# Pass a parameter to jupyterlab

**URL:** <https://discourse.jupyter.org/t/pass-a-parameter-to-jupyterlab/11922>\
**Category:** JupyterHub\
**Created:** [November 29, 2021, 7:40am UTC](https://discourse.jupyter.org/t/pass-a-parameter-to-jupyterlab/11922 "2021-11-29T07:40:34Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![fomightez](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/fomightez/32/495_2.png) [@fomightez](https://discourse.jupyter.org/u/fomightez)\
**Post date:** [November 29, 2021, 4:18pm UTC](https://discourse.jupyter.org/t/pass-a-parameter-to-jupyterlab/11922/2 "2021-11-29T16:18:52Z")

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Sorry, searching with my recommended improved topic title for you post (see end of this), brought me to [here](https://discourse.jupyter.org/t/jupyterhub-collaboration-and-tags/11259) that looks to suggest this direction:

I use jupyterhub with kubespawner in collaborative mode by adding  
a `jupyter_lab_config.py` file with `c.LabApp.collaborative = True` .

And back in July supposedly it wasn’t possible, see [here](https://discourse.jupyter.org/t/plans-on-bringing-rtc-to-jupyterhub/9813/3), but the proposed path looks similar to that. So I’m not sure it is 100% ready?

* * *

Also seen and related:  
`{"LabApp": {"collaborative": true}}` in `jupyter_server_config.json` a possbility, see [here](https://discourse.jupyter.org/t/what-is-installed-by-default-with-binder/10217/2)?

> [@What is installed by default with Binder?](https://discourse.jupyter.org/t/what-is-installed-by-default-with-binder/10217/2):
>
> in `jupyter_config.json` specify `{"LabApp": {"collaborative": true}}`
> 
> - using this file (instead of `jupyter_notebook_config.json` and/or `jupyter_server_config.json` ) avoids having to think _too_ much about launching `jupyter notebook` (the default) vs `jupyter lab` or `jupyter server`

A BinderHub is a specialized JupyterHub and so I think the way should be related.

* * *

Also you may want to edit your topic to be more specific, such as ‘Trigger JupyterLab collaborative mode on JupyterHub’ as your issue is more specialized than the title reflects.

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_[View the full topic](https://discourse.jupyter.org/t/pass-a-parameter-to-jupyterlab/11922)._