我配置了两个在supervisor下运行的celerycam进程。这是我的部分上司。conf:
[program:dev1_celerycam]
directory = /var/www/dev1.example.com
command = /usr/bin/python2.7 /var/www/dev1.example.com/manage.py celerycam --logfile=/var/log/supervisor/dev1_celerycam.log --workdir=/var/www/dev1.example.com
stderr_logfile = /var/log/supervisor/dev1_celerycam_error.log
stdout_logfile = /var/log/supervisor/dev1_celerycam.log
exitcodes=0,2
priority=993
[program:dev_celerycam]
directory = /var/www/dev.example.com
command = /usr/bin/python2.7 /var/www/dev.example.com/manage.py celerycam --logfile=/var/log/supervisor/dev_celerycam.log --workdir=/var/www/dev.example.com
stderr_logfile = /var/log/supervisor/dev_celerycam_error.log
stdout_logfile = /var/log/supervisor/dev_celerycam.log
exitcodes=0,2
priority=995
另外，我在supervisord.conf中有两个celeryd进程。它们在同一台服务器上启动得非常好。但对于其中一个celerycam过程，我将在supervisord.log中获得下一个：
2013-09-01 09:35:12,546 INFO exited: dev_celerycam (exit status 1; not expected)
2013-09-01 09:35:12,546 INFO received SIGCLD indicating a child quit
2013-09-01 09:35:15,555 INFO spawned: 'dev_celerycam' with pid 25504
2013-09-01 09:35:16,540 INFO exited: dev_celerycam (exit status 1; not expected)
2013-09-01 09:35:16,540 INFO received SIGCLD indicating a child quit
2013-09-01 09:35:17,542 INFO gave up: dev_celerycam entered FATAL state, too many start retries too quickly
在supervisord重新启动时，dev_celerycam或dev1_celerycam会出现这种情况。其中一个开始很好，而另一个失败了。看起来它是随机发生的。
有没有机会让两个celerycam流程都正常工作？
两个celerycam进程都以某种方式在同一路径中创建了pid文件。必须为每个celerycam进程添加--pidfile参数。