Ah, okay, brilliant that explains things MUCH better than the docs :) I currently only have 6 hosts and 39 services and can't say it increasing more than 8/100 in the next year, but I'll bear it in mind and perhaps change the two previous service-less hosts then.
Thanks, Andy. Tedman Eng wrote: >> -----Original Message----- >> From: Andy Shellam (Mailing Lists) >> [mailto:[EMAIL PROTECTED] >> Sent: Tuesday, November 07, 2006 8:44 AM >> To: Nagios Users mailinglist >> Subject: Re: [Nagios-users] Using Nagios to monitor >> "service-less" hosts >> >> >> Personally I've not noticed any performance decrease having >> host checks >> set - it's on a moderately spec'd server, and if a gateway >> does go down, >> I know about it almost immediately and can take action. >> >> JOOI, why is it said that a host check degrades performance? >> All it's >> doing is running a command like a service? >> > > Host checks preempt all other check operations, they are not performed in > parallel like service checks are. In a small monitoring environment (less > than a few hundred service checks), this may have little noticable impact. > But if you watch the scheduling queue closely while performing some "host > down" experiments with Nagios 2.0 active host checks enabled, you'll see the > adverse effects firsthand. High service check latency compounds as more and > more hosts are actively checked. > > It's generally a better solution to set up a ping service, even if it's the > only service (if it's responding to a request, then it's considered a > service) > > An good analogy is to think of hosts as "containers" for the services. Host > checks are tests to see if the entire container is missing. > > !DSPAM:37,4551093040411234018522! > > > ------------------------------------------------------------------------- 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
