Access with SSH
- Robert Schade
- Axel Keller
- Marcel-Brian Wilkowsky
SSH Authentication
For the authentication, you can
use password-based or ssh-key-based authentication as a user from Paderborn University.
We recommend ssh-key-based authentication with password-protected ssh-keys.
As an external user, you can only use ssh-key-based authentication due to security considerations.
Instruction on how to create an ssh-key can be found here: Managing SSH Keys.
System-Specific Access
Both, Noctua 1 and Noctua 2 provide a jump host which provides load balancing across the front end nodes of each cluster.
Noctua 1
The Jump-Host for Noctua 1 is fe.noctua1.pc2.uni-paderborn.de. Port 22 (SSH).
Interactive Sessions
We recommend the following combined command for an interactive session (replace USERNAME with your lowercase username):
ssh -t USERNAME@fe.noctua1.pc2.uni-paderborn.de ssh noctua1Alternatively, you can put
Host noctua1
HostName fe.noctua1.pc2.uni-paderborn.de
User [USERNAME]
RequestTTY force
IdentityFile [PATH TO PRIVATE KEY]
IdentitiesOnly yes
RemoteCommand ssh noctua1in your ~/.ssh/config and replace [USERNAME] with your username on Noctua and [PATH TO PRIVATE KEY] with the path to your private key of your ssh-key. Then you can use the short command ssh noctua1 to connect to Noctua. You will be asked for the password of your ssh-key when logging in instead of your user password.
If you want to connect to the last connected frontend, then use this command:
ssh -t USERNAME@fe.noctua1.pc2.uni-paderborn.de ssh noctua1-lastIf you need to a run graphical application, the -X option should be used, which enables X11 forwarding with X11 SECURITY extension. The complete command is
Noctua 2
The configuration for Noctua 2 ist quite similar to Noctua 1, except for the hostnames. The Jump-Host for Noctua 2 is fe.noctua2.pc2.uni-paderborn.de. Port 22 (SSH).
Interactive Sessions
We recommend the following combined command for an interactive session (replace USERNAME with your lowercase username):
Alternatively, you can put
in your ~/.ssh/config and replace [USERNAME] with your username on Noctua and [PATH TO PRIVATE KEY] with the path to your private key of your ssh-key. Then you can use the short command ssh noctua2 to connect to Noctua 2. You will be asked for the password of your ssh-key when logging in instead of your user password.
If you want to connect to the last connected frontend, then use this command:
If you need to a run graphical application, the -X option should be used, which enables X11 forwarding with X11 SECURITY extension. The complete command is