celery-worker - Start worker instance.
Start worker instance.
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Examples
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$ celery --app=proj worker -l INFO
$ celery -A proj worker -l INFO -Q hipri,lopri
$ celery -A proj worker --concurrency=4
$ celery -A proj worker --concurrency=1000 -P eventlet
$ celery worker --autoscale=10,0
- -n, --hostname
HOSTNAME
- Set custom hostname (e.g., 'w1@%%h'). Expands: %%h (hostname), %%n (name)
and %%d, (domain).
- -D, --detach
- Start worker as a background process.
- -S, --statedb PATH
- Path to the state database. The extension '.db' may be appended to the
filename.
- -l, --loglevel
[DEBUG|INFO|WARNING|ERROR|CRITICAL|FATAL]
- Logging level.
- -O, --optimization
[default|fair]
- Apply optimization profile.
- --prefetch-multiplier
<prefetch multiplier>
- Set custom prefetch multiplier value for this worker instance.
- -c, --concurrency
<concurrency>
- Number of child processes processing the queue. The default is the number
of CPUs available on your system.
- -P, --pool
[prefork|eventlet|gevent|solo|processes|threads|custom]
- Pool implementation.
- -E, --task-events,
--events
- Send task-related events that can be captured by monitors like celery
events, celerymon, and others.
- --time-limit
FLOAT
- Enables a hard time limit (in seconds int/float) for tasks.
- --soft-time-limit
FLOAT
- Enables a soft time limit (in seconds int/float) for tasks.
- --max-tasks-per-child
INTEGER
- Maximum number of tasks a pool worker can execute before it's terminated
and replaced by a new worker.
- --max-memory-per-child
INTEGER
- Maximum amount of resident memory, in KiB, that may be consumed by a child
process before it will be replaced by a new one. If a single task causes a
child process to exceed this limit, the task will be completed and the
child process will be replaced afterwards. Default: no limit.
- --purge,
--discard
- -Q, --queues COMMA
SEPARATED LIST
- -X, --exclude-queues COMMA
SEPARATED LIST
- -I, --include COMMA
SEPARATED LIST
- --without-gossip
- --without-mingle
- --without-heartbeat
- --heartbeat-interval
INTEGER
- --autoscale
<MIN WORKERS>, <MAX WORKERS>
- -B, --beat
- -s, --schedule-filename,
--schedule TEXT
- --scheduler
TEXT
- -f, --logfile TEXT
- Log destination; defaults to stderr
- --pidfile
TEXT
- --uid TEXT
- --gid TEXT
- --umask TEXT
- --executable
TEXT