<!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 6.5.7638.1"> <TITLE>RE: [Nagios-users] How service and host checks work together?</TITLE> </HEAD> <BODY>  After turning off active host checks, assign a service check of whatever type and frequency you want to use in order to determine host up state. Next, assign a parent for the host configuration of devices _behind_ (logically, from the point of view/route of the monitor host) the parent using the "parents" option. At this point, after either a detected service failure in the gateway device directly, or by a forced parent check if nagios detects a host down behind it, you will end up having the parent gateway device in a dependency chain that is always checked on failure. If it _is_ down, your settings for host alerts based on unreachable and down will be used. For more precise explanation & usage, check the object/template config file docs in your installation or nagios.org. /eli -----Original Message----- From: nagios-users-admin@lists.sourceforge.net on behalf of Danila Kutepkin Sent: Wed 5/3/2006 11:50 PM To: nagios-users@lists.sourceforge.net Subject: [Nagios-users] How service and host checks work together? Hi there! I have some poblem: I user nagios to monitor about 1000 hosts (radio bridges on base stations, routers and switches) with a very big tree of connections (using "parents" in host definition). Now I use active host checks to determine host status (It's very much importaint to me if a host is DOWN or UNREACHABLE (i.e. its parent is DOWN). Since active host checks are not parallelized, when some big base station crashes, about 100-200 units crash too and nagios begins to check host states very slow. To prevent that lag in host cheks and determining of host state I have to migrate from active host checks to active service checks. The question is how to configure nagios to change host status to DOWN or UNREACHABLE after active service check (PING) of this host failed (changed status to CRITICAL). Where can I find info about how active service checks work with host states? ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo <A HREF="http://sel.as-us.falkag.net/sel?cmd=k&kid">http://sel.as-us.falkag.net/sel?cmd=k&kid</A>0709&bid&3057&dat1642 _______________________________________________ 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 </BODY> </HTML>