[Pacemaker] Pacemaker configuration with different dependencies

[Ivor Prebeg]

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") 

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

* 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

* 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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