Notebook spinning on subfolders on jupyterhub (and link not authorized)

[sylvaticus]

Hello, I am trying to run the collaboration extension (pip3 install jupyter-collaboration) on a newly set up JupyterLab in Jupyterhub in ubuntu 22.04 installed using PIP (i.e. pip3 install jupyter jupyterhub jupyterlab notebook).

I have somehow once managed to get the collaboration feature working after resetting the server several times, but in general I have the issue that:

1. notebooks in subfolders spin empty without loading (on the luncher I have RPC: [subfolder])
2. For notebooks on the home folder, if I click on the share icon and get the link, the other user result not authorized

How can I debug it better to know what's wrong with my installation (removing the extension everything works correctly) ?

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[davidbrochart]

1. notebooks in subfolders spin empty without loading (on the luncher I have RPC: [subfolder])

You can try deleting the .jupyter_ystore.db file, but it's not a good sign.

2. For notebooks on the home folder, if I click on the share icon and get the link, the other user result not authorized

Maybe the user is indeed not authenticated/authorized. I don't know exactly how JupyterHub works, but in JupyterLab if you want to open a new window that doesn't share cookies with the other one, you would need to pass e.g. a token in the URL.

[sylvaticus]

Maybe the user is indeed not authenticated/authorized. I don't know exactly how JupyterHub works, but in JupyterLab if you want to open a new window that doesn't share cookies with the other one, you would need to pass e.g. a token in the URL.

Yes, there is an option to add the token, I have tried that one too, but still user2 is not authorized on user1 notebook..
I will reinstall the extension and try deleting the .jupyter_ystore.db file.

[sylvaticus]

Ok, at least now I can reproduce the only case that works: a normal user is sharing the url of a notebook on its folder with an "admin" user that can then coedit the file.

So it seems it is a problem of permissions. Rather than authorize everyone to collaborate or hardcode the per-project permissions in a configuration file, would it be possible to delegate permissions from the filesystem (i.e. if user1 has write permission on the file of notebook of user1, he can access its notebook) ?

I still have the issue that with the jupyter-collaboration extension only notebook in the main user folder are loaded, not in any other subfolder (even erasing the .jupyter_ystore.db file and restarting jupyterhub)

A more theoretical question: what is the difference between the collaboration architecture described here and those described here ?

[davidbrochart]

A more theoretical question: what is the difference between the collaboration architecture described here and those described here ?

The former uses the latter, giving users permissions to e.g. execute a notebook or not, but I don't know JupyterHub well.