Celery Stuck At Mingle: Searching For Neighbors, Doesn't Get To Ready State

I had run celery for my project using 10 threads. It worked perfectly. Now, when i use the command: celery -A tasks worker --loglevel=info --concurrency 10 celery get stuck at : [

Solution 1:

Check your free disk space. RabbitMQ requires 1Gb of free space by default.

Solution 2:

For further information, the RabbitMQ requires 1Gb if in standalone. If you are running a RabbitMQ cluster all nodes of the cluster should have 1Gb free disk space.

Solution 3:

If you use the Database backend, adding the following options to celery should solve the problem: --without-gossip --without-mingle.

See the related issue on github.

Solution 4:

This problem was because the RabbitMQ message broker crashed, restarting it worked.