[Pacemaker] How to make a redundant structure of arbitrator?

[Gao,Yan]

On 03/27/12 11:22, Yuichi SEINO wrote:
> Hi Jiaju,
> 
> Thank you for a reply. I understand the case that a arbitrator have to
> be redundant .
> And I want to ask two questions .
> 
> 1. I think about a satisfied way. Its way is that we make a special
> site of arbitrator.
>     Can this way satisfy?
>     For example, if a running arbitrator node is stop,  this node is
> fail-over to a other node.
> 
> 2. In the case " for example, you have 2 sites, and configure 3 arbitrators",
>     if 1 arbitrators stop, the structure is 2 site and 2 arbitrators.
>     In this case, because the number of instance is an even number,
>     i think that the arbitrator can't stop anymore.
>     Am I correct　think?
IMO, if you could invest one more node for making the arbitrator
redundant, it would be better to let it join the existing one to form a
local cluster. And the amount of booth daemons would still be uneven number.

Regards
  Gao,Yan

> 
> Sincerely,
> Jiaju
> 
> 
> 2012年3月27日11:33 Andrew Beekhof <andrew at beekhof.net>:
>> On Tue, Mar 27, 2012 at 2:34 AM, Jiaju Zhang <jjzhang at suse.de> wrote:
>>> On Mon, 2012-03-26 at 11:50 +0900, Yuichi Seino wrote:
>>>> Hi Jiaju,
>>>>
>>>> I have a question about booth.
>>>> I would like to know if a redundant structure of arbitrator is possible.
>>>> If it is possible, Please tell me how to the approach.
>>>
>>> If I understand the question correctly, you mean that the arbitrator
>>> should be redundant in case it might be down. Well, this can be resolved
>>> by adding more arbitrators, for example, you have 2 sites, and configure
>>> 3 arbitrators.
>>
>> The arbitrator is already redundant isn't it?
>> Because you need a cluster node to fail before an arbitrator failure
>> has any ill-effect.
>>
>>>
>>> Thanks,
>>> Jiaju
>>>
>>>
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> 
> 
> 

-- 
Gao,Yan <ygao at suse.com>
Software Engineer
China Server Team, SUSE.