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Creating SSH key

Linux

If you use Linux at your (local) computer, run in the command line:

ssh-keygen -m PEM -b 2048 -t rsa  
Generating public/private rsa key pair.  
`Enter file in which to save the key (/home/uporabnik/.ssh/id_rsa): `  
`Created directory '/home/uporabnik/.ssh'.`  
`Enter passphrase (empty for no passphrase): `  
`Enter same passphrase again: `  
`Your identification has been saved in /home/uporabnik/.ssh/id_rsa.`  
`Your public key has been saved in /home/uporabnik/.ssh/id_rsa.pub.`  
`The key fingerprint is:`  
`SHA256:bzJ/c37QCkVJW8Zrqwt3HjNrsWeOjmV1Jaa3D1jxwwM uporabnik@racunalnik`  
`The key's randomart image is:`  
`+---[RSA 2048]----+`  
`|             ..oo|`  
`|              o+.|`  
`|             E= o|`  
`|             o+*.|`  
`|        S   ..+==|`  
`|         .  .+.==|`  
`|        o o..o*Bo|`  
`|         =  ===*O|`  
`|          ...***+|`  
`+----[SHA256]-----+`

The public part of the key which is stored to /home/user/.ssh/id_rsa.pub has been sent to administrators to arrange access to the servers/home/uporabnik/.ssh/id_rsa.pub

Windows

If you use Windows at your local computer, then you should do:

  • first download and install the Putty software from https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html

  • Once installed, find and run the "puttygen" program. You will get

  • When it opens, select the "Generate" option and move the mouse across the empty field to generate the key

  • Once the key is generated, you can set the password for the key in "Keypassphrase" and "Confirm passphrase"

  • Click "Save public key" option to save the public part of the key (.pub extension).

  • By "Save private key" option you save the private part of the key (.ppk extension), which will then allow you to access the servers via the Putty program.

  • To access HPCFS with Nomachine graphical access program, you need also to select "Conversions" and "Export OpenSSH key" above, to store the generated private key in appropriate form (.key extension).

  • Send the public part of the key to hpc@fs.uni-lj.si

Dostop preko grafičnega vmesnika

Linux

Namestitev v Ubuntu Linux

Pojdite na https://www.nomachine.com/download Izberite Download pod
NoMachine for Linux

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Izberite NoMachine for Linux DEB amd64

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Izberite Download

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Z dvojnim klikom odprite preneseno datoteko. V pojavnem oknu izberite
Install Package. Po potrebi vnesite geslo.

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Po uspešni namestitvi, lahko med programi najdete NoMachine. Z enojnim
klikom ga odprete. Skrbno preberite pozdravni zaslon, saj vsebuje
ključna navodila in informacije, kako z NoMachine programom rokovati.

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Namestitev Povezave

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Kliknemo na New da določimo novo povezavo.

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Protocol pustimo izbrano NX ter izberemo Continue.

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Vpišemo ime strežnika "viz.hpc.fs.uni-lj.si" ter izberemo Continue.

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Določimo dostop z "Private key" ter izberemo Continue.

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Izberemo lokacijo privatnega ključa. Ponavadi je to v domači mapi pod
.ssh/id_rsa. Če želimo lahko izberemo "Import the private key to the
connection file" da ga uvozi v samo povezavo. Izberemo Continue.

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Pustimo Don't use a proxy, razen če se povezujem preko posredniškega
strežnika. Izberemo Continue.

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Določimo ime povezave ter če želimo ustvariti bližnico na namizje.
Izberemo Done.

Vzpostavitev povezave

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Izberite shranjeno povezavo in kliknite na gumb "Connect"

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Ob prvem povezovanju vas lahko vpraša da potrdite validnost strežnika.
Če se podatki ujemajo izberete Yes.

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  • The image file may be corrupted
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Vnesite vaše uporabniško ime na HPC FS sistemu in geslo, ki odklene vaš
ključ ter kliknite na gumb "OK".

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Izberite "Create a new virtual desktop" in kliknite na gumb "Continue".

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Program vam bo prikazal navodila za upravljanje z namizjem. POZORNO JIH
PREBERITE in nadaljujte z klikom na gumb "OK". Začel se bo postopek
Ustvarjanja vašega namizja.

OB PRVEM ZAGONU NAMIZJA se vam bo prikazal čarovnik za nastavitev
namizja. Priporočamo nastavitve, kot v spodnjih posnetkih zaslona.

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
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Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
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Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
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Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
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Image Not Showing Possible Reasons
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  • The server hosting the image is unavailable
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Ko zaključite z čarovnikom se vam bo pripravilo novo namizje. Ob prvem
zagonu se vam bodo odprla tudi pojavna okna z predstavitvijo, ki jih
lahko zaprete.

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Vsi programi so vam na voljo v začetnem meniju.
Do terminala pridete v zečetnem meniju Sistem > Terminal

Ko končate z delom se iz seje odjavite. To storite tako, da izberete
Začetni meni > Odjava

Windows

Pridobite program na povezavi https://www.nomachine.com/download/. Po
uspešni namestitvi poženite program.

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Kliknite na gumb "New", da začnete z pripravo nove seje

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Izberite protokol "NX" in kliknite na gumb "Continue"

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Vnesite naslov viz.hpc.fs.uni-lj.si in kliknite na gumb "Continue"

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Izberite "Private key" in kliknite "Continue"

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Poiščite vaš ključ in ga naložite, nato kliknite gumb "Continue"

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Izberuite "Don't use a proxy" in kliknite na "Continue"

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Poimenujte vašo povezavo in kliknite na gumb "Done"

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Izberite shranjeno povezavo in kliknite na gumb "Connect"

Image Not Showing Possible Reasons
  • The image file may be corrupted
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  • The image format is not supported
Learn More →

Ob prvem povezovanju vas lahko vpraša da potrdite validnost strežnika.
Če se podatki ujemajo izberete Yes.

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →

Vnesite vaše uporabniško ime na HPC FS sistemu in geslo, ki odklene vaš
ključ ter kliknite na gumb "OK".

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →

Izberite "Create a new virtual desktop" in kliknite na gumb "Continue".

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →

Program vam bo prikazal navodila za upravljanje z namizjem. POZORNO JIH
PREBERITE in nadaljujte z klikom na gumb "OK". Začel se bo postopek
Ustvarjanja vašega namizja.

OB PRVEM ZAGONU NAMIZJA se vam bo prikazal čarovnik za nastavitev
namizja. Priporočamo nastavitve, kot v spodnjih posnetkih zaslona.

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →

Ko zaključite z čarovnikom se vam bo pripravilo novo namizje. Ob prvem
zagonu se vam bodo odprla tudi pojavna okna z predstavitvijo, ki jih
lahko zaprete.

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →

Vsi programi so vam na voljo v začetnem meniju.

Do terminala pridete v zečetnem meniju Sistem > Terminal

Ko končate z delom se iz seje odjavite. To storite tako, da izberete
Začetni meni > Odjava

=Dostop preko SSH=

Linux

ssh uporabniškoime@viz.hpc.fs.uni-lj.si

[uporabniškoime@viz ~]$

Windows

Namestite si aplikacijo za vzpostavitev SSH povezave. Priporočamo Putty
https://www.putty.org/

V polje Host Name (or IP address) vnesite naslov
viz.hpc.fs.uni-lj.si, Port pa pustite 22.

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Nato odprite meni Connection > SSH > Auth

In v odseku Authentication parameters s klikom na gumb "Browse" naložite
vaš PRIVATNI SSH KLJUČ

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*Če pa uporabljate agenta za SSH ključe (kot npr. Pagent) odkljukajte
kljukico pri "Allow agent forwarding". Prepričajte se, da imate v agentu
naložen ključ.

Nato kliknite na gumb "Open".

Odprla se vam bo seja, kjer vas bo sistem vprašal za vaše uporabniško
ime in geslo, ki ste si ga določili pri generiranju vašega SSH ključa.
Ko boste pravilno vnesli podatke se vam bo odprla SSH seja.

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Granting access You can access the supercomputer HPCFS by username and password OR by ssh key. In both cases, you first need approval from computing center of UL FME. To get it, you need to send to hpc@fs.uni-lj.si two things: a completed <a href="https://www.fs.uni-lj.si/wp-content/uploads/2022/12/Access-HPCFS-EN-.pdf">form</a> (fill it out, sign it, provide a signature from the head of research unit (laboratory) whose computing resources you will spend); encrypted password OR SSH key:password: click on the <a href="http://hpc.fs.uni-lj.si/password">password</a> to obtain the encrypted password. Send this password to hpc@fs.uni-lj.si; SSH key: you can create and distribute SSH key by following the instructions below. Once the account is approved and activated, you will recieve an email notification to the address you provided in the form. You will be able to access the HPCFS using password that you provided.

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