Accessing ari using x2go

[Predrag Punosevac]

Chirag Nagpal <chiragn at cs.cmu.edu> wrote:

> Hi Yichong
> 
> In my experience, using Jupyter with port tunneling over SSH is a much
> better experience than running a remote browser over X2Go.
> 
> just ssh directly into the machine you want to log into example
> 
> $ssh <username>@bash.autonlab.org
> then
> $ssh <username>@ari
> 


This is the wrong replay. While theoretically he can run 

ssh -Y username at bash.autonlab.org

In practice his network is too slow for it

If you look at X2Go client on the bottom there is an option start a
single application. Pick terminal


> you can then run a jupyter in ari
> 
> Now the hard part is tunneling the port where your notebook is running over
> ssh back to your local machine, which can be made much easier if you have
> an ssh config which includes the ssh proxy server.
> 
> If you want you can stop by tomorrow and I can set it up for you.
> 
> Chirag
> 
> On Thu, Oct 5, 2017 at 9:17 PM, Yichong Xu <yichongx at cs.cmu.edu> wrote:
> 
> > Hi Predrag,
> > Thanks for the reply! Sad to hear about the GUI access. Can you tell me
> > how to launch a terminal through X2GO? I didn???t find it in the session
> > types option. Currently my connection cannot launch and it crashes
> > immediately after launching.
> > Actually my use case is to use jupypter notebook on ari - do you have some
> > advice about how to set this up? I can set up the remote notebook server if
> > I can somehow connect to ari directly through my machine (I guess that is
> > impossible). Thank you very much!
> >
> > *Thanks,*
> > *Yichong*
> >
> >
> >
> > On Oct 5, 2017, at 9:04 PM, Predrag Punosevac <predragp at andrew.cmu.edu>
> > wrote:
> >
> > Yichong Xu <yichongx at cs.cmu.edu> wrote:
> >
> > Hi Predrag,
> > I recently get the attached error image when I try to access ari through
> > x2go and x11 using my Mac. Do you have an idea how this might happen? Thank
> > you very much!
> >
> >
> > Hi Xu,
> >
> > You are not the first and I am sure not the last person who is
> > complaining about X2Go. First I have no idea why it crashed even that I
> > saw icewm (Window Manager you are using) errors in the log. Proper
> > trouble shooting will involve some serious DTrace-ing which is not
> > available on Linux. You could try to launch just a terminal via X2Go
> > client and then type inside matlab which will bring MATLAB GUI.
> >
> > My bigger concern is that we are running out of options for GUI access.
> > Namely X2Go is just an ugly insecure Perl wrapper around NX libraries (
> > compressed ssh -Y in essence). NoMachines the Italian company behind NX
> > protocol went fully proprietary few years ago and I suspect that libnx
> > libraries are no longer properly maintained. We could try to purchase
> > proprietary server license for NoMachines NX and see if it going to work
> > better. I am also concern that X2Go clients don't work properly on
> > certain platforms (primarily OS X). I use quite regularly X2Go from my
> > DragonFly BSD machine at home to connect to the lab and use MATLAB. It
> > works rock solid for me personally.
> >
> > Sadly if we were to run Windows server Microsoft RDP protocol is rather
> > stable.
> >
> > VNC is another "option". However VNC is notoriously insecure and would
> > require lots of open ports to work. It is also supper buggy. I just used
> > it to do some DomU installations on Xen (that is the only possible way
> > to do HVM installation).
> >
> > Best,
> > Predrag
> >
> >
> >
> > Yichong Xu
> > Machine Learning Department, CMU
> > yichongx at cs.cmu.edu
> > 412-652-8309 <(412)%20652-8309>
> >
> >
> >
> >
> >
> >
> 
> 
> -- 
> 
> *Chirag Nagpal* Graduate Student, Language Technologies Institute
> School of Computer Science
> Carnegie Mellon University
> cs.cmu.edu/~chiragn