Generate Ssh Key Mac High Sierra

Posted on by
Generate Ssh Key Mac High Sierra Average ratng: 3,3/5 2346 votes

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.

Difficulties with ssh-agent in macOS Sierra So it looks like Apple changed the behaviour of the ssh-agent in macOS Sierra. Now it does not autoload all the keys in the keychain that were added with ssh-add -K, so you must explicitly call ssh-add -A. Jun 19, 2018  Ok, so I recently upgraded to High Sierra and ran into this fun little issue about SSH keys no longer being saved to the keychain or automatically being added to the ssh-agent. I have read dozens and dozens of articles, blogs and forum. I followed the instruction on Raspberry Pi website to generate SSH key pairs, towards the end of tutorial, it says once I have copied the idrsa.pub key to the Pi's authorizedkeys, it should use my. Login Raspberry Pi using SSH key pair does not work from Mac OSX Sierra. Ask Question Asked 2 years. With High Sierra and (I think) Sierra.

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

  1. Probably the key realization is that ssh doesn't know you have a Desktop folder and would not want to look there for the key even if it knew. (You could change the final IdentityFile statement to actually change that, but really, at this point you are better off learning the standard practice.).
  2. Oct 01, 2016  The MacOS Sierra upgrade breaking SSH keys. After I upgraded MacOS Sierra, my SSH key access to Ubuntu servers broke. I learned that my older ssh-dss (DSA) keys were no longer secure and that I needed to replace them with RSA keys.
  3. On OSX, the native ssh-add client has a special argument to save the private key's passphrase in the OSX keychain, which means that your normal login will unlock it for use with ssh. On OSX Sierra and later, you also need to configure SSH to always use the keychain (see Step 2 below). Alternatively you can use a key without a passphrase, but if you prefer the security that's certainly.

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.

Never share your private key with anyone!

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.

Generate Ssh Key Mac High Sierra
  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

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.

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

Do not upgrade to macOS Sierra if you have a cloud server (AWS, Digital Ocean, etc.) Read this post first. It will walk you through safely updating to Sierra and updating your SSH keys.

Like many developers, I got a notice from Apple bugging me to install its new macOS Sierra. I clicked “remind me tomorrow” a few days in a row. Then I finally caved one night before going to bed.

Mac Os X Create Ssh Key

When I woke up, I was no longer able to access Free Code Camp’s servers. It took me a while to realize what had happened. Luckily BerkeleyTrue hadn’t upgraded yet, and was able to add my new SSH keys.

It turns out Apple decided to quietly force 2048-bit RSA keys on everyone, which has been a mild inconvenience for some, and a confused panic for others.

If you’re wondering why RSA keys are more secure than the old DSA keys, they aren’t inherently so. But DSA keys can usually only be 1024 bits, while RSA keys can be longer, which is the case with Sierra’s default 2048-bit RSA keys. Those extra bits make these new keys substantially harder to crack.

Let’s set up your new 2048-bit RSA SSH key.

Step #1: delete your old key and create a new one

First, let’s check and make sure you indeed need a new key.

Open up your terminal and type:

If the prompt responds with a string that starts with “2048 SHA256” you’re done and don’t need to take any further action.

Otherwise, create a new key by running:

The prompt should respond with:

You can just press enter to save it in the default place. Note that this will overwrite your old (broken) key.

You can leave this blank or add a password for a little extra security (and a lot more typing).

Then you’ll get with a cool random “art” that always seems to be shaped like a Christmas tree:

Now make sure your key has the right access permissions by running:

You can check the contents of your public key by running:

Which should return something like:

You’ll need to put this key on your server. To ensure you copy all of it, I recommend you can copy it directly to your clipboard by running:

Step #2: add your new public key to your server

If you can SSH into your server without your key, then try to gain access using a password if you have one.

Otherwise you’ll need to ask someone else who has access to the server to do this for you.

If you’ve disabled password access to your server (which many experts would recommend for security reasons), you may be able to temporarily re-enable password access.

Once you have root access to your server — assuming it’s a Linux server — you just need to run this command:

This will open up your authorized key file using the minimalist text editor “nano” that is included with most Linux distributions. Or you could use Vim.

Then paste in your public SSH key from earlier. Hit control+o to save your changes, then control+x to quit nano.

Disconnect from your server. Now you’re ready to try logging in using your new SSH key.

Generate Ssh Key Mac Os X

Step #3: SSH into your server

Generate Ssh Key Mac High Sierra Os

Run this command to SSH in, replacing root@0.0.0.0 with your server’s login and IP address:

You should gain normal SSH access to your to your server, without needing to enter a password.

Mac Os

Congratulations! You’re back where you were yesterday, except now Apple will quit bugging you about upgrading your operating system. ?

Generate Ssh Key Mac High Sierra Download

I only write about programming and technology. If you follow me on Twitter I won’t waste your time. ?