Setup password-less login for HPC

Most HPC resources should now require double authentication which will make this type of password-less login not possible. For those that don’t have double authentication, this will work.

To login automatically from your machine to the remote host, you can save the private/public key pair in both machines. This way, you don’t have to enter password each time you login.

Step 1: Create public and private keys (local computer)


Step 2: Copy the public key to remote-host

ssh-copy-id -i ~/.ssh/ userid@MACHINENAME

Step 3: Login

ssh userid@MACHINENAME
# Ensure file permissions for ~/.ssh/.id_rsa (local) and ~/.ssh/authorized_keys (remote) are such that it is only readable by you!

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