[Engine-devel] Adding VNC support

Andrew Cathrow acathrow at redhat.com
Tue Jul 31 12:49:32 UTC 2012



----- Original Message -----
> From: "Itamar Heim" <iheim at redhat.com>
> To: snmishra at linux.vnet.ibm.com
> Cc: engine-devel at ovirt.org
> Sent: Tuesday, July 31, 2012 2:18:50 AM
> Subject: Re: [Engine-devel] Adding VNC support
> 
> On 07/26/2012 05:36 PM, snmishra at linux.vnet.ibm.com wrote:
> >
> > Hi,
> >
> >     I am looking at adding VNC support in ovirt. What does the
> >     community
> > think? Ideas, suggestions, comments?
> 
> so to sum this up:
> 1. there is the new dialog to open vnc manually.
> http://gerrit.ovirt.org/#/c/4790/
> 
> 2. Alon suggested it should be allowed to open this dialog for spice
> as
> well, not only for vnc.
> 
> 3. Alon also suggested to have a launch button on that window (or
> parallel to it) which will try to launch vnc or spice by returning a
> specific mime type response, allowing client to choose the vnc/spice
> client to run for this mime type, and passing command line parameters
> to
> it in the mime type reply.
> 
> 4. provide a vnc xpi/activex wrappers to allow launching it via web
> browsers like spice
> main limitation of this compared to novnc is you need to do this for
> every browser/platform.
> 
> 5. novnc
> 5.1 novnc client - i'd start with the one recently pushed to fedora.
> https://bugzilla.redhat.com/show_bug.cgi?id=822187
> 
> 5.2 novnc websocket server - i see three options
> 
> 5.2.1 extend qemu to do this, so novnc can connect to it directly
> like
> we do today for vnc/spice

One of the requirements we want to eliminate is the need for clients to connect directly to the hypervisor.
I think the novnc server should be externally hosted not part of qemu

> 
> 5.2.2 use the python based one from:
> https://bugzilla.redhat.com/show_bug.cgi?id=822187

+1 


> 
> 5.2.3 look at a java based websocket solution, assuming easier to
> deploy
> it as part of webadmin/user portal war than another service (requires
> a
> bit of research)
> looking forward user portal and webadmin would be deployed on
> multiple
> hosts, so a websockets would need to be deployed next to them.
> 
> from the little i looked at, the various websocket implementations
> are
> mostly nascent and are not scaleable/robust/etc.
> I'd love to be proven wrong, and worth playing with them a bit to
> measure that.
> 
> 6. spice.html5
> while very nascent - worth mentioning on this thread and trying to
> take
> a look:
> http://www.spice-space.org/page/Html5
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> 



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