jupyter lab build ==4.2.0 unable to get issuer certificate

[mouatez25]

i'm not able to rebuild jupyterlab.

os : redhat
node : v20.11.1
npm : 10.7.0

YN0001: │ RequestError: unable to get issuer certificate
at ClientRequest. (/openprog/VirtualPython/lib/python3.11/site-packages/jupyterlab/staging/yarn.js:195:14340)
at Object.onceWrapper (node:events:633:26)
at ClientRequest.emit (node:events:530:35)
at o.emit (/openprog/VirtualPython/lib/python3.11/site-packages/jupyterlab/staging/yarn.js:190:90286)
at TLSSocket.socketErrorListener (node:_http_client:495:9)
at TLSSocket.emit (node:events:518:28)
at emitErrorNT (node:internal/streams/destroy:169:8)
at emitErrorCloseNT (node:internal/streams/destroy:128:3)
at process.processTicksAndRejections (node:internal/process/task_queues:82:21)
at TLSSocket.onConnectSecure (node:_tls_wrap:1674:34)
at TLSSocket.emit (node:events:518:28)
at TLSSocket._finishInit (node:_tls_wrap:1085:8)
at ssl.onhandshakedone (node:_tls_wrap:871:12)

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[Michał Krassowski]

1. Why are you rebuilding JupyterLab?
2. How are you rebuilding JupyterLab?
3. Do you have HTTP(S) proxy setup?

[mouatez25]

1 - after installing for exemple some labextension such as the scheduler..... you may think it's related with those labextensions but not , even having only jupyterlab installed on the virtual env i could not run jupyter lab build so it's probably not related with labextension.

2- jupyter lab build
3- we don't

thank you so much for your quick reply .

[Michał Krassowski]

1. In JupyterLab 3+ you should not need to rebuild JupyterLab after installing an extension and you should not use jupyter labextension install which is deprecated for installing extensions since JupyterLab 4. Instead you should install extensions using pip install or conda install. If you mean https://github.com/jupyter-server/jupyter-scheduler, please note that it lists pip install jupyter_scheduler in installation instructions.

[mouatez25]

we use jupyterlab-scheduler which is cron based.
https://pypi.org/project/jupyterlab-scheduler/

i'm trying to upgrade jupyterlab from 3.6.4 to 4.2.0 which means soof the extension are already installed with jupyter labextension install.

so even jupyter server extension enable --user --py jupyter_scheduler does not resolve my issue

is there any cron scheduler similar to jupyterlab-scheduler ?

thanks

[mouatez25]

difference between https://github.com/jupyter-server/jupyter-scheduler, and https://pypi.org/project/jupyterlab-scheduler/ is that jupyter-scheduler depends on your jupyterlab session it does not run in the background , but jupyterlab-scheduler does uisng papermill or nbconvert , so even if a user end or logout from his session his jobs/notebooks will run as expected .

that's why I'm looking for anything similar to it ?

[Michał Krassowski]

It is not clear to me if the extension you are trying to use even works with JupyterLab 4.x as per tiburon-security/jupyterlab_scheduler#25

jupyter-scheduler allows to swap out the scheduling engine which is for example what argo-jupyter-scheduler does so I imagine that you can also swap it for cron a scheduler too.

that's why I'm looking for anything similar to it ?

https://github.com/nebari-dev/argo-jupyter-scheduler that I mentioned can run tasks in the background the same way as cron would, but it has a dependency on argo, conda-store (for environment management) and I do not think it was tested outside of nebari so it may or may not be good fit for you -depending on what your deployment is.

[mouatez25]

thank you for you answers!!

I was able before to change some line of codes( setup.py + package.json)to make it work with jupyterlab 3.6.4,i'm trying to do the same with jupyterlab4 .

even using pip only to install the package does not work and give me the error message mentioned before.

[mouatez25]

so now the question is:
do we have a scheduler which does not depend on jupyerlab session to install in linux ( no argo , no container ...)

thanks

[Jason Weill]

As I mentioned in tiburon-security/jupyterlab_scheduler#25 (comment), you can run Jupyter notebooks unattended, on a schedule, without having JupyterLab running, by using crond or another unattended scheduler with a program such as papermill that can run your notebooks independently of JupyterLab or Jupyter Server.

Note that "JupyterLab Scheduler" is a separate project than "Jupyter Scheduler"; the latter is officially maintained as part of the Jupyter Server organization, whereas the former is maintained by a third party. The latter's 1.x release will remain in maintenance until JupyterLab 3.x's nominal end of maintenance date, which is 2024-05-15 (tomorrow).

We can keep the conversation going in the jupyterlab_scheduler issue linked above.