES

email ¶

email_backend¶

Type: string
Default: airflow.utils.email.send_email_smtp
Environment Variable: AIRFLOW__EMAIL__EMAIL_BACKEND

smtp ¶

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

smtp_host¶

Type: string
Default: localhost
Environment Variable: AIRFLOW__SMTP__SMTP_HOST

smtp_starttls¶

Type: string
Default: True
Environment Variable: AIRFLOW__SMTP__SMTP_STARTTLS

smtp_ssl¶

Type: string
Default: False
Environment Variable: AIRFLOW__SMTP__SMTP_SSL

smtp_user¶

Type: string
Default: None
Environment Variable: AIRFLOW__SMTP__SMTP_USER
Example: airflow

smtp_password¶

Type: string
Default: None
Environment Variable: AIRFLOW__SMTP__SMTP_PASSWORD
Example: airflow

smtp_port¶

Type: string
Default: 25
Environment Variable: AIRFLOW__SMTP__SMTP_PORT

smtp_mail_from¶

Type: string
Default: airflow@example.com
Environment Variable: AIRFLOW__SMTP__SMTP_MAIL_FROM

sentry ¶

Sentry (https://docs.sentry.io) integration

sentry_dsn¶

New in version 1.10.6.

Type: string
Default: ''
Environment Variable: AIRFLOW__SENTRY__SENTRY_DSN

celery ¶

This section only applies if you are using the CeleryExecutor in [core] section above

celery_app_name¶

The app name that will be used by celery

Type: string
Default: airflow.executors.celery_executor
Environment Variable: AIRFLOW__CELERY__CELERY_APP_NAME

worker_concurrency¶

The concurrency that will be used when starting workers with the airflow celery worker command. This defines the number of task instances that a worker will take, so size up your workers based on the resources on your worker box and the nature of your tasks

Type: string
Default: 16
Environment Variable: AIRFLOW__CELERY__WORKER_CONCURRENCY

worker_autoscale¶

The maximum and minimum concurrency that will be used when starting workers with the airflow celery worker command (always keep minimum processes, but grow to maximum if necessary). Note the value should be max_concurrency,min_concurrency Pick these numbers based on resources on worker box and the nature of the task. If autoscale option is available, worker_concurrency will be ignored. http://docs.celeryproject.org/en/latest/reference/celery.bin.worker.html#cmdoption-celery-worker-autoscale

Type: string
Default: None
Environment Variable: AIRFLOW__CELERY__WORKER_AUTOSCALE
Example: 16,12

worker_log_server_port¶

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.

Type: string
Default: 8793
Environment Variable: AIRFLOW__CELERY__WORKER_LOG_SERVER_PORT

broker_url¶

The Celery broker URL. Celery supports RabbitMQ, Redis and experimentally a sqlalchemy database. Refer to the Celery documentation for more information. http://docs.celeryproject.org/en/latest/userguide/configuration.html#broker-settings

Type: string
Default: sqla+mysql://airflow:airflow@localhost:3306/airflow
Environment Variable: AIRFLOW__CELERY__BROKER_URL

result_backend¶

The Celery result_backend. When a job finishes, it needs to update the metadata of the job. Therefore it will post a message on a message bus, or insert it into a database (depending of the backend) This status is used by the scheduler to update the state of the task The use of a database is highly recommended http://docs.celeryproject.org/en/latest/userguide/configuration.html#task-result-backend-settings

Type: string
Default: db+mysql://airflow:airflow@localhost:3306/airflow
Environment Variable: AIRFLOW__CELERY__RESULT_BACKEND

flower_host¶

Celery Flower is a sweet UI for Celery. Airflow has a shortcut to start it airflow flower. This defines the IP that Celery Flower runs on

Type: string
Default: 0.0.0.0
Environment Variable: AIRFLOW__CELERY__FLOWER_HOST

flower_url_prefix¶

The root URL for Flower

Type: string
Default: ''
Environment Variable: AIRFLOW__CELERY__FLOWER_URL_PREFIX
Example: /flower

flower_port¶

This defines the port that Celery Flower runs on

Type: string
Default: 5555
Environment Variable: AIRFLOW__CELERY__FLOWER_PORT

flower_basic_auth¶

New in version 1.10.2.

Securing Flower with Basic Authentication Accepts user:password pairs separated by a comma

Type: string
Default: ''
Environment Variable: AIRFLOW__CELERY__FLOWER_BASIC_AUTH
Example: user1:password1,user2:password2

default_queue¶

Default queue that tasks get assigned to and that worker listen on.

Type: string
Default: default
Environment Variable: AIRFLOW__CELERY__DEFAULT_QUEUE

sync_parallelism¶

New in version 1.10.3.

How many processes CeleryExecutor uses to sync task state. 0 means to use max(1, number of cores - 1) processes.

Type: string
Default: 0
Environment Variable: AIRFLOW__CELERY__SYNC_PARALLELISM

celery_config_options¶

Import path for celery configuration options

Type: string
Default: airflow.config_templates.default_celery.DEFAULT_CELERY_CONFIG
Environment Variable: AIRFLOW__CELERY__CELERY_CONFIG_OPTIONS

ssl_active¶

In case of using SSL

Type: string
Default: False
Environment Variable: AIRFLOW__CELERY__SSL_ACTIVE

ssl_key¶

Type: string
Default: ''
Environment Variable: AIRFLOW__CELERY__SSL_KEY

ssl_cert¶

Type: string
Default: ''
Environment Variable: AIRFLOW__CELERY__SSL_CERT

ssl_cacert¶

Type: string
Default: ''
Environment Variable: AIRFLOW__CELERY__SSL_CACERT

pool¶

New in version 1.10.4.

Celery Pool implementation. Choices include: prefork (default), eventlet, gevent or solo. See: https://docs.celeryproject.org/en/latest/userguide/workers.html#concurrency https://docs.celeryproject.org/en/latest/userguide/concurrency/eventlet.html

Type: string
Default: prefork
Environment Variable: AIRFLOW__CELERY__POOL

operation_timeout¶

New in version 1.10.8.

The number of seconds to wait before timing out send_task_to_executor or fetch_celery_task_state operations.

Type: int
Default: 2
Environment Variable: AIRFLOW__CELERY__OPERATION_TIMEOUT

celery_broker_transport_options ¶

This section is for specifying options which can be passed to the underlying celery broker transport. See: http://docs.celeryproject.org/en/latest/userguide/configuration.html#std:setting-broker_transport_options

visibility_timeout¶

The visibility timeout defines the number of seconds to wait for the worker to acknowledge the task before the message is redelivered to another worker. Make sure to increase the visibility timeout to match the time of the longest ETA you’re planning to use. visibility_timeout is only supported for Redis and SQS celery brokers. See: http://docs.celeryproject.org/en/master/userguide/configuration.html#std:setting-broker_transport_options

Type: string
Default: None
Environment Variable: AIRFLOW__CELERY_BROKER_TRANSPORT_OPTIONS__VISIBILITY_TIMEOUT
Example: 21600

dask ¶

This section only applies if you are using the DaskExecutor in [core] section above

cluster_address¶

The IP address and port of the Dask cluster’s scheduler.

Type: string
Default: 127.0.0.1:8786
Environment Variable: AIRFLOW__DASK__CLUSTER_ADDRESS

tls_ca¶

TLS/ SSL settings to access a secured Dask scheduler.

Type: string
Default: ''
Environment Variable: AIRFLOW__DASK__TLS_CA

tls_cert¶

Type: string
Default: ''
Environment Variable: AIRFLOW__DASK__TLS_CERT

tls_key¶

Type: string
Default: ''
Environment Variable: AIRFLOW__DASK__TLS_KEY

scheduler ¶

job_heartbeat_sec¶

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).

Type: string
Default: 5
Environment Variable: AIRFLOW__SCHEDULER__JOB_HEARTBEAT_SEC

scheduler_heartbeat_sec¶

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).

Type: string
Default: 5
Environment Variable: AIRFLOW__SCHEDULER__SCHEDULER_HEARTBEAT_SEC

run_duration¶

After how much time should the scheduler terminate in seconds -1 indicates to run continuously (see also num_runs)

Type: string
Default: -1
Environment Variable: AIRFLOW__SCHEDULER__RUN_DURATION

num_runs¶

New in version 1.10.6.

The number of times to try to schedule each DAG file -1 indicates unlimited number

Type: string
Default: -1
Environment Variable: AIRFLOW__SCHEDULER__NUM_RUNS

processor_poll_interval¶

New in version 1.10.6.

The number of seconds to wait between consecutive DAG file processing

Type: string
Default: 1
Environment Variable: AIRFLOW__SCHEDULER__PROCESSOR_POLL_INTERVAL

min_file_process_interval¶

after how much time (seconds) a new DAGs should be picked up from the filesystem

Type: string
Default: 0
Environment Variable: AIRFLOW__SCHEDULER__MIN_FILE_PROCESS_INTERVAL

dag_dir_list_interval¶

How often (in seconds) to scan the DAGs directory for new files. Default to 5 minutes.

Type: string
Default: 300
Environment Variable: AIRFLOW__SCHEDULER__DAG_DIR_LIST_INTERVAL

print_stats_interval¶

How often should stats be printed to the logs. Setting to 0 will disable printing stats

Type: string
Default: 30
Environment Variable: AIRFLOW__SCHEDULER__PRINT_STATS_INTERVAL

scheduler_health_check_threshold¶

New in version 1.10.2.

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

Type: string
Default: 30
Environment Variable: AIRFLOW__SCHEDULER__SCHEDULER_HEALTH_CHECK_THRESHOLD

child_process_log_directory¶

Type: string
Default: {AIRFLOW_HOME}/logs/scheduler
Environment Variable: AIRFLOW__SCHEDULER__CHILD_PROCESS_LOG_DIRECTORY

scheduler_zombie_task_threshold¶

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.

Type: string
Default: 300
Environment Variable: AIRFLOW__SCHEDULER__SCHEDULER_ZOMBIE_TASK_THRESHOLD

catchup_by_default¶

Turn off scheduler catchup by setting this to False. Default behavior is unchanged and Command Line Backfills still work, but the scheduler will not do scheduler catchup if this is False, however it can be set on a per DAG basis in the DAG definition (catchup)

Type: string
Default: True
Environment Variable: AIRFLOW__SCHEDULER__CATCHUP_BY_DEFAULT

max_tis_per_query¶

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)

Type: string
Default: 512
Environment Variable: AIRFLOW__SCHEDULER__MAX_TIS_PER_QUERY

statsd_on¶

Statsd (https://github.com/etsy/statsd) integration settings

Type: string
Default: False
Environment Variable: AIRFLOW__SCHEDULER__STATSD_ON

statsd_host¶

Type: string
Default: localhost
Environment Variable: AIRFLOW__SCHEDULER__STATSD_HOST

statsd_port¶

Type: string
Default: 8125
Environment Variable: AIRFLOW__SCHEDULER__STATSD_PORT

statsd_prefix¶

Type: string
Default: airflow
Environment Variable: AIRFLOW__SCHEDULER__STATSD_PREFIX

statsd_allow_list¶

New in version 1.10.6.

If you want to avoid send all the available metrics to StatsD, you can configure an allow list of prefixes to send only the metrics that start with the elements of the list (e.g: scheduler,executor,dagrun)

Type: string
Default: ''
Environment Variable: AIRFLOW__SCHEDULER__STATSD_ALLOW_LIST

max_threads¶

The scheduler can run multiple threads in parallel to schedule dags. This defines how many threads will run.

Type: string
Default: 2
Environment Variable: AIRFLOW__SCHEDULER__MAX_THREADS

authenticate¶

Type: string
Default: False
Environment Variable: AIRFLOW__SCHEDULER__AUTHENTICATE

use_job_schedule¶

New in version 1.10.2.

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.

Type: string
Default: True
Environment Variable: AIRFLOW__SCHEDULER__USE_JOB_SCHEDULE

allow_trigger_in_future¶

New in version 1.10.8.

Allow externally triggered DagRuns for Execution Dates in the future Only has effect if schedule_interval is set to None in DAG

Type: string
Default: False
Environment Variable: AIRFLOW__SCHEDULER__ALLOW_TRIGGER_IN_FUTURE

ldap ¶

uri¶

set this to ldaps://<your.ldap.server>:<port>

Type: string
Default: ''
Environment Variable: AIRFLOW__LDAP__URI

user_filter¶

Type: string
Default: objectClass=*
Environment Variable: AIRFLOW__LDAP__USER_FILTER

user_name_attr¶

Type: string
Default: uid
Environment Variable: AIRFLOW__LDAP__USER_NAME_ATTR

group_member_attr¶

Type: string
Default: memberOf
Environment Variable: AIRFLOW__LDAP__GROUP_MEMBER_ATTR

superuser_filter¶

Type: string
Default: ''
Environment Variable: AIRFLOW__LDAP__SUPERUSER_FILTER

data_profiler_filter¶

Type: string
Default: ''
Environment Variable: AIRFLOW__LDAP__DATA_PROFILER_FILTER

bind_user¶

Type: string
Default: cn=Manager,dc=example,dc=com
Environment Variable: AIRFLOW__LDAP__BIND_USER

bind_password¶

Type: string
Default: insecure
Environment Variable: AIRFLOW__LDAP__BIND_PASSWORD

basedn¶

Type: string
Default: dc=example,dc=com
Environment Variable: AIRFLOW__LDAP__BASEDN

cacert¶

Type: string
Default: /etc/ca/ldap_ca.crt
Environment Variable: AIRFLOW__LDAP__CACERT

search_scope¶

Type: string
Default: LEVEL
Environment Variable: AIRFLOW__LDAP__SEARCH_SCOPE

ignore_malformed_schema¶

New in version 1.10.3.

This setting allows the use of LDAP servers that either return a broken schema, or do not return a schema.

Type: string
Default: False
Environment Variable: AIRFLOW__LDAP__IGNORE_MALFORMED_SCHEMA

mesos ¶

master¶

Mesos master address which MesosExecutor will connect to.

Type: string
Default: localhost:5050
Environment Variable: AIRFLOW__MESOS__MASTER

framework_name¶

The framework name which Airflow scheduler will register itself as on mesos

Type: string
Default: Airflow
Environment Variable: AIRFLOW__MESOS__FRAMEWORK_NAME

task_cpu¶

Number of cpu cores required for running one task instance using ‘airflow run <dag_id> <task_id> <execution_date> –local -p <pickle_id>’ command on a mesos slave

Type: int
Default: 1
Environment Variable: AIRFLOW__MESOS__TASK_CPU

task_memory¶

Memory in MB required for running one task instance using ‘airflow run <dag_id> <task_id> <execution_date> –local -p <pickle_id>’ command on a mesos slave

Type: string
Default: 256
Environment Variable: AIRFLOW__MESOS__TASK_MEMORY

checkpoint¶

Enable framework checkpointing for mesos See http://mesos.apache.org/documentation/latest/slave-recovery/

Type: boolean
Default: False
Environment Variable: AIRFLOW__MESOS__CHECKPOINT

failover_timeout¶

Failover timeout in milliseconds. When checkpointing is enabled and this option is set, Mesos waits until the configured timeout for the MesosExecutor framework to re-register after a failover. Mesos shuts down running tasks if the MesosExecutor framework fails to re-register within this timeframe.

Type: int
Default: None
Environment Variable: AIRFLOW__MESOS__FAILOVER_TIMEOUT
Example: 604800

authenticate¶

Enable framework authentication for mesos See http://mesos.apache.org/documentation/latest/configuration/

Type: boolean
Default: False
Environment Variable: AIRFLOW__MESOS__AUTHENTICATE

default_principal¶

Mesos credentials, if authentication is enabled

Type: boolean
Default: None
Environment Variable: AIRFLOW__MESOS__DEFAULT_PRINCIPAL
Example: admin

default_secret¶

Type: boolean
Default: None
Environment Variable: AIRFLOW__MESOS__DEFAULT_SECRET
Example: admin

docker_image_slave¶

Optional Docker Image to run on slave before running the command This image should be accessible from mesos slave i.e mesos slave should be able to pull this docker image before executing the command.

Type: boolean
Default: None
Environment Variable: AIRFLOW__MESOS__DOCKER_IMAGE_SLAVE
Example: puckel/docker-airflow

kerberos ¶

ccache¶

Type: string
Default: /tmp/airflow_krb5_ccache
Environment Variable: AIRFLOW__KERBEROS__CCACHE

principal¶

gets augmented with fqdn

Type: string
Default: airflow
Environment Variable: AIRFLOW__KERBEROS__PRINCIPAL

reinit_frequency¶

Type: string
Default: 3600
Environment Variable: AIRFLOW__KERBEROS__REINIT_FREQUENCY

kinit_path¶

Type: string
Default: kinit
Environment Variable: AIRFLOW__KERBEROS__KINIT_PATH

keytab¶

Type: string
Default: airflow.keytab
Environment Variable: AIRFLOW__KERBEROS__KEYTAB

github_enterprise ¶

api_rev¶

Type: string
Default: v3
Environment Variable: AIRFLOW__GITHUB_ENTERPRISE__API_REV

admin ¶

hide_sensitive_variable_fields¶

UI to hide sensitive variable fields when set to True

Type: string
Default: True
Environment Variable: AIRFLOW__ADMIN__HIDE_SENSITIVE_VARIABLE_FIELDS

elasticsearch ¶

host¶

New in version 1.10.4.

Elasticsearch host

Type: string
Default: ''
Environment Variable: AIRFLOW__ELASTICSEARCH__HOST

log_id_template¶

New in version 1.10.4.

Format of the log_id, which is used to query for a given tasks logs

Type: string
Default: {{dag_id}}-{{task_id}}-{{execution_date}}-{{try_number}}
Environment Variable: AIRFLOW__ELASTICSEARCH__LOG_ID_TEMPLATE

end_of_log_mark¶

New in version 1.10.4.

Used to mark the end of a log stream for a task

Type: string
Default: end_of_log
Environment Variable: AIRFLOW__ELASTICSEARCH__END_OF_LOG_MARK

frontend¶

New in version 1.10.4.

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 https:// automatically, don’t include that here.

Type: string
Default: ''
Environment Variable: AIRFLOW__ELASTICSEARCH__FRONTEND

write_stdout¶

New in version 1.10.4.

Write the task logs to the stdout of the worker, rather than the default files

Type: string
Default: False
Environment Variable: AIRFLOW__ELASTICSEARCH__WRITE_STDOUT

json_format¶

New in version 1.10.4.

Instead of the default log formatter, write the log lines as JSON

Type: string
Default: False
Environment Variable: AIRFLOW__ELASTICSEARCH__JSON_FORMAT

json_fields¶

New in version 1.10.4.

Log fields to also attach to the json output, if enabled

Type: string
Default: asctime, filename, lineno, levelname, message
Environment Variable: AIRFLOW__ELASTICSEARCH__JSON_FIELDS

elasticsearch_configs ¶

use_ssl¶

New in version 1.10.5.

Type: string
Default: False
Environment Variable: AIRFLOW__ELASTICSEARCH_CONFIGS__USE_SSL

verify_certs¶

New in version 1.10.5.

Type: string
Default: True
Environment Variable: AIRFLOW__ELASTICSEARCH_CONFIGS__VERIFY_CERTS

kubernetes ¶

worker_container_repository¶

The repository, tag and imagePullPolicy of the Kubernetes Image for the Worker to Run

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__WORKER_CONTAINER_REPOSITORY

pod_template_file¶

New in version 1.10.11.

Path to the YAML pod file. If set, all other kubernetes-related fields are ignored. (This feature is experimental)

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__POD_TEMPLATE_FILE

worker_container_tag¶

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__WORKER_CONTAINER_TAG

worker_container_image_pull_policy¶

New in version 1.10.2.

Type: string
Default: IfNotPresent
Environment Variable: AIRFLOW__KUBERNETES__WORKER_CONTAINER_IMAGE_PULL_POLICY

delete_worker_pods¶

If True, all worker pods will be deleted upon termination

Type: string
Default: True
Environment Variable: AIRFLOW__KUBERNETES__DELETE_WORKER_PODS

delete_worker_pods_on_failure¶

New in version 1.10.11.

If False (and delete_worker_pods is True), failed worker pods will not be deleted so users can investigate them.

Type: string
Default: False
Environment Variable: AIRFLOW__KUBERNETES__DELETE_WORKER_PODS_ON_FAILURE

worker_pods_creation_batch_size¶

New in version 1.10.3.

Number of Kubernetes Worker Pod creation calls per scheduler loop

Type: string
Default: 1
Environment Variable: AIRFLOW__KUBERNETES__WORKER_PODS_CREATION_BATCH_SIZE

namespace¶

The Kubernetes namespace where airflow workers should be created. Defaults to default

Type: string
Default: default
Environment Variable: AIRFLOW__KUBERNETES__NAMESPACE

multi_namespace_mode¶

New in version 1.10.12.

Allows users to launch pods in multiple namespaces. Will require creating a cluster-role for the scheduler

Type: boolean
Default: False
Environment Variable: AIRFLOW__KUBERNETES__MULTI_NAMESPACE_MODE

airflow_configmap¶

The name of the Kubernetes ConfigMap containing the Airflow Configuration (this file)

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__AIRFLOW_CONFIGMAP
Example: airflow-configmap

airflow_local_settings_configmap¶

New in version 1.10.8.

The name of the Kubernetes ConfigMap containing airflow_local_settings.py file.

For example:

airflow_local_settings_configmap = "airflow-configmap" if you have the following ConfigMap.

airflow-configmap.yaml:

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: airflow-configmap
data:
  airflow_local_settings.py: |
      def pod_mutation_hook(pod):
          ...
  airflow.cfg: |
      ...

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__AIRFLOW_LOCAL_SETTINGS_CONFIGMAP
Example: airflow-configmap

dags_in_image¶

New in version 1.10.2.

For docker image already contains DAGs, this is set to True, and the worker will search for dags in dags_folder, otherwise use git sync or dags volume claim to mount DAGs

Type: string
Default: False
Environment Variable: AIRFLOW__KUBERNETES__DAGS_IN_IMAGE

dags_volume_subpath¶

For either git sync or volume mounted DAGs, the worker will look in this subpath for DAGs

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__DAGS_VOLUME_SUBPATH

dags_volume_mount_point¶

New in version 1.10.11.

For either git sync or volume mounted DAGs, the worker will mount the volume in this path

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__DAGS_VOLUME_MOUNT_POINT

dags_volume_claim¶

For DAGs mounted via a volume claim (mutually exclusive with git-sync and host path)

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__DAGS_VOLUME_CLAIM

logs_volume_subpath¶

For volume mounted logs, the worker will look in this subpath for logs

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__LOGS_VOLUME_SUBPATH

logs_volume_claim¶

A shared volume claim for the logs

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__LOGS_VOLUME_CLAIM

dags_volume_host¶

New in version 1.10.2.

For DAGs mounted via a hostPath volume (mutually exclusive with volume claim and git-sync) Useful in local environment, discouraged in production

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__DAGS_VOLUME_HOST

logs_volume_host¶

New in version 1.10.2.

A hostPath volume for the logs Useful in local environment, discouraged in production

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__LOGS_VOLUME_HOST

env_from_configmap_ref¶

New in version 1.10.3.

A list of configMapsRefs to envFrom. If more than one configMap is specified, provide a comma separated list: configmap_a,configmap_b

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__ENV_FROM_CONFIGMAP_REF

env_from_secret_ref¶

New in version 1.10.3.

A list of secretRefs to envFrom. If more than one secret is specified, provide a comma separated list: secret_a,secret_b

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__ENV_FROM_SECRET_REF

git_repo¶

Git credentials and repository for DAGs mounted via Git (mutually exclusive with volume claim)

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__GIT_REPO

git_branch¶

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__GIT_BRANCH

git_sync_depth¶

New in version 1.10.11.

Use a shallow clone with a history truncated to the specified number of commits. 0 - do not use shallow clone.

Type: string
Default: 1
Environment Variable: AIRFLOW__KUBERNETES__GIT_SYNC_DEPTH

git_subpath¶

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__GIT_SUBPATH

git_sync_rev¶

New in version 1.10.7.

The specific rev or hash the git_sync init container will checkout This becomes GIT_SYNC_REV environment variable in the git_sync init container for worker pods

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__GIT_SYNC_REV

git_user¶

Use git_user and git_password for user authentication or git_ssh_key_secret_name and git_ssh_key_secret_key for SSH authentication

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__GIT_USER

git_password¶

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__GIT_PASSWORD

git_sync_root¶

New in version 1.10.2.

Type: string
Default: /git
Environment Variable: AIRFLOW__KUBERNETES__GIT_SYNC_ROOT

git_sync_dest¶

New in version 1.10.2.

Type: string
Default: repo
Environment Variable: AIRFLOW__KUBERNETES__GIT_SYNC_DEST

git_dags_folder_mount_point¶

New in version 1.10.2.

Mount point of the volume if git-sync is being used. i.e. {AIRFLOW_HOME}/dags

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__GIT_DAGS_FOLDER_MOUNT_POINT

git_ssh_key_secret_name¶

New in version 1.10.3.

To get Git-sync SSH authentication set up follow this format

airflow-secrets.yaml:

---
apiVersion: v1
kind: Secret
metadata:
  name: airflow-secrets
data:
  # key needs to be gitSshKey
  gitSshKey: <base64_encoded_data>

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__GIT_SSH_KEY_SECRET_NAME
Example: airflow-secrets

git_ssh_known_hosts_configmap_name¶

New in version 1.10.3.

To get Git-sync SSH authentication set up follow this format

airflow-configmap.yaml:

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: airflow-configmap
data:
  known_hosts: |
      github.com ssh-rsa <...>
  airflow.cfg: |
      ...

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__GIT_SSH_KNOWN_HOSTS_CONFIGMAP_NAME
Example: airflow-configmap

git_sync_credentials_secret¶

New in version 1.10.5.

To give the git_sync init container credentials via a secret, create a secret with two fields: GIT_SYNC_USERNAME and GIT_SYNC_PASSWORD (example below) and add git_sync_credentials_secret = <secret_name> to your airflow config under the kubernetes section

Secret Example:

---
apiVersion: v1
kind: Secret
metadata:
  name: git-credentials
data:
  GIT_SYNC_USERNAME: <base64_encoded_git_username>
  GIT_SYNC_PASSWORD: <base64_encoded_git_password>

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__GIT_SYNC_CREDENTIALS_SECRET

git_sync_container_repository¶

For cloning DAGs from git repositories into volumes: https://github.com/kubernetes/git-sync

Type: string
Default: k8s.gcr.io/git-sync
Environment Variable: AIRFLOW__KUBERNETES__GIT_SYNC_CONTAINER_REPOSITORY

git_sync_container_tag¶

Type: string
Default: v3.1.1
Environment Variable: AIRFLOW__KUBERNETES__GIT_SYNC_CONTAINER_TAG

git_sync_init_container_name¶

Type: string
Default: git-sync-clone
Environment Variable: AIRFLOW__KUBERNETES__GIT_SYNC_INIT_CONTAINER_NAME

git_sync_run_as_user¶

New in version 1.10.5.

Type: string
Default: 65533
Environment Variable: AIRFLOW__KUBERNETES__GIT_SYNC_RUN_AS_USER

worker_service_account_name¶

The name of the Kubernetes service account to be associated with airflow workers, if any. Service accounts are required for workers that require access to secrets or cluster resources. See the Kubernetes RBAC documentation for more: https://kubernetes.io/docs/admin/authorization/rbac/

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__WORKER_SERVICE_ACCOUNT_NAME

image_pull_secrets¶

Any image pull secrets to be given to worker pods, If more than one secret is required, provide a comma separated list: secret_a,secret_b

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__IMAGE_PULL_SECRETS

gcp_service_account_keys¶

GCP Service Account Keys to be provided to tasks run on Kubernetes Executors Should be supplied in the format: key-name-1:key-path-1,key-name-2:key-path-2

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__GCP_SERVICE_ACCOUNT_KEYS

in_cluster¶

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.

Type: string
Default: True
Environment Variable: AIRFLOW__KUBERNETES__IN_CLUSTER

cluster_context¶

New in version 1.10.3.

When running with in_cluster=False change the default cluster_context or config_file options to Kubernetes client. Leave blank these to use default behaviour like kubectl has.

Type: string
Default: None
Environment Variable: AIRFLOW__KUBERNETES__CLUSTER_CONTEXT

config_file¶

New in version 1.10.3.

Type: string
Default: None
Environment Variable: AIRFLOW__KUBERNETES__CONFIG_FILE

affinity¶

New in version 1.10.2.

Affinity configuration as a single line formatted JSON object. See the affinity model for top-level key names (e.g. nodeAffinity, etc.): https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.12/#affinity-v1-core

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__AFFINITY

tolerations¶

New in version 1.10.2.

A list of toleration objects as a single line formatted JSON array See: https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.12/#toleration-v1-core

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__TOLERATIONS

kube_client_request_args¶

New in version 1.10.4.

Keyword parameters to pass while calling a kubernetes client core_v1_api methods from Kubernetes Executor provided as a single line formatted JSON dictionary string. List of supported params are similar for all core_v1_apis, hence a single config variable for all apis. See: https://raw.githubusercontent.com/kubernetes-client/python/master/kubernetes/client/apis/core_v1_api.py Note that if no _request_timeout is specified, the kubernetes client will wait indefinitely for kubernetes api responses, which will cause the scheduler to hang. The timeout is specified as [connect timeout, read timeout]

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__KUBE_CLIENT_REQUEST_ARGS

delete_option_kwargs¶

New in version 1.10.12.

Optional keyword arguments to pass to the delete_namespaced_pod kubernetes client core_v1_api method when using the Kubernetes Executor. This should be an object and can contain any of the options listed in the v1DeleteOptions class defined here: https://github.com/kubernetes-client/python/blob/41f11a09995efcd0142e25946adc7591431bfb2f/kubernetes/client/models/v1_delete_options.py#L19

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__DELETE_OPTION_KWARGS
Example: {"grace_period_seconds": 10}

run_as_user¶

New in version 1.10.3.

Specifies the uid to run the first process of the worker pods containers as

Type: string
Default: 50000
Environment Variable: AIRFLOW__KUBERNETES__RUN_AS_USER

fs_group¶

New in version 1.10.3.

Specifies a gid to associate with all containers in the worker pods if using a git_ssh_key_secret_name use an fs_group that allows for the key to be read, e.g. 65533

Type: string
Default: ''
Environment Variable: AIRFLOW__KUBERNETES__FS_GROUP

kubernetes_node_selectors ¶

The Key-value pairs to be given to worker pods. The worker pods will be scheduled to the nodes of the specified key-value pairs. Should be supplied in the format: key = value

kubernetes_annotations ¶

The Key-value annotations pairs to be given to worker pods. Should be supplied in the format: key = value

kubernetes_environment_variables ¶

The scheduler sets the following environment variables into your workers. You may define as many environment variables as needed and the kubernetes launcher will set them in the launched workers. Environment variables in this section are defined as follows <environment_variable_key> = <environment_variable_value>

For example if you wanted to set an environment variable with value prod and key ENVIRONMENT you would follow the following format: ENVIRONMENT = prod

Additionally you may override worker airflow settings with the AIRFLOW__<SECTION>__<KEY> formatting as supported by airflow normally.

kubernetes_secrets ¶

The scheduler mounts the following secrets into your workers as they are launched by the scheduler. You may define as many secrets as needed and the kubernetes launcher will parse the defined secrets and mount them as secret environment variables in the launched workers. Secrets in this section are defined as follows <environment_variable_mount> = <kubernetes_secret_object>=<kubernetes_secret_key>

For example if you wanted to mount a kubernetes secret key named postgres_password from the kubernetes secret object airflow-secret as the environment variable POSTGRES_PASSWORD into your workers you would follow the following format: POSTGRES_PASSWORD = airflow-secret=postgres_credentials

Additionally you may override worker airflow settings with the AIRFLOW__<SECTION>__<KEY> formatting as supported by airflow normally.

kubernetes_labels ¶

The Key-value pairs to be given to worker pods. The worker pods will be given these static labels, as well as some additional dynamic labels to identify the task. Should be supplied in the format: key = value