[Pacemaker] Pacemaker configuration with different dependencies

[Andrew Beekhof]

On 17/04/2013, at 6:15 PM, Ivor Prebeg <ivor.prebeg at gmail.com> wrote:

> Hi Andreas, thank you for your answer.
> 
> Maybe my description was a little fuzzy, sorry for that.
> 
> What I want is following:
> 
> * if l3_ping fails on a particular node, all services should go to standby on that node (which probably works fine with on-fail="standby") 

correct

> 
> * if sip service (active/active) fails on particular node, only floating ip assigned should be migrated to other node

colocate ip with sip clone

> 
> * if any of services (active/active), be it database or java container fails, both database and java container should be stopped and floating ip migrated to another node

put all three in a group?

> 
> * failure of sip service should not affect database or java container and vice versa.
> 
> Hope this makes it more clear, not sure that I understood how to achieve dependency tree. 
> 
> Thanks,
> Ivor Prebeg
> 
> On Apr 16, 2013, at 2:50 PM, Andreas Mock <andreas.mock at web.de> wrote:
> 
>> Hi Ivor,
>>  
>> I don't know whether I understand you completely right:
>> If you want independence of resources don't put them into a group.
>>  
>> Look at
>> http://clusterlabs.org/doc/en-US/Pacemaker/1.1-plugin/html/Pacemaker_Explained/ch10.html
>>  
>> A group is made to tie together several resources without
>> declaring all necessary colocations and orderings to get
>> a desired behaviour.
>>  
>> Otherwise. Name your resources ans how they should be spread across
>> your cluster. (Show the technical dependency)
>>  
>> Best regards
>> Andreas
>>  
>>  
>> Von: Ivor Prebeg [mailto:ivor.prebeg at gmail.com] 
>> Gesendet: Dienstag, 16. April 2013 13:53
>> An: pacemaker at oss.clusterlabs.org
>> Betreff: [Pacemaker] Pacemaker configuration with different dependencies
>>  
>> Hi guys,
>> 
>> I need some help with pacemaker configuration, it is all new to me and can't find solution...
>> 
>> I have two-node HA environment with services that I want to be partially independent, in pacemaker/heartbeat configuration.
>> 
>> There is active/active sip service with two floating IPs, it should all just migrate floating ip when one sip dies.
>> 
>> There is also two active/active master/slave services with java container and rdbms with replication between them, should also fallback when one dies.
>> 
>> What I can't figure out how to configure those two to be independent (put on-fail directive on group). What I want is to, e.g., in case my sip service fails, java container stays active on that node, but floating ip to be moved to other node.
>> 
>> Another thing is, in case one of rdbms fails, I want to put whole service group on that node to standby, but leave sip service intact.
>> 
>> Whole node should go to standby (all services down) only when L3_ping to gateway dies.
>>  
>> All suggestions and configuration examples are welcome.
>> 
>> Thanks in advance.
>> 
>>  
>> Ivor Prebeg
>>  
>>  
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> 
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