[Linux-cluster] CS4 have a splitt-brain-problem in 2-node setup

Deval kulshrestha deval.kulshrestha at progression.com
Mon May 22 10:49:29 UTC 2006

I have also faced similar error, raised this as bug but at last resolved
this in two ways.

1. Network Bonding(more reliable network)
2. Updated fence package.

This worked for my setup, I am using HP-iLO as fencing device.


-----Original Message-----
From: linux-cluster-bounces at redhat.com
[mailto:linux-cluster-bounces at redhat.com] On Behalf Of Falk Hackenberger -
MediaTransfer AG Netresearch & Consulting
Sent: Monday, May 22, 2006 3:27 PM
To: linux-cluster at redhat.com
Subject: [Linux-cluster] CS4 have a splitt-brain-problem in 2-node setup


I try to use the CS4 for managing a 2-node-cluster.
also i have a working fenicing-device (apc-powerswitch).
I think I have found a design-error in the CS4.

If you boot up one node(1) and this node(1) cant reach the other node(2)
node(1) trys to fence node(2).
This is fine...
but if the fencing fails, node(1)
starts his services via rgmanager without to be shure that the other
node is not working.
volia and you have a splitt-brain problem.

any solution for this?

any answer aka "use more hardware" is not a solution I think.

cu falk

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