On Mar 13, 2009, at 5:25 PM, Keith Erekson wrote: > 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
Yeah, after a little more diagnostic work I eventually concluded that it was just OS X's implementation of NTP that is just broke. It seems to be in sync for a while, then it just forgets it for a while, and eventually, maybe it'll sync up again. Maybe they'll fix that for 10.6 this year. --Peter ------------------------------------------------------------------------------ _______________________________________________ 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
