[ovirt-users] Autostart VMS

[Brett I. Holcomb]

On Fri, 2016-04-08 at 11:31 +0200, Martin Sivak wrote:
> Hi,
> 
> > 
> > I set highly available on, did not pin to any host, and also set
> > the
> > watchdog which should reset if they go down but I'm not sure that
> > will start
> > them if the host comes up and the VMs are not running.  I'll look
> > at the CLI
> > first.
> The engine will try to keep the VM running. So if one host goes down,
> it will restart the VM on some other host automatically. We will also
> migrate the VM (or some other to free resources) when the current
> host
> gets too loaded. We do not require any migration addons, it just
> works. But of course we have usually more hosts in a cluster to make
> this possible.
> 
> I do not really remember what happens when all hosts are restarted
> (power outage) though as that is quite special case.
> 
> Regards
> 
> --
> Martin Sivak
> SLA / oVirt
Thanks.  I only have one host so who knows what will happen.  I'm
working on a script that will basically emulate what VMware does -
start VMS in a given order at startup of the host/engine.  I'll also
file a feature request.
> On Wed, Apr 6, 2016 at 9:10 PM, Brett I. Holcomb <biholcomb at l1049h.com> wrote:
> > wrote:
> 
> > 
> > On Wed, 2016-04-06 at 13:42 -0400, Adam Litke wrote:
> > 
> > On 06/04/16 01:46 -0400, Brett I. Holcomb wrote:
> > 
> > In VMware we could setup guests to autostart when the host started and
> > define the order.  Is that doable in oVirt?  The only thing I've seen
> > is the watchdog and tell it to reset but nothing that allows me to
> > define who starts up when and if they autostart.  I assume it's there
> > but I must be missing it or haven't found it in the web portal.
> > 
> > 
> > In oVirt guests aren't tied to a host by default (although you can set
> > them to run only on a specific host if you want).  The closest thing I
> > can think of would be the High Availability features (VM->Edit).
> > oVirt will try to restart highly available VMs if they go down.  You
> > can also set the priority for migration and restart in that pane.
> > Hopefully a combination of host pinning and the  high availability
> > settings will get you close enough to where you want to be.
> > 
> > Otherwise, you could always do some scripting with the ovirt REST API
> > using the SDK or CLI.
> > 
> > 
> > If you had the VMware migration extra add-on you could have hosts move as
> > needed so they were not tied to any host either but we could set a startup
> > order and specify auto, manual so that once the host started the VMs were
> > brought up as specified no matter what host they were running on.
> > 
> > I am running hosted-engine deployment with the Engine VM on the host.
> > 
> > I set highly available on, did not pin to any host, and also set the
> > watchdog which should reset if they go down but I'm not sure that will start
> > them if the host comes up and the VMs are not running.  I'll look at the CLI
> > first.
> > 
> > It would be nice if oVirt added this feature as it's really required for
> > large installations and is a help for any size installation, even small
> > ones.
> > 
> > 
> > 
> > 
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> > 
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> > 
> > 
> > 
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