[lvs-users] LVS not not failing over properly

Graeme Fowler graeme at graemef.net
Tue Aug 26 17:11:00 BST 2008


On Tue, 2008-08-26 at 05:16 -0400, James Martin wrote:
> I have a LVS-NAT implementation in the lab that sort of works.
<snip>
> I believe the problem lies in arping, but I'm not sure how to diagnose 
> this.  There are no firewalls between my browser and the lvs, and I'm 
> using a fairly dumb 100mb switch (also tried with a smarter switch).

Aside from the other "this is Redhat's code with which we're not
familiar" comments, I'd hazard a guess that the realservers (ie.
10.11.12.1 and 10.11.12.2) don't see their default gateway moving from
the old director (node) to the new, or there's an iptables setup on
either/both the master and backup nodes which blocks the traffic in,
out, or both.

Either way you may better off asking this question on the Piranha list:

https://www.redhat.com/mailman/listinfo/piranha-list

...although it's pretty quiet over there.

Graeme





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