The weathermap lines do not require a specific Nagios plugin. Only the provided performance format needs to match one of the cases below:
Percentage usage: four perfdata sets. While the first two sets provide the percentage usage and the second two sets provide the usage in bytes per sec.
One example: inUsage=21103.42%;85;98 outUsage=226363.55%;85;98 inBandwidth=105.52MBs outBandwidth=212.22MBs.
Byte rate usage: needs at least two perfdata sets with the labels "in" and "out" with an empty UOM. It uses the current value and the maximum value to calculate the current percentage usage. The current value should be given as byte rate. The maximum value should provide the network interface bandwidth as bytes per seconds.
One example: in=7196.50566429;;;0;1250000.0 inucast=11.6273564992;;;; innucast=0.017617206817;;;; indisc=0.0;;;; inerr=0.0;0.01;0.1;; out=4044.9635368;;;0;1250000.0 outucast=12.1734899105;;;; outnucast=0.0;;;; outdisc=0.0;;;; outerr=0.0;0.01;0.1;; outqlen=0;;;;.
check from nagiosxi is $USER1$/check_rrdtraf -f /var/lib/mrtg/$ARG1$ -w $ARG2$ -c $ARG3$ -l $ARG4$
You may need to remove the rrd and xml files for the service before new values can be written to the db. Move them out of /usr/local/nagios/share/perfdata/<hostname>/<servicedesc>.[rrd|xml] if needed.
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I've dug into this a bit more and it looks like there would need to be changes made to the plugin code. Researching the Nagvis feature, they recommend using a specific plugin for this:
I have yet to try this myself so can't provide step by step instructions, but it appears promising. Try this plugin instead and let me know if you run into any problems.
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