[Paraview] A Forward Connection Over two ssh Tunnel

[Huebl, Axel]

Dear Ehsan,

I use a similar setup as Burlen, tunneling twice over a login node to
our cluster's head node.

It also needs `GatewayPorts clientspecified` in the head node's
sshd_config to work with maximum comfort.
Feel free to check our wiki:

https://github.com/ComputationalRadiationPhysics/picongpu/wiki/ParaView

Best,
Axel

On 18.08.2014 22:43, Burlen Loring wrote:
> Hi Utkarsh,
> 
> Sure I can do that.
> 
> Burlen
> 
> On 08/18/2014 01:36 PM, Utkarsh Ayachit wrote:
>> Burlen,
>>
>> Very cool. When you get the chance, mind updating the Wiki?
>>
>> Thanks
>> Utkarsh
>>
>> On Mon, Aug 18, 2014 at 12:37 PM, Burlen Loring <bloring at lbl.gov> wrote:
>>> Hi Ehsan,
>>>
>>> As Utkarsh says you need to use a reverse connection. I suggest ncat
>>> instead
>>> of portfwd because portfwd is a long dead project with no support and
>>> it's
>>> failed to compile on some systems I used. Here's a schematic of the
>>> setup
>>>
>>> [work station]              [  login node    ]      [ compute node ]
>>> [  paraview  ]<-- ssh -R --<[ ncat + ncat -l ]<-----[ pvserver -rc ]
>>>
>>> in more detail:
>>> in your pvsc on the client
>>> ssh -R ${PORT}:localhost:${PORT} ${LOGIN_HOST} ...
>>>
>>> on the login node in a shell script referenced by the client's pvsc:
>>> let LOGIN_PORT=${PORT}+1
>>> ncat -l ${LOGIN_HOST} ${LOGIN_PORT} --sh-exec="ncat localhost $PORT" &
>>> qsub ...
>>>
>>> on the compute node in your batch script
>>> mpirun ... pvserver --reverse-connection --client-host ${LOGIN_HOST}
>>> --server-port ${LOGIN_PORT} ...
>>>
>>> You could skip ncat if you have control over the sshd config, you
>>> need to
>>> enable GatewayPorts.
>>>
>>> Burlen
>>>
>>>
>>> On 08/18/2014 08:18 AM, Utkarsh Ayachit wrote:
>>>
>>> It does boil down to using reverse connection and setting up recursive
>>> tunnels so that the pvserver and tunnel back to the client. See the
>>> following on the need for portfwd and how it could potentially be
>>> helpful here.
>>>
>>> http://www.paraview.org/Wiki/Reverse_connection_and_port_forwarding#Reverse_Connection_over_a_Reverse_ssh_Tunnel_with_portfwd
>>>
>>>
>>> On Mon, Aug 18, 2014 at 11:15 AM, ehsan saei <ehsan.saei at gmail.com>
>>> wrote:
>>>
>>> Dear Utkarsh,
>>> Thanks for your respond. I tried the section : " A forward connection
>>> over
>>> an ssh tunnel "
>>> but it doesn't work. The problem is that I have to ssh to one system and
>>> then ssh to the cluster again and finally I can submit a job. Do you
>>> have
>>> any other suggestions?
>>>
>>> thanks in advance,
>>> Ehsan
>>>
>>>
>>> On Mon, Aug 18, 2014 at 4:29 PM, Utkarsh Ayachit
>>> <utkarsh.ayachit at kitware.com> wrote:
>>>
>>> This may be of help:
>>> http://www.paraview.org/Wiki/Reverse_connection_and_port_forwarding
>>>
>>> Utkarsh
>>>
>>> On Mon, Aug 18, 2014 at 5:52 AM, ehsan saei <ehsan.saei at gmail.com>
>>> wrote:
>>>
>>> Hi all,
>>>
>>> I'm new to paraview. I try to run pvserver on a cluster. The problem is
>>> that
>>> I need to ssh twice to get access to the cluster. To use pvserver I
>>> submit a
>>> job on the cluster and then I run pvserver using the command
>>> "mpirun -np 12 pvserver"
>>> then I pick the name and port from terminal and use it in paraview
>>> client.
>>> but paraview can't find the pvserver. Is there any way to establish a
>>> connection via these two ssh tunnels?
>>>
>>> Thanks in advance,
>>> Ehsan
>>>
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>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Please keep messages on-topic and check the ParaView Wiki at:
>> http://paraview.org/Wiki/ParaView
>>
>> Follow this link to subscribe/unsubscribe:
>> http://public.kitware.com/mailman/listinfo/paraview
> 
> _______________________________________________
> Powered by www.kitware.com
> 
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
> 
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
> 
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/paraview
> 
> 

-- 

Axel Huebl
Diploma Student
Phone +49 351 260 3582
https://www.hzdr.de/crp
Computational Radiation Physics
Laser Particle Acceleration Division
Helmholtz-Zentrum Dresden - Rossendorf e.V.

Bautzner Landstrasse 400, 01328 Dresden
POB 510119, D-01314 Dresden
Vorstand: Prof. Dr.Dr.h.c. R. Sauerbrey
          Prof. Dr.Dr.h.c. P. Joehnk
VR 1693 beim Amtsgericht Dresden

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