Embedded server in Jupyter notebook with port forwarding

I’m trying to embed my bokeh app in a Jupyter notebook. The following example works fine when Jupyter is running on my local machine (Mac laptop) …

But I typically run Jupyter on another machine (linux desktop) and connect via port forwarding …
ssh -NL 8889:localhost:8889 alan@192.168.1.199

When I try to run the notebook_embed.ipynb example on my desktop via my laptop, the output doesn’t render. I tried changing the notebook_url argument to the local address and get the following

Screen Shot 2024-12-24 at 10.07.24 AM1934×238 47.2 KB

It’s not clear to me that it will be possible to open a websocket through an SSH tunnel, in general. But I don’t use SSH tunnels regularly, so perhaps they are more capable than I am aware of. Nevertheless, a first action to try is the one given in the error message: setting the environment variable as described, on whatever machine is actually running the notebook kernel.

Thanks! Setting the environment variable didn’t seem to change anything, including the error message. I think for now I can develop my app on my laptop but when I’m ready to use it I can just run a bokeh server on my desktop.

Just to be clear you set the env variable before running the jupyter notebook process? If so I’d probably still expect things to fail, but for a different reason (the websocket fails to connect, and no longer that it is rejected).

oh, it worked! so the answer was to follow the error message , but thanks for your help!

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