Documentation on how to set /tree as the default instead of /lab

[costrouc]

Servers are launched to /lab and not /tree

[costrouc]

Think this may be releated to the jupyterhub 2.0 change https://zero-to-jupyterhub.readthedocs.io/en/latest/jupyterhub/customizing/user-environment.html#selecting-a-user-interface.

[Adam-D-Lewis]

I tried setting the following in all.yaml in group_vars, but that didn't work.

jupyterhub_custom:
  Spawner:
    environment:
      JUPYTERHUB_SINGLEUSER_APP: notebook.notebookapp.NotebookApp

I confirmed it's setting the environment variables by checking the following in a terminal within the singleuser jupyterlab:

example-user@hpc02-test:~$ echo $JUPYTERHUB_SINGLEUSER_APP
notebook.notebookapp.NotebookApp

Documentation suggesting it might work
https://jupyterhub.readthedocs.io/en/stable/api/spawner.html?highlight=c.Spawner.env_keep#jupyterhub.spawner.Spawner.environment

I'll continue looking into this. I think I should be able to just set the JUPYTERHUB_SINGLEUSER_APP environment variable on the jupyterhub instance since it's already included in c.Spawner.env_keep variable

[Adam-D-Lewis]

Also tried setting the following directly in jupyterhub_config.py, but doesn't work.

# set classic notebook as default
os.environ['JUPYTERHUB_SINGLEUSER_APP']='notebook.notebookapp.NotebookApp'

example-user@hpc02-test:~$ echo $JUPYTERHUB_SINGLEUSER_APP
notebook.notebookapp.NotebookApp

[Adam-D-Lewis]

Changing c.QHubHPCSpawner.default_url = '/lab' to c.QHubHPCSpawner.default_url = '/tree' and setting

# set classic notebook as default
os.environ['JUPYTERHUB_SINGLEUSER_APP']='notebook.notebookapp.NotebookApp'

in jupyterhub_config.py seems to work. Not sure if both are necessary or just one.

[Adam-D-Lewis]

Setting the following in group_vars/all.yaml works

jupyterhub_custom:
  QHubHPCSpawner:
    default_url: '/tree'
  Spawner:
    environment:
      JUPYTERHUB_SINGLEUSER_APP: notebook.notebookapp.NotebookApp

while

jupyterhub_custom:
  QHubHPCSpawner:
    default_url: '/tree'

alone did not