Nagios Support Forum

I have numeric data in that changes frequently and I need to monitor and see if the values fall below a certain threshold. Currently the data will be curled from a website into a file, but it could be written to a db instead. As part of this I would like to be able to monitor the data over time, so I am looking for a plugin that also allows the graphing that is included in Nagios XI.
I have seen check_rate as well as several log checking plugins that are indicative of what I would like to do, but none seem to be able to capture the actual data I am looking for.
Is this something that I will need to develop or is there a plugin out there that will work do this?

All the nagios graphing is done from RRDs (round robin databases). These files should be considered "lossy" aggregates averaged over time, loosing granularity the further you travel into the past. If the data you wish to record is still useable for your purposes knowing those restrictions above, then nagios rrd perfdata would be a fine mechanism for historical storage of said data.

You will also most likely need to write a script to pull of what you want. See The Nagios Development Guidelines.

Thank you I am building something based off another plugin.