Clicking on the Session ID link will open up a new tab:

Or, you can navigate to it via the command-line:

[salexan5@mblog2 ~]$ ls ondemand/data/sys/dashboard/batch_connect/sys/jupyter/form/output/8c0766ae-b302-47d7-8f40-007460cc3ad1/
after.sh  before.sh  config.py  connection.yml  job_script_content.sh  job_script_options.json  output.log  script.sh  user_defined_context.json

You can view the output.log file under this folder to track the session.

Sometimes when you try and start a Jupyter session it immediately fails to open.

This is typically caused by something that you have done/run/installed that have installed a python package under the library/version folder that is causing a dependency issue with a Python package installed under the kernel..

If you do not have the Session ID, then list the child session folders under ~/ondemand/data/sys/dashboard/batch_connect/sys/jupyter/form/output/ and look at the output.log file under the last child folder created

[salexan5@mblog2 ~]$ ls -altr ~/ondemand/data/sys/dashboard/batch_connect/sys/jupyter/form/output/
...
drwxr-xr-x 2 salexan5 salexan5 4096 Aug  6 08:07 8c0766ae-b302-47d7-8f40-007460cc3ad1

This example is from an older cluster/version of OnDemand, but the principle still applies.

A user had the following error:

[nvlastos@blog2 d248fc5c-162c-42c6-b96d-e2ea46cbf3c1]$ cat output.log
...
TIMING - Starting jupyter at: Fri Jul 26 13:20:12 MDT 2024
Traceback (most recent call last):
  File "/apps/s/jupyterlab/miniconda3/bin/jupyter-lab", line 6, in <module>
    from jupyterlab.labapp import main
  File "/apps/s/jupyterlab/miniconda3/lib/python3.9/site-packages/jupyterlab/__init__.py", line 7, in <module>
    from .labapp import LabApp
  File "/apps/s/jupyterlab/miniconda3/lib/python3.9/site-packages/jupyterlab/labapp.py", line 18, in <module>
    from jupyterlab_server import WORKSPACE_EXTENSION, LabServerApp, slugify
  File "/apps/s/jupyterlab/miniconda3/lib/python3.9/site-packages/jupyterlab_server/__init__.py", line 4, in <module>
    from .app import LabServerApp
  File "/apps/s/jupyterlab/miniconda3/lib/python3.9/site-packages/jupyterlab_server/app.py", line 11, in <module>
    from .handlers import LabConfig, add_handlers
  File "/apps/s/jupyterlab/miniconda3/lib/python3.9/site-packages/jupyterlab_server/handlers.py", line 19, in <module>
    from .translations_handler import TranslationsHandler
  File "/apps/s/jupyterlab/miniconda3/lib/python3.9/site-packages/jupyterlab_server/translations_handler.py", line 16, in <module>
    from .translation_utils import get_language_pack, get_language_packs, is_valid_locale, translator
  File "/apps/s/jupyterlab/miniconda3/lib/python3.9/site-packages/jupyterlab_server/translation_utils.py", line 15, in <module>
    import pkg_resources
  File "/home/nvlastos/.local/lib/python3.9/site-packages/pkg_resources/__init__.py", line 96, in <module>
    from jaraco.text import (
  File "/home/fakeusername/.local/lib/python3.9/site-packages/setuptools/_vendor/jaraco/text/__init__.py", line 12, in <module>
    from jaraco.context import ExceptionTrap
  File "/home/fakeusername/.local/lib/python3.9/site-packages/setuptools/_vendor/jaraco/context.py", line 17, in <module>
    from backports import tarfile
ImportError: cannot import name 'tarfile' from 'backports' (/apps/s/jupyterlab/miniconda3/lib/python3.9/site-packages/backports/__init__.py)
Timed out waiting for Jupyter Notebook server to open port 40276!
TIMING - Wait ended at: Fri Jul 26 13:21:19 MDT 2024
Cleaning up...