diff --git a/docs/topic/security.rst b/docs/topic/security.rst index 6734205..dd6a508 100644 --- a/docs/topic/security.rst +++ b/docs/topic/security.rst @@ -18,7 +18,10 @@ permissions. #. The unix user account created for a JupyterHub user named ```` is ``jupyter-``. This prefix helps prevent clashes with users that already exist - otherwise a user named ``root`` can trivially gain full root - access to your server. + access to your server. If the username (including the ``jupyter-`` prefix) + is longer than 26 characters, it is truncated at 26 characters & a 5 charcter + hash is appeneded to it. This keeps usernames under the linux username limit + of 32 characters while also reducing chances of collision. #. A home directory is created for the user under ``/home/jupyter-``.