Airflow UI overview - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the Airflow webserver.

Apache Airflow

airflow [1]

Drag options to blanks, or click blank then click option'

Awebserver

Bscheduler

Ctriggerer

Dworker

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'scheduler' instead of 'webserver' starts the background scheduler, not the UI.

Using 'worker' or 'triggerer' does not start the UI.

The webserver command starts the Airflow UI server where you can view DAGs and tasks.

2fill in blank

medium

Complete the URL to access the Airflow UI on the local machine.

Apache Airflow

http://localhost:[1]

Drag options to blanks, or click blank then click option'

A8080

B5000

C8000

D9000

Attempts:

3 left

💡 Hint

Common Mistakes

Using port 5000 or 8000 which are common for other web apps but not Airflow.

Using port 9000 which is unrelated.

By default, Airflow's webserver runs on port 8080, so the UI is accessed at http://localhost:8080.

3fill in blank

hard

Fix the error in the command to list all DAGs in Airflow.

Apache Airflow

airflow [1] list

Drag options to blanks, or click blank then click option'

Awebserver

Btasks

Cscheduler

Ddags

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'webserver' or 'scheduler' which are unrelated to listing DAGs.

Using 'tasks' which is for task operations, not DAG listing.

The correct command to list DAGs is airflow dags list.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps DAG ids to their owners if the owner is 'airflow'.

Apache Airflow

{dag.dag_id: dag.owner for dag in dags if dag.[1] [2] 'airflow'}

Drag options to blanks, or click blank then click option'

Aowner

B==

C!=

Ddag_id

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' instead of '==' causes filtering of wrong DAGs.

Using 'dag_id' instead of 'owner' in the condition.

This comprehension filters DAGs where the owner equals 'airflow' and maps their IDs to owners.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps DAG ids to their start dates if the start date is after 2023-01-01.

Apache Airflow

{dag.[1]: dag.[2] for dag in dags if dag.[3] > '2023-01-01'}

Drag options to blanks, or click blank then click option'

Adag_id

Bstart_date

Downer

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'owner' instead of 'start_date' for filtering or values.

Mixing up keys and values in the comprehension.

This comprehension creates a dictionary of DAG ids to their start dates, filtering only those starting after January 1, 2023.