I've just installed Nagios (first time re-using it in a year or so) and a real event occurred; I'm trying to work out the timings.
It looks like the availability report calculates "downtime" as the time between the first hard failure and the first success, whereas I'd define it as the time between the first soft failure that resulted in hard failure, and first success ... indeed, as this was a router going down, I'd say that downtime was the time between the first soft failure of the child service, and the first success of the parent host. Is this all explained or discussed somewhere? In more detail; I have an unreliable router in front of a host, and a number of services on the host. A host service check soft failed at time t, and was then rechecked repeatedly until a hard failure was imminent at time t+18. At t+19 the router was checked, and produced a soft failure, and these repeated until t+38, where a hard failure was declared for both; router DOWN and host UNREACHABLE. Eventually a check succeeded at time t+n. The availability report for these machines now shows outage of (t+38 to t+n); but in this case I think it should be (t+1 to t+n); or at least (t+19 to t+n). Can someone help me figure out why Nagios prefers the more conservative definition? Related to this, I'd like to know the times of the last successful tests, but I can't find that for historical events, only for current ones (I'm on Debian, using the nagios-text package, if that helps). Where should I be looking; or should I be using a different backend? -jim ------------------------------------------------------------------------- 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 http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Nagios-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
