Failover & passive checks
Chris Stankaitis
chris.stankaitis at datawire.net
Fri Feb 11 18:49:38 CET 2005
Jason Martin wrote:
> Has anycome come up with a reliable way of implementing passive
> checks that properly handles a Nagios failover?
>
> I'm looking at using SEC to send passive checks about syslog to
> Nagios. How should I go about handling the situation where my
> Nagios host fails over to another machine? send_nsca doesn't
> have any capability to attempt to detect if Nagios is running on
> the destination host when it transmits, and the 'failure' might
> not be as simple as a machine going down.
>
> The failover machine is in another datacenter, so a simple
> IP-handoff isn't feasible. How has everyone else handled this
> sort if situation?
>
> Thanks,
> -Jason Martin
It may be an idea for your fall-over nagios to execute an event handler
which switches the IP of the main "nagios dns" and reloads your name
servers, your NSCA boxes would hopefully be setup to use DNS rather then
IP for the nsca config, and the boxes would be using your name servers,
so when they lookup the main nagios dns it'll be the failover box.
--Chris
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