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Login to the Pelle console environment with a password

There are multiple ways to log in to Pelle. This page describes how to do so using a terminal and a password.

If you want to get rid of using a password every time, see login to the Pelle console environment with an SSH key.

Procedure

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1. Use ssh to log in

From a terminal, use ssh to log in:

ssh [username]@pelle.uppmax.uu.se

[username] is your UPPMAX username, for example, sven, resulting in:

ssh sven@pelle.uppmax.uu.se

Using this login, graphics (i.e. images) on Pelle cannot be displayed.

How does this look like the first time? 
sven@svens_computer:~$ ssh -X sven@pelle.uppmax.uu.se
The authenticity of host 'pelle.uppmax.uu.se (89.44.250.8<X>)' can't be established.
ECDSA key fingerprint is SHA256:W/MazH3WrH0wKrHBOJpPbDaU4qeYGqiv3FRPsdXIsb4.
This key is not known by any other names.
Are you sure you want to continue connecting (yes/no/[fingerprint])?

  • Type yes!

  • Other valid fingerprints are:

    • SHA256:y241gg8SExSktACnpD+OvROrMPTJcXYYdT/zYReef+k
    • SHA256:hkhuV+0mUDL7N4Jpr8/OWInrORSAL5ZRpvAqfjyg7Jg
How can I display graphics on Pelle?

To display graphics (i.e. images) on Pelle, use -X:

ssh -X username@pelle.uppmax.uu.se

This option enable so-called X forwarding, which allows you to run programs that require light graphics, such as eog to display an image.

Why no -A?

On Pelle, one can use -A:

ssh -A username@pelle.uppmax.uu.se

This option is only useful when you want to log in to Pelle via the console using an SSH key. As we here use passwords (i.e. no SSH keys) to access Pelle, -A is unused and hence we simplify this documentation by omitting it.

2. Type your UPPMAX password

Type your UPPMAX password.

How does this look like? 
Provide your normal UPPMAX password. You will supply the TOTP code separately, in the next step.

(sven@pelle.uppmax.uu.se) Password:
(sven@pelle.uppmax.uu.se)

After which you'll asked for your TOTP. Go to the next step.

3. Type your TOTP

Type the TOTP from the UPPMAX 2-factor authentication service, for example 123456, then press enter.

How does this look like? 
Second factor (TOTP UPPMAX):

4. You are in

Enjoy! You are in! Or, to be precise, you are in your home folder on a Pelle login node.

How to behave on a login node

On a login node, one can and should do simple things only: it is a resource shared with all other users on that node.

If you need to do more intense calculations, use the Slurm job scheduler.

If you need to do more intense calculations interactively, use an interactive session.