[one-users] attach console or VNC viewer to VM

[knawnd at gmail.com]

Hi!

Is there any way to attach console or vncviewer to VM if VM has no X and 
VNC server installed inside? I need that to debug VM network issue.
If VM template has a part as below:
GRAPHICS = [
   TYPE    = "vnc",
   LISTEN  = "localhost",
   PORT    = "5901"]

what command and what host (front-end or cluster node) should I use to 
be attached to VM?

Thanks!
Nikolay.