On 14/06/2013 15:10, Bennett, Jan wrote:
I get this shortly after a NTP client has booted up. Once NTP has been running for a while it goes away.We have implemented a NTP sync check in all of the NRDS checks that we are rolling out right now but I've run into a bit of a snag.I am getting returns of 'Offset Unknown' on all clients. It appears to only happen for a short period of time (30 min or so) and then it will clear its self up for a bit but the issue will always return.From the client that is reporting the unknown offset, I can run the following:# ./check_ntp_time -H localhost NTP CRITICAL: Offset unknown| # ./check_ntp_time -V check_ntp_time v1.4.16 (nagios-plugins 1.4.16) # ntpdc -p remote local st poll reach delay offset disp ======================================================================= =LOCAL(0) 127.0.0.1 10 64 17 0.00000 0.000000 0.96858 *timeserver1 xxx.xxx.xxx.xxx 2 64 17 0.00098 4.956048 0.00580 # /usr/local/nagios/libexec/check_ntp_time -v -H localhost sending request to peer 0 response from peer 0: offset -2.777669579e-07 sending request to peer 0 response from peer 0: offset -2.161832526e-07 sending request to peer 0 response from peer 0: offset -4.009343684e-07 sending request to peer 0 response from peer 0: offset -1.987209544e-07 discarding peer 0: stratum=0 overall average offset: 0 NTP CRITICAL: Offset unknown|In my searches, I noticed a number of people reporting the same issue with the supposed solution being to update your Nagios plugins to 1.4.13. I have done so and am now running 1.4.16 without any change in the service check.Also, I am unable to check a remote NTP server from these clients as they do not have access to the outside world.It has been suggested that the stratum=0 may be the culprit, but I'm not sure of my options here.Any help would be greatly appreciated.
-- Regards, Giles Coochey, CCNP, CCNA, CCNAS NetSecSpec Ltd +44 (0) 7983 877438 http://www.coochey.net http://www.netsecspec.co.uk gi...@coochey.net
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