try running them in verbose mode: $ sh -x /etc/init.d/celeryd start This can reveal hints as to why the service won’t start. 60 Chapter 4. Cookbook Celery Documentation, Release 2.0.3 (stable) Also just hanging – Why is Task.delay/apply*/celeryd just hanging? – Why won’t celeryd run on FreeBSD? – I’m having IntegrityError: Duplicate Key errors. Why? – Why aren’t my tasks processed? – Why won’t my Task Task run? – Why won’t my Periodic Task run? – How do I discard all waiting tasks? – I’ve discarded messages, but there are still messages left in the queue? • Results – How do I get the result of a task

try running them in verbose mode: $ sh -x /etc/init.d/celeryd start This can reveal hints as to why the service won’t start. Also you will see the commands generated, so you can try to run the celeryd hanging Why is Task.delay/apply*/celeryd just hanging? Why won’t celeryd run on FreeBSD? I’m having IntegrityError: Duplicate Key errors. Why? Why aren’t my tasks processed? Why won’t my Task run? Why won’t the queue? Results How do I get the result of a task if I have the ID that points there? Brokers Why is RabbitMQ crashing? Can I use celery with ActiveMQ/STOMP? What features are not supported when using

set must be saved in advance, so the task doesn’t # try to restore it before that happens. This is why we # use the ‘apply_presaved_taskset‘ below. result = TaskSetResult.restore(setid) current = self complete, and there are 10 new tasks coming in every minute, the queue will never be empty. This is why it’s very important that you monitor queue lengths! A way to do this is by using Munin. You should try running them in verbose mode: $ sh -x /etc/init.d/celeryd start This can reveal hints as to why the service won’t start. Also you will see the commands generated, so you can try to run the celeryd

complete, and there are 10 new tasks coming in every minute, the queue will never be empty. This is why it’s very important that you monitor queue lengths! A way to do this is by using Munin. You should try running them in verbose mode: $ sh -x /etc/init.d/celeryd start This can reveal hints as to why the service won’t start. Also you will see the commands generated, so you can try to run the celeryd Code of Conduct The goal is to maintain a diverse community that is pleasant for everyone. That is why we would greatly appreciate it if everyone contributing to and interacting with the community also

should I use celery for? Answer: Queue everything and delight everyone is a good article describing why you would use a queue in a web context. These are some common use cases: • Running something in the celery for Django only? Answer: No. You can use all of the features without using Django. 6.2.3 Why is Django a dependency? Celery uses the Django ORM for database access when using the database result hanging Answer: See MySQL is throwing deadlock errors, what can I do?. or Why is Task.delay/apply* just hanging?. 6.3.3 Why is Task.delay/apply*/celeryd just hanging? Answer: There is a bug in some

advance, so the task doesn't # try to restore it before that happens. This is why we # use the `apply_presaved_taskset` below. result = TaskSetResult complete, and there are 10 new tasks coming in every minute, the queue will never be empty. This is why it’s very important that you monitor queue lengths! A way to do this is by using Munin. You should try running them in verbose mode: $ sh -x /etc/init.d/celeryd start This can reveal hints as to why the service won’t start. Also you will see the commands generated, so you can try to run the celeryd

try running them in verbose mode: $ sh -x /etc/init.d/celeryd start This can reveal hints as to why the service won’t start. 82 Chapter 4. Cookbook Celery Documentation, Release 2.1.4 Also you will Code of Conduct The goal is to maintain a diverse community that is pleasant for everyone. That is why we would greatly appreciate it if everyone contributing to and interacting with the community also just hanging – Why is Task.delay/apply*/celeryd just hanging? – Why won’t celeryd run on FreeBSD? – I’m having IntegrityError: Duplicate Key errors. Why? – Why aren’t my tasks processed? – Why won’t my Task

[http://decafbad.com/blog/2008/07/04/queue- everything-and-delight-everyone] is a good article describing why you would use a queue in a web context. These are some common use cases: Running something in the Is celery for Django only? Answer: No. You can use all of the features without using Django. Why is Django a dependency? Celery uses the Django ORM for database access when using the database result just hanging Answer: See MySQL is throwing deadlock errors, what can I do?. or Why is Task.delay/apply* just hanging?. Why is Task.delay/apply*/celeryd just hanging? Answer: There is a bug in some AMQP

complete, and there are 10 new tasks coming in every minute, the queue will never be empty. This is why it’s very important that you monitor queue lengths! A way to do this is by using Munin. You should try running them in verbose mode: $ sh -x /etc/init.d/celeryd start This can reveal hints as to why the service won’t start. Also you will see the commands generated, so you can try to run the celeryd Code of Conduct The goal is to maintain a diverse community that is pleasant for everyone. That is why we would greatly appreciate it if everyone contributing to and interacting with the community also

try running them in verbose mode: $ sh -x /etc/init.d/celeryd start This can reveal hints as to why the service won’t start. Also you will see the commands generated, so you can try to run the celeryd Code of Conduct The goal is to maintain a diverse community that is pleasant for everyone. That is why we would greatly appreciate it if everyone contributing to and interacting with the community also hanging Why is Task.delay/apply*/celeryd just hanging? Why won’t celeryd run on FreeBSD? I’m having IntegrityError: Duplicate Key errors. Why? Why aren’t my tasks processed? Why won’t my Task run? Why won’t