2 years ago
I have a revers proxy through Caddy, that is connecting my frontend and backend. It seems to be working fine for my frontend. But is failing on the backend. The backend is a django service.
The proxy is defined by
# Proxy file for connecting services through railway.app
{
debug
admin off # theres no need for the admin api in railway's environment
persist_config off # storage isn't persistent anyway
auto_https off # railway handles https for us, this could in some cases cause issues if left enabled
log {
format json # set runtime log format to json mode
}
# server options
servers {
trusted_proxies static private_ranges # trust railway's proxy
}
}
:{$PORT} {
log {
format json # set access log format to json mode
}
encode zstd gzip
handle_path /ingest* {
rewrite * {path}
reverse_proxy https://us.i.posthog.com:443 {
header_up Host us.i.posthog.com
header_down -Access-Control-Allow-Origin
}
}
@django path /admin* /api* /accounts* /static/*
handle @django {
reverse_proxy {$BACKEND_HOST}
}
handle {
reverse_proxy {$FRONTEND_HOST}
}
}I am not getting any responses from django. But I am hitting it. I see some network activity. But no response
I put the service in debug mode, but yet, it still is not responding with anything. I am getting 502 errors.
The django service is being ran with python [manage.py](manage.py) runserver 0.0.0.0:${PORT:-8000}.
Unsure what to do / change to get this running
46 Replies
There are no real logs from django (normally it would respond with what endpoints are hit in debug mode)
My env for the reverse proxy:
BACKEND_HOST=${{Django.RAILWAY_PRIVATE_DOMAIN}}:${{Django.PORT}}
FRONTEND_HOST=${{Frontend.RAILWAY_PRIVATE_DOMAIN}}:${{Frontend.PORT}}
PORT=3000
2 years ago
runserver starts a development server, even if you are only testing you still dont want to be using it on Railway, instead use gunicorn like this gunicorn mysite.wsgi -b [::]:$PORT (replacing mysite with the name of the folder that contains wsgi.py)
I was originally doing gunicorn BBWare.wsgi -b [::]:${PORT:-8000} but was still getting the same issue. But yea, let me try with that but debug still on (I have my deployment select between the two based on if debug is on)
2 years ago
little context, the private network is ipv6 only so your app would need to listen on ipv6
For the run server, yea, I guess it wouldn't be. But the gunicorn should be correct for doing that? Unless there is an extra setting I need to change in the django settings?
2 years ago
what you have should have worked, maybe you are overwriting the start command somewhere else
Also, can confirm, just having the gunicorn config file in existence does make it get used. Even if the cli isn't pointing to it. 😄
Going to see though real quick if the gunicorn + debug produces anything
2 years ago
just set the workers to a fixed number
2 years ago
show me the depoloy logs for your django app please
You reached the start of the range → Jun 14, 2024 1:45 PM
Starting Container
+ python manage.py migrate --noinput
Apply all migrations: account, admin, auth, authtoken, breaker, contenttypes, permissions, purchase, sale, sessions, sites, socialaccount, stock
+
python manage.py collectstatic --noinput
+ gunicorn BBWare.wsgi -b [::]:3000
[2024-06-14 17:46:54 +0000] [30] [INFO] Starting gunicorn 22.0.0
[2024-06-14 17:46:54 +0000] [30] [INFO] Listening at: http://[::]:3000 (30)
[2024-06-14 17:46:54 +0000] [30] [INFO] Using worker: sync
[2024-06-14 17:46:54 +0000] [31] [INFO] Booting worker with pid: 312 years ago
can you send the link to the proxy
2 years ago
looks like it does make it to the django backend
You can see the pure frontend working if you go to https://website-reverse-proxy-production.up.railway.app/sign-in
Works for me. 500s becuase can't hit the auth endpoint becuase backend isn't working.
2 years ago
can you add --forwarded-allow-ips="*" to your gunicorn start command
Well the "good" news is that the requests are now responding with 301 and not 502. But not actually sure if that is better.
It is redirecting to nothing? Not sure.
2 years ago
django and or gunicorn is attempting to redirect for some reason, do you have any idea why?
The only thing I could think of is that I force things to be HTTPS:
SECURE_PROXY_SSL_HEADER = ("HTTP_X_FORWARDED_PROTO", "https")
SECURE_SSL_REDIRECT = True
SESSION_COOKIE_SECURE = True
CSRF_COOKIE_SECURE = TrueThis would normally work no issue. At least it has with Caddy. But maybe becuase these Caddyfiles have https off, it is messing with things? Idk how railway is taking care of https?
2 years ago
yeah dont do that
2 years ago
railway does https on its own proxy for you, you should run your app in http with no notion of https
What part should I be getting rid of?
But also, there really should be a way to make this work without removing that stuff
2 years ago
well railway sets a X-Forwarded-Proto header, so you need to have your app accept that value
2 years ago
your app on railway can only ever be accessed over https so theres no issues removing them
2 years ago
i promise you its not needed, there is no way to access a railway hosted app over http
This is going to make for quite the blog post. Eventually. Long list of backlog things to get to before I touch this.
2 years ago
well you have two options
railway sets a
X-Forwarded-Protoheader, have your app accept that valueremove anything that tries to redirect to https
I officially can transfer everything to railway.
….
That is going to be a bit of a pain. But it being possible is the first step. Now I just need to also do all the other silly things like add monitoring and add db backup cron stuff. That will be fun
2 years ago
use the railway template for db backups!
2 years ago
no problem!