How to Setup SSH keys

• https://docs.gitlab.com/ee/user/ssh.html

Generate an SSH key pair

• First, generate a GPG key pair. Your GPG key must use RSA with a key size of 4096 bits.

ssh-keygen -t rsa -b 4096 -C "Github - Thinkpad P16v"

When the terminal asks for where to store the file we can type:

/home/cferiavi/.ssh/id_rsa_github

As we are generating a different SSH key for each provider Github|Gitlab we need to create the file ~/.ssh/config

vi ~/.ssh/config

And insert something like:

# Github.com
Host github.com
  PreferredAuthentications publickey
  IdentityFile ~/.ssh/id_rsa_github

# GitLab.com
Host gitlab.com
  PreferredAuthentications publickey
  IdentityFile ~/.ssh/id_rsa_gitlab

Add an SSH key to your account

Github

• Copy your public key:

xclip -sel clip < ~/.ssh/id_rsa_github.pub

• Add your keys at https://github.com/settings/keys
• Click on New SSH Key
• On Key type select Authentication
• Verify that you can connect:

ssh -T git@github.com

Gitlab

• Copy your public key:

xclip -sel clip < ~/.ssh/id_rsa_gitlab.pub

• Add your keys at https://gitlab.com/-/user_settings/ssh_keys
• Verify that you can connect:

ssh -T git@gitlab.com