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Difference between revisions of "HPRC:Remote Access"

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(Access Using SSH)
(Access Using SSH)
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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]).
 
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 enter:
+
To initiate SSH connection to target cluster's login node, find the hostname and credential (userID/password) info from Table 1 below.  For example, if you are connecting to Ada cluster from a terminal enter:
  
 
<pre>
 
<pre>
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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]. <br>  
 
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]. <br>  
  
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:
+
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:
  
 
<pre>The authenticity of host 'ada (165.91.16.18)' can't be established.
 
<pre>The authenticity of host 'ada (165.91.16.18)' can't be established.

Revision as of 17:34, 8 March 2016

Access Using SSH

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, if you are 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

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 instruction from TAMU ServiceNow Knowledge Base page on VPN.