Re: [vizstack-users] Configuring VizStack - using TurboVNC - Problem]

[Kumar, S. <shr...@hp...>]

Hi Cristi,

Good to see things are working.

I see two ways around your current problem :

- Use the reverse connection feature, accessible using "-c". Use this if you have a public IP address for the system where the TurboVNC client will be run. You'll have to start the TurboVNC client in "listening mode" before you run the script.

- Use port forwarding. Setup an SSH tunnel from your master node to the TurboVNC server session on the rendering nodes. TurboVNC servers use port number (5900+server number). You can do this manually, or by modifying the viz-tvnc script. You'd use the "-N" and "-L" options. E.g., if your TurboVNC session was allocated on 192.168.0.2:1, you could setup an SSH tunnel as follows:

  ssh -N -L <Master Public IP Address>:10000:192.168.0.2:5901 192.168.0.2

Finding a source port to use can be a pain, depending on how many users you have.

Regards
-- Shree

-----Original Message-----
From: Cristi Mocan [mailto:Cri...@ne...] 
Sent: Friday, January 21, 2011 7:52 PM
To: viz...@li...
Subject: Re: [vizstack-users] Configuring VizStack - using TurboVNC - Problem]

Hi Shree,

Related to my last post, I have to say:
-Thank you very much for your help Shree !
-Mission accomplished from this point of view !


Now I have to do one more important thing:

First of all I would like to present my hardware configuration.

I have a cluster that consists:
- node0 (server - master node -SSM)
- node1, node2,..,nodeX (rendering nodes)

I have to mention that my master node is a Virtual Machine and does not have a GPU. The rendering nodes have NVIDIA GTS 8800. All the nodes have
OS: Ubuntu Server 10.04

Node0 has two network interfaces:
-eth0: Internet connection - Public Real IP
-eth1: LAN connection - Static IP: 192.168.0.1

Using Vizstack with viz-tvnc command - the VNC server will start different  desktop sessions on node2,node3...
   192.168.0.2:1 192.168.0.2:2
   192.168.0.3:1
   192.168.0.4....etc

How should I setup the visualization cluster in order to access these desktop sessions remotely using(through) the Master(Server) Public IP ??

Is it possible to make port forwarding ? I am sure you can give me the right solution for this issue.

Thank you very much for your help !

Cheers,
Cristi



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