JupyterHub with JupyterLab 3.X getting 404

JupyterHub
1

Hi folks,

Not sure if this belongs on the jupyterhub github issues, but I’ll start here because according to PRs and issues it should be fixed already. I must be missing something because I have not had success.

With:
c.Spawner.cmd = [‘jupyterhub-singleuser’]
JupyterLab launches, but as expected, without the hub menu items, so can’t shutdown the notebook server.

With:
c.Spawner.cmd = [‘jupyter-labhub’]
I get 404.

By my understanding this should be fixed with:

So, I was wondering if anyone has had success?

Many thanks
Tim
(JupyterHub 1.3, but I also tried with 1.1 and had same results)

2

To help narrow down the problem could you check whether the menu items appear in the Notebook app (/tree instead of /lab)?

3

Hi,
/lab does not actually appear in the URL, but appending /tree or anything else always gives 404.
Another user sees the same behaviour in Jupyter lab 3.0.1 and jupyterhub · Issue #9558 · jupyterlab/jupyterlab · GitHub
I am using subdomains by the way, not sure if that is relevant.

4

It looks like there was an additional fix needed: Refactor labhub + CI by afshin · Pull Request #9604 · jupyterlab/jupyterlab · GitHub

This fix has been merged into master, but not yet released.

With this fix, running jupyter-labhub should just work.

2 Likes
5

Awesome, confirmed as working with master. One thing still to clarify - the url when using lab is /lab/tree/Notebook.ipynb. Shouldn’t it be just /lab (and just /tree for classic notebook)?

1 Like