Redundant Nagios setups...

[Arlen Drina]

As you already have *BSD installed as base server for nagios, and you
need an mechanism when one machine is down,
second to take its rolle and all happy.

I would recommned to take a look into CARP
http://www.freebsd.org/doc/en/books/handbook/carp.html
it is natively devoeloped for OpenBSD but you have it already ported
to FreeBSD. I am using CARP + OpenBSD to set up
redundant pair of firewals and it works perfect.
In case you want one machine to shutdown, it has some problem or what
ever else, second machine take a rolle of master and it works.

Machines should be close to each other (  as they use crossover cable
to be connected for sync interfaces ), and in case you
need to set up some geographical wide redundancy , CARP will not help you.

In case your nagios servers are in same server room, I think CARP can be useful

Nice regards,

Arlen


On Thu, Aug 27, 2009 at 3:08 AM, Mark Gius<mgius at createspace.com> wrote:
> We use two identically configured servers with a shared DRBD
> (http://www.drbd.org/) partition that contains the nagios state/log/config
> files, Linux Heartbeat (http://www.linux-ha.org/), and a role IP address to
> do redundancy.  We can literally yank the plug on one of the servers and
> nagios will be back up in about 10 seconds.
>
> I wouldn't say I suggest this solution (we're doing it because the nagios
> servers also host a number of other services that we want to failover
> automatically) but it does achieve automated redundancy/failover.
>
> -Gius
>
> Janet Sullivan wrote:
>
> Other than the methods described in the official docs
> (http://nagios.sourceforge.net/docs/3_0/redundancy.html) and Merlin
> (http://www.op5.org/community/projects/merlin) are there any other suggested
> solutions for setting up redundant Nagios servers?
>
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