404 page not found

[Hanuth]

I have tried to implement this setup.
But when I start the environment, I always get "404 page not found" when I try to reach jupyterhub. Both containers, trafik and jupyterhub are running though. It seems like traefik is not recognizing the jupyterhub container.

Do you have any suggestions?

[defeo]

Did you mount the docker socket properly, here:

jupyterhub-docker/docker-compose.yml

Line 38 in 5bf2ab2

- /var/run/docker.sock:/var/run/docker.sock

The path may be dependent on your local docker installation.

[defeo]

If you go to the traefik dashboard, you want to see something like this in the "Backends":

which shows that Traefik has detected the Jupyterhub container. If the lables are set properly, something like this should show up in the "Frontends":

[dccannon]

I was able to solve this issue on my localhost by setting HOST (in .env) to 127.0.0.1, and then navigating in my browser to http://127.0.0.1. When visiting http://localhost, I see this 404 message again, but it works fine if I visit http://127.0.0.1.

Unfortunately, however, when I deployed this up to an EC2 instance, I'm now encountering this issue again, and I cannot seem to find anyway around it. I've set HOST to my domain name, and also tried setting it to the IP of the server, to localhost, to 127.0.0.1 -- nothing seems to work.

I also can't, for the life of me, access the traefik dashboard on the EC2 instance. On my localhost, I just visit http://127.0.0.1:8080 in a browser. However, on the EC2 instance -- by which I mean, even if I ssh into the server and run wget 127.0.0.1:8080 -- I just get a read error / connection reset by peer. I even tried tunneling that port onto my localhost just to be sure, and same issue.

Any thoughts on possible debugging steps?

[dccannon]

I got to the bottom of it! When running docker-compose on a remote host (with docker-compose -H "user@host"), it was unable to find the traefik config. Solved by copying the config onto the remote host at /etc/traefik and then updating docker-compose.yml:

-      - ./reverse-proxy/traefik.toml:/etc/traefik/traefik.toml
+      - /etc/traefik/traefik.toml:/etc/traefik/traefik.toml