How to install nbgrader when using jupyterhub with DockerSpawner?

[ovasty]

Operating system

CentOS 7.9

nbgrader --version

0.9.2

jupyterhub --version (if used with JupyterHub)

5.0.0

jupyter notebook --version

7.2.0

Expected behavior

Install nbgrader for JupyterHub with DockerSpawner (Docker image is JupyterLab)

Actual behavior

Don't know how to install it.

1. Under Jupyterhub server, what should be installed?
2. In the JupyterLab image, what should be installed?
3. How to config nbgrader for the two environments?

Steps to reproduce the behavior

[shreve]

1. Your JupyterHub server doesn't need nbgrader. It will likely need some config to make sure that it launches Jupyter singleuser servers have access to the exchange directory.
2. Your JupyterLab (singleuser) server will need the nbgrader package (e.g. pip install nbgrader) and access to the exchange directory.
3. Both servers will need an nbgrader_config.py file with appropriate config based on your setup.

Here are some docs you'll hopefully find helpful:

• The philosophy and the approach
• Exchanging assignment files
• Using nbgrader with JupyterHub

[flyforfreedom]

I hava a similar setup and that also confused me a lot, thanks @shreve for clarification. But I am still not clear about "Both servers will need an nbgrader_config.py file". Who will read nbgrader_config.py file if I didn't install nbgrader in Jupyterhub docker images? In my case I try to install ngshare in Jupyterhub container, ngshare_exchange and nbgrader in JupyterLab based images, but when I fetch course from Jupyterlab menu, logs showed: Formgrader not available at URL: https://hub.***.***/service.

[perllaghu]

But I am still not clear about "Both servers will need an nbgrader_config.py file". Who will read nbgrader_config.py file if I didn't install nbgrader in Jupyterhub docker images?

[side-note: I find it confusing when people mix up jupyterhub and jupyterlab [aka jupyter notebook]

Each notebook-server docker image [the thing that provides the jupyter UI for the user to interact with] will need to have nbgrader installed & configured. There will be some configuration involved to tell the nbgrader how to exchange files [be it volume mounts, ngshare, or nbexchange]

Depending on how jupyterhub/dockerspawner configures and launches notebook-server docker images, there may well be a base configuration [baked into the image] and a dynamic one [added at launch time]

In the case of ngshare, it also requires jupyterhub to be configured to interact with ngshare