[ClusterLabs] Antw: Question regarding logging during migration of a resource

Ulrich Windl Ulrich.Windl at rz.uni-regensburg.de
Wed Apr 22 09:56:00 EDT 2015

>>> Detlef Gossrau <detlef.gossrau at enghouse.com> schrieb am 22.04.2015 um 14:38 in
Nachricht <55379659.2010409 at enghouse.com>:
> Hi all !
> I have a question regarding differences in logging during migration of a 
> resource from one node to the other and vice-versa.
> Following scenario:
> Resource tomcat (resTOMCAT) is running on node 1 (apas5x1). I migrate 
> the resource to node 2 (apas5x2) using the following command:
>   crm_resource -f -Q -M --lifetime=PT1M -r resTOMCAT -N apas5x2
> AFAIK for migration a constraint is set on the other node. But I didn't 
> see this in the log (/var/log/messages) on the other node. Furthermore 
> there are no messages logged regarding move of the resource. But 
> nevertheless the migration is working.
> During migration of the resource back to node 1 messages are written in 
> the log (/var/log/messages) regarding removing and adding a constraint 
> and regarding move of the ressource:
> Where is my fault ? What could be the reason for the difference in 
> logging ? Or is my understanding of the logging wrong ?

I guess you should find some messages from lrm about migration, but I found that crmd only is writing some migration messages (in addition to some RAs) like these (pacemaker-1.1.11):

crmd[6446]:   notice: te_rsc_command: Initiating action 108: migrate_to prm_xen_v09_migrate_to_0 on h01 (local)
crmd[6446]:   notice: process_lrm_event: LRM operation prm_xen_v09_migrate_to_0 (call=125, rc=0, cib-update=3180, confirmed=true) ok

You don't see similar?

> Test environment on both nodes:
> OS         : Linux 2.6.32-504.8.1.el6.x86_64
> Cluster SW : pacemaker-cluster-libs-1.1.7-6.el6.x86_64
>               pacemaker-libs-1.1.7-6.el6.x86_64
>               pacemaker-cli-1.1.7-6.el6.x86_64
>               pacemaker-1.1.7-6.el6.x86_64
>               corosynclib-1.4.1-17.el6.x86_64
>               corosync-1.4.1-17.el6.x86_64
> Thnx for any help !
> Regards
> Detlef
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