The piranha-0.8.4-13.el5 package that was part of the 5.4 update breaks Director LVS (I have not tried the update with NAT LVS).<br />
<br />
/var/log/messages complains that:<br />
nanny[19636]: /sbin/ipvsadm command failed!<br />
<br />
In a typical MASTER/SECONDARY LVS server setup 'pulse' on the SECONDARY node will not automatically failover when this issue occurs on the MASTER (tested on a SECONDARY box with working LVS)<br />
<br />
The workaround is to downgrade to piranha-0.8.4-11.el5.
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