[PVE-User] Fencing in Proxmox HA

Jonathan Schaeffer jonathan.schaeffer at univ-brest.fr
Fri Jun 15 13:43:46 CEST 2012


Hi people,

Can anyone comment on the question I submitted last week ?

- what are the conditions triggering fencing ?
- is there some documentation about the <rg/> configuration ?

Any hint would be welcome.

Thanks,

jonathan

Le 08/06/2012 08:39, Jonathan Schaeffer a écrit :
> Hi list,
> 
> we have a 3 nodes cluster here, connected to a SAN through iSCSI. All
> nodes have opened sessions to the LUNs, and each LUN serves as direct
> disk device for KVM virtual hosts.
> At least, this is were we are heading to.
> 
> One of the questions we could'nt answer through the doc is when the
> fencing of a host takes place.
> 
> The obvious use case we tried out is when one host is not reachable by
> the others anymore. Fencing acts as expected.
> But is there other statuses monitored by the fencing ?
> For instance, I would like to make sure that the physical host running a
> VM has an active session to the LUN. If not, then the VM has to migrate
> offline to another physical host of the cluster.
> Can Proxmox setup such a behaviour ?
> 
> Secondary question : I could'nt find out any extensive documentation
> about the <rg/> configuration in cluster.conf.
> I saw exemples using <service/> tag or <pve/>, is there other
> possibilities ?
> 

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