<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7654.12"> <TITLE>RE: [Nagios-users] Large scale installation</TITLE> </HEAD> <BODY>  Doesn't it depend on how often you're performing the checks too? 1000 checks every 10 seconds is harder than 10,000 checks every hour. We have 589 hosts/3619 service on a 2 cpu 2.8GHz xeon with 1GB of ram, which does other things too. The machine is about 8-10 years old. The checks are scheduled every 4 minutes, however only 45% have run in the last 4 minutes. 95% have run in the last 15. This is with nagios2, which has issues like blocking when hosts are down (32 currently are) though. -----Original Message----- From: Randal, Phil [<A HREF="mailto:phil.randal@hoopleltd.co.uk">mailto:phil.randal@hoopleltd.co.uk</A>] Sent: Mon 11/06/2012 4:54 PM To: Nagios Users List Subject: Re: [Nagios-users] Large scale installation What's the spec of your nagios server? We're checking (around) 500 hosts, 4500 active, 5000 passive service with Nagios 3.4.1 in a CentOS 5.8 VM with 2GB RAM, 4 vCPUs, without problems with the help of check_mk /mk_livestatus (<A HREF="http://mathias-kettner.de/check_mk.html">http://mathias-kettner.de/check_mk.html</A>) Also using pnp4nagios and rrdcached and ramdisk for checkresults. Large installation config tweaks, and tuning the check result reaper frequency all help even out the load. Cheers, Phil -- Phil Randal Infrastructure Engineer Hoople Ltd | Thorn Office Centre | Hereford HR2 6JT Tel: 01432 260415 | Email: phil.randal@hoopleltd.co.uk From: Andreas Brandino [<A HREF="mailto:ampranti@gmail.com">mailto:ampranti@gmail.com</A>] Sent: 10 June 2012 13:39 To: Nagios-users@lists.sourceforge.net Subject: [Nagios-users] Large scale installation Hi all, my nagios installation has currently 400+ hosts and around 1400 checks. As the server load grows, delays are appearing. Is any way to move a part of active checks to a second nagios server? And in that case how will these two nagios servers exchange data? If this is feasible can you point me to some documentation? Thank you "Any opinion expressed in this e-mail or any attached files are those of the individual and not necessarily those of Hoople Ltd. You should be aware that Hoople Ltd. monitors its email service. This e-mail and any attached files are confidential and intended solely for the use of the addressee. This communication may contain material protected by law from being passed on. If you are not the intended recipient and have received this e-mail in error, you are advised that any use, dissemination, forwarding, printing or copying of this e-mail is strictly prohibited. If you have received this e-mail in error please contact the sender immediately and destroy all copies of it. <DIV> </DIV> <a href="http://www.bbc.co.uk">http://www.bbc.co.uk</a> This e-mail (and any attachments) is confidential and may contain personal views which are not the views of the BBC unless specifically stated. If you have received it in error, please delete it from your system. Do not use, copy or disclose the information in any way nor act in reliance on it and notify the sender immediately. Please note that the BBC monitors e-mails sent or received. Further communication will signify your consent to this. </BODY> </HTML>