DAG doesn't appear in Airflow Web UI

Question

I try to create simple DAG:

from airflow.models import BaseOperator, Param
from airflow.models.dag import dag
from airflow.utils.dates import days_ago

default_args = {
    'owner': 'airflow',
    'start_date': days_ago(1),
}


@dag(dag_id='my_dag', default_args=default_args, schedule_interval=None)
def my_dag(param: str = Param(default='option1', choices=['option1', 'option2', 'option3'])):

    print_value_task = BaseOperator(
        task_id='print_value',
        python_callable=lambda: print(f'The value of param3 is: {param}')
    )

    print_value_task

If I make some errors in code Web UI shows errors. If there are no errors in code, DAG doesn't appear in Web UI and I can't trigger my DAG manually.

What do I do wrong?

I use Docker image for Airflow and put my dags in folder that Docker use for volume between host and container.

Whats configured as your DAG directory? Can you see dag files in the same directory from the shell? — Jadav Bheda, Apr 20 '23 at 05:32
@JadavBheda I opened console, entered: cd dags, ls and I've seen my file my_dag.py is here. — Alexander Lopatin, Apr 20 '23 at 05:36

score 0 · Answer 1 · answered Apr 21 '23 at 16:29

0

You should be sure that the scheduler process is running, if not, enter your container and do airflow scheduler &.

answered Apr 21 '23 at 16:29

Dmitry Zhyhimont

56
4

DAG doesn't appear in Airflow Web UI

1 Answers1