libvirt users - Jan 2014 - Re: vnc port/listen address ignored when setting machine?

Hi,
First of all, I hope it's not a big problem - I'm running on Debian, not
Redhat.

To my problem: I'm starting to learn virtualization, libvirt, and
decided to create some test machine. I did it with:
virt-install --name debian-test \
    --os-type=linux \
    --os-variant=debianwheezy \
    --cdrom
/media/media/software/iso/debian-testing-amd64-netinst-2014-01-16.iso \
    --graphics vnc,listen=0.0.0.0,port=20001 \
    --disk pool=default,format=raw,size=20 \
    --ram 2048 \
    --vcpus=2 \
    --network bridge=virbr0 \
    --hvm \
    --virt-type=kvm

Machine starts, but domdisplay shows:
=# virsh domdisplay debian-test
vnc://localhost:14101

When I tried setting it with --grpahics=vnc,...port=40001, I got it to listen
on port 34101 (which is weird anyway, but at least I can change it).

But whatever I do - I can't make it to listen on 0.0.0.0.
I know I can use ssh port forwarding to get to this VNC, but I would very much
prefer to be able to set VNC listen to 0.0.0.0 for at least some of my test
domains.

What am I doing wrong?

Best regards,

depesz

-- 
The best thing about modern society is how easy it is to avoid contact with it.
                                                             http://depesz.com/

On 01/16/2014 04:51 PM, hubert depesz lubaczewski wrote:
> Hi,
> First of all, I hope it's not a big problem - I'm running on
Debian, not
> Redhat.
> 
> To my problem: I'm starting to learn virtualization, libvirt, and
> decided to create some test machine. I did it with:
> virt-install --name debian-test \
>     --os-type=linux \
>     --os-variant=debianwheezy \
>     --cdrom
/media/media/software/iso/debian-testing-amd64-netinst-2014-01-16.iso \
>     --graphics vnc,listen=0.0.0.0,port=20001 \
>     --disk pool=default,format=raw,size=20 \
>     --ram 2048 \
>     --vcpus=2 \
>     --network bridge=virbr0 \
>     --hvm \
>     --virt-type=kvm
> 
> Machine starts, but domdisplay shows:
> =# virsh domdisplay debian-test
> vnc://localhost:14101
> 
> When I tried setting it with --grpahics=vnc,...port=40001, I got it to
listen
> on port 34101 (which is weird anyway, but at least I can change it).
Libvirt's XML and virt-install expect the TCP port, virsh domdisplay shows
the
VNC port, which is the TCP port minus 5900.

For graphics listening on the wildcard address, domdisplay always shows
'localhost'.
> 
> But whatever I do - I can't make it to listen on 0.0.0.0.
What is the address reported by 'netstat -tnp'?

Jan

On 01/16/2014 05:10 PM, Ján Tomko wrote:
> On 01/16/2014 04:51 PM, hubert depesz lubaczewski wrote:
> 
> What is the address reported by 'netstat -tnp'?
Oops, 'nestat -tlnp'.
> 
> Jan
>