problems using smb filesystem with kerberos

[tharwan]

Hi,

I was trying to setup a filesystem that uses smb and kerberos authentication. Using fsspec in a notebook works just fine. Jupyter-fsspec also initialises the filesystem but then throws errors in the logs. Setup looks like this:

sources:
  - name: "H_Drive"
    path: "smb://<host>/<share>"
    kwargs:
      host: "<host>"

and the logs I could identify:

INFO:jupyter_fsspec.file_manager:Initialized filesystem 'H_Drive' with protocol 'smb'
[E 2025-02-24 09:47:20.400 ServerApp] {
      "Traceparent": "00-bbf169150e001a25cdb58d479a6cb7a4-08bbb02d496b27d0-01",
      "Cookie": "<user>=[secret]; _xsrf=[secret]; jupyterhub-session-id=[secret]",
      "Accept-Encoding": "gzip, deflate, br",
      "Priority": "u=3, i",
      "Accept-Language": "en-GB,en;q=0.9",
      "Authorization": "token [secret]",
      "Sec-Fetch-Dest": "empty",
      "Referer": "<instance>/user/<user>/lab",
      "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.2 Safari/605.1.15",
      "X-Xsrftoken": "<token>",
      "Sec-Fetch-Mode": "cors",
      "Cache-Control": "no-cache",
      "Pragma": "no-cache",
      "Sec-Fetch-Site": "same-origin",
      "Content-Type": "application/json",
      "Accept": "*/*",
      "X-Forwarded-Port": "443,80",
      "X-Forwarded-Host": "<instance>",
      "X-Forwarded-Proto": "https,http",
      "X-Forwarded-For": "<>:55325, <>,<>",
      "X-Real-Ip": "<>",
      "Connection": "close",
      "Host": "<instance>"
    }
[E 2025-02-24 09:47:20.400 ServerApp] 500 GET /user/<user>/jupyter_fsspec/files?key=[secret]&item_path=&type=default&1740386840283

[martindurant]

Using fsspec in a notebook works just fine

Can you show what lines you run in the notebook?

Is the jupyter server being run from the same environment as the kernel in the notebook?

[tharwan]

I found a workaround to set secret: none in the config.

[martindurant]

Would appreciate if you could show your final config, for the benefit of others.