I've setup a two-node cluster in sles11 sp1. I use sbd as the stonith
device. Here is my configuration:
#crm configure show
node hbtest01 \
attributes standby="off"
node hbtest02 \
attributes standby="off"
primitive g_app ocf:heartbeat:apache \
operations $id="g_app-operations" \
op monitor interval="10" timeout="20s" \
params configfile="/etc/apache2/httpd.conf"
httpd="/usr/sbin/httpd2-prefork"
primitive ip0 ocf:heartbeat:IPaddr2 \
operations $id="ip0-operations" \
op monitor interval="10s" timeout="20s" \
params ip="192.168.1.28" nic="bond0" cidr_netmask="24" iflabel="0"
primitive r_ping ocf:pacemaker:ping \
operations $id="r_ping-operations" \
op monitor interval="10" timeout="60" \
params dampen="5" multiplier="100" host_list="192.168.2.254"
primitive r_sdb stonith:external/sbd \
operations $id="r_sdb-operations" \
op monitor interval="10" timeout="15" on-fail="restart"
start-delay="15" \
params sbd_device="/dev/sdc1"
group g_apache ip0 g_app \
meta target-role="Started"
clone PING r_ping \
meta target-role="Started"
clone SDB r_sdb \
meta target-role="Started"
location l_conn g_apache \
rule $id="l_conn-rule" -inf: not_defined pingd or pingd lte 0
property $id="cib-bootstrap-options" \
dc-version="1.1.2-2e096a41a5f9e184a1c1537c82c6da1093698eb5" \
cluster-infrastructure="openais" \
expected-quorum-votes="2" \
last-lrm-refresh="1291137636"
#crm_mon
============
Last updated: Tue Nov 30 12:54:45 2010
Stack: openais
Current DC: hbtest01 - partition with quorum
Version: 1.1.2-2e096a41a5f9e184a1c1537c82c6da1093698eb5
2 Nodes configured, 2 expected votes
3 Resources configured.
============
Online: [ hbtest01 hbtest02 ]
Clone Set: SDB
Started: [ hbtest01 hbtest02 ]
Clone Set: PING
Started: [ hbtest01 hbtest02 ]
Resource Group: g_apache
ip0 (ocf::heartbeat:IPaddr2): Started hbtest02
g_app (ocf::heartbeat:apache): Started hbtest02
When I unplugs all the two nic links of hbtest02(using bonding) , I expect
that the resource group g_apache should be taken over to node hbtest01.
But nothing happed. When I re-plug the link , resource g_apache restart on
hbtest02.
And if I set no-quorum-policy to suicide , I found that when I unpluged the
nic links of hbtest02, hbtest01&hbtet02 tried to use sdb stonith to fence
each other and hbtest01 was the lucky one. But the g_apache was still not
be taken over.
Are there any network tiebreaker configuration to determinate which node
should be fenced in this two-node cluster split-brain suitaion? In my case,
since all nic links of hbtest02 is unpluged, the resource should be taken
over by the one with healthy net link.
Thanks
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