Munin - how to return unknown value from plugin
Pregunta
I want my munin plugin to report unknown values if the value can't be reported. What do I have to return?
- "nan"
- "-nan"
- nothing at all, just skip returning a value
- "unknown"
- ...?
Nothing works for me.
Background: ntp_offset plugin fails if ntp is not running at all. I want to return unknown value and send an alert message.
Solución
I think the correct value to return is "U".
This is briefly mentioned without explanation in the documentation:
http://munin.readthedocs.org/en/latest/reference/plugin.html#plugin-reference
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