[Linux-ha-dev] hb report - troubles on 4 node cluster

[Andreas Mather1]

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Hi all,

Please find attached a hb_report for a problem I experienced when
implementing heartbeat.

The environment:
It's an asymmetric 4 node cluster, running heartbeat 2.1.3. All nodes share
a couple of filesystems, all GPFS formatted. Services inlcude WebSphere
(modified RA), DB2 (modified RA), vsftpd (Xinetd), samba, nfs, MCS (self
written RA), IHS and are put in 4 groups (filesvc, mcs, was, db). Dejan is
also familiar with the setup.
OS: SLES 9.3 (x86_64)
hearbeat: build via ./ConfigureMe package


The Problem:
In general, everything works fine (crm_standby works for every node, etc.),
but, when I simulate a power loss of one node (via IBM RSA)*, a cluster
split occurs when this node rejoins. Suddenly, on every node, crm_mon shows
the node it is running on as 'online' while reporting the other nodes as
'OFFLINE'. After 1 - 2 min. the cluster is fully operational again (all
nodes found themself again), but it seems as every resource gets restarted.

Please let me know, if I can provide further information.

Thanks,

Andreas


* Sorry, I forgot to test what happens, when I just stop and start
heartbeat on that node - would be useful too, I think... :(




(See attached file: report_1.tar.gz)

Mit freundlichen Grüßen / Best regards

Andreas MATHER
ESLT - Enterprise Services for Linux Technologies

IBM Austria, Obere Donaustrasse 95, 1020 Vienna
Phone : +43-1-21145/4799
Fax: +43-1-21145/8888
e-mail: andreas.mather at at.ibm.com

IBM Österreich Internationale Büromaschinen Gesellschaft m.b.H.
Sitz: Wien
Firmenbuchgericht: Handelsgericht Wien, FN 80000y
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