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Magnetic_dud
Asked: 2020-10-07 13:04:11 +0800 CST

Hide a field in munin graph

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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

munin

2 Answers

  1. Best Answer

    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.

    • 0

  2. 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

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