Re: [Xen-users] [xen4.4] DomU Windows server HVM with xen-tools xl create

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Mon, 2015-10-12 at 19:39 +0200, estebann@xxxxxxxxx wrote:
> It's also my fault. I read the man pages and have not seen the non-sense
> between vnc and console :)
> 
> root@lnj-ubu64:/home/lnj# xl -vvv vncviewer xen-domu-ubuntu
> No protocol specified
> Error: Can't open display: :0.0
> 
> I just realized that for using VNC tool, the X server must be up, but to
> be frank, I do not have sufficient skill in this domain. In fact, my Xen
> host is an headless workstation (my new PC :) ), so no direct display. I
> tried also the xserver-xorg-video-dummy, but with no success and that is
> not the aim of this thread. 

If you are logging into the headless workstation via ssh from a system
running X windows then you can use "ssh -Y user@host" to enable X11
forwarding, then a vncclient running in dom0 should be able to display on
your main machine.

Otherwise you can run a vnc client directly on whichever machine you like
and point it at the Xen dom0. If doing this then you would likely want to:
 * use the vnclisten option to bind to either 0.0.0.0 (everything) or the
   public IP of your dom0
 * use the vncdisplay option to pick a static display number for the VM
   (otherwise if you have multiple VMs then they will get assigned display
   numbers based on what was available when they booted).
 * Check that the dom0 firewall is not blocking the VNC port, which is 5900
   + display number.

You can actually combine the vnclist and vncdisplay into a single vnclisten
with the <address>:<display> syntax (according to the man page, I've not
tried this).

HTH,
Ian.

> 
> That is why, first I want ensure, that I can connect to my HVM DomU from
> console or SSH.
> 
> 
> Le 12/10/2015 14:06, Ian Campbell a Ãcrit :
> > On Mon, 2015-10-12 at 13:57 +0200, estebann@xxxxxxxxx wrote:
> > > Ok, it is confusing... I will try to clarify.
> > > 
> > > When following tutorials I managed to run PV DomU guest (successfull 
> > > tests with Ubuntu, Debian), but for this moment I did not managed to
> > > run 
> > > HVM DomU guest (no Windows and no Ubuntu). So in the first time, I 
> > > suspected a CPU incompatibility but this is not the case.
> > > 
> > > So, I can create an Ubuntu HVM DomU, but a simple terminal access,
> > > shows 
> > > me that is does not work completely.
> > > 
> > > root@lnj-ubu64:/home/lnj# xl -vvv vncconsole xen-domu-ubuntu
> > > command not implemented
> > > xc: debug: hypercall buffer: total allocations:6 total releases:6
> > > xc: debug: hypercall buffer: current allocations:0 maximum
> > > allocations:1
> > > xc: debug: hypercall buffer: cache current size:1
> > > xc: debug: hypercall buffer: cache hits:5 misses:1 toobig:0
> > > 
> > > I have no 'vncconsole' parameter in xl tool. Wrong version ?
> > Sorry, I should have said "xl vncviewer", my mistake.
> > 
> > BTW, you can find the list of commands in the xl manpage, or in the
> > output
> > of "xl help".
> > 
> > Ian.
> > 
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxx
> > http://lists.xen.org/xen-users

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