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In my new server, a sensor for the ACPI plugin reports 0 K (-273.15 C) as temperature. So, the graph is absolutely useless as this temperature (absolute zero, obviously wrong) makes all the other temps to look flat.

According the documentation it's possible to disable a field, by writing

thermal_zone2.graph no

in munin.conf, but it isn't working. How can i disable that graph? Or otherwise force the y axis minimum to 0° C

Magnetic_dud
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2 Answers2

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I couldn't find how to disable that graph, i even tried with a config file in /etc/munin/plugin-conf.d but no luck.

So i just edited the plugin itself.

In /usr/share/munin/plugins/acpi find the command that enumerates the thermal zones,

ATZ=$(find /sys/class/thermal/ -maxdepth 1 -name "thermal_zone*" | sort -V)

In my server, the first thermal zones have invalid values, so i just replaced it with

ATZ=$(find /sys/class/thermal/ -maxdepth 1 -name "thermal_zone[3-6]" | sort -V)

so the plugin only lists the "valid" thermal zones.

Magnetic_dud
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Specifically for the sensors_ plugin, edit or create /etc/munin/plugin-conf.d/sensors.conf and place this in it:

[sensors_*]
  env.ignore_temp3 yes
  env.ignore_temp4 yes
  env.ignore_temp5 yes
  env.ignore_fan5  yes

and include the relevant type/number. Note that running sudo munin-run sensors_temp will still show the value, but running sudo munin-run sensors_temp config will show the following at the end of the output:

temp4.graph no

...and the value will not be graphed

user957165
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