How to restart Celery gracefully without delaying tasks

Question

We use Celery with our Django webapp to manage offline tasks; some of these tasks can run up to 120 seconds.

Whenever we make any code modifications, we need to rest

Answer 1

Well you using SIGHUP (1) for warm shutdown of celery. I am not sure if it actually causes a warm shutdown. But SIGINT (2) would cause a warm shutdown. Try SIGINT in place of SIGHUP and then start celery manually in your script (I guess).