On Monday 13 October 2008 07:36:38 Brian Klauss wrote:
> When I disconnect the heartbeat from one of the servers, whether through
> the shutdown of the NIC or by physically removing the cable, the other node
> senses this as a failure and immediately takes over both floating IP
> addresses.  Strangely the node where the heartbeat was removed from also
> acquires both floating IP addresses and therefore causes much grief on the
> network.  I'm at a loss here and this is causing me a lot of headache.  Any
> ideas?

You're deliberatly causing a split-brain by doing this.

The correct way to simulate a node failure is (really) to yank the power 
cables, or otherwise STONITH the node.

If you want to test fail-over between the nodes, you can use the hb_standby 
and hb_takeover commands to perform a graceful fail-over.

Mark.


-- 
Mark Watts BSc RHCE MBCS
Senior Systems Engineer
QinetiQ Applied Technologies
GPG Key: http://www.linux-corner.info/mwatts.gpg

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