[Users] Hypervisor info

[Michal Skrivanek]

On 10 Jan 2014, at 14:18, Sven Kieske wrote:

> Hi,
> 
> I'm not sure, but might this even be an security issue?

I don't think it's serious, it can easily be changed via a hook, there's also an RFE somehwere in queue for this to be configurable directly in UI (not much work, 3.5 perhaps)
and since inside the guest you are not aware of migrations you can't really "trust" that value anyway

> at least you could get an idea of the underlying infrastructure.

well, yes. But in addition in /etc/vdsm/vdsm.id you can define your very own host UUID
but by default yes, after enough runs….

Thanks,
michal

> 
> I'll dig into which infos are furthermore provided
> when I get some time..
> 
> Am 10.01.2014 11:18, schrieb Dan Kenigsberg:
>> On Fri, Jan 10, 2014 at 09:12:39AM +0000, Sven Kieske wrote:
>>> Hi,
>>> 
>>> yeah of course, there are various scripts for that
>>> i. e. http://www.dmo.ca/blog/detecting-virtualization-on-linux/
>>> 
>>> (google is your friend)
>>> 
>>> the (afaik) fastest way to detect ovirt is:
>>> 
>>> dmidecode | grep oVirt
>>> 
>>> but this needs root privileges.
>>> 
>>> HTH
>>> 
>>> Am 10.01.2014 07:41, schrieb Koen Vanoppen:
>>>> Dear all,
>>>> 
>>>> Because of our puppet integration at work, it would like to know if there
>>>> is a way in ovirt to know, from WITHIN a virtual machine, the hypervisor on
>>>> wich the vm is running?
>> 
>> And unfortunately, you can even tell the UUID of the specific host on
>> top of which the VM was first started via
>> 
>>    dmidecode -s system-serial-number
>> 
>> in the guest. This feature is unfortunate, as it cannot really be
>> trusted (it does not update upon migration), and breaks an important
>> abstraction.
>> 
>> 
>> 
> 
> -- 
> Mit freundlichen Grüßen / Regards
> 
> Sven Kieske
> 
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