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Alx Ki
Python Web Development Techdegree Graduate 14,822 PointsDeploying asgi alongside wsgi on Heroku
Hi, Kenneth Love !
Unfortunately, the docs dont cover this topic enough for me to understand.
I want to deploy a project with Channels, working only with one model. So it seems like I need to setup two web dynos for Heroku. One regular, and one with Daphne. Right?
Procfile:
web: gunicorn --pythonpath social-team-builder social_team_builder.deploy --log-file -
web2: daphne social_team_builder.asgi:channel_layer --port $PORT --bind 0.0.0.0 -v2
worker: python manage.py runworker -v2
deploy.py:
import os
from whitenoise.django import DjangoWhiteNoise
from django.core.wsgi import get_wsgi_application
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "social_team_builder.deploy_settings")
application = get_wsgi_application()
application = DjangoWhiteNoise(application)
asgi.py:
import os
from channels.asgi import get_channel_layer
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "social_team_builder.deploy_settings")
channel_layer = get_channel_layer()
After installing Heroku Redis in heroku dashboard REDIS_URL appeared in dashboard/settings/config vars. I used it in settings.py:
CHANNEL_LAYERS = {
'default': {
'BACKEND': 'asgi_redis.RedisChannelLayer',
'CONFIG': {
'hosts': [('redis://h:p2e6672095a593aa48b89635437f7ff478cea12cbd6996b45b33cf84ea418d6d0@ec2-34-249-251-118.eu-west-1.compute.amazonaws.com', 25199)],
},
'ROUTING': 'blog_channels.routing.channel_routing',
},
}
Am I on the right way? I can not run three Dynos for free, so I want to check everything twice. Would appreciate any help.
1 Answer
Kenneth Love
Treehouse Guest TeacherYou shouldn't need three dynos. It should be two: one for web and one for Daphne (you could run all of the site through Daphne, IIRC, but it might have some processing bottlenecks). Heroku Redis is a service like Heroku Postgres and doesn't count as a dyno.
Alx Ki
Python Web Development Techdegree Graduate 14,822 PointsAlx Ki
Python Web Development Techdegree Graduate 14,822 PointsThey count my 'worker: python manage.py runworker -v2' as a dyno.