I have done this so many times but without actually remembering how to do it properly. So here’s my personal note on how to do it. I took inspiration from the Github guidelines.

Protocol

Check for existing keys

Navigate to the .ssh/folder: cd ~/.ssh/ and type ls -al ./ to list possible public SSH keys.
Public SSH keys should be named:

• id_dsa.pub
• id_ecdsa.pub
• id_ed25519.pub
• id_rsa.pub.

Generate a new SSH keys

1. If you don’t have a public key yet, open a Terminal window (Bash Shell).
2. Type: ssh-keygen -t rsa -b 4096 -C "your_email@example.com" indicating an email adress.
3. This creates a new ssh key, using the provided email as a label.
4. When you’re prompted to “Enter a file in which to save the key,” press Enter. This accepts the default file location. Enter a file in which to save the key (/Users/you/.ssh/id_rsa): [Press enter]
5. At the prompt, type a secure passphrase. I prefer not to have one as it saves quite some time when connecting regularly to the same remote machine. It will prompt you: Enter passphrase (empty for no passphrase): [Type a passphrase]. Type enter.

Adding your SSH key to the ssh-agent.

1. Start the ssh-agent in the background. Type eval "$(ssh-agent -s)".
2. Add your SSH private key to the ssh-agent and store your passphrase in the keychain. If you created your key with a different name, or if you are adding an existing key that has a different name, replace id_rsa in the command with the name of your private key file. Type ssh-add -K ~/.ssh/id_rsa.
3. Copy the SSH key to your clipboard: pbcopy < ~/.ssh/id_rsa.pub. If your SSH key file has a different name than the example code, modify the filename to match your current setup.

Adding your SSH key to the remote.

Github

Please refer to this manual: https://help.github.com/en/articles/adding-a-new-ssh-key-to-your-github-account

Genseq

1. Login to genseq with your password. ssh myusername@genseq-h0.science.uva.nl.
2. Go to ~/.ssh/
3. Open the id_rsa.pub file (or create a public key name using the same name as on your machine). Type: nano id_rsa.pub.
4. Copy-paste the public SSH key (stored in your clipboard).

LISA cluster

Please refer to https://userinfo.surfsara.nl/systems/lisa/user-guide/connecting-and-transferring-data