[ovirt-users] Network Address Change

[Paul.LKW]

Hi Fabian:
Yes, it is my main concern will the Engine still recognise the node(s) 
as there is no mechanism to knowlege the Engine the change when I change 
the well known ifcfg-... files, and I think it will not detect the 
change automatically
In my case it is just 30 more VMs and I could reinstall the host of 
course but when it is few hundure VMs there should ne great issue using 
oVIrt. However I have to try as just 3 days remaining for the data 
center decommission.

BR,
Paul.LKW



於 12/8/2014 16:04, Fabian Deutsch 提到:
>
> ----- Original Message -----
>> Hi All:
>> To be honest I do not see any config file in the host node
>> /etc/ovirt-node inside, so even I put in the global maintenance mode I
>> still don't know how to change the host to the new IP address.
> Hey Paul,
>
> if you are using oVirt Node (btw what version are you using?), then there are a couple of files, there is
> /etc/default/ovirt
>
> and the well known ifcfg files:
> /etc/sysconfig/netwprk-scripts/ifcfg-*
>
> And some other paths which are handled by vdsm.
>
> And vdsm is actually managing the network configuration when a Node is registered, that means, it can be that any changes to the configuration files get overwritten by vdsm again.
>
> Maybe Toni can say something about this.
>
> And I am also not sure if Engine will still recognize a Node, when you change the IP of the Node, without letting the Engine know about that.
>
> Sandro, do you know how you can tell Engine that the IP of a Node changed?
>
> Greetings
> fabian
>
>> BR,
>> Paul.LKW
>>
>>
>> 於 11/8/2014 20:56, Sandro Bonazzola 提到:
>>> Il 08/08/2014 19:07, Paul.LKW ha scritto:
>>>> Hi All:
>>>> I just has a case, I need to change the oVirt host and engine IP address
>>>> due to data center decommission I checked in the hosted-engine host there
>>>> are
>>>> some files I could change ;
>>>>
>>>> in ovirt-hosted-engine/hosted-engine.conf
>>>> ca_subject="O=simple.com, CN=1.2.3.4"
>>>> gateway=1.2.3.254
>>>>
>>>> and of course I need to change the ovirtmgmt interface IP too, I think
>>>> just change the above line could do the tick, but where could I change
>>>> the
>>>> other host IP in the cluster ?
>>>> I think I have to be lost all the host as once changed the hosted-engine
>>>> host IP as it is in diff. sub net.
>>>> Does there any command line tools could do that or someone has such
>>>> experience could share?
>>> Well, I think you can move the hosts to global maintenance, shutdown the
>>> hosted engine vm, move the first host and the vm to the new network.
>>> After that you should be able to move the other hosts to the new network.
>>> When finished you can exit global maintenance.
>>>
>>> Never tested such scenario so if any other can provide more info and maybe
>>> create a wiki page it would be nice.
>>> Not sure about what happen with the certificates if they've been generated
>>> using ip address instead of FQDN, probably they won't be valid anymore
>>> after the network change.
>>>
>>>
>>>
>>>> Best Regards,
>>>> Paul.LKW
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