Airflow scheduler not running, Last heartbeat was received % seconds ago. Last heartbeat was received 3 minutes ago. The short version is that users of PostgreSQL 12+ or MySQL 8. Incompatible packages may cause database and scheduler failures. If confirmed, consider increasing core. Jun 13, 2021 · The airflow webserver -D immediately crashes after starting, and airflow scheduler -D somehow does next to nothing for me. Sep 28, 2021 · The next day, when I open Airflow I see the message "The scheduler does not appear to be running". 2, we have seen that there is a warning stating "The scheduler does not appear to be running" intermittently. This is almost certainly something specific to your deployment (others do not experience it). If the issue recurs, please open a support ticket so the backend team can validate and remediate. Then I have to manually run te command again to start the scheduler. To avoid issues with scheduling, you can: Adjust your DAGs to use a smaller number of more Oct 24, 2021 · There must be something in your DAGs or task that simply causes the Airflow scheduler to lock up. dag_file_processor_timeout. By ronaldoolegario 29 de May de 2020 Apache Airflow Schedule. May 29, 2020 · Apache Airflow Schedule: The scheduler does not appear to be running. This warning goes away by simply re Apr 16, 2024 · The scheduler does not appear to be running. The DAGs list may not update, and new tasks will not be scheduled. If a task’s Dag failed to parse on the worker, the scheduler may mark the task as failed. May 11, 2023 · Apache Airflow version 2. Weirdly enough, it works without the detach flag. Oct 9, 2023 · Next, Restart the Airflow Scheduler Pod by Deleting the Airflow Scheduler Pod, upon which the Airflow Scheduler Pod would be Recreated implicitly. dagbag_import_timeout and dag_processor. Aug 11, 2025 · Ensure that only supported Python packages and Airflow provider versions are installed in Managed Airflow. 6. Next, Engage Cloudera Support with the CDE Diagnostics Bundle captured above. But what it is, it's hard to say from the information provided. 3 days ago · Airflow can have issues when scheduling a large number of DAGs or tasks at the same time. 0+ are all ready to go – you can start running as many copies of the scheduler as you like – there is no further set up or config options needed. Sep 27, 2024 · In the MWAA-UI I saw the message "The scheduler does not appear to be running. 0 from 2. " showed 3 days ago · Troubleshooting Airflow scheduler issues Save and categorize content based on your preferences On this page Identify the source of the issue Inspect DAG processing issues Monitoring running and queued tasks Troubleshooting issues at DAG parse time Number and time distribution of tasks Scaling Airflow configuration If the scheduler doesn't appear to be running, or the last "heart beat" was received several hours ago, your DAGs may not appear in Apache Airflow, and new tasks will not be scheduled. 0 What happened Ever since we upgraded to Airflow 2. 5.


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