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Configuring Flask Application for Airflow Webserver

FabAuthManager and Airflow 2 plugins uses Flask to render the web UI.When initialized, predefined configuration is used, based on the webserver section of the airflow.cfg file. You can override these settings and add any extra settings by adding flask configuration to webserver_config.py file specified in [fab] config_file (by default it is $AIRFLOW_HOME/webserver_config.py). This file is automatically loaded by the webserver.

For example if you would like to change rate limit strategy to "moving window", you can set the RATELIMIT_STRATEGY to moving-window.

You could also enhance / modify the underlying flask app directly, as the app context <https://flask.palletsprojects.com/en/2.3.x/appcontext/>_ is pushed to webserver_config.py:

.. code-block:: python

from flask import current_app as app


@app.before_request
def print_custom_message() -> None:
    print("Executing before every request")