1566748 : Fwd: ID not updated

Created: 2026-01-13T11:14:34Z - current status: new

Here is the anonymized and summarized version of the reported issue:

Summary of the Issue

A user ([USERNAME]) was recently added to the Unix group cssb on the Maxwell cluster to gain access to specific software for a CryoEM course. Despite logging out and starting a new session, the group assignment is not being reflected in the user’s active session.

The user confirmed that their account details (e.g., group membership) have not been updated on the cluster, even though the change was made ~45 minutes prior.

Possible Causes & Solution

  1. Group Propagation Delay:
  2. Group membership changes on Unix systems may require a relogin or session restart to take effect. However, the user has already done this without success.

  3. Next Step: The user should verify their current group membership by running the command: bash groups or bash id in a terminal session. If the cssb group is still missing, the change may not have propagated correctly.

  4. Persistent Session Caching (FastX):

  5. If the user is accessing the cluster via FastX (browser/client), persistent sessions may retain old group permissions. Even after logging out, the session might still use cached credentials.

  6. Solution:

    • Fully terminate the FastX session (not just disconnect) and start a fresh one.
    • Alternatively, try accessing the cluster via SSH (ssh [USERNAME]@max-cssb-display.desy.de) to confirm if the group appears there.

  7. System-Level Delay:

  8. Group changes may take time to sync across all nodes, especially in distributed environments like Maxwell.
  9. Next Step: If the issue persists after 1–2 hours, contact the Maxwell support team (maxwell.service@desy.de) to verify the group assignment on the backend.
  1. User: Run groups or id in a terminal to check current group membership.
  2. User: Ensure the FastX session is fully terminated (not just disconnected) and start a new one.
  3. Admin: If the issue remains unresolved, escalate to maxwell.service@desy.de for backend verification.

Sources Used