[ovirt-users] Autostart VMS

[Nir Soffer]

On Fri, Apr 8, 2016 at 7:17 PM, Brett I. Holcomb <biholcomb at l1049h.com> wrote:
> 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.

Why do you care about the order?

Isn't it enough to restart all the vms after a host was restarted?

Nir

>
> On Wed, Apr 6, 2016 at 9:10 PM, Brett I. Holcomb <biholcomb at l1049h.com>
> 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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