First time login to Apache Airflow asks for username and password, what is the username and password?

There is no default username and password created if you are just using python wheel.

Run the following to create a user:

For Airflow >=2.0.0:

airflow users  create --role Admin --username admin --email admin --firstname admin --lastname admin --password admin

OR

For Airflow <1.10.14:

airflow create_user -r Admin -u admin -e admin@example.com -f admin -l user -p admin