[Pacemaker] Why location can't work as expected

[david.miao]

On 08/07/2014 03:14 AM, David Vossel wrote:
>
> ----- Original Message -----
>> Hello everyone:
>>
>> my tools version
>> pacemaker: 1.1.10
>> corosync: 1.4.5
>> crmsh-2.0
>>
>> I have 2 nodes node1 and node2, resource agent Test must running on node1,
>> and Test should not run on node2 if node1 is offline. So I do the following
>> config:
>> location TestOnNode1 Test INFINITY: node1
>>
>> If node1 and node2 are both online, Test running on node1.
>> But if node1 is offline, the resource agent Test will be switched to node2.
>> I think that doesn't obey my config. My question:
>> Is that pacemaker's feature? or I have missing some config?
>>
>> I find the following config can work as expected:
>> location TestOnNode1 Test -INFINITY: node2
>> But I think that is not direct .
> Yes, this is expected behavior.
>
> Take a look at the symmetric-cluster option and learn about opt-in clusters here.
>
> http://clusterlabs.org/doc/en-US/Pacemaker/1.1-pcs/html-single/Pacemaker_Explained/index.html#_asymmetrical_opt_in_clusters
>
> -- Vossel
Thanks for your answer.
I found when setting symmetric-cluster=false, the location with score 
 >=0 should be defined,
or resource agent will not run anywhere. Is that correct? And why?
>
>
>> thanks
>> --
>> 宝存科技 david
>>
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>>
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>
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-- 
宝存科技 david