[mrtg] how plot in red when snmp pooling cannot be done
s.shipway at auckland.ac.nz
Mon Jan 13 21:53:33 CET 2014
> When mrtg cannot reach the target the plot use the last value get and it
> produce an horizontal line until the polling restart.
> Question : how have this plateau in red or how plot zero instead the last
> value ?
If you are using MRTG with RRDTool and the Routers2 frontend, then 'unknown' values default to being shown as a greyout. You can use the options 'unknasprev' to make unknowns show as the previous value (as in native MRTG), or 'unknaszero' to display unknowns as zero.
Otherwise, in Native MRTG, mrtg-rrd and 14all, you can use 'unknaszero' to make unknowns display as zero, instead of the default behaviour (displaying as the last known previous value).
There is now way to make the unknowns display as previous value in a different colour as you ask, without making your own RRDTool command line to generate the graph image.
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