Adding your SSH key as a project member

You have been added to a ROMEO project. To get access, add your SSH key on the ROMEO portal.

Log in to the portal

Log in at romeo.univ-reims.fr/portal. Use the same email address as the one used to add you:

Who you are	How to log in
URCA staff or student	Authentification URCA (URCA CAS)
Other academic	EDUGAIN, then your institution's login; your account is validated manually (watch your mailbox and spam folder)
Anyone who cannot log in with EDUGAIN (companies, other non-academics)	Magic Link: enter your email address and click the sign-in link sent to you. The first time, open a ticket at romeo-ticket.univ-reims.fr under Comptes / Accéder au portail ROMEO pour les extérieurs à l'URCA et aux structures partenaires so ROMEO can verify your identity

Your Dashboard

Once you are logged in, the project you were added to appears on your Dashboard. You can change the portal language at the top of the Dashboard, next to your email address.

Set a preferred login

Before adding your key, you must reserve a Preferred login: it is used to create your account on ROMEO2025. Open your profile menu (top right), enter the login you want in Preferred login and click Apply. Until you do, the Dashboard shows Warning, you have not set a preferred login.

Add your SSH key and connect

1. Generate an Ed25519 key on your own computer (Linux, macOS, or Windows 10/11 PowerShell). Set a passphrase when asked and keep the default file names.

   ssh-keygen -t ed25519

   This creates ~/.ssh/id_ed25519 (private key, never share it) and ~/.ssh/id_ed25519.pub (public key). RSA keys are no longer accepted.

2. Add the public key to your portal account. Click your email address (top right) → My keys → Add a new key. Enter a Label and paste the full content of id_ed25519.pub into Key (it starts with ssh-ed25519). Then set the two options below, so the key is automatically linked to your project's machine:

   • Validity: Valid SSH key
   • SSH key used by default for all my resources: Yes

3. Wait up to one hour, then connect with the account name shown in the Login: field of your Dashboard:

   ssh <username>@romeo1.univ-reims.fr
   remarque

   You can also use the login server romeo2.univ-reims.fr.

If the connection fails

Check that your key is linked: on your Dashboard, find your project, then click manage my keys in it.

• Deployed is green: your key is deployed, you can connect.
• Active is not green: switch it on and wait up to one hour.

attention

After several failed connection attempts, a protection mechanism blocks your computer's IP address. Wait one hour before trying again.

If your key is Active but still not Deployed after one hour, or if it is Deployed but you still cannot connect, open a ticket at romeo-ticket.univ-reims.fr.

Good to know

attention

Paste only the public key (.pub) on the portal, never the private one. ROMEO staff will never ask for it.

• One key per computer: if you work from two machines, create two keys and add both.
• Adding keys by hand to ~/.ssh/authorized_keys on ROMEO2025 is not allowed; always go through the portal.

Sources: SSH keys and connection · Portal access · Connecting to ROMEO 2025 · Security best practices