Wow! Great work! Thank you for sharing.
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Apr 11, 2012 9:52 AM, "John Horne" <john.horne at plymouth.ac.uk> wrote:
Hello,
Using Xymon 4.3.7 the NTP test currently shows a green result if the NTP daemon is running, and red if not. However, what we want to know is if the NTP daemon is running, but not synchronised to any high stratum clock. When this happens the NTP daemon will return time based on the servers own local clock (if so configured), and this will usually be a low stratum value (on RHEL/CentOS this is stratum 10). We don't want this, and want to be warned if it happens.
Attached is a patch which will allow admins to specify at what stratum level the 'ntp' test should turn yellow. If the returned stratum value (from 'ntpdate') is greater than or equal to the given value, then the 'ntp' test will show yellow. If the stratum is not specified, then the ntp test uses the default behaviour (that is, no test of the stratum value).
This does not work if sntp is used. I had a look at this, but it seems that older versions of sntp did not return the stratum value. New versions do, but as far as I can gather sntp is not usually supplied because of licensing problems.
John.
-- John Horne Tel: +44 (0)1752 587287 Plymouth University, UK Fax: +44 (0)1752 587001
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