[Pacemaker] how can i define service so that switch all other services to onother node if one service failed?

[Dan Frincu]

Hi,

On 02/28/2011 02:00 PM, Thomas Elsäßer wrote:
> Dear all,
>
> i have read the clusterbook, but i have not understand how can i
> configure example three services so that if one service failed, all
> three services switch to another node.
>
> Example:
>
> primitive ServiceAmavis lsb:amavis op monitor interval="10" timeout="20s"
> primitive ServiceApache lsb:apache2 op monitor interval="10"
> primitive ServiceCyrus lsb:cyrus2.2  op monitor interval="10" timeout="20s"
>
> what must i configure if i kill example apache process, that switch all
> three to another node?
You need to configure groups so that all resources run together or not 
at all
http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/ch-advanced-resources.html#group-resources
But also take a look at ordering
http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/s-resource-ordering.html#id2003768
and colocation
http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/s-resource-colocation.html#id1993383
And also check whether the init scripts are LSB compliant
http://refspecs.linux-foundation.org/LSB_3.2.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html
And for apache please use the ocf:heartbeat:apache resource agent
http://linux-ha.org/doc/man-pages/re-ra-apache.html

HTH,
Dan
> Thanks
> Thomas
>
>
>
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-- 
Dan Frincu
CCNA, RHCE