realistic system requirements and capacity

[Jason Ahrens]

We have ~3000 service checks in our system. We use a distributed model with
4 FreeBSD Intel boxes doing the actual checks, and a Sun Solaris system
(E420, 3CPU, 4GB memory) collecting all the results and paging.

This configuration works well, when it works. Unfortunately Nagios seems to
have a stability problem on the "master" system and dies frequently. We
upgraded a day or two ago to 1.0b6 hoping for stability improvements but
those hopes were not realized. Different systems produce the same result so
I doubt it's hardware related. As yet, we've been unable to track down *why*
nagios is crashing and we're having a harder and harder time convincing
those in power to stick with it. They're starting to look at other options.

Does anyone know what might be causing our instability here, or how it might
be fixed? It seems to die while processing all the external returns from the
farmed out checks. The last lines in the log file are always something like
this:

[1031774837] EXTERNAL COMMAND: PROCESS_SERVICE_CHECK_RESULT;
[1031774837] Caught SIGSEGV, shutting down...

Jason

--
Jason Ahrens, System Analyst
TELUS Enterprise Solutions
http://www.telus.com


-----Original Message-----
From: ffejes at sears.com [mailto:ffejes at sears.com]
Sent: Thursday, September 19, 2002 8:13 AM
To: nagios-users at lists.sourceforge.net
Subject: Re: [Nagios-users] realistic system requirements and capacity



Hello.  Our Nagios 1.0b4 system currently has ~250 hosts and ~350 services.
We are running on a NetBSD 1.5.2 server with a PII/400MHz CPU and 128MB
RAM.  This machine is also serving HTTP, FTP, and SMB.  Lately the load
average has been hovering around 0.1 and the cpu is virtually idle most of
the time.  I have not fully investigated distributed servers and, for the
moment, simply have a smaller sparc linux machine serving as a hot standby.

Hope this info helps.

--frank



 

                    George Miscioscia

                    <George.Miscioscia at Ticketmaste       To:
"Nagios-Users (E-mail)" <nagios-users at lists.sourceforge.net>      
                    r.com>                               cc:

                    Sent by:                             Subject:
[Nagios-users] realistic system requirements and capacity    
                    nagios-users-admin at lists.sourc

                    eforge.net

 

 

                    09/18/2002 10:59 AM

 

 





To any and all experienced nagios users, what system requirements would you
recommend to run a Nagios install at full capacity, and what would you
consider full capacity before impementing distributed servers? I.E., how
many checks would you recommend one server perform?

thanks,

George Miscioscia
Manager, Internet Systems
Ticketmaster/Citysearch
office (213)739-3521
cell    (310)902-6743



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