[Pacemaker] quorum server

[Andrew Beekhof]

On Mon, Mar 2, 2009 at 04:27, Romi Verma <romi3rdfeb at gmail.com> wrote:
> Thanks Andrew and Lars,
> I would like  to understand it bit more. , is there any distance parameter
> here? i mean to say suppose i have two nodes in one room and 1 node in
> adjacent room  , cant i form three nodes openais/pacemaker cluster here.

of course.
i believe the point is that as the distance increases, so does the
number of switches/telcos involved and therefor the probability of a
comms failure is between the two sites is quite high.
as is the latency...

>  i was under impression that as far as multicast ip works , nothing stops us
> in forming a cluster.
>
> Regrards,
>
>
> On Sat, Feb 28, 2009 at 12:04 AM, Lars Marowsky-Bree <lmb at suse.de> wrote:
>>
>> On 2009-02-27T13:38:02, Romi Verma <romi3rdfeb at gmail.com> wrote:
>>
>> > Thanks for reply Andrew,
>> > ok, then how openais-pacemaker cluster handles the cluster whose nodes
>> > span
>> > across multiple sites.
>>
>> This is not currently handled.
>>
>> But deploying a split-site setup with quorumd never worked either; it is
>> not integrated with fencing, and it is impossible to build a working
>> split-site cluster with it. This was, I'm afraid to say, only a 40%
>> implementation of the solution even in heartbeat/CCM land.
>>
>>
>> Having proper split-site support is on the roadmap, as soon as the
>> openAIS integration stabilizes.
>>
>>
>> Regards,
>>    Lars
>>
>> --
>> Teamlead Kernel, SuSE Labs, Research and Development
>> SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg)
>> "Experience is the name everyone gives to their mistakes." -- Oscar Wilde
>>
>>
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>
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