[ovirt-users] Sync two Nodes

[Jonathan Baecker]

Thank you for clarification!
Am 02.11.2017 um 20:55 schrieb Arman Khalatyan:
> Ovirt HA means that if you have virtual machine running on the ovirts
> environment(let us say 2 nodes) then if the bare metal gets troubles,
> VM will be restarted on the second one, the failed host must be
> fenced: poweroff/reboot, but the HA model assumes that the both bare
> metal machines are always on and healthy.  if second host is off, then
> simply you dont have HA, you should ask someone  to turn on the second
> host in order to rerun your VMs.:)
> Usually if you turn off the "healthy host"  it does not have any
> information to sync,  the ovirt-engine manages all things.
Ok, then HA is not the right choice.
>
> (Maybe question belongs to the wrong forum?)
> The ovirt does not contain any sync / HA functionality in the data side.
> Maybe you are looking for some ha/failover-file systems like a
> glusterfs(geo-replication) or drbd(real-time replication) or
> zfs: send receive(smart backups+snapshots) or some thing similar.
When I understand your right, then there is no necessary data on the 
nodes, all information have the ovirt engine? My VM images are on a nfs 
share, at the moment.
When one node crashes I can just migrate the VM to the second node? That 
would be wonderful!
> On Thu, Nov 2, 2017 at 8:20 PM, Jonathan Baecker <jonbae77 at gmail.com> wrote:
>> Hello everybody,
>>
>> I would like to sync two nodes, but I want that only one node runs
>> permanently. Only once a week or a month I want to start the second node and
>> sync them again, if this is necessary.
>>
>> What you would recommend for this scenario? oVirt have a HA functions, what
>> I could use, but I thought oVirt brings then maybe errors when one node is
>> always off. I'm wrong here? Or is there other options what works better?
>>
>> Have a nice day!
>>
>> Jonathan
>>
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