Airflow: how to delete a DAG?

Question

I have started the Airflow webserver and scheduled some dags. I can see the dags on web GUI.

How can I delete a particular DAG from being run and shown in web GUI? I

Answer 1

For those who have direct access to the Postgres psql console of the airflow db, you can simply execute the following request to remove the DAG:

\set dag_id YOUR_DAG_ID

delete from xcom where dag_id=:'dag_id';
delete from task_instance where dag_id=:'dag_id';
delete from sla_miss where dag_id=:'dag_id';
delete from log where dag_id=:'dag_id';
delete from job where dag_id=:'dag_id';
delete from dag_run where dag_id=:'dag_id';
delete from dag where dag_id=:'dag_id';

A similar (with minor changes) query is suitable for other databases, such as MySQL and SQLite.