airflow重启出现Error: Already running on PID 8254 (or pid file '/root/airflow/airflow-webserver.pid' is
重启airflow出现以下错误。
[root@localhost example]# airflow webserver -p 8080 &
Error: Already running on PID 8254 (or pid file '/root/airflow/airflow-webserver.pid' is stale)
解决办法：找到该进行号的进程，找到进程号后第二列，再查找第二列为进程号的进程
[root@localhost example]#
[root@localhost example]# ps -ef | grep 8254
root 8254 8252 0 09:58 pts/1 00:00:01 [gunicorn: maste] <defunct>
root 8319 7986 0 10:02 pts/0 00:00:00 grep --color=auto 8254
[root@localhost example]# ps -ef | grep 8252
root 8252 7890 10 09:58 pts/1 00:00:25 /root/anaconda3/bin/python /root/anaconda3/bin/airflow webserver -p 8080
root 8254 8252 0 09:58 pts/1 00:00:01 [gunicorn: maste] <defunct>
root 8323 7986 0 10:03 pts/0 00:00:00 grep --color=auto 8252
[root@localhost example]# kill 8252
重新重启airflow webserver
[root@localhost example]# airflow webserver -p 8080 &
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