If you don’t already have an SSH key pair and are not generating a deploy key, accept the suggested file and directory. Your SSH client will use the resulting SSH key pair with no additional configuration. Alternatively, you can save the new SSH key pair in a different location. You can assign the directory and file name of your choice. You’re looking for a pair of files named something like iddsa or idrsa and a matching file with a.pub extension. The.pub file is your public key, and the other file is the corresponding private key. If you don’t have these files (or you don’t even have a.ssh directory), you can create them by running a program called ssh-keygen, which is provided with the SSH package on Linux/macOS. 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. Go to your command line. Follow the instructions to generate your SSH key pair. Adding your SSH public key to GitLab. To add the SSH public key to GitLab, see Adding an SSH key to your GitLab account.

• Ssh Key Generation
• Gitlab Deploy Key
• Generating A New Ssh Key Pair Gitlab Youtube Download
• Ssh Key Setup

Objectives

• Explain what an SSH key is
• Generate your own SSH key pair
• Add your SSH key to your GitHub account
• Learn how to use your SSH key in your GitHub workflow

Why Use an SSH Key?

When working with a GitHub repository, you'll often need to identify yourself to GitHub using your username and password. An SSH key is an alternate way to identify yourself that doesn't require you to enter you username and password every time.

SSH keys come in pairs, a public key that gets shared with services like GitHub, and a private key that is stored only on your computer. If the keys match, you're granted access.

The cryptography behind SSH keys ensures that no one can reverse engineer your private key from the public one.

Generating an SSH key pair

Ssh Key Generation

The first step in using SSH authorization with GitHub is to generate your own key pair.

You might already have an SSH key pair on your machine. You can check to see if one exists by moving to your .ssh directory and listing the contents.

If you see id_rsa.pub, you already have a key pair and don't need to create a new one.

If you don't see id_rsa.pub, use the following command to generate a new key pair. Make sure to replace your@email.com with your own email address.

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(The -o option was added in 2014; if this command fails for you, just remove the -o and try again)

When asked where to save the new key, hit enter to accept the default location.

You will then be asked to provide an optional passphrase. This can be used to make your key even more secure, but for this lesson you can skip it by hitting enter twice.

When the key generation is complete, you should see the following confirmation:

The random art image is an alternate way to match keys but we won't be needing this.

Add your public key to GitHub

Gitlab Deploy Key

We now need to tell GitHub about your public key. Display the contents of your new public key file with cat:

The output should look something like this:

Copy the contents of the output to your clipboard.

Login to github.com and bring up your account settings by clicking the tools icon.

Select SSH Keys from the side menu, then click the Add SSH key button.

Name your key something whatever you like, and paste the contents of your clipboard into the Key text box.

Finally, hit Add key to save. Enter your github password if prompted.

####Using Your SSH Key

Going forward, you can use the SSH clone URL when copying a repo to your local machine.

This will allow you to bypass entering your username and password for future GitHub commands.

Key Points

• SSH is a secure alternative to username/password authorization
• SSH keys are generated in public / private pairs. Your public key can be shared with others. The private keys stays on your machine only.
• You can authorize with GitHub through SSH by sharing your public key with GitHub.

You generate an SSH key through macOS by using the Terminal application. Once you upload a valid public SSH key, the Triton Compute Service uses SmartLogin to copy the public key to any new SmartMachine you provision.

Joyent recommends RSA keys because the node-manta CLI programs work with RSA keys both locally and with the ssh agent. DSA keys will work only if the private key is on the same system as the CLI, and not password-protected.

About Terminal

Terminal is the terminal emulator which provides a text-based command line interface to the Unix shell of macOS.

To open the macOS Terminal, follow these steps:

1. In Finder, choose Utilities from the Applications folder.
2. Find Terminal in the Utilities listw.
3. Open Terminal.

The Terminal window opens with the commandline prompt displaying the name of your machine and your username.

Generating an SSH key

An SSH key consists of a pair of files. One is the private key, which should never be shared with anyone. The other is the public key. The other file is a public key which allows you to log into the containers and VMs you provision. When you generate the keys, you will use ssh-keygen to store the keys in a safe location so you can bypass the login prompt when connecting to your instances.

To generate SSH keys in macOS, follow these steps:

1. Enter the following command in the Terminal window.

   This starts the key generation process. When you execute this command, the ssh-keygen utility prompts you to indicate where to store the key.

2. Press the ENTER key to accept the default location. The ssh-keygen utility prompts you for a passphrase.

3. Type in a passphrase. You can also hit the ENTER key to accept the default (no passphrase). However, this is not recommended.

You will need to enter the passphrase a second time to continue.

After you confirm the passphrase, the system generates the key pair.

Your private key is saved to the id_rsa file in the .ssh directory and is used to verify the public key you use belongs to the same Triton Compute Service account.

Your public key is saved to the id_rsa.pub;file and is the key you upload to your Triton Compute Service account. You can save this key to the clipboard by running this:

Importing your SSH key

Now you must import the copied SSH key to the portal.

1. After you copy the SSH key to the clipboard, return to your account page.
2. Choose to Import Public Key and paste your SSH key into the Public Key field.
3. In the Key Name field, provide a name for the key. Note: although providing a key name is optional, it is a best practice for ease of managing multiple SSH keys.
4. Add the key. It will now appear in your table of keys under SSH.

Troubleshooting

Generating A New Ssh Key Pair Gitlab Youtube Download

You may see a password prompt like this:

This is because:

• You did not enter the correct passphrase.
• The private key on your Macintosh (id_rsa) does not match the public key stored with your Triton Compute Service account.
• The public key was not entered correctly in your Triton account.

What are my next steps?

Right in the portal, you can easily create Docker containers, infrastructure containers, and hardware virtual machines.

Ssh Key Setup

In order to use the Terminal to create instances, set up triton and CloudAPI as well as the triton-docker commandline tool.