High Availabilty with Nagios

[William Leibzon]

On Thu, May 9, 2013 at 2:19 AM, Steve Shipway <s.shipway at auckland.ac.nz> wrote:
> Does anyone have an HA setup for Nagios that works?
>
> I'm thinking of creating a NEB module that will link two Nagios setups, and
> replicate over all status changes, config changes, downtime, comments, etc
> etc and then set the 'standby' Nagios to be checks/notifications disabled
> when in standby mode, and enabled when in active mode.  Then put the two
> behind a failover load balancer (F5, Foundry or apache reverse proxy).

I've thought several times of doing it but never actually get started
although I have it all planned out kinda like you.

In the mean time my HA setup which I've done for several customers
involves config synced using git or svn (script run by cron that
checks if its something new and then restart nagios if config passes
tests). Both servers doing checks but config is such that for one
server all notifications are disabled except for cross-checking of the
other nagios This is achieved by having common template from which all
services are derived and this template is in a file specific to each
server and so one has notifications disabled and the other enabled.
This is not a full HA in a way that if one server dies you have to
execute a script that would enable the other servers for notifications
(this can be done automatically too but I prefer people to do it).

> However this would be too much work if someone else has already found an
> equivalent solution.
>
> I've looked at Merlin but it doesn't seem to do what I'm after (and the
> documentation is practically nonexistant - much the same as the NEB API
> documentation, in fact).  Mod_gearman lets me have redundant checks and
> replicate *active* checks, but not commands, downtime or passive checks.
>
> Does anyone out there have a workable way to get an active/standby or
> active/active Nagios setup?  Would be interested in hearing all ideas...
>
> Steve
>
>
> Steve Shipway
> University of Auckland ITS
> UNIX Systems Design Lead
> s.shipway at auckland.ac.nz
> Ph: +64 9 373 7599 ext 86487
>
>
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------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and 
their applications. This 200-page book is written by three acclaimed 
leaders in the field. The early access version is available now. 
Download your free book today! http://p.sf.net/sfu/neotech_d2d_may
_______________________________________________
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::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null