Celery Received unregistered task of type run example

Question

I m trying to run example from Celery documentation   I run  celeryd --loglevel INFO   usr local lib python2 7 dist-packages celery loaders default py 64  NotConfigured  No  celeryconfig  module found  Please make sure it exists and is available to Python     is available to Python      configname       2012-03-19 04 26 34 899  WARNING MainProcess      -------------- celery ubuntu v2 5 1 ----      ----- ---          --  Configuration  --   -      ---     broker       amqp   guest localhost 5672   -    ----------     loader       celery loaders default Loader -    ----------     logfile       stderr  INFO -    ----------     concurrency  4 -    ----------     events       OFF -     ---   ---     beat         OFF --         ---- ---       -----  Queues   --------------     celery       exchange celery  direct  binding celery   tasks py     - - coding  utf-8 - - from celery task import task   task def add x  y       return x   y   run task py     - - coding  utf-8 - - from tasks import add result   add delay 4  4  print  result  print  result ready    print  result get      In same folder celeryconfig py   CELERY IMPORTS     tasks     CELERY RESULT BACKEND    amqp  BROKER URL    amqp   guest guest localhost 5672    CELERY TASK RESULT EXPIRES   300   When I run  run task py    on python console  eb503f77-b5fc-44e2-ac0b-91ce6ddbf153 False   errors on celeryd server   2012-03-19 04 34 14 913  ERROR MainProcess  Received unregistered task of type  tasks add   The message has been ignored and discarded   Did you remember to import the module containing this task  Or maybe you are using relative imports  Please see http   bit ly gLye1c for more information   The full contents of the message body was    retries   0   task    tasks add    utc   False   args    4  4    expires   None   eta   None   kwargs        id    841bc21f-8124-436b-92f1-e3b62cafdfe7    Traceback  most recent call last     File   usr local lib python2 7 dist-packages celery worker consumer py   line 444  in receive message     self strategies name  message  body  message ack log error  KeyError   tasks add    Please explain what s the problem

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Celery won t import the task if the app was to lack some of its dependencies  For instance  an app view imports numpy without it being installed  Best way to check for this is to try to run your django server  as you probably know   python manage py runserver   You have found the problem if this raises ImportErrors within the app that has houses the respective task  Just pip install everything  or try to remove the dependencies and try again  This isn t the cause of your issue otherwise

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app   Celery   name    broker app config  CELERY BROKER     backend app config  CELERY BACKEND    include   util xxxx    util yyyy

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If you use autodiscover tasks  make sure that your functions to be registered stay in the tasks py  not any other file  Or celery can not find the functions you want to register   Use app register task will also do the job  but seems a little naive   Please refer to this official specification of autodiscover tasks   def autodiscover tasks self  packages None  related name  tasks   force False          Auto-discover task modules       Searches a list of packages for a  tasks py  module  or use     related name argument        If the name is empty  this will be delegated to fix-ups  e g   Django        For example if you have a directory layout like this          code-block   text          foo   init   py            tasks py            models py          bar   init   py             tasks py             models py          baz   init   py             models py      Then calling   app autodiscover tasks   foo   bar    baz      will     result in the modules   foo tasks   and   bar tasks   being imported       Arguments          packages  List str    List of packages to search              This argument may also be a callable  in which case the             value returned is used  for lazy evaluation           related name  str   The name of the module to find   Defaults             to  tasks   meaning  look for  module tasks  for every             module in   packages             force  bool   By default this call is lazy so that the actual             auto-discovery won t happen until an application imports             the default modules   Forcing will cause the auto-discovery             to happen immediately

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You can see the current list of registered tasks in the celery registry TaskRegistry class  Could be that your celeryconfig  in the current directory  is not in PYTHONPATH so celery can t find it and falls back to defaults  Simply specify it explicitly when starting celery   celeryd --loglevel INFO --settings celeryconfig   You can also set --loglevel DEBUG and you should probably see the problem immediately

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This  strangely  can also be because of a missing package  Run pip to install all necessary packages  pip install -r requirements txt   autodiscover tasks wasn t picking up tasks that used missing packages

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Try importing the Celery task in a Python Shell - Celery might silently be failing to register your tasks because of a bad import statement  I had an ImportError exception in my tasks py file that was causing Celery to not register the tasks in the module  All other module tasks were registered correctly  This error wasn t evident until I tried importing the Celery task within a Python Shell  I fixed the bad import statement and then the tasks were successfully registered

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Write the correct path to the file tasks  app conf beat schedule      send-task          task    appdir tasks testapp        schedule   crontab minute    5

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did you include your tasks py file or wherever your async methods are stored  app   Celery  APP NAME   broker  redis   redis 6379 0   include   app1 tasks    app2 tasks

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when running the celery with  celery -A conf worker  -l info  command all the tasks got listed in log like i was having    conf celery debug task  i was getting the error because I was not giving this exact task path  So kindly recheck this by copying and pasting exact task id

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Just to add my two cents for my case with this error     My path is  vagrant devops test with app py and   init   py in it   When I run cd  vagrant devops   amp  amp  celery worker -A test app celery --loglevel info I am getting this error   But when I run it like cd  vagrant devops test  amp  amp  celery worker -A app celery --loglevel info everything is OK

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I had this problem mysteriously crop up when I added some signal handling to my django app   In doing so I converted the app to use an AppConfig  meaning that instead of simply reading as  booking  in INSTALLED APPS  it read  booking app BookingConfig    Celery doesn t understand what that means  so I added  INSTALLED APPS WITH APPCONFIGS     booking    to my django settings  and modified my celery py from  app autodiscover tasks lambda  settings INSTALLED APPS    to  app autodiscover tasks      lambda  settings INSTALLED APPS   settings INSTALLED APPS WITH APPCONFIGS

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I also had the same problem  I added   CELERY IMPORTS   mytasks     in my celeryconfig py file to solve it

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If you are using the apps config in installed apps like this   LOCAL APPS      apps myapp apps MyAppConfig     Then in your config app  import the task in ready method like this   from django apps import AppConfig  class MyAppConfig AppConfig       name    apps myapp       def ready self           try              import apps myapp signals    noqa F401             import apps myapp tasks         except ImportError              pass

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I think you need to restart the worker server  I meet the same problem and solve it by restarting

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I ve found that one of our programmers added the following line to one of the imports   os chdir  lt path to a local folder gt     This caused the Celery worker to change its working directory from the projects  default working directory  where it could find the tasks  to a different directory  where it couldn t find the tasks    After removing this line of code  all tasks were found and registered

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Whether you use CELERY IMPORTS or autodiscover tasks  the important point is the tasks are able to be found and the name of the tasks registered in Celery should match the names the workers try to fetch   When you launch the Celery  say celery worker -A project --loglevel DEBUG  you should see the name of the tasks  For example  if I have a debug task task in my celery py    tasks    project celery debug task   celery backend cleanup   celery chain   celery chord   celery chord unlock   celery chunks   celery group   celery map   celery starmap   If you can t see your tasks in the list  please check your celery configuration imports the tasks correctly  either in --setting  --config  celeryconfig or config from object    If you are using celery beat  make sure the task name  task  you use in CELERYBEAT SCHEDULE matches the name in the celery task list

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As some other answers have already pointed out  there are many reasons why celery would silently ignore tasks  including dependency issues but also any syntax or code problem   One quick way to find them is to run     manage py check   Many times  after fixing the errors that are reported  the tasks are recognized by celery

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I had the issue with PeriodicTask classes in django-celery  while their names showed up fine when starting the celery worker every execution triggered   KeyError  u my app tasks run   My task was a class named  CleanUp   not just a method called  run    When I checked table  djcelery periodictask  I saw outdated entries and deleting them fixed the issue

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In my case the error was because one container created files in a folder that were mounted on the host file-system with docker-compose   I just had to do remove the files created by the container on the host system and I was able to launch my project again      sudo rm -Rf foldername    I had to use sudo because the files were owned by the root user   Docker version  18 03 1

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I did not have any issue with Django  But encountered this when I was using Flask  The solution was setting the config option   celery worker -A app celery --loglevel DEBUG --config settings  while with Django  I just had   python manage py celery worker -c 2 --loglevel info

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The answer to your problem lies in THE FIRST LINE of the output you provided in your question   usr local lib python2 7 dist-packages celery loaders default py 64  NotConfigured  No  celeryconfig  module found  Please make sure it exists and is available to Python     is available to Python      configname       Without the right configuration Celery is not able to do anything   Reason why it can t find the celeryconfig is most likely it is not in your PYTHONPATH

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I had the same problem running tasks from Celery Beat  Celery doesn t like relative imports so in my celeryconfig py  I had to explicitly set the full package name   app conf beat schedule         add-every-30-seconds              task    full path to add            schedule   30 0           args    16  16

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If you are running into this kind of error  there are a number of possible causes but the solution I found was that my celeryd config file in  etc defaults celeryd was configured for standard use  not for my specific django project  As soon as I converted it to the format specified in the celery docs  all was well

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Celery doesn t support relative imports so in my celeryconfig py  you need absolute import   CELERYBEAT SCHEDULE              add num                  task    app tasks add num add nums                schedule   timedelta seconds 10                args    1  2

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I had the same problem  The reason of  Received unregistered task of type    was that celeryd service didn t find and register the tasks on service start  btw their list is visible when you start    manage py celeryd --loglevel info     These tasks should be declared in CELERY IMPORTS     tasks     in settings file  If you have a special celery settings py file it has to be declared on celeryd service start as --settings celery settings py as digivampire wrote

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I have solved my problem  my  task  is under a python package named  celery task  when i quit this package and run the command celery worker -A celery task task --loglevel info  It works

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My 2 cents  I was getting this in a docker image using alpine  The django settings referenced  dev log for logging to syslog  The django app and celery worker were both based on the same image  The entrypoint of the django app image was launching syslogd on start  but the one for the celery worker was not  This was causing things like   manage py shell to fail because there wouldn t be any  dev log  The celery worker was not failing  Instead  it was silently just ignoring the rest of the app launch  which included loading shared task entries from applications in the django project

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Using --settings did not work for me  I had to use the following to get it all to work   celery --config celeryconfig --loglevel INFO   Here is the celeryconfig file that has the CELERY IMPORTS added     Celery configuration file BROKER URL    amqp     CELERY RESULT BACKEND    amqp      CELERY TASK SERIALIZER    json  CELERY RESULT SERIALIZER    json  CELERY TIMEZONE    America Los Angeles  CELERY ENABLE UTC   True  CELERY IMPORTS     tasks      My setup was a little bit more tricky because I m using supervisor to launch celery as a daemon

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I encountered this problem as well  but it is not quite the same  so just FYI   Recent upgrades causes this error message due to this decorator syntax   ERROR MainProcess  Received unregistered task of type  my server check     task  my server check    Had to be change to just   task    No clue why

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An additional item to a really useful list   I have found Celery unforgiving in relation to errors in tasks  or at least I haven t been able to trace the appropriate log entries  and it doesn t register them   I have had a number of issues with running Celery as a service  which have been predominantly permissions related   The latest related to permissions writing to a log file   I had no issues in development or running celery at the command line  but the service reported the task as unregistered    I needed to change the log folder permissions to enable the service to write to it

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What worked for me  was to add explicit name to celery task decorator  I changed my task declaration from  app tasks to  app tasks name  module submodule task    Here is an example    test task py  celery task def test task        print  Celery Task            test task py  celery task name  tasks test test task   def test task        print  Celery Task

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The solution for me to add this line to  etc default celeryd  CELERYD OPTS  -A tasks    Because when I run these commands    celery worker --loglevel INFO celery worker -A tasks --loglevel INFO   Only the latter command was showing task names at all    I have also tried adding CELERY APP line  etc default celeryd but that didn t worked either   CELERY APP  tasks

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This solved my issue  put it inside your create app   function   celery conf update app config   class ContextTask celery Task       def   call   self   args    kwargs           with app app context                return self run  args    kwargs   celery Task   ContextTask

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app   Celery  proj                broker  amqp                   backend  amqp                   include   proj tasks      please include   proj tasks   You need go to the top dir  then exec this  celery -A app celery module celeryapp worker --loglevel info   not   celery -A celeryapp worker --loglevel info   in your celeryconfig py input imports     path ptah tasks     please in other module invoke task

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For me this error was solved by ensuring the app containing the tasks was included under django s INSTALLED APPS setting

[python] Celery Received unregistered task of type (run example)

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