Multi Class Multi Instructor not giving students access to courses or exchange. Hosted on TLJH

[BradPohl]

I have an Ubuntu Server hosting The Littlest Jupyter Hub (tljh) and am trying to set up nbgrader for multiple instructors with different classes.

I have gotten the formgrader working and have been able to do a manual exchange of assignments between students and instructors. I am having issues with getting the internal exchange working between students and instructors, however. When I use the command line as student1:

nbgrader fetch_assignment ps1 --course c1

I am told "You do not have access to this course"

I have tried following the documentation here and have tried referencing the demo github here

When releasing assignments they do go into the exchange and have the proper setup.

I really have no idea what to do further or what I may have messed up along the way.

I have 2 nbgrader_config.py files and 1 jupyterhub_config.py file.
The following are my config files

~/jupyter/jupyter_config.py

c = get_config()

#formgrader
c.JupyterHub.NotebookApp.tornado_settings = {
    'headers': {
        'Content-Security-Policy': "frame-ancestors 'self'"
    }
}


# Our user list
c.Authenticator.allowed_users = [
    'jupyter-bradp',
    'jupyter-dakoop',
    'jupyter-professor1',
    'jupyter-student1',
    'jupyter-student2',
    'jupyter-student3',
]

c.Authenticator.admin_users = {
    'jupyter-bradp',
    'jupyter-dakoop',
    'jupyter-professor1',
}


# instructor1 and instructor2 have access to different shared servers:
c.JupyterHub.load_groups = {
    'instructors' = [
        'jupyter-bradp',
        'jupyter-professor1',
    ],
    'formgrade-c1': [
        'jupyter-bradp',
    ],
    'formgrade-course123':[
        'jupyter-professor1',
    ],
    'nbgrader-c1': [
            'jupyter-bradp',
            'jupyter-student1',
    ],
    'nbgrader-course123': [],
}

for course in ['c1']:
    roles.append(
            'name':f'formgrade-{course}',
            'groups':[f'formgrade-{course}'],
            'scopes':[
                f'access:services!service={course}',
            ]
        )
    #course material access
    roles.append(
        {
            'name':f'nbgrader-{course}',
            'groups':[f'nbgrader-{course}'],
            'scopes':[
                    'list:services',
                    f'read:services!service={course}',
                ],
        }
    )


# Start the notebook server as a service. The port can be whatever you want
# and the group has to match the name of the group defined above.
c.JupyterHub.services = [
    {
        'name': 'c1',
        'url': 'http://127.0.0.1:9999',
        'command': [
            'jupyterhub-singleuser',
            '--group=formgrade-c1',
            '--debug',
        ],
        'user': 'jupyter-bradp',
        'cwd': '/home/jupyter-bradp/c1',
        'api_token': token,  # include api token from admin user
    },
    {
        'name': 'course123',
        'url': 'http://127.0.0.1:9998',
        'command': [
            'jupyterhub-singleuser',
            '--group=formgrade-course123',
            '--debug',
        ],
        'user': 'grader-course123',
        'cwd': '/home/grader-course123',
        'api_token': token  # include api token from admin user
    },
]

~/jupyter/nbgrader_config.py (This is the global nbgrader config file)

from nbgrader.auth import JupyterHubAuthPlugin
c = get_config()
c.Exchange.path_includes_course = True
c.Authenticator.plugin_class = JupyterHubAuthPlugin

~/home/jupyter-bradp/c1/nbgrader_config.py

c = get_config()
c.CourseDirectory.course_id = "c1"
c.IncludeHeaderFooter.header = "source/header.ipynb"
c.Exchange.root = '/tmp/exchange'
c.NbGrader.logfile = "/home/jupyter-bradp/nbgrader.log"

[BradPohl]

I have found a fix.

The global nbgrader_config.py must be placed in:

~/jupyter/jupyter_server_config.d

[brichet]

@BradPohl from the documentation, the global config file can also be placed in a global location, which makes sense for a server installation:

On the nbgrader side of things, activating the JupyterHubAuthPlugin requires you to add it as an authentication plugin class into the nbgrader_config.py for all accounts. This is easiest to do by putting it in a global location such as /etc/jupyter/nbgrader_config.py