[mrtg] Advice: monitoring GPS based clock
Dan.McDonald at austinenergy.com
Fri Sep 2 18:51:34 CEST 2011
We have some ntp clocks that provide snmp monitoring. Unfortunately, the
data presented is not structured nicely in a mib:
The format of the string is:
Where N is the number of currently visible satellites , the x,y,z are
specific information about each satellite. X is a unique number associated
with the satellite, Y is the dB loss talking to it, and Z is a flag
indicating whether the time protocol considers the satellite or is just
tracking it for later.
N seems pretty easy to graph. I can use either a ConversionCode parser or a
simple perl script to gather the requisite info.
Building a separate target for each possible value of X (with a value of Y)
seems possible. I¹d then use a routers2.cgi stacked graph to display them.
The negative value is only slightly challenging just an rrdtune and I
should be able to provide the information. I¹m not certain what the max is
I cold probably get away with 1. The minimum is 200.
However, I don¹t know what the possible X values are, so pre-loading that
seems challenging. I think adding targets on the fly in mrtg (by adding
them to the $$targ array) would be a tad challenging.
I¹d appreciate some suggestions.
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