UServ
UServ is a name referring to a conglomeration of directory and file services as well as shell/compute access to Unix servers.
Home directory
Your UServ home directory is available to you upon logging in on all lab computers within the department.
Shell service
All UServ users can log in to the machine at userv.fbi.h-da.de
using SSH.
This may be used for accessing your UServ home directory remotely.
SSH host key fingerprints for userv.fbi.h-da.de
3072 SHA256:i9y9IfvTfydgLq4fcLs7a9+wUJOk9UO0sHTtQWwVXlQ (RSA)
256 SHA256:XFam+16T3kbxscur9nYm5ez6Jma5UYPDhtWwuRJ5AYw (ECDSA)
256 SHA256:fJaHp1hrI6Z6AP9Qa0o7v7Kwmkg5xbq2ygAkN8ppWK4 (ED25519)
Password-less login using SSH public key authentication
Access to your home directory is provided using kerberized NFS. Your files can
only be read with a valid Kerberos ticket (which is established for you upon
login). This has the side-effect of also preventing the SSH daemon from reading
SSH public keys you may have stored at ~/.ssh/authorized_keys
.
To still allow for password-less login using SSH keys, public keys may be stored within the LDAP directory. SSH is configured to read them from there.
A helper program for this is provided at /usr/local/bin/userv-set-authorized-keys
(also in PATH).
To set up public key login for the current user, using the keys from an
authorized_keys
file:
$ userv-set-authorized-keys ~/.ssh/authorized_keys
Please remember that you have to create a valid keberos ticket (with "kinit") to access your home directory.
LabDisk
The directory hierarchies at /share/LabDisk
and
/share/LabDisk/pub
are available on all lab computers as well as served
through HTTP.
…/LabDisk/pub
is available at https://userv.fbi.h-da.de/pub and is accesible by the public at large…/LabDisk
is available at https://userv.fbi.h-da.de/LabDisk and requires authentication (any university account is ok)
These can be used for distributing files to students.