---------- Forwarded message ---------- From: stucky <<a href="mailto:stucky101@gmail.com">stucky101@gmail.com</a>> Date: Jun 15, 2007 11:17 AM Subject: Re: [Nagios-users] host-down notification can take 50 mins to be sent To: Jim Avery <<a href="mailto:jim@jimavery.me.uk">jim@jimavery.me.uk</a>> Jim I'm confused 1. Nagios 2.9 comes with flapping turned off globally by default : # Values: 1 = enable flap detection # 0 = disable flap detection (default) enable_flap_detection=0 2. It also comes with check_for_orphaned_services=1 3. Most importantly it comes with a localhost.cfg file that has 2 nested host templates from the start. One called 'generic-host' and one called 'linux-server' which uses 'generic-host' Then it has a host description that uses 'linux-host' so we have 3 levels of recursion right from the start. It does the same thing with service templates. I assume you must not have looked at the defaults at all or just changed it back to just one template. I never used more than one before either but since the default configs suggest it I figured it'd be ok. Anyone else here uses object inheritance with multi-level recursion ? <div> On 6/15/07, Jim Avery <<a href="mailto:jim@jimavery.me.uk" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">jim@jimavery.me.uk</a>> wrote:<div> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> On 15/06/07, stucky <<a href="mailto:stucky101@gmail.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">stucky101@gmail.com</a>> wrote: > Actually, flapping is turned off globally in nagios.cfg and although it's > still turned on in the host template it shouldn't matter right ? No, my understanding is that the global setting overrides everything else (I've never turned it off globally myself though). > I turned it off here as well. Might as well. > 1. How can a host be flapping if it's down ? Flapping can be detected on any change of state down-up or up-down. How it works is documented here: <a href="http://nagios.sourceforge.net/docs/2_0/toc.html" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> http://nagios.sourceforge.net/docs/2_0/toc.html</a> (look under advanced topics). Anyway, from what you're saying, it sounds like flapping isn't your problem. > 2. Are most of you guys on here using flap detection and has it been causing > this kind of problem for anyone ? Well I do, obviously. I guess lots of others do as it is important in preventing getting storms of notifications if a host or service is flapping. If you don't have the f notification option, it can sometimes be confusing to see the notification that a service has gone down, but not get one to show it's come up again. One problem with having flap notifications is that Nagios might detect that the host or service has stopped flapping at any odd hour - if your notifications are going to an on-call pager for example you can end up waking up your on-call engineer unnecessarily. As ever it's up to you to decide what your priorities are. > 3. If it was flapping shouldn't I have seen this in the log? Yes. You'll see it in the alert history for that host (or service). Another thing to try when you get this kind of behaviour is to set check_for_orphaned_services to 1 in the main nagios config file. I've never tried having a template use another template. I'm not saying it shouldn't work, it's just not something I would feel comfortable doing. I'd be interested to hear a definitive answer as to whether that's a good thing to do or not myself as it would come in handy sometimes. cheers, Jim ------------------------------------------------------------------------- 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. <a href="http://sourceforge.net/powerbar/db2/" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> http://sourceforge.net/powerbar/db2/ </a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">Nagios-users@lists.sourceforge.net </a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> https://lists.sourceforge.net/lists/listinfo/nagios-users</a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote></div></div> -- stucky -- stucky