[Pacemaker] Split brain and STONITH behavior (VMware fencing)
Ariel S
ariel_bis2030 at yahoo.co.id
Wed Oct 29 07:46:52 UTC 2014
Hello,
I'm trying to understand how this STONITH works.
I have 2 VMware VMs (moon1a, moon1b) on two different hosts. Each have 2 nic
assigned: eth0 for heartbeat while eth1 used for everything else.
This is my testing configuration:
node $id="168428034" moon1a
node $id="168428035" moon1b
primitive Foo ocf:heartbeat:Dummy
primitive stonith_moon1a stonith:fence_vmware_soap \
params ipaddr="192.168.1.134" login="foo" \
uuid="42053b22-d3fd-25fe-6fb3-7cb2c7cd2c63" \
action="off" verbose="true" passwd="bar" \
ssl="true" \
op monitor interval="60s"
primitive stonith_moon1b stonith:fence_vmware_soap \
params ipaddr="192.168.1.134" login="foo" \
uuid="4205b986-4426-5de4-1069-b10a77123bc4" \
action="off" verbose="true" passwd="bar" \
ssl="true" \
op monitor interval="60s"
clone FooClones Foo
location loc_stonith_moon1a stonith_moon1a -inf: moon1a
location loc_stonith_moon1b stonith_moon1b -inf: moon1b
property $id="cib-bootstrap-options" \
dc-version="1.1.10-42f2063" \
cluster-infrastructure="corosync" \
stonith-enabled="true" \
last-lrm-refresh="1414565715"
rsc_defaults $id="rsc-options" \
resource-stickiness="200"
The vCenter is at 192.168.1.134 and the uuids taken from a list generated by
fence_vmware_soap.
When I do fencing manually using:
# fence_vmware_soap -z -a 192.168.1.134 \
-l foo -p bar \
-U 4205b986-4426-5de4-1069-b10a77123bc4 \
-o off
from moon1a, as expected the moon1b
(4205b986-4426-5de4-1069-b10a77123bc4) VM
died, so the configuration should be right, I think.
But so far I cant emulate split brain by killing corosync like this:
# killall -9 corosync
My questions:
1. Is my configuration correct?
2. How one cause a split-brain to trigger the expected stonith
behavior?
Thank you,
Ariel
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