[ClusterLabs] Fencing with a 3-node (1 for quorum only) cluster

[Andrei Borzenkov]

05.08.2016 02:33, Digimer пишет:
> On 04/08/16 07:21 PM, Dan Swartzendruber wrote:
>> On 2016-08-04 19:03, Digimer wrote:
>>> On 04/08/16 06:56 PM, Dan Swartzendruber wrote:
>>>> I'm setting up an HA NFS server to serve up storage to a couple of
>>>> vsphere hosts.  I have a virtual IP, and it depends on a ZFS resource
>>>> agent which imports or exports a pool.

...

> 
> Note; If you lose power to the mainboard (which we've seen, failed
> mainboard voltage regulator did this once), you lose the IPMI (DRAC)
> BMC. This scenario will leave your cluster blocked without an external
> secondary fence method, like switched PDUs.
> 

As in this case there is shared storage (at least, so I understood),
using persistent SCSI reservations or SBD as secondary channel can be
considered.