[PVE-User] Fencing in Proxmox HA

[Dietmar Maurer]

> One of the questions we could'nt answer through the doc is when the
> fencing of a host takes place.

When corosync (totem) cluster communication fails.

> 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 ?

Yes, you can define groups with rgmanager. But that is not related to fencing.

> 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 ?

see https://fedorahosted.org/cluster/wiki/RGManager

- Dietmar