[ovirt-users] Automatically migrate VM between hosts in the same cluster

[Alex Crow]

On 17/09/15 14:25, Luca Bertoncello wrote:
> Hi list!
>
> I'm new by oVirt. Right now I configured a Cluster with two hosts and a VM.
> I can migrate the VM between the two hosts without any problem, but what I need is, that the VM automatically migrate if an host is down.
>
> The migration occurs just if I set an host in "Maintenance", but this is not (only!) what I need...
>
> Can someone help me to configure oVirt (3.5) to automatically check the hosts and migrate the VM on host failure?
>
> Thanks a lot!
>
> Mit freundlichen Grüßen
>
> Luca Bertoncello
>

You can't live migrate on a host failure - as the host has gone down and 
all the running VMs on it have as well! It would require clairvoyance to 
enable live migration in that situation.

However you can enable HA in VMs. If the host they are running on fails 
they will be restarted automatically on another host. NB. This 
*requires* power management so the failed host can be fenced.

Alex

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