运行systemd时为什么我的服务总是退出？ 如果将dir manualy改为var / www / enterprise / src /并执行/ var / www / env / bin / celery -A catalog.tasks beat，proccess work perfect
root@debian-django-nginx:/var/www/enterprise/src# cat /etc/systemd/system/celerybeat.service
[Unit]
Description=celery beat
[Service]
WorkingDirectory=/var/www/enterprise/src/
Type=simple
ExecStart=/var/www/env/bin/celery -A catalog.tasks beat &
KillMode=process
TimeoutSec=300
[Install]
WantedBy=multi-user.target
root@debian-django-nginx:/var/www/enterprise/src# systemctl daemon-reload
root@debian-django-nginx:/var/www/enterprise/src# systemctl start celerybeat
root@debian-django-nginx:/var/www/enterprise/src# systemctl status celerybeat
● celerybeat.service - celery beat
Loaded: loaded (/etc/systemd/system/celerybeat.service; enabled)
Active: active (exited) since Tue 2017-02-28 15:01:52 +10; 1 weeks 0 days ago
Mar 07 14:11:55 debian-django-nginx systemd[1]: celerybeat.service lacks ExecStart setting. Refusing.
Mar 07 14:28:08 debian-django-nginx systemd[1]: Started celery beat.
Mar 07 14:39:34 debian-django-nginx systemd[1]: Started celery beat.
Mar 07 15:05:56 debian-django-nginx systemd[1]: Started celery beat.
Mar 07 15:08:46 debian-django-nginx systemd[1]: Started celery beat.
Mar 07 15:19:35 debian-django-nginx systemd[1]: Started celery beat.
Mar 07 15:33:38 debian-django-nginx systemd[1]: Started celery beat.