----- "Patrick Morris" <[email protected]> escreveu:
> shadih rahman wrote: > > List, > > Is there any information as to what is the maximum number of > > services one can run on a single box with single instance of Nagios? > > > I did not find any concrete data on this. > > > > I am running a single instance of nagios on a quad core 2.5 GHZ > > machine with with 4 Gigs of RAM. > > > > I have total of 7359 service check running on this box. I have also > > > ndoutils running on the same box as backend. > > > > My total service checks is going to five fold very soon with a lot > of > > nrpe checks. > > > > Now, my question is should I run multiple instance of nagios on the > > > same box or a single instance will be able to handle about 30000 > > service checks? > > In my experience, you'll run into issues right around 8,000 checks or > > so, depending no output verbosity, on a fairly stock setup. This is > due > to the size of the pipe used to temporarily store check results, at > least on Linux (and you may be seeing it already with your number of > checks). Around that point, even with quite a bit of tuning, the check > > results will fill the pipe in less than a second, which is the minimum > > amount of time I've been able to configure Nagios to flush it. When > that > happens, latencies go through the roof. > > Distributing the checks doesn't solve the problem if you're still > sending the results to a centralized Nagios instance, since one > machine > still needs to process all of them. > > I'm working through this situation now, and it's looking like it may > take a custom kernel with a larger pipe size to handle > it. > > ------------------------------------------------------------------------------ > Return on Information: > Google Enterprise Search pays you back > Get the facts. > http://p.sf.net/sfu/google-dev2dev > _______________________________________________ > Nagios-users mailing list > [email protected] > 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 Shadih, we have a customer running over 20.000 service checks in a single box. The box is 2x Intel Dual-core Xeon 3Ghz with 8Gb RAM. The latency is around 0.7s. The checks are performed between 3min and 5min. They have around 40 simultaneous users. _________________________________________________ Dario B. Bestetti OpServices R. Luciana de Abreu, 471 - Sala 403 Porto Alegre, RS - CEP 90570-060 Fone 55(51)32753588 Mobile 55(51)81518218 Fax 55(51)32753588 Email [email protected] "In God we trust, the rest we monitor ..." _________________________________________________ ------------------------------------------------------------------------------ Return on Information: Google Enterprise Search pays you back Get the facts. http://p.sf.net/sfu/google-dev2dev _______________________________________________ Nagios-users mailing list [email protected] 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
