airflow.cfg

[core]
# The home folder for airflow, default is ~/airflow
airflow_home = $AIRFLOW_HOME

# The folder where you airflow pipelines live, most likely a
# subfolder in a code repository
dags_folder = $AIRFLOW_HOME/dags

# The folder where airflow should store its log files
base_log_folder = $AIRFLOW_HOME/logs

# The executor class that airflow should use. Choices include
# SequentialExecutor, LocalExecutor, CeleryExecutor
executor = SequentialExecutor

# The SqlAlchemy connection string to the metadata database.
# SqlAlchemy supports many different database engine, more information
# their website
sql_alchemy_conn = $DATABASE_URL

# 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
parallelism = 10

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

# Where your Airflow plugins are stored
plugins_folder = $AIRFLOW_HOME/plugins

# Secret key to save connection passwords in the db
fernet_key = $AIRFLOW_FERNET_KEY

[webserver]
# The base url of your website as airflow cannot guess what domain or
# cname you are using. This is use in automated emails that
# airflow sends to point links to the right web server
base_url = $URL

# The ip specified when starting the web server
web_server_host = 0.0.0.0

# The port on which to run the web server
web_server_port = $PORT

# Secret key used to run your flask app
secret_key = $AIRFLOW_SECRET_KEY

# Needed for authentication
authenticate = True


[smtp]
# If you want airflow to send emails on retries, failure, and you want to
# the airflow.utils.send_email function, you have to configure an smtp
# server here
smtp_host = $MAILGUN_SMTP_SERVER
smtp_user = $MAILGUN_SMTP_LOGIN
smtp_port = $MAILGUN_SMTP_PORT
smtp_password = $MAILGUN_SMTP_PASSWORD
smtp_mail_from = airflow@example.com

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

# The app name that will be used by celery
celery_app_name = airflow.executors.celery_executor

# The concurrency that will be used when starting workers with the
# "airflow 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
celeryd_concurrency = 16

# 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.
worker_log_server_port = 8793

# The Celery broker URL. Celery supports RabbitMQ, Redis and experimentally
# a sqlalchemy database. Refer to the Celery documentation for more
# information.
broker_url = $REDIS_URL

# Another key Celery setting
celery_result_backend = $REDIS_URL

# Celery Flower is a sweet UI for Celery. Airflow has a shortcut to start
# it `airflow flower`. This defines the port that Celery Flower runs on
flower_port = 8383

# Default queue that tasks get assigned to and that worker listen on.
default_queue = default

[scheduler]
# 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).
job_heartbeat_sec = 5

# 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).
scheduler_heartbeat_sec = 5

# Statsd (https://github.com/etsy/statsd) integration settings
# statsd_on =  False
# statsd_host =  localhost
# statsd_port =  8125
# statsd_prefix = airflow

[oauth]
# Valid oauth providers include google and that's it
provider = 'google'
client_id = $OAUTH_CLIENT_ID
client_secret = $OAUTH_CLIENT_SECRET