libvirt users - Mar 2017 - building virtual desktops with libvirt, KVM, SPICE and GNOME

Can anybody comment on how to host virtual desktops on a headless server
using libvirt and KVM on the server and a SPICE client to access the
virtual desktop?  Is there a standard way of doing this?

I've seen many fragments of information about how to do this but I
didn't come across a single guide describing the entire solution. 
Search engines also return a lot of information about gaining remote
access to a real physical desktop but that is not what I'm looking for. 
I've also come across many real-world scenarios where people are
manually starting VNC server processes for each user on different ports
but I was hoping to find out if there is a more standard way of doing
this now.

When I say "virtual desktop", the type of user experience I'm
thinking
about is that named users can run a SPICE client anywhere and always
connect to the same host/desktop.  E.g. if they leave some windows open,
disconnect, go to another physical machine and reconnect with the same
username they will see the same desktop with the same windows open.

Regards,

Daniel

On Wed, Mar 15, 2017 at 10:26:20AM +0000, Daniel Pocock
wrote:
>
>Can anybody comment on how to host virtual desktops on a headless server
>using libvirt and KVM on the server and a SPICE client to access the
>virtual desktop?  Is there a standard way of doing this?
>
>I've seen many fragments of information about how to do this but I
>didn't come across a single guide describing the entire solution.
>Search engines also return a lot of information about gaining remote
>access to a real physical desktop but that is not what I'm looking for.
>I've also come across many real-world scenarios where people are
>manually starting VNC server processes for each user on different ports
>but I was hoping to find out if there is a more standard way of doing
>this now.
>
>When I say "virtual desktop", the type of user experience I'm
thinking
>about is that named users can run a SPICE client anywhere and always
>connect to the same host/desktop.  E.g. if they leave some windows open,
>disconnect, go to another physical machine and reconnect with the same
>username they will see the same desktop with the same windows open.
>
How is it different to just having VM per user on that host and having
people connect to their VMs (using TLS and passwords, for example, just
to make sure).  Each VM will have its own spice (or VNC) server and
users can connect to them either directly (if there is access and open
ports etc.) or through libvirt (if they are not).  If latter is the
case, you can use ACLs to restrict particular users to connect only to
their machines.
>Regards,
>
>Daniel
>
>
>_______________________________________________
>libvirt-users mailing list
>libvirt-users@redhat.com
>https://www.redhat.com/mailman/listinfo/libvirt-users

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On 20/03/17 08:37, Martin Kletzander wrote:
> On Wed, Mar 15, 2017 at 10:26:20AM +0000, Daniel Pocock wrote:
>> 
>> Can anybody comment on how to host virtual desktops on a headless
>> server using libvirt and KVM on the server and a SPICE client to
>> access the virtual desktop?  Is there a standard way of doing
>> this?
>> 
>> I've seen many fragments of information about how to do this but
>> I didn't come across a single guide describing the entire
>> solution. Search engines also return a lot of information about
>> gaining remote access to a real physical desktop but that is not
>> what I'm looking for. I've also come across many real-world
>> scenarios where people are manually starting VNC server processes
>> for each user on different ports but I was hoping to find out if
>> there is a more standard way of doing this now.
>> 
>> When I say "virtual desktop", the type of user experience
I'm
>> thinking about is that named users can run a SPICE client
>> anywhere and always connect to the same host/desktop.  E.g. if
>> they leave some windows open, disconnect, go to another physical
>> machine and reconnect with the same username they will see the
>> same desktop with the same windows open.
>> 
> 
> How is it different to just having VM per user on that host and
> having people connect to their VMs (using TLS and passwords, for
> example, just to make sure).  Each VM will have its own spice (or
> VNC) server and users can connect to them either directly (if there
> is access and open ports etc.) or through libvirt (if they are
> not).  If latter is the case, you can use ACLs to restrict
> particular users to connect only to their machines.
> 
That would be one solution - is there any standard solution to manage
the ACLs and to route each user's connection to the right machine
without asking each user to remember their machine name?

Is there a way to do this where multiple users are concurrently logged
in to the same virtual server, similar to different XDMCP sessions
started on the same server for different X users?

Regards,

Daniel
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