Add duplicate hostname check for Celery workers#58591
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jscheffl merged 2 commits intoapache:mainfrom Nov 23, 2025
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Prevent launching a new Celery worker if another worker with the same hostname is already running. The check queries active workers via the Celery inspect API and raises an error if a worker with the specified hostname already exists. This prevents confusion and potential conflicts from having multiple workers with identical hostnames
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jscheffl
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This was referenced Nov 27, 2025
Copilot AI
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Dec 5, 2025
* Add duplicate hostname check for Celery workers Prevent launching a new Celery worker if another worker with the same hostname is already running. The check queries active workers via the Celery inspect API and raises an error if a worker with the specified hostname already exists. This prevents confusion and potential conflicts from having multiple workers with identical hostnames * Fix tests
itayweb
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Dec 6, 2025
* Add duplicate hostname check for Celery workers Prevent launching a new Celery worker if another worker with the same hostname is already running. The check queries active workers via the Celery inspect API and raises an error if a worker with the specified hostname already exists. This prevents confusion and potential conflicts from having multiple workers with identical hostnames * Fix tests
Subham-KRLX
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Mar 4, 2026
* Add duplicate hostname check for Celery workers Prevent launching a new Celery worker if another worker with the same hostname is already running. The check queries active workers via the Celery inspect API and raises an error if a worker with the specified hostname already exists. This prevents confusion and potential conflicts from having multiple workers with identical hostnames * Fix tests
shivaam
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Mar 21, 2026
The duplicate hostname check (added in apache#58591) calls celery_app.control.inspect().active_queues() which lazily initializes celery_app.amqp._producer_pool. When worker_main() subsequently forks prefork pool workers, children inherit this stale producer pool with the parent's Redis connection, breaking consumer-to-pool task dispatch. Reset _producer_pool to None after the inspect block so worker_main() initializes it fresh in the correct process context after forking. closes: apache#59707
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Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames