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Difference between revisions of "HPRC:Access"

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(Off-campus Access)
(Access Using SSH)
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To connect to HPRC clusters, you must use SSH (Secure Shell).  SSH is a client-server software that provides for secure (by encryption) logins and other communication between two hosts.
 
To connect to HPRC clusters, you must use SSH (Secure Shell).  SSH is a client-server software that provides for secure (by encryption) logins and other communication between two hosts.
SSH is freely available in the Internet for Linux/Unix and PC Windows (in the guise of [http://mobaxterm.mobatek.net/ MobaXterm]).
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SSH is freely available on the Internet for Linux/Unix and PC Windows (in the guise of [http://mobaxterm.mobatek.net/ MobaXterm]).
  
To initiate SSH connection to target cluster's login node, find the hostname and credential (userID/password) info from Table 1 below.  For example, connecting to Ada cluster from a terminal or terminal emulator, enter:
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To initiate SSH connection to target cluster's login node, find the hostname and credential (userID/password) info from Table 1 below.  For example, connecting to Ada cluster from a terminal enter:
  
 
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Revision as of 15:10, 7 March 2016

THIS PAGE IS UNDER CONSTRUCTION

To connect to HPRC clusters, you must use SSH (Secure Shell). SSH is a client-server software that provides for secure (by encryption) logins and other communication between two hosts. SSH is freely available on the Internet for Linux/Unix and PC Windows (in the guise of MobaXterm).

To initiate SSH connection to target cluster's login node, find the hostname and credential (userID/password) info from Table 1 below. For example, connecting to Ada cluster from a terminal enter:

localhost$ ssh NetID@ada.tamu.edu

where the ada.tamu.edu address is a DNS round-robin alias for ada[1-8].tamu.edu. You will be prompted for your password in order to establish authentication. Once you login into one of the login nodes, the shell's prompt will be NetID.ada[1-8].

If, however, you are connecting for the very first time, you will see a message similar to the following, before arriving at the password prompt:

The authenticity of host 'ada (165.91.16.18)' can't be established.
ECDSA key fingerprint is SHA256:SfQPtDJW30sj4kG2c4KGFw7LcEduSOFeXGIlsf4WhEA.
ECDSA key fingerprint is MD5:9c:ea:ba:22:0f:6f:1e:b9:0c:21:d4:b6:70:0f:a0:d5.
Are you sure you want to continue connecting (yes/no)? 

Type yes and you will then be presented with the password prompt.

Warning: Permanently added 'ada' (ECDSA) to the list of known hosts.
NetID@ada.tamu.edu's password:


Table 1: Hostname and credential info of HPRC clusters
Cluster Hostname Number of login nodes Credential (UserID / Password)
Ada ada.tamu.edu 8 (ada1 ~ ada8) NetID / NetID password
Eos eos.tamu.edu 5 (eos1 ~ eos5) Eos_ID / Eos password
Curie curie.tamu.edu 2 (curie1 ~ curie2) NetID / NetID password
Neumann neumann.tamu.edu 4 (neumann1 ~ neumann4) NetID / NetID password
Crick crick.tamu.edu 1 (crick1) NetID / NetID password

Access from Windows

Using MobaXterm (Recommended)

THIS PAGE IS UNDER CONSTRUCTION

Using PuTTY

THIS PAGE IS UNDER CONSTRUCTION

Access from MacOS

Using the Terminal Program

Find the Terminal program under Applications->Utilities.

On your Mac click the Finder Finder.png icon to start finder:

  1. Select Applications App-icon.jpg
  2. Double click the Utilities folder
  3. Double click the Terminal utility Term-icon.jpg
  4. A Terminal window will now appear.
  5. Connect to the cluster using SSH.

Remote Display of Programs with Graphical Interfaces

The recommended X-Windows emulator for Mac OS X is Apple X11, which is available free from Apple.

  1. After X11 is installed on your system, start Apple X11.
  2. A xterm window should appear on your screen.
  3. Login to a UNIX machine (example: ada.tamu.edu).
    ssh -X netID@ada.tamu.edu
    The -X option tells SSH to allow programs to forward and display their graphical interfaces. This is known as X11 forwarding.
  4. To verify that X11 forwarding is working, type the following command:
    xterm
    If a new xterm terminal window for the remote system pops up, then X11 forwarding is working correctly.


Access from Linux/Unix

OpenSSH is an SSH v1.x and v2.x compliant SSH package that is available for many Linux and Unix operating systems and is " ...freely usable and re-usable by everyone under a BSD license... ". OpenSSH also includes secure copy (scp), which may be used instead of ftp. It is available from:

ftp://ftp.openssh.com/pub/OpenBSD/OpenSSH/portable/.

Using the Terminal

If you are using a UNIX based system (IRIX, Linux, SunOS, etc), open a terminal window and connect to the cluster using SSH.

Remote Display of Programs with Graphical Interfaces

Typically, if you use a graphical login screen to login a Linux or Unix system, then the system is already running a X11 server. You will need to login with SSH to the remote system in a slightly different manner:

ssh -X NetID@ada.tamu.edu

The -X option tells SSH to allow programs to forward and display their graphical interfaces. This is known as X11 forwarding. To verify that X11 forwarding is working, type the following command:

xterm

If a new xterm terminal window for the remote system pops up, then X11 forwarding is working correctly.

Off-campus Access

For connecting to cluster login nodes from outside the campus, you need to activate Virtual Private Network (VPN) first, then initiate SSH connection to the cluster login nodes. You can find VPN installation instructions from TAMU ServiceNow Knowledge Base page on VPN.