[ovirt-users] oVirt HA.

[Kapetanakis Giannis]

On 29/04/15 10:39, Sven Kieske wrote:
>
> On 28/04/15 16:20, Dan Yasny wrote:
>> HA does not mean multiple running instances of the same service. It means
>> if the service is gone, it will automatically be restored on a working
>> server.
> That is a pretty narrow definition of HA, which is not shared by
> most parts of the community (and the world), leading to much confusion
> of users on this very ML.
>
> HA in general means your service downtime gets minimized, today mostly
> realized through load balancing and clustering software services.
>
> just restarting a service (in this case ovirt-engine vm) on a different
> host is not what todays user expect under the term "HA" imho.
>
> in theory it should be possible as a design goal to make multiple
> ovirt-engine share one remote data base (remote database support is
> already there).
>
> I think this would be a huge feature for ovirt, but also requires quite
> some design and coding to be done.
>
> thus adding the devel list.
>

If ovirt-engine restarts this does not mean that you have a downtime in 
your service.
The VMs and nodes already running will not be affected...

So your infrastructure will still be operational while you restart the 
engine.

G