You can access TERA cluster using the following method

SSH access

TERA SSH services can be access at tera.thaigrid.or.th.

• For Windows - There are many SSH client available on Windows. Here are some free SSH client on Windows.
• Putty
• SSH Secure Shell Client

• For Linux - You can simply use “ssh” command

  ssh your_user_name@tera.thaigrid.or.th

Graphical Access (RDP)

All user can utilize Windows Remote Desktop Client to access TERA graphically, by pointing Remote Desktop Client to “tera.thaigrid.or.th

Type your username and password if a log-in dialog appear. Note that, this dialog may not appear if you use older version of Remote Desktop Client program. Next, you will be prompt again to input your username and password.

Please leave “Sessman-Xvnc” the same. The messaging windows will appear.

Using this mode works in the same manner as Windows RDP. All opened program will remains on the desktop if you close your client program. Once you finish your work in Graphical mode, Please select “Log-out” under “Actions” menu. This will terminate all your session. You will regain new session when you log-in again.

NOTE: This mode is also available on Linux desktop such as Ubuntu Linux or Fedora. You can use “rdesktop” program with procotol of “RDPv5” or alike to connect to TERA.

Graphical access (VNC)

Graphical access to TERA is possible with VNC. However, you’ll need to tunnel VNC connection through SSH. To tunnel connection through SSH, you can use plink program, part of Putty (link above). Below are an example of tunnel creation.

• First, create VNC session on TERA. You need to supply a VNC password if this is the first time that you invoke VNC. Please note the “:1” in picture below. This is your VNC session number.

  

• Create tunnel with:

  plink -N -C -L "5901:localhost:5901" your_account@tera.thaigrid.or.th

  And replace 5901 with 5900 + <your VNC session number>.

  

• Now point your favorite VNC Client, such as UltraVNC, to localhost:<your VNC port number>. This will tunnel your VNC session through SSH to TERA.

  

• By default VNC connection will start TWM when you login. In case of using GNOME environment. You can edit VNC startup configuration.

  vi ~/.vnc/xstartup

  Uncomment the following line

  unset SESSION_MANAGER
  exec /etc/X11/xinit/xinitrc

  Now reconnect VNC session, you will start with GNOME desktop.

• Please make sure to terminate your VNC session once you’re finished with the following command

vncserver -kill :<your session number>

For example

vncserver -kill :2