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I am writing a custom munin plugin/graph and it's slightly computationally expensive. It's also unlikely to change much in a few minutes. Is it possible to have this one graph/plugin only update once per hour, and leave the rest of my graphs to update at the usual once per 5 minutes?

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2 Answers 2

I had a similar problem and had the real plugin in cron writing the data every hour to a temp file and then a reading plugin that ran every 5 minutes from munin, but only displayed the last line from the temp file.

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A better way to do it is to change your munin so that graphs are generated on demand, not every five minutes.

This page appears to have an overview: http://waste.mandragor.org/munin_tutorial/munin.html#cgi

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