Connection refused for Redis on Heroku

Question

I'm trying to set up Redis on Heroku as a backend for Celery. I have it working locally but on Heroku, I get this error (after the celery task completes): ConnectionError: Error 111 connecting localhost:6379. Connection refused.

From what I can tell from other answers, that would indicate that the redis server isn't online, though the REDISTOGO_URL seems to be configured properly.

In settings.py:

REDIS_URL = os.getenv('REDISTOGO_URL', 'redis://localhost:6379/0')

In tasks.py:

from celery import Celery
celery = Celery('tasks', backend=settings.CELERY_RESULT_BACKEND, broker=settings.REDIS_URL)

Versions:

celery==3.0.5
celery-with-redis==3.0
django-celery==3.0.4
kombu==2.3.2
redis==2.6.0

Dmitry Shevchenko · Accepted Answer · 2012-08-05 03:13:56Z

2

Looks like you're not using REDISTOGO_URL, since the error message states localhost

Try to check:

heroku config, just to check that REDISTOGO_URL is set in config
Go to shell on heroku (like this) and see if python gets url correctly

Do you run celery on the same app, if not check that other server's config.

edited Aug 5, 2012 at 3:13

answered Aug 5, 2012 at 2:20

Dmitry Shevchenko

32.5k10 gold badges60 silver badges63 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Mike Over a year ago

That was my thought too - how can I check what it's using?

Mike Over a year ago

REDISTOGO_URL is set correctly in the config. And Python is pulling it in as well (if I import settings.REDIS_URL, it matches the Heroku config). Celery is in the same app.

Mike Over a year ago

Looking through my logs, it looks like Celery is reporting the correct broker (that same REDISTOGO_URL) in its configuration.

Dmitry Shevchenko Over a year ago

It's hard to tell from here. I would try to setup Celery according to their django documentation, put broker into settings.py and see if that helps.

Mike · Accepted Answer · 2012-08-05 20:22:22Z

1

Found the problem. I had the celery backend configured to the string 'redis' rather than the REDIS_URL.

What I had:

CELERY_RESULT_BACKEND = 'redis'

What it should be:

CELERY_RESULT_BACKEND = REDIS_URL

Dmitry - appreciate your help.

answered Aug 5, 2012 at 20:22

Mike

3811 gold badge6 silver badges13 bronze badges

Collectives™ on Stack Overflow

Connection refused for Redis on Heroku

2 Answers 2

4 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

4 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related