Metrics: Transform Performance Data on Server Side?

General
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Hi,

I’d like to translate metrics server side on check_mk. I have a data value in the range 0 - 100, meaning 100 = “all fine” and 0 = nothing works at all.

Can I transform that into the opposite? So 100 = “100% errors” and 0 = “no errors”?

In practise to calculate:

new_metric_value = 100 - current_metric_value?

Having reviewed the example code in the current checkmk-Version, this maybe possibly done by using the scale attribute. But I’m not sure about how to fill in the calculation.

Of course, I could change the data output from the agent itself, but then I loose the history. So I prefer what I described here, since the data already contains what is necessary.

Thanks for any help.

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