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Objective

We will be using the cluster a lot this term, so the sooner you are able to log in the better. If you run into problems, check out the troubleshooting section below or drop me an email.

On a Mac or Linux

  • Open Terminal.app
  • Type ssh <your_user_name>@144.175.88.21
    • where <your_user_name> is your Hood username. For example, if my user name were ‘slm6n’ I would type

ssh [email protected]

  • Enter your password (not the same as your regular Hood account).

On Windows or Chromebook

There are several ways you can do this, but the easiest way I know of is using the Secure Shell extention on Chrome.

  • Install the Secure Shell extension on your Chrome browser.
  • Once enabled, click on the secure shell icon in the tool bar and select Connection Dialog
  • Enter your Hood username in the user name field.
  • Enter ‘144.175.88.21’ in the host name field.
  • Once you have created the connection (you may need to click in the freeform field), hit the connect button on the bottom right.
  • Enter your password (not the same as your regular Hood account).

Mobile Connections

There are also mobile apps you can use to connect to the cluster. Given the amount of typing required, I wouldn’t recommend this unless you have a keyboard, but even without a keyboard it can work in a pinch. If you do want to connect from a mobile device, I have found that the Termius app works well and is available on both Google and Apple app stores. You will need the following to set up the connection for the first time. After that, you can save the connection and tap to log in.

  • Host name: 144.175.88.21
  • Hood user name
  • Password (not the same as your regular Hood account)

Troubleshooting

Here are some common problems that students have run into. I’ll keep updating this list if I notice any other trends.

  • Password doesn’t work
  • You get a warning that starts out “WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!”
    • This happens when the server has had a major upgrade since the last time you logged in. This is a safety feature that prevents you from logging into a server that is pretending to be the server you normally log into. If you have been logging in frequently and you get this warning unexpectedly, you should probably check with me or the system administrator before logging in.
    • If you are using a terminal window (Mac or Linux), open the file called ~/.ssh/known_hosts and remove the line that starts with 144.175.88.21.
    • If you are using the Chrome app or a mobile app, delete the saved connection and set it up again.