<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8"> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META NAME="Generator" CONTENT="MS Exchange Server version 6.0.6249.1"> <TITLE>RE: [Nagios-users] host check interval</TITLE> </HEAD> <BODY dir=ltr> <DIV>This is certainly one of those things I wish I could change easily about nagios. It's not uncommon for us to have 20-30 devices down on our statewide network at any given time. This equates to 1-1.5% of the total number of devices we are monitoring. Because of the fact that nagios goes hard and heavy on host failures, I've had to make my check-host-alive command just a null command so that my other checks are not delayed. Allowing a min/max host-check-interval would be a nice addition.</DIV> <DIV> </DIV> <DIV>--</DIV> <DIV>Marc</DIV> <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px"> <DIV>-----Original Message----- From: Dean Bishop [mailto:dbishop@ehvert.com] Sent: Wed 5/21/2003 4:41 PM To: 'Douglas K. Rand'; Nagios-Users Cc: Subject: RE: [Nagios-users] host check interval </DIV> Nope. Host alerts do not have any interval. They are run only if a service check on that host fails. If the service check fails once, and only once, regardless of retry interval and max check, the host is checked using the host's check command. There is no sense in continuing to test the service if the host is down right? When the host is checked, it is check fast and furious. The checks are run at the highest priority above normally scheduled checks. After all, you may have a server down and you would like to know about it right away. Hope this helps, dean -----Original Message----- From: Douglas K. Rand [<A href="mailto:rand@meridian-enviro.com">mailto:rand@meridian-enviro.com</A>] Sent: May 21, 2003 4:14 PM To: Nagios-Users Subject: [Nagios-users] host check interval I'm trying to adjust the interval between host checks, and I'm not having any luck. The directives normal_check_interrval and retry_check_interrval don't work for hosts: Error: Could not add object property in file '/usr/local/etc/nagios/hosts.cfg' on line 13. And while I have host_check_timeout set to 30, it doesn't seem to have any affect. Here is a snippett from my nagios.log: [1053541716] HOST ALERT: Hahn-VPN;DOWN;SOFT;1;CRITICAL - Plugin timed out after 10 seconds [1053541726] HOST ALERT: Hahn-VPN;DOWN;SOFT;2;CRITICAL - Plugin timed out after 10 seconds [1053541736] HOST ALERT: Hahn-VPN;DOWN;SOFT;3;CRITICAL - Plugin timed out after 10 seconds [1053541746] HOST ALERT: Hahn-VPN;DOWN;SOFT;4;CRITICAL - Plugin timed out after 10 seconds [1053541756] HOST ALERT: Hahn-VPN;DOWN;HARD;5;CRITICAL - Plugin timed out after 10 seconds [1053541756] HOST NOTIFICATION: rand;Hahn-VPN;DOWN;host-notify-by-email;CRITICAL - Plugin timed out after 10 seconds [1053541757] SERVICE ALERT: Hahn-VPN;PING;CRITICAL;HARD;1;FPING CRITICAL - 192.168.2.1 (loss=100.000000% ) As you can see, nagios checks the hosts every 10 seconds. And that is too quick for us, we'd like it to check every minute, because with the 10 second interval we get too many host down notifications for our remote systems. The docs say: Also of note - when Nagios is check the status of a host, it holds off on doing anything else (executing new service checks, processing other service check results, etc). This can slow things down a bit and cause pending service checks to be delayed for a while, but it is necessary to determine the status of the host before Nagios can take any further action on the service(s) that are having problems. It isn't clear to me, if it is checking a host, does it hold off on ALL other service checks, or just service checks to that host (and perhaps child hosts)? If it holds off on ALL other service checks, I've got to find another way to do this, I can't have no service checks happening for 5 minutes. ------------------------------------------------------- This SF.net email is sponsored by: ObjectStore. If flattening out C++ or Java code to make your application fit in a relational database is painful, don't do it! Check out ObjectStore. Now part of Progress Software. <A href="http://www.objectstore.net/sourceforge">http://www.objectstore.net/sourceforge</A> _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net <A href="https://lists.sourceforge.net/lists/listinfo/nagios-users">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 ------------------------------------------------------- This SF.net email is sponsored by: ObjectStore. If flattening out C++ or Java code to make your application fit in a relational database is painful, don't do it! Check out ObjectStore. Now part of Progress Software. <A href="http://www.objectstore.net/sourceforge">http://www.objectstore.net/sourceforge</A> _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net <A href="https://lists.sourceforge.net/lists/listinfo/nagios-users">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> </BODY> </HTML>