How do I run GUI on the login server?

A: It’s actually quite simple to do. Follow next steps:

Step 1: at ui[1-3].farm.particle.cz

• start VNC server. For the first time it is necessary to set a password. The password needs to be remembered - it will be required by the VNC client. When VNC server starts running, the display number is shown in the console.

vncserver -localhost

Step 2: at your local computer

• establish SSH tunel - the tunnel will route packets from localhost (at port 5901) to the remote host (at port 590x) through port 22

ssh -f -C -N -L 5901:127.0.0.1:590x username@ui[1-3].farm.particle.cz

where x stands for a display number, at which VNC server is running

• run VNC client

vncviewer localhost:x

where x stands for a display number, at which VNC server is running

Running VNC server can be terminated at ui[1-3].farm.particle.cz with the command:

vncserver -kill x

where x stands for a display number, at which VNC server ran.

In case you are using the OS Windows it is necessary to set up SSH tunnels in Putty (see picture) and then run vncviewer.