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Flower is a web based tool for monitoring and administrating Celery clusters. It has these 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
Basic Auth and Google OpenID authentication


run on the given address
regexp of emails to grant access
colon separated user-password to enable basic auth
inspect broker e.g. http://guest:guest@localhost:15672/api/
path to SSL certificate file
flower database file (default flower.db)
run in debug mode (default False)
show this help information
inspect workers (default True)
inspect timeout (in milliseconds) (default 1000)
path to SSL key file
maximum number of workers to keep in memory (default 5000)
maximum number of tasks to keep in memory (default 10000)
enable persistent mode (default False)
run on the given port (default 5555)
base url prefix
enable support for the 'X-Real-Ip' and 'X-Scheme' headers. (default False)

Tornado Options

max size of log files before rollover (default 100000000)
number of log files to keep (default 10)
Path prefix for log files. Note that if you are running multiple tornado processes, log_file_prefix must be different for each of them (e.g. include the port number)

Send log output to stderr (colorized if possible). By default use stderr if --log_file_prefix is not set and no other logging is configured.

Set the Python log level. If none, tornado won't touch the logging configuration. (default info)


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

$ flower -A proj --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//


Mher Movsisyan


Flower 0.9 Jul 19, 2016