Access¶

Regular cluster access requires eduVPN with the profile "MWN Split-Tunnel (Standard)" from anywhere, including campus, home, and eduroam. External collaborators can use the jump host described below without a VPN.

Connecting with eduVPN¶

Connect to eduVPN using the "MWN Split-Tunnel (Standard)" profile, then connect to login.coma-cluster.de over SSH on port 22 (the default):

$ ssh username@login.coma-cluster.de

Note

There are known DNS issues over eduVPN and eduroam that we are working on with campus IT. If the hostname does not resolve, connect by IP:

$ ssh username@10.157.222.195

To change the SSH key on your account, open a Change SSH key ticket.

External users¶

External collaborators can log in through the jump host without a VPN:

$ ssh -4 -p 55841 username@guest.coma-cluster.de

This entrypoint is only enabled for accounts flagged as external. A typical SSH config entry:

Host coma-cluster
    Hostname guest.coma-cluster.de
    User username
    Port 55841
    AddressFamily inet
    IdentityFile ~/.ssh/id_rsa
    IdentitiesOnly yes

Then:

$ ssh coma-cluster