Issues with Distributed Nagios

[Marc Powell]

> -----Original Message-----
> From: nagios-users-bounces at lists.sourceforge.net [mailto:nagios-users-
> bounces at lists.sourceforge.net] On Behalf Of Jonah Horowitz
> Sent: Wednesday, November 14, 2007 2:45 PM
> To: Nagios Users Mailinglist
> Subject: [Nagios-users] Issues with Distributed Nagios
> 
> Hello all,
> 
> I'm running a distributed nagios installation with about 500 hosts and
> 4000 checks.  Almost all of my checks run at five minute intervals.

Pretty close to the same here...

Passive Service Checks:
	
Time Frame	Checks Completed
<= 1 minute:	669 (17.7%)
<= 5 minutes:	3681 (97.3%)
<= 15 minutes:	3782 (99.9%)
<= 1 hour:	3782 (99.9%)
Since program start:  	3782 (99.9%)


> latency is less than 10 seconds on both of them, but the latency on
the
> central server is really high, 350-650 seconds.  I'm seeing freshness
> timeouts and errors.

How are you measuring the latency on the central server? Nagios doesn't
report it for passive checks AFAIK. Do you see the checks come in to
nsca? Do you see them in nagios.log? Are they timely in both places?
Nsca debug mode might be useful. You really need to determine where the
latency is appearing to give us a better idea of where to help.
 
> The checks are getting submitted, but there seems to be a horrible
> latency between the check result and when the central server gets it.

The OCSP -> send_nsca -> nsca -> nagios.cmd process should be nearly
instantaneous. Do you see nsca processes hanging around on your central
server (besides the daemon)? Do you have nagios reaping external
commands frequently enough? See the command_check_interval setting in
nagios.cfg.

--
Marc

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