Hi,
Thanks for that information, it doesn't appear in the documentation
anywhere.
It will be a little difficult for me to hardcore it like that as I run the
same custom check on different servers and the check sets different
variable names based on slightly different configurations on each server.
Is there an alternative way of achieving this, could an extra parameter
without the whitespace padding be made available?
Alex
On Wednesday, January 8, 2014, W.J.M. Nelis wrote:
Hello,
I think I may have identified a possible bug in xymon. I am currently
running 4.3.12.
I am attempting to define a custom graph using the RRDPARAM variable to
define the graph. The data that is "supplying" the graph is being generated
by a custom check and it stores this data over several rrd files with a
single value in each file.
They key line in my graph definition is:
DEF:p at RRDIDX@=@RRDFN@:@RRDPARAM@:AVERAGE
What appears to be happening is that the different variables names that
represent the different parameters for the graph are different lengths. It
seems that what ends up being supplied to rdd on this line in the graph
definition contains extra white space added into the @RRDPARAM@ part of
the definition line and that these extra whitespaces correspond to the
largest variable name length. It seems to me that the internal data
structure is getting sized to the largest string length and then not
reduced for subsequent smaller strings and it just pads the rest with
whitespace. RRD then gets confused as it is looking for a variable named
"variable1 ", while the rrd file actually contains a variable called
"variable1".
I would love to get the bug fixed as it is preventing some of my graphs
working. Happy to also be told there is a better way to do this. I hope
this makes sense. Happy to provide more info if required.
This is not a bug, it is a feature. When making multi-graphs, and when
using @RRDPARAM@ in de GPRINT-statement, the columns will neatly line up.
The graph definition shows that you have a set RRD's, each containing a
single DS with the same name as the file. Is it possible to give the DS a
fixed name, for instance 'lambda'? If so, you can remove @RRDPARAM@ form
the DEF-line.
Regards,
Wim Nelis.
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