raise ConnectionError(self._error_message(e)) kombu.exceptions.OperationalError: Error 111 connecting to localhost:6379. Connection refused

问题

minimal django/celery/redis is running locally, but when deployed to heroku gives me the following error, when I run on python:

 raise ConnectionError(self._error_message(e))
 kombu.exceptions.OperationalError: Error 111 connecting to localhost:6379. Connection     
 refused.

This is my tasks.py file in my application directory:

   from celery import Celery
   import os

   app = Celery('tasks', broker='redis://localhost:6379/0')

   app.conf.update(BROKER_URL=os.environ['REDIS_URL'],
            CELERY_RESULT_BACKEND=os.environ['REDIS_URL'])

   @app.task
   def add(x, y):
      return x + y

Requirements.txt:

  django
  gunicorn
  django-heroku
  celery
  redis
  celery-with-redis
  django-celery
  kombu

I have set worker dyno to 1. Funny things is i could have sworn it was working before, now it doesnt work for some reason.

回答1:

Once, you have a minimal django-celery-redis project setup on local, here is how you deploy it on heroku:

Add to your tasks.py:

 import os

 app.conf.update(BROKER_URL=os.environ['REDIS_URL'],
    CELERY_RESULT_BACKEND=os.environ['REDIS_URL'])

Make sure your requirements.txt is like this:

 django
 gunicorn
 django-heroku
 celery
 redis

Add to your Procfile: "worker: celery worker --app=hello.tasks.app"
Make sure it still runs on local
enter into terminal: "export REDIS_URL=redis://"
run "heroku local&"

run python

 import hello.tasks
 hello.tasks.add.delay(1,2)

Should return something like:

    <AsyncResult: e1debb39-b61c-47bc-bda3-ee037d34a6c4>

"heroku apps:create minimal-django-celery-redis"
"heroku addons:create heroku-redis -a minimal-django-celery-redis"
"git add ."
"git commit -m "Demo""
"git push heroku master"
"heroku open&"
"heroku ps:scale worker=1"

"heroku run python"

  import hello.tasks
  hello.tasks.add.delay(1, 2)

You should see the task running in the application logs: "heroku logs -t -p worker"

来源：https://stackoverflow.com/questions/58901925/raise-connectionerrorself-error-messagee-kombu-exceptions-operationalerror

标签

django

heroku

Redis

celery