kill这个残留进程然后直接重新启动airflow webserver就OK
(wqbin) rdev@testhk1:~/etl/py_etl/warehouse$ cat /home/rdev/airflow/airflow-webserver.pid 22603 (wqbin) rdev@testhk1:~/etl/py_etl/warehouse$ ps -ef |grep 22603 rdev 11196 10264 0 14:12 pts/2 00:00:00 grep --color=auto 22603 rdev 22603 1 0 Nov27 ? 00:01:17 gunicorn: master [airflow-webserver] rdev 23277 22603 0 Nov27 ? 00:00:02 [ready] gunicorn: worker [airflow-webserver] rdev 23278 22603 0 Nov27 ? 00:00:02 [ready] gunicorn: worker [airflow-webserver] rdev 23279 22603 0 Nov27 ? 00:00:02 [ready] gunicorn: worker [airflow-webserver] rdev 23280 22603 0 Nov27 ? 00:00:02 [ready] gunicorn: worker [airflow-webserver] (wqbin) rdev@testhk1:~/etl/py_etl/warehouse$ kill -9 22603 (wqbin) rdev@testhk1:~/etl/py_etl/warehouse$ ps -ef |grep 22603