Passive monitoring is running slow?

[Thomas Guyot-Sionnest]

On 01/05/07 05:15 PM, Jonathan Call wrote:
> I have set up a distributed monitoring system per the Nagios documentation.
> 
> I initially tested it out by having the distributed server monitor only 24 or so services on about 8 hosts. There didn't seem to be any problems.
> 
> I then cranked it up to 427 services on 81 hosts. I'm watching the distributed server right now and there is hardly any system load but the Service Check Latency seems extremely high:
> 
> Metric			Min.		Max.		Average
> Check Execution Time:  	0.05 sec	1.67 sec	0.701 sec
> Check Latency:		60.40 sec	287.36 sec	184.514 sec
> Percent State Change:	0.00%		0.00%		0.00%
> 
> This is resulting in 50% or less of the service checks completing in the 5 minutes or less timeframe.
> 
> The Central server has had no significant change in performance at all and seems to be receiving and processing everything without difficulty.
> 
> The nsca server on the central server is running with the following arguments:
> /usr/local/sbin/nsca --daemon -c /usr/local/etc/nsca.cfg
> 
> The submit_check_result script on the distributed server is right out of the documentation.

There are many ways to do that; my favorite (obviously since I wrote it
:) ) is using the host and service performance data files as named
pipes, and having a daemon reaping them and batch-sending data to
send_nsca..

The howto is here (and I'll be more than happy to answer your questions
or get your feedback):

http://www.nagioscommunity.org/wiki/index.php/OCP_Daemon

It will require Libevent and the Perl module Event::Lib.

Thomas

-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
_______________________________________________
Nagios-users mailing list
Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null