Linux Tutorials: How to setup SSH keys on Ubuntu/ Linux

Introduction:

SSH, or secure shell, is an encrypted protocol used to administer and communicate with servers. When working with an Ubuntu server, chances are you will spend most of your time in a terminal session connected to your server through SSH.

In this guide, we’ll focus on setting up SSH keys for an Ubuntu 20.04 installation. SSH keys provide a secure way of logging into your server and are recommended for all users.

Steps:

• Login to the Ubuntu machine using SSH client like Putty
• Run: sudo -s (This is to be a root user)
• Run: cd /root/

• Verify if .ssh file exists in the /root dir

• Generate SSH Key. Command: ssh-keygen

•  Move to /root/.ssh directory, Command: cd .ssh

• Verify if the id_rsa.pub was created successfully using command: ls

• Reterive the public ssh key to add it in gitlab, github or butbucket using command more id_rsa.pub
  You can simply copy the key and add them in gitlab, github or butbucket

•  Git clone to check if you are able to clone the directory after adding the key in gitlab, github or butbucket using commands:

exit
sudo git clone git@<Your_Repository_SSH_Clone_URL>