Text-mode access using PuTTY¶
Prerequisite: PuTTY and WinSCP¶
You’ve generated a public/private key pair with PuTTY and have an approved account on the VSC clusters.
Connecting to the VSC clusters¶
When you start the PuTTY executable ‘putty.exe’, a configuration screen pops up. Follow the steps below to setup the connection to (one of) the VSC clusters.
In the screenshots, we show the setup for user
vsc98765 to the
genius cluster at KU Leuven via the login node
You will have to
vsc98765with your own VSC user name, and
find the name of the login node for the cluster you want to login in on in the sections on the local VSC clusters, and replace
Within the category Session, in the field ‘Host Name’, type in <vsc-loginnode>, which is the name of the login node of the VSC cluster you want to connect to.
In the category Connection > Data, in the field ‘Auto-login username’, put in <vsc-account>, which is your VSC username that you have received by mail after your request was approved.
In the category Connection > SSH > Auth, click on ‘Browse’ and select the private key that you generated and saved above.
Here, the private key was previously saved in the folder
C:\Users\Me\Keys. In older versions of Windows, you would have to use
C:\Documents and Settings\Me\Keys.
You can also enable agent forwarding by ticking the ‘Allow agent forwarding’ checkbox.
In the category Connection > SSH > X11, click the Enable X11 Forwarding checkbox:
Now go back to Session, and fill in a name in the ‘Saved Sessions’ field and press ‘Save’ to store the session information.
Now pressing ‘Open’ should start ask for you passphrase, and connect you to <vsc-loginnode>.
The first time you make a connection to the login node, a Security Alert will appear and you will be asked to verify the authenticity of the login node.
For future sessions, just select your saved session from the list and press ‘Open’.
Troubleshooting PuTTY connection issues¶
If you have trouble accessing the infrastructure, the support staff will likely ask you to provide a log. After you have made a failed attempt to connect, you can obtain the connection log by
right-clicking in PuTTY’s title bar and selecting Event Log.
In the dialog window that appears, click the Copy button to copy the log messages. They are copied as text and can be pasted in your message to support.