Flower

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

Features

• 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

• HTTP API

• Basic Auth, Google, Github, Gitlab and Okta OAuth

• Prometheus integration

Installation

PyPI version: ::

$ pip install flower

Development version: ::

$ pip install https://github.com/mher/flower/zipball/master

Usage

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

$ flower --port=5555

Launch from celery: ::

$ celery flower -A proj --address=127.0.0.1 --port=5555

Launch using docker: ::

$ docker run -p 5555:5555 mher/flower

Launch with unix socket file: ::

$ flower --unix-socket=/tmp/flower.sock

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

$ celery flower -A proj --broker=amqp://guest:[email protected]:5672//

API

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: ::

var ws = new WebSocket("ws://localhost:5555/api/task/events/task-succeeded/");
ws.onmessage = function (event) {
    console.log(event.data);
}

For more info checkout API Reference_ and examples_.

.. _API Reference: https://flower.readthedocs.io/en/latest/api.html .. _examples: http://nbviewer.ipython.org/urls/raw.github.com/mher/flower/master/docs/api.ipynb

Documentation

Documentation is available at Read the Docs_ and IPython Notebook Viewer_

.. _Read the Docs: https://flower.readthedocs.io .. _IPython Notebook Viewer: http://nbviewer.ipython.org/urls/raw.github.com/mher/flower/master/docs/api.ipynb

License

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