[CentOS] Keepalived - spurious failovers
John Horne
john.horne at plymouth.ac.uk
Wed Nov 12 16:33:59 UTC 2014
On Wed, 2014-11-12 at 11:12 -0500, m.roth at 5-cent.us wrote:
> John Horne wrote:
> >>
> > They are both virtual servers - so no UPS. Failover communication is
> > over the network.
>
> Um, bingo: are the host systems on UPS's? What happens on the *host*
> systems at 03:56? They don't, perhaps, take snapshots of the guests then?
>
No, no snapshots are taken. As said this is a spurious event which has
happened at 03:56 for the past two nights. However, we ran for a few
days before then with no problems. Before that it happened at something
like 5AM. It does not happen every night, nor at the same time
(usually).
I have set up a couple of cronjobs to check ifconfig and ping the
interface every few seconds. I also have a job that will monitor the
main interface for VRRP traffic since that should show what the priority
value is when a server claims to have received a higher priority from
another server.
John.
--
John Horne Tel: +44 (0)1752 587287
Plymouth University, UK
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