On Tue, Nov 29, 2016 at 7:00 AM, Sebastian Greco <sgr...@essiprojects.com> wrote:
> Hi Oved! > > That's a perfect explanation. Do we have a release date for 4.1? I'm > currently working with RHV in my production enviroment. > > I may don't have the opportunity to wait for 4.1 to see the light as all > my customers VMs (im a web hoster) run on a non HA cluster as my provider > does not give me access to the IPMI. If anyone knows anyway to workaround > this limitation please do let me know. > Does he give you access to a smart power grid? If so, you can probably use that as a fencing mechanism. If there is no access via IPMI nor power, how can you cycle a stuck host? A not very good workaround is to run the VMs themselves pinned to different hosts with a clustering between them. I think it's a bad idea (wasteful), but it is HA. And in some applications it can be active-active. You can use virtio-SCSI with passthrough to do SCSI based fencing on a shared disk (quorum disk), for example. Y. > Thanks a lot! > > El 28 nov. 2016 9:12 p. m., "Oved Ourfali" <oourf...@redhat.com> escribió: > >> Hi Sebastian >> >> Currently in case a host is not responding, the only way to make sure no >> vms are running on it is to fence it, and we only support fencing through >> power management. >> >> In 4.1 we plan to have limited options for storage fencing. This will >> mean that if a host is not responding then we try to run HA VMs on another >> host. If the host is still up then it will fail, as the non responsive host >> is the one holding the lock. If, however, the host is really dead, then the >> run VM should succeed. >> >> So, a VM should be up and running, but it might run on a host that has >> connectivity issues. >> >> Better than what you have now, but still partial. I guess this might get >> improved during 4.2. >> >> Regards, >> Oved >> >> On Nov 28, 2016 18:29, "Sebastian Greco" <sgr...@essiprojects.com> wrote: >> >>> Hi, >>> >>> Is there any way to have HA in a cluster which hosts have not got >>> configured the "Power Management"? >>> >>> In my scenario I have 2 hosts (v4) on OVH and a hosted-engine to manage >>> them. Thing is that OVH does not allow direct communication with the hosts >>> IPMI interface. IPMI is only available in the "customer area" under a java >>> applet as that interface is connected to a non accesible network. So, >>> having no access to this interface I find myself in a situation in which I >>> lost all my HA functionality :( >>> >>> Any help would be more than welcome. >>> >>> Sebas >>> >>> _______________________________________________ >>> Users mailing list >>> Users@ovirt.org >>> http://lists.ovirt.org/mailman/listinfo/users >>> >>> > _______________________________________________ > Users mailing list > Users@ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > >
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