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

I do not understand your example for forwarding X.

As I replied to David, I managed to access my Windows DomU with VNC and RDP too. And that works perfectly.

But I discovered a little problem : How to know the id value to adding from 5900 base port ?

I read that "xl list" gives the domain_id which is not necessarilythe good value to add (I had just discovered thisjoyousness). Also I read that "ps -ef | grep vnc" gives the value behind the -vnc parameter, but for me this does not work.

The vnclisten parameter : limit remote clients and security ?

I will dig it further but it seems that vncdisplay parameter does not work as expected to define the static port !

So how to know with certaintywhat is the real value to add ?

Le 13/10/2015 10:53, Ian Campbell a Ãcrit :
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 (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).


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
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,
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
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
of "xl help".


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