On Tue, Apr 24, 2018 at 07:55:43PM -0600, Shawn Heisey wrote:
> I'm hoping to figure out how to make a backup server transition immediately
> to active as soon as the primary server is marked down.  If you need
> additional info, please let me know.

I'm a bit worried because this has been the exact behaviour since day one
we've supported backup servers, and they are used a lot. I really don't
understand how it is possible to end up in the situation you're describing.

Are you certain your server was really marked down when you saw this, and
that you were not just seeing the first state change detection ? I mean,
it's the same function which removes the active server and adds the backup
one at the same time, so unless you're having issues with your long check
delays, I really don't undertstand. Typically with 10s check interval, 3s
fast-inter and 3 retries, it roughly takes 16s to detect and confirm a
state change. With such long delays you have a lot of time to run manual
tests before the servers are seen as up or down. But there could be
something really tricky, it's just that I have no idea what to look for :-/

Willy

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