[Pacemaker] Three questions...

[Takenaka Kazuhiro]

 > on-fail=ignore ?

I will try it, but I cannot do that immediately.

Andrew Beekhof wrote:
> On Thu, Mar 19, 2009 at 07:23, Takenaka Kazuhiro
> <takenaka.kazuhiro at oss.ntt.co.jp> wrote:
>> Hello
>>
>>> It is completely dependent on your stonith architecture.
>>> Some devices support a list of hosts which means you only need one
>>> stonith resource.
>> Even if there is a such device, the Pacemaker stonith mechanism
>> provides insufficient support for it. Suppose: how should its plugin
>> instance do when it loses control to one of its target nodes? If a
>> monitor for the instance returns an error code, Pacemaker loses control
>> via it to all of its target nodes at a time.
> 
> on-fail=ignore ?
> 
>> On the other hand, If a
>> monitor for the instance returns a success code, Pacemaker cannot
>> be aware of the trouble. In the later case, when the node that the
>> instance cannot control must be shooted, Pacemaker will request
>> the useless instance to shoot the node.
>>
>> Andrew Beekhof wrote:
>>> 2009/3/16 Romi Verma <romi3rdfeb at gmail.com>:
>>>>> i guess if DC fails then CRM will elect any other node for DC role and
>>>>> then , this new DC  will try to fence the errant node , if it fails to
>>>>> fence
>>>>> then it will choose other node for this fencing task.
>>>>  Andrew could you please confirm the above .
>>> [insert same rant as Lars - this is getting _really_ annoying]
>>>
>>>> one thing more related to stonith design. suppose we have 4 nodes cluster
>>>> so
>>>> do we need 3 stoniths on each node ( to make a node eligible to kill any
>>>> of
>>>> other 3 nodes ) that will lead to 3x4 stoniths or  do we need only  one
>>>> stonith on  each node that will be total 4 stoniths .
>>> It is completely dependent on your stonith architecture.
>>> Some devices support a list of hosts which means you only need one
>>> stonith resource.
>>>
>>>> i experimented this and found that 3 stoniths on each node is required
>>>> but i
>>>> guess it should not be the c ase as CIB has the stonith info so even if
>>>> stonith is not running on a node it shoul be able to  read the stonith
>>>> related info from CIB.
>>>>
>>>> Thanks,
>>>>> Thanks & Regards,
>>>>>
>>>>>> Regards,
>>>>>>
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>> --
>> Takenaka Kazuhiro <takenaka.kazuhiro at oss.ntt.co.jp>
>>
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> 
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-- 
Takenaka Kazuhiro <takenaka.kazuhiro at oss.ntt.co.jp>