[Users] Multiple network interfaces on engine?

[Michael Pasternak]

On 09/23/2013 02:24 PM, René Koch (ovido) wrote:
> 
> On Mon, 2013-09-23 at 14:14 +0300, Michael Pasternak wrote:
>> On 09/23/2013 01:53 PM, René Koch (ovido) wrote:
>>>
>>> On Mon, 2013-09-23 at 12:50 +0200, Rickard Kristiansson wrote:
>>>> Thanks Michael,
>>>>
>>>>
>>>>
>>>> I'm still trying to get my head around this, but I can't see how I
>>>> configure the networks on the engine?
>>>> For nodes and AOI it's OK, but in my case I am running the engine as a
>>>> separate server which is not a node and does not show up as a Host in
>>>> the GUI.
>>>
>>>
>>> Does your engine really need access to the storage?
>>> ovirtmgmt network should be sufficient in most cases.
>>>
>>> You can configure the network of engine using your favorite editor and
>>> edit/create /etc/sysconfig/network-scripts/ifcfg-* files...
>>
>> I'd avoid doing this, changing network config behind the engine's back is
>> not supported and may cause re-config on reboot on which Rickard
>> originally complained.
> 
> I totally agree that configuring the network directly on the hosts
> should be avoided.
> 
> I think I misunderstood the issue of Rickard - I thought he has issues
> configuring network for the engine itself. 

i'm afraid that i'm the one who misunderstood his question :)

> But (after reading your last email with your suggestions) the question
> is how to define logical networks in engine and deploy config on hosts
> (if this is the case please don't do any configuration manually with an
> editor.)
> 
> 
>>
>>>
>>>
>>> Regards,
>>> René
>>>
>>>>
>>>> Or do I need to add the engine as a host in the GUI as well, to be
>>>> able to configure it?
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> ______________________________________________________________________
>>>> Från: "Michael Pasternak" <mpastern at redhat.com>
>>>> Till: "Rickard Kristiansson" <rickard at sanuksystems.com>
>>>> Kopia: users at ovirt.org
>>>> Skickat: måndag, 23 sep 2013 12:21:40
>>>> Ämne: Re: [Users] Multiple network interfaces on engine?
>>>>
>>>>
>>>> On 09/23/2013 12:54 PM, Rickard Kristiansson wrote:
>>>>> Hi,
>>>>>
>>>>> I want to use two network interfaces connected to different networks
>>>> in Engine (3.3), where one is for ovirtmgmt and one is for a separate
>>>> storage network.
>>>>> It works fine for a minute or so after rebooting Engine, but then
>>>> the configuration is changed by Engine, connecting both interfaces to
>>>> bond0 and losing connectivity (as
>>>>> obviously you can't bond those two interfaces when they are
>>>> connected to separate physical networks..).
>>>>> What is the mechanism doing this, 
>>>>
>>>>
>>>> please see this [1].
>>>>
>>>>
>>>> [1] http://www.ovirt.org/Features/Design/Network/SetupNetworks
>>>>
>>>>
>>>>> and it is possible to disable this automatic network bonding on the
>>>> engine so that we can use separate networks on the network
>>>> interfaces..?
>>>>
>>>>
>>>> attaching logs would help, but i guess it happen cause you did not
>>>> saved
>>>> your host network config, i.e when host got rebooted, it performs
>>>> roll-back
>>>> to old config, this is actually disaster recovery mechanism.
>>>>
>>>>
>>>>>
>>>>> Rickard
>>>>>
>>>>> **
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at ovirt.org
>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>
>>>>
>>>>
>>>>
>>>> -- 
>>>>
>>>>
>>>> Michael Pasternak
>>>> RedHat, ENG-Virtualization R&D
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at ovirt.org
>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>>
>>
> 


-- 

Michael Pasternak
RedHat, ENG-Virtualization R&D