[ovirt-users] Advise needed: building cheap HA oVirt cluster with just 2 physical servers

[Johan Bernhardsson]

On drbd you have one master and use iscsi to share the storage. If the 
master fails it will fail over to the other.

You have one up that will act as the iscsi storage and jump between the hosts.

If you run drbd master master ... Then you might get split brain and that 
is not fun :)


On November 3, 2017 09:04:49 Eduardo Mayoral <emayoral at arsys.es> wrote:

> Just genuinely curious, how do you avoid split-brain situations with a
> 2-node setup (be it drbd, gluster or anything else)?
>
> Eduardo Mayoral Jimeno (emayoral at arsys.es)
> Administrador de sistemas. Departamento de Plataformas. Arsys internet.
> +34 941 620 145 ext. 5153
>
> On 03/11/17 08:40, Johan Bernhardsson wrote:
>>
>> Check on drbd. I have used that to build a cluster for two servers. It
>> need some more work than a three node gluster conf but works well.
>>
>> I even think they have a white paper on how to do it for virtualization.
>>
>> /Johan
>>
>> On November 3, 2017 08:11:04 Artem Tambovskiy
>> <artem.tambovskiy at gmail.com> wrote:
>>
>>> Looking for a design advise on oVirt provisioning. I'm running a PoC
>>> lab on single bare-metal host (suddenly it was setup with just Local
>>> Storage domain) and 
>>> no I'd like to rebuild the setup by making a cluster of 2 physical
>>> servers, no external storage array available. That are the options
>>> here? is there any options to build cheap HA cluster with just 2
>>> servers? 
>>>
>>> Thanks in advance!
>>>
>>> Artem
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>>
>>
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