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Hi Paul,
My first thought was that this would/could compound arp issues, but
after extended pondering, I don't believe that it will cause any more
problems than those that may have already existed. I'm pretty sure that
Well, adding a service does never imply adding a MAC. The MAC is on most
often on physical layer and does cause problems for failover/failback.
The service itself is defined in the kernel and gets only touched if a
packet makes it up there. (roughly speaking...)
heartbeat wouldn't have any problem switching this over, but what
happens on the ethernet switch when only 1 service fails over and the
gratuitous arp is sent out? Will the switch clear all the entries for
the MAC's involved?
In 99.999% there is only one MAC involved in a normal LVS setup, even
with HA. The question with the switch depends on the kind of switch, its
intelligence (driving me nuts sometimes) and the configuration.
Cheers,
Roberto Nibali, ratz
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