TLJH failing on Ubuntu 22.04 LTS

JupyterHub
1

Hello All.

After updating from 20.04 LTS to 22.04 LTS, our “The Littlest Jupyter Hub” (TLJH) has failed to start, nor can we install it.

On a reboot, we get the following status.

× jupyterhub.service
     Loaded: loaded (/etc/systemd/system/jupyterhub.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Mon 2022-05-02 18:17:08 UTC; 2min 15s ago
    Process: 988 ExecStart=/opt/tljh/hub/bin/python3 -m jupyterhub.app -f /opt/tljh/hub/lib/python3.8/site-packages/tljh/jupyterhub_config.py --upgrade-db (code=exited, status=1/FAILURE)
   Main PID: 988 (code=exited, status=1/FAILURE)
        CPU: 55ms

May 02 18:17:08 squall systemd[1]: jupyterhub.service: Scheduled restart job, restart counter is at 5.
May 02 18:17:08 squall systemd[1]: Stopped jupyterhub.service.
May 02 18:17:08 squall systemd[1]: jupyterhub.service: Start request repeated too quickly.
May 02 18:17:08 squall systemd[1]: jupyterhub.service: Failed with result 'exit-code'.
May 02 18:17:08 squall systemd[1]: Failed to start jupyterhub.service.

Accessing the service via the web browser gives us a “Bad Gateway” statement and nothing else.

Reinstalling/Updating TLJH gives the following error:

curl -L https://tljh.jupyter.org/bootstrap.py | sudo python3 -  --admin *munged_admin_name*
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 14047  100 14047    0     0  25161      0 --:--:-- --:--:-- --:--:-- 25161
Existing TLJH installation detected, upgrading...
Upgrading pip...
Ran /opt/tljh/hub/bin/pip install --upgrade pip==21.3.* with exit code 1
Traceback (most recent call last):
  File "/opt/tljh/hub/bin/pip", line 5, in <module>
    from pip._internal.cli.main import main
ModuleNotFoundError: No module named 'pip'

Traceback (most recent call last):
  File "<stdin>", line 396, in <module>
  File "<stdin>", line 371, in main
  File "<stdin>", line 160, in run_subprocess
subprocess.CalledProcessError: Command '['/opt/tljh/hub/bin/pip', 'install', '--upgrade', 'pip==21.3.*']' returned non-zero exit status 1.

with the following log statement.

2022-05-02 18:24:20,543 Existing TLJH installation detected, upgrading...
2022-05-02 18:24:20,543 Upgrading pip...

Please Advise, Cheers and Thanks,
Bill Capehart
SD Mines

2

Hi! TLJH hasn’t been tested with Ubuntu 22.04. Thanks for testing it, I’ve added a feature request: Add support for Ubuntu 22.04 · Issue #813 · jupyterhub/the-littlest-jupyterhub · GitHub

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