I am using airflow for my data pipeline project. I have configured my project in airflow and start the airflow server as a backend process using following command
Can you check $AIRFLOW_HOME/airflow-webserver.pid for the process id of your webserver daemon?
$AIRFLOW_HOME/airflow-webserver.pid
Then pass it a kill signal to kill it
cat $AIRFLOW_HOME/airflow-webserver.pid | xargs kill -9
Then just run
airflow webserver -p 8080 -D True
to restart the daemon