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

[Gianluca Cecchi]

On Fri, Sep 18, 2015 at 10:22 AM, Luca Bertoncello <
L.Bertoncello at queo-group.com> wrote:

> Hello Gianluca,
>
> > You should also RTFM sooner or later.... ;-)
> > http://www.ovirt.org/OVirt_Administration_Guide
> >
> > In particular for this HA related concepts:
> >
> http://www.ovirt.org/OVirt_Administration_Guide#Virtual_Machine_High_Availability_Settings_Explained
> > and
> > http://www.ovirt.org/OVirt_Administration_Guide#Host_Resilience
>
> Really, I don't think this documentation is good...
> I read this page many times and try to understand how the program works,
> but I have many doubt...
>


The documentation pages are contributed, so you are encouraged to ask for a
login and modify them when you have clarified the related aspects, so that
the learning curve could be shorter for others.
See the bottom of the page with "Log in / create account
<http://www.ovirt.org/index.php?title=Special:UserLogin&returnto=OVirt+Administration+Guide>
"



>
> In particular, the link you sent about HA: of course I read them and I
> configured the VMs with these settings, but really, I can't understand how
> can I set more host as a Cluster allowing automatically migration of the
> VMs when a host dies...
>
> Regards
>
>
>
Really? in the main page you have also:
High Availability Considerations

A highly available host requires a power management device and its fencing
parameters configured. In addition, for a virtual machine to be highly
available when its host becomes non-operational, it needs to be started on
another available host in the cluster. To enable the migration of highly
available virtual machines:

   - Power management must be configured for the hosts running the highly
   available virtual machines.
   - The host running the highly available virtual machine must be part of
   a cluster which has other available hosts.
   - The destination host must be running.
   - The source and destination host must have access to the data domain on
   which the virtual machine resides.
   - The source and destination host must have access to the same virtual
   networks and VLANs.
   - There must be enough CPUs on the destination host that are not in use
   to support the virtual machine's requirements.
   - There must be enough RAM on the destination host that is not in use to
   support the virtual machine's requirements.



What in particular is not clear and need better explanation?

Gianluca
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ovirt.org/pipermail/users/attachments/20150918/e51ca03a/attachment-0001.html>