Distributed Monitoring - Redundancy

Marc Powell marc at ena.com
Fri Jun 23 19:54:13 CEST 2006



> -----Original Message-----
> From: nagios-users-bounces at lists.sourceforge.net [mailto:nagios-users-
> bounces at lists.sourceforge.net] On Behalf Of Mike Koponick
> Sent: Friday, June 23, 2006 11:52 AM
> To: nagios-users at lists.sourceforge.net
> Subject: [Nagios-users] Distributed Monitoring - Redundancy
> 
> Hello Everyone,
> 
> I'm running Nagios is a distributed environment which is working very
> well. I would like to add a little redundancy to the picture now that
I
> have everything working. ;-)
> 


> The remote servers send data via NSCA to the central server. Would
they
> also have to send a second connection to the secondary server?

Yup. Easy enough to add additional calls to send_nsca in
submit_check_result ala --
        /bin/echo -e "$1\t$2\t$return_code\t$4\n" |
/usr/local/nagios/bin/send_nsca host1 -p 5668 -c
/usr/local/nagios/etc/send_nsca.cfg
        /bin/echo -e "$1\t$2\t$return_code\t$4\n" |
/usr/local/nagios/bin/send_nsca host2 -p 5668 -c
/usr/local/nagios/etc/send_nsca.cfg
        /bin/echo -e "$1\t$2\t$return_code\t$4\n" |
/usr/local/nagios/bin/send_nsca host2 -p 5669 -c
/usr/local/nagios/etc/send_nsca.cfg

(yes, I send results to 3 different Nagios installations)
 
> NDO now sends data to my MySQL server, will the secondary server also
need
> to send data? This opens a can of worms in terms of duplicate data,
etc.

I don't use NDO yet but I can imagine that you would experience
duplication of data unless you had a different DB for your secondary
host and reconciled them some other way.
 
--
Marc

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