[ovirt-users] VNC console behind NAT

[Michal Skrivanek]

On Sep 22, 2015, at 10:01 , Tomas Jelinek <tjelinek at redhat.com> wrote:

> 
> 
> ----- Original Message -----
>> From: "Alan Murrell" <lists at murrell.ca>
>> To: "users" <users at ovirt.org>
>> Cc: "Tomas Jelinek" <tjelinek at redhat.com>
>> Sent: Monday, September 21, 2015 8:00:26 PM
>> Subject: Re: [ovirt-users] VNC console behind NAT
>> 
>> Quoting "Tomas Jelinek" <tjelinek at redhat.com>:
>> 
>>> Display address override would not help?
>>> http://wiki.ovirt.org/Features/Display_Address_Override
>> 
>> I wasn't aware of that feature, or at least I don't think I was :-)  I
>> must have had that enabled previously when I was able to connect via
>> VNC console through NAT via VNC console.
>> 
>> Is the VNC port that is used different for each host also?  I
>> currently only have one host, and it gives a connection on port 5902.
>> If I added a second host, would it also use 5902 or would the engine
>> assign a different VNC port to it?
> 
> the port is not really deterministic - depends on how many VMs are running and to which you are connected to etc.
> Imagine you have 2 vms on the same host and connect to both of them - they need to listen on different ports.

normally it's sequential on each host, so in small setup like yours you will get the same port on both host

you would need a full proxy. Is websocket proxy & noVNC in browser an option?

> 
>> 
>> The reason I ask is that for a multi-host setup, that could become a
>> bit of an issue if they all use the same port (using different host
>> names is not an issue).  If the same port is used for all hosts, can
>> this be overridden too?
> 
> no, I don't think so. Maybe using some vdsm hook but it is not a nice solution.
> 
>> 
>> If it can't be, then I suppose one solution would be to setup a a TCP
>> proxy and forward port 5902 to it, then let it handle the connection
>> to the correct host based on the host name used.
>> 
>> I hope that makes sense?
>> 
>> Regards,
>> 
>> Alan
>> 
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