[Pacemaker] Failover domains?

[Serge Dubrouski]

On Tue, Oct 26, 2010 at 12:24 PM, David Quenzler <quenzler at gmail.com> wrote:
> How about something like...
>
> Cluster with 4 nodes: node1 node2 node3 node4
>
> ResourceA runs only on node1 and node2, never on node3 or node4
> ResourceB runs only on node3 and node4, never on node1 or node2

Just curios, what is the point of building a 4-node cluster in this
case instead of 2 clusters of 2 nodes each?

>
> On 10/26/10, Pavlos Parissis <pavlos.parissis at gmail.com> wrote:
>> On 25 October 2010 19:50, David Quenzler <quenzler at gmail.com> wrote:
>>
>>> Is there a way to limit failover behavior to a subset of cluster nodes
>>> or pin a resource to a node?
>>>
>>>
>> Yes, there is a way.
>>
>> Make sure you have a asymmetric cluster by setting symmetric-cluster to
>> false
>> and then configure accordingly your location constraints in order to have
>> the failover domains as you wish.
>>
>> Here is en example from my cluster where I have 3 nodes and 2 resource
>> group. Each resource group have unique primary node but both of them have
>> shared secondary node.
>>
>> location PrimaryNode-pbx_service_01 pbx_service_01 200: node-01
>> location PrimaryNode-pbx_service_02 pbx_service_02 200: node-02
>>
>> location SecondaryNode-pbx_service_01 pbx_service_01 10: node-03
>> location SecondaryNode-pbx_service_02 pbx_service_02 10: node-03
>>
>>
>> Cheers,
>> Pavlos
>>
>
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-- 
Serge Dubrouski.