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Celery Flower

.. image::

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Flower is a web based tool for monitoring and administrating Celery clusters.


  • Real-time monitoring using Celery Events

    • Task progress and history
    • Ability to show task details (arguments, start time, runtime, and more)
    • Graphs and statistics
  • Remote Control

    • View worker status and statistics
    • Shutdown and restart worker instances
    • Control worker pool size and autoscale settings
    • View and modify the queues a worker instance consumes from
    • View currently running tasks
    • View scheduled tasks (ETA/countdown)
    • View reserved and revoked tasks
    • Apply time and rate limits
    • Configuration viewer
    • Revoke or terminate tasks
  • Broker monitoring

    • View statistics for all Celery queues
    • Queue length graphs

  • Basic Auth and Google OpenID authentication


Flower API enables to manage the cluster via REST API, call tasks and
receive task events in real-time via WebSockets.

For example you can restart worker's pool by: ::

$ curl -X POST http://localhost:5555/api/worker/pool/restart/myworker

Or call a task by: ::

$ curl -X POST -d '{"args":[1,2]}' http://localhost:5555/api/task/async-apply/tasks.add

Or terminate executing task by: ::

$ curl -X POST -d 'terminate=True' http://localhost:5555/api/task/revoke/8a4da87b-e12b-4547-b89a-e92e4d1f8efd

Or receive task completion events in real-time:

.. code-block:: javascript

var ws = new WebSocket('ws://localhost:5555/api/task/events/task-succeeded/');
ws.onmessage = function (event) {

For more info checkout API Reference_ and examples_.

.. _API Reference:
.. _examples:


PyPI version: ::

$ pip install flower

Development version: ::

$ pip install


Launch the server and open http://localhost:5555: ::

$ flower --port=5555

Or launch from celery: ::

$ celery flower -A proj --address= --port=5555

Broker URL and other configuration options can be passed through the standard Celery options: ::

$ celery flower -A proj --broker=amqp://guest:guest@localhost:5672//

Or run with unix socket file: ::

$ flower --unix_socket=/tmp/flower.sock


Documentation is available at Read the Docs_ and IPython Notebook Viewer_

.. _Read the Docs:
.. _IPython Notebook Viewer:


Flower is licensed under BSD 3-Clause License. See the LICENSE file
in the top distribution directory for the full license text.

Getting help

Please head over to #celery IRC channel on or
open an issue_.

.. _open an issue:


If you'd like to contribute, simply fork the repository, commit your
changes, run the tests (tox) and send a pull request.
Make sure you add yourself to CONTRIBUTORS

If you are interested in maintaining the project please contact.

.. _the repository:

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