In this post, we’ll focus on configuring communication between (GitHub How to configure connection over SSH) our computer and the GitHub server using the SSH protocol. (Secure shell) for standard communication protocols used in TCP / IP computer networks.
How To Avoid: git@github.com: permission denied (publickey).
This tutorial allows you to avoid the following error: git@github.com: permission denied (publickey). You won’t believe how easy it is to connect to Github via SSH!
Create RSA Key Pair
First, create an RSA key pair – the public and private key. As we can see, the default path for keys is “/home/<user_name>/.ssh/“. When creating keys, we can protect them with an additional password (Enter passphrase). We can of course skip it by pressing Enter.
pawel@pawel:~$ ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/home/pawel/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/pawel/.ssh/id_rsa. Your public key has been saved in /home/pawel/.ssh/id_rsa.pub. The key fingerprint is: SHA256:DLDvn4R61tr+xwNTOL4YDd+SVxonIMPSjPzLnvZ5MGo pawel@pawel The key's randomart image is: +---[RSA 2048]----+ | .. = | | o+ * . | | . .o o o | | . oo o + o | | ..S* = * | | . .+ @ + | | oo.= X | | .o+E...= | | .o.==o+o . | +----[SHA256]-----+
Our keys are available in order:
- Private key – in /home/pawel/.ssh/id_rsa
- Public key – in /home/pawel/.ssh/id_rsa.pub
Configuration – Connecting to GitHub with SSH
To add a public key to our GitHub account, please log in and go to: https://github.com/settings/keys
Then click the green “New SSH key” button.
In the next window, enter the title – here please enter the unique name of our connection, e.g. test_ssh_key_ubuntu.
In the Key field, paste your previously generated public key. To find out what it looks like, just use the “cat” command to display its contents in the console.
pawel@pawel:~$ cat /home/pawel/.ssh/id_rsa.pub ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC0g6xgWHh6vKjitxD9wTTdhj2A0ZKfh09QsBdlgK9zh2wiQhfiQQWMau6YkkN993w7Dgn6HiOc8MikqxUf/xLfGkr36W7D7HIBKaKkNd/GresLzcv0NukATZQyoChjARoW3kUuPYhxL/wuTMfohSc6vbyl+jak34rG6pQzfZcvsZfGMUsaVQKNy2gUHhYS/yOWanKFf87QIap7Oy12+uZT229BSbrrSkdld4wdHS9/sVUu6ZdAQtdPGXqSdwyxSdQ+YSfbNyX1mrBFNsl0/A3QXA9+25K9Qj4gqVsIzCFzMnyEie3frrq3yzQ+OgYh81yIX4T3z/1JHGvx21nhvZKR pawel@pawel
We can now copy and paste it on the GitHub website. Click the “Add SSH Key” button.
We can now copy and paste it on the GitHub website. Click the “Add SSH Key” button (GitHub How to configure connection over SSH)
Clone The Repository Using SSH – GitHub How To Configure Connection Over SSH
Now we can check if we are able to clone the GitHub repository using SSH. I will show you how to do this on your repository (GitHub How to configure connection over SSH)
We enter the repository selected by, click “Clone” and select the “Use SSH” option.
We copy the generated link and then run the command in the console in the selected directory:
pawel@pawel:~$ git clone git@github.com:bigdata-etl/blog.git Cloning into 'blog'... The authenticity of host 'github.com (140.82.118.4)' can't be established. RSA key fingerprint is SHA256:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'github.com,140.82.118.4' (RSA) to the list of known hosts. remote: Enumerating objects: 4, done. remote: Total 4 (delta 0), reused 0 (delta 0), pack-reused 4 Receiving objects: 100% (4/4), 4.50 KiB | 4.50 MiB/s, done.
Summary
In this post, we went through creating the RSA key pair and configuring GitHub. Now you can easily and securely start managing your Git repository. (GitHub How to configure connection over SSH)
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