Generate Ssh Key Linux Gitlab

When you work with a Git repository, your project may be actively modified by a lot of people. Some of them may not be trustworthy as they may be new employees or something like that. In this case, if they need to do git pull in the server to update the changes of a commit in your production server, you may not want that everybody knows the password of the repository. Another case where you don't want to provide the password of the repository everytime you do git pull or git clone, are automatized deployments.

  1. Generate Ssh Key Gitlab
  2. Generate Ssh Key Linux Github
  3. Generate Ssh Key Windows

Then click Help then click Show Ssh Key, then click Generate Key. While you're at it, then copy to the clipboard, and then go to your Gitlab account page and add the SSH key to your Gitlab account's ssh settings. Creating your SSH key pair; Adding your SSH public key to GitLab. Create and add your SSH key pair. It is best practice to use Git over SSH instead of Git over HTTP. In order to use SSH, you will need to: Create an SSH key pair; Add your SSH public key to GitLab. Creating your SSH key pair. Jul 14, 2019  In the user settings sidebar, click SSH and GPG keys. Then click New SSH key. Fill in the Title field with a descriptive label for the new key (for example, the name of your computer) and paste your public key into the Key field. Finally, click Add SSH key. Configure SSH client to find your GitLab private SSH in the server. As next step you need to establish that, when cloning from Gitlab, the deployment key should be used as authentication instead of an username and a password. For this you need to ensure that ssh-agent is enabled by running the following command: eval $(ssh-agent -s) Then you can proceed to add your key to the SSH registry using the. The SSH stands for Secure Shell or Secure Socket Shell used for managing the networks, operating systems and configurations and also authenticates to the GitLab server without using username and password each time. You can set the SSH keys to provide a reliable connection between the computer.

That's why the the 'deployment keys' feature exist in Gitlab, A deploy key is an SSH key that is stored on your server and grants access to a single Gitlab repository. This key is attached directly to the repository instead of to a personal user account. In this article, we'll show you step by step how you can automatize the deployment process of your project hosted on Gitlab.

1. Find or create an SSH Key for your server

The first thing that you need to do is to verify if your server has already a public key created in the .ssh directory of the user in the server, so start a SSH session to your server and type the following command:

This will automatically search in the folder of your user that in our case is /home/vagrant/.ssh, if the output of the command shows a string that starts with ssh-rsa, then you already have an SSH Key that you can use to add to your repository, so you can skip to the step 2. If instead, you get the output : cat: ~/.ssh/id_rsa.pub: No such file or directory, then you will need to create an SSH Key first. You can create a SSH Key in Ubuntu via SSH with the following command (navigate to the .ssh directory first and type):

To make the process easy, we won't add a Keyphrase for the SSH Key, so as mentioned in the creation wizard just press enter to don't use a keyphrase:

As shown in the image, we no have the id_rsa and id_rsa.pub file in our .ssh directory. This key works as a 'pass' that allows to clone/pull your project in the current server, till this point it doesn't do anything, so you will need to follow the other steps.

2. Configure SSH client to find your GitLab private SSH in the server

As next step you need to establish that, when cloning from Gitlab, the deployment key should be used as authentication instead of an username and a password. For this you need to ensure that ssh-agent is enabled by running the following command:

Then you can proceed to add your key to the SSH registry using the following command:

To retain these settings you'll need to save them to a configuration file. Normally on OpenSSH clients you can configure this in the ~/.ssh/config file. If the file doesn't exist, you can create it:

And register your key in the file. In this tutorial we are adding a single SSH Key from the Gitlab website (non self hosted version), so our config file content will be:

As you may have multiple projects in one server or a project that uses different repositories that need to be updated, you can without a problem implement multiple SSH Keys in the same file following the notation:

3. Add the Server Key as a deployment key in your Repository configuration

Now you need the public key of your server (created in step 1), in this step you are saying to Gitlab 'Hey, if someone uses this SSH Key to clone, allow him to do it'. You can get the content of the public file using a text editor via SFTP, or just by printing the output of the file with SSH using the following command:

This would output in our case the content of the public key:

Keep that long string in the clipboard as you will need it to paste it in Gitlab. As next acccess the Settings of your Repository in Gitlab, in our case as we are using the non self hosted version of Gitlab the configuration for the Deploy Keys is in https://gitlab.com/<username>/<repository-name>/settings/repository. The menu to add a new deploy key looks like this:

Here you would only need to add the content of the id_rsa.pub file, provide a title and decide wheter the server can be used to push changes as well or not (normally unchecked as it is production). Once the key is added in your repository, you should be able now to clone/pull your repository in the deployment server.

4. Clone and pull repository to test

As final step, to verify if everything went right you can clone your repository to see if the credentials of the repository are requested or not, in case it does, please read the tutorial again and check what you did wrong. Otherwise, you will be able to clone your project using the following command:

Note

Generate Ssh Key Gitlab

Remember to clone via SSH, not HTTPS, otherwise you may obviously be asked for the credentials.

By doing this you may have noticed that you didn't have to input your Gitlab username nor password thanks to the deployment key!

Happy coding !

Linux and Mac OS X both come with support for SSH and SSH keys out of the box. Launchpad uses SSH keys to authenticate your computer with your Launchpad account. This guide shows you how to get that done.

SSH Keys

The first thing you need to do is generate your SSH keypair. A keypair, as the name implies, consists of 2 parts: the public key and the private key.

Generate Ssh Key Linux Gitlab

Public Key

Your public key is placed on remote servers so that they can check back with you to see that you are who you say you are.

Private Key

Your private key should NEVER leave your computer! This is the main file that authenticates you. It contains the special unique data that identifies you.

Generating a Keypair

Generating a keypair is very easy.

  1. Open a terminal
  2. Enter in the following in the terminal:$ ssh-keygen -t rsa -b 4096
  3. Accept the defaults, to save your public and private keys to ~/.ssh
  4. Open your public key (~/.ssh/id_rsa.pub) in a text editor (GEdit or Kate on Linux, TextEdit on Mac OS X)

Launchpad & SSH

When you use Launchpad and Bazaar, it likes to use the SSH keys to authenticate you. We need to add our public key to Launchpad.

Adding Your Public Key to GitLab

Gitlab
  1. Open your browser to GitLab and log in
  2. Go to your home page and click on the 'Profile / Settings' link
  3. Click on the 'SSH Keys' tab (Note: not the OpenPGP keys!)
  4. Paste that public key into the text box at the bottom of the page
  5. Click the 'Add Key' button at the bottom of the page

Generate Ssh Key Linux Github

And you're done!

More In Depth Example

This is specific to Mac OS X 10.6, but should be similar on any Mac or Linux system.

Generate Ssh Key Windows

  1. Open Terminal
  2. Change to hidden SSH folder $ cd ~/.ssh/
  3. Generate a key ssh-keygen -t rsa -b 4096 Prompts for above are as follows, just hit enter for the file name, and then enter the password twice and you are done.
    1. Enter file in which to save the key (/Users/username/.ssh/id_rsa): [Just Hit Enter]
    2. Enter passphrase (empty for no passphrase): [Enter a unique password]
    3. Enter same passphrase again: [Renter a unique password]
    4. Make sure you remember your password you enter
    5. Now you should have 2 new files in your folder, named id_rsa and id_rsa.pub which are your private and public keys respectively.
  4. Set permissions on the keys you just created to be as restrictive as possible. chmod 400 id_rsa*
  5. Modify the SSH config file to automatically use your just created key every time you connect to launchpad
    1. Use your choice of text editor to edit ~/.ssh/config
    2. sudo vi config
    3. Hit i to enter insert mode
    4. Add the following text to the bottom, where it says yourlaunchpdusername replace with your gitlab user name. ( to get yourgitlabname visit https://gitlab.com/~ and it will redirect to add your username to the url after the ~ )Host bazaar.launchpad.net&#10; IdentityFile ~/.ssh/id_rsa&#10; User yourgitlabusername
    5. Hit Escape
    6. Hit ZZ
  6. Copy the contents of your public key file on the Maccat ~/.ssh/id_rsa.pub pbcopy Linux users or Mac users can alternatively open ~/.ssh/id_rsa.pub with your favourite text editor or omit pbcopy and just copy it after running the command cat ~/.ssh/id_rsa.pub.
  7. Finally Edit your SSH keys on launchpad as described in Adding Your Public Key to GitLab above. ( you can click on This Link which will take you directly to the page to update your SSH keys on gitlab ). Make sure you are on SSH keys and not PGP keys here.