[Xymon] Feature - NTP stratum too high - test shows yellow

[Root, Paul]

Nice. I'll have to try that.

Paul Root    - Senior Engineer
Managed Services Systems - CenturyLink



> -----Original Message-----
> From: xymon-bounces at xymon.com [mailto:xymon-bounces at xymon.com] On
> Behalf Of John Horne
> Sent: Wednesday, April 11, 2012 8:52 AM
> To: xymon at xymon.com
> Subject: [Xymon] Feature - NTP stratum too high - test shows yellow
>
> 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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