[Pacemaker] Very strange behavior on asymmetric cluster

Serge Dubrouski sergeyfd at gmail.com
Mon Mar 21 13:24:00 EDT 2011

On Mon, Mar 21, 2011 at 11:14 AM, Carlos G Mendioroz <tron at huapi.ba.ar> wrote:
> Serge Dubrouski @ 21/03/2011 13:49 -0300 dixit:
>> On Mon, Mar 21, 2011 at 10:43 AM, Carlos G Mendioroz <tron at huapi.ba.ar>
>> wrote:
>>> Serge Dubrouski @ 21/03/2011 13:10 -0300 dixit:
>>>>> What I am talking about is monitoring (probing) of a resource on a node
>>>>> where this resource cannot be exist.
>>>> As far as I understand that would require a definition of a "quorum"
>>>> node or another special kind of node where resource cannot exist.
>>>> Figuring out a a such role from location/collocation rules seems to
>>>> complex to me. The idea of quorum node was abandoned by long ago in
>>>> favor for some other features/project that Lars mentioned earlier.
>>> There is already a location rule, and a minus infinite value.
>>> Is that value being used dynamically ? If not, that could be used
>>> as a marker for "this (resource) can not possibly run in this node"
>>> so monitoring is not necesary ?
>> It is used dynamically quite often. For example moving resource out of
>> one node creates a such location rule. Does it mean that along with
>> moving resource Pacemaker has to stop monitoring it on the left node?
>> I don't think so.
> Neither do I. That was exactly my precondition :)
> Being that the RA absence is dealt with ok (i.e. no need to
> install the RA to enable pacemaker to do what it needs) then I feel
> it's ok anyway.
> I've seen many times arguments of the kind "if the admin does this,
> then it breaks". I buy no such argument. I'm against systems playing
> smarter than admins.

That's why I prefer UNIX/Linux to Windows. :-)

> --
> Carlos G Mendioroz  <tron at huapi.ba.ar>  LW7 EQI  Argentina
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Serge Dubrouski.

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