It is STRONGLY recommended to enter a passphrase. The next request will be: Enter passphrase (empty for no passphrase): Otherwise, you can select a different path and name in order not to overwrite the previous key and press Enter. If it is the first public key, you can press Enter. Enter file in which to save the key (~/.ssh/id_rsa): You will receive the request: Generating public/private rsa key pair. Linuxġ) Open a terminal on the workstation you will use to connect to our systems and generate an SSH key pair $ ssh-keygen -t rsa If you use PuTTY you can find the instructions to generate the ssh key pair on this webpage. If you use an SSH client for Windows, like, for example, OpenSSH or MobaXterm, the instructions are the same as the Linux ones in the dedicated section. Check permissions of your authorized_keys to be 600 (you can change it using chmod 600 authorized_keys).between Marconi100 and Galileo100) you can run interactive jobs so to use the correct partition with a high wall time limit and inserting the password. In case you need to transfer a lot of files between two clusters (i.e. You need only to connect using ssh -A option, and then you can connect to every system to which you exchanged the key generated on your local system. It is not needed since our login nodes we allowed forward agent. Never generate ssh key pair on login nodes to connect to a third system.Never move your private key id_rsa from your workstation to reduce the risk of being stolen.This is for the security of your username.
We suggest removing from your $HOME/.ssh the authorized_keys file when you no longer need to access it without a password.Important advice for securityīefore describing the procedure, we want to stress the following general tips to grant a real secure connection: Instructions may be slightly different depending on the OS you are using. This procedure also guarantees a higher security connection, but only if one follows some general rules that you can find in the text below. This can help you when you need to transfer many files between your workstation and a system and vice versa. In your workstation, you can create a public key to let you connect to the systems without inserting the password.
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