vengi57 opened a new issue #17646:
URL: https://github.com/apache/airflow/issues/17646
**Apache Airflow version**:
Version - 2.1.1
**OS**:
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
**Apache Airflow Provider versions**:
apache-airflow-providers-ftp==2.0.0
apache-airflow-providers-imap==2.0.0
apache-airflow-providers-postgres==2.0.0
apache-airflow-providers-sqlite==2.0.0
**Deployment**:
VM
**What happened**:
Getting this warning message
The scheduler does not appear to be running. The last heartbeat was received
2 days ago. The DAGs list may not update, and new tasks will not be scheduled
So that when I trigger my DAG it was stuck in the in-progress state for a
long time and none of the tasks of DAGs are running
If I restart the scheduler it was working fine for some hours but again
getting the same above mentioned issue
**What you expected to happen**:
The scheduler should work properly in order to execute the dags which will
take around 3 to 5 hrs to complete
<!-- What do you think went wrong? -->
Even though no DAGs are running we getting "The scheduler does not appear to
be running. The last heartbeat was received 2 days ago. The DAGs list may not
update, and new tasks will not be scheduled" error
**How to reproduce it**:
1.Install Airflow
2. Change the executor to Local Executor
3. Change sql_alchemy_conn to Postgres DB
4. Run airflow webserver &
5. Run airflow scheduler &
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**Anything else we need to know**:
This problem occurs when not dags are running for a while and getting The
scheduler does not appear to be running error
Attached screenshot of the issue
If I checked the scheduler status with /heath API getting unhealthy for the
scheduler
Attached airflow.cfg file for the reference
[airflow.txt](https://github.com/apache/airflow/files/6997420/airflow.txt)
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