On Wed, 2014-11-12 at 11:12 -0500, m.roth@5-cent.us wrote:

John Horne wrote:

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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.