I found this in my mailing list archives, while looking for information about check_ntp_peer. As far as I can tell, nobody ever answered you...
I was just looking into this exact problem. If you check the verbose output, you will probably see something like this: 0 candiate peers available warning: no synchronization source found warning: LI_ALARM bit is set I do get valid output from "ntpq -p hostname", however. Apparently, the problems with OS X's NTP are well-known and documented. For example, http://knol.google.com/k/dirk-h-schulz/time-synchronization-ntp-on-mac-os-x/2bcee0ik2900p/18# http://support.ntp.org/bin/view/Support/KnownOsIssues#Section_9.2.5 As a way around this, I thought I would just use check_ntp_time, to compare the xserve's clock against that of the nagios box. However, no luck there either: sending request to peer 0 response from peer 0: offset -0.9300264975 sending request to peer 0 response from peer 0: offset -0.9299369976 sending request to peer 0 response from peer 0: offset -0.9299154976 sending request to peer 0 response from peer 0: offset -0.9298709977 discarding peer 0: stratum=0 overall average offset: 0 NTP CRITICAL: Offset unknown| It seems that OS X is responding as a stratum 0 server, which is a no-no. Also, while fiddling with check_ntp_peer, I noticed that it doesn't seem to accept a port (-p or --port), as the help output suggests it should be able to. Am I crazy? -Keith Message: 24 Date: Thu, 19 Feb 2009 17:13:58 -0500 From: Peter Doherty <dohe...@crystal.harvard.edu> Subject: [Nagios-users] check_ntp_peer unreliable on macs To: nagios-user Mailinglist <nagios-users@lists.sourceforge.net> Message-ID: <8708358f-e3d4-4778-a90d-0c5c533ce...@crystal.harvard.edu> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes I've got Nagios monitoring several Macs, and I'd like to know that NTP is running okay on them, since if the time drifts by a few minutes, Kerberos Authentication stops working. It seems that some of the newest Macs work okay, pretty much any of the Intel Macs running 10.5 Leopard work, but on any of the 10.4 Tiger Macs, I just get " NTP CRITICAL: Server not synchronized, Offset unknown " I'm simply running check_ntp_peer -H localhost Any suggestions on if this can be fixed somehow? Thanks --Peter ------------------------------ -- Keith Erekson Systems Engineer Digirati Consulting erek...@digiraticonsulting.com ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net 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
