Lets start with the formatting. This is generally used for printing and
graphing values stored in the RRD files. Full description can be found
here: http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html
So you don't need to leave immediately:
* %#.#lf* - prints numbers like 12345.6789, with optional field width
and precision.
So %5.2lf prints up to 5 charecters before the decimal point, and 2
characters after.
* %s* - place this after *%le*, *%lf* or *%lg*. This will be replaced
by the appropriate SI magnitude unit and the value will be scaled
accordingly (123456 -> 123.456 k).
Now you have a huge discrepancy between the returned value and what is
recorded. I don't know whether the snmpget returning a string data type
would account for the discrepancy, but since I have my temperature
values returned through a command, which has no data type reference, it
wouldn't seem that likely.
Out of curiosity, if you execute "rrdtool info /path/to/rrdfile.rrd",
what gets returned?
NateBell wrote:
Wow! Thanks for the detailed post James. I'm a little lost but let me see if I
can muddle along:
The last value collected by my custom data source according to the perf graph
in Zenoss was 12.96 and according to rrdtool was 1192049100: 1.2960835560e+01
Here's what returns when I do an snmpget:
Code:
$ snmpget -c public -v2c orthanic 1.3.6.1.4.1.2021.8.1.101.1
UCD-SNMP-MIB::extOutput.1 = STRING: 74.41
The format for my data point is still set to: %5.2lf%s
I still haven't found any reference to what that syntax does.
The contents of
$ZENHOME/Products/DataCollector/plugins/zenoss/snmp/HRFileSystemMap.py is
really interesting. I don't completely understand all the code there, but I
think I get the general gist.
Does that give you any insight into what I need to do? If not, I'm happy to
collect more data/evidence on my side. :)
Nate
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