[Xymon] rrd data capture and multiple tests with missing data

Boldt, David writes:

In a test defined to store 4 values for graphing I am unable to arrange for the storage of the available information if information for any variable is missing.

In many runs of the test not all of the variables will have data.

I've tried:

• omitting the variables where there are no values
• listing the variable without data
• setting the value to NaN for missing data
• setting the value to a number below the rrd "--minimum" for the variable

In all of these cases no data is stored for the interval if any of the variables has no data. (Am using NCV parsing of the status.)

I am able to store and graph the data for all 4 variables if I set missing values to zero, but this provides unsatisfactory looking graphs and incorrect averages.

xymon version 4.3.28 on CentOS 7.

Use SPLITNCV rather than NCV, then use FNPATTERN in graphs.cfg.