get_throttled monitoring in Munin

Written by pmd - 14 april 2020 - no comments

Install Munin

https://angristan.fr/monitorer-serveur-linux-munin/

Make a new pluggin

$ sudo nano /usr/share/munin/plugins/getthrottled

#!/bin/sh

#

# Munin plugin for measuring the core temperature of the BCM2835 SoC on a

# Raspberry Pi.

# https://github.com/munin-monitoring/contrib/blob/master/plugins/raspberry-pi/raspi_temp

#

# $ vcgencmd get_throttled

# throttled=0x50000

#

# 111100000000000001010

# ||||             ||||_ under-voltage

# ||||             |||_ currently throttled

# ||||             ||_ arm frequency capped

# ||||             |_ soft temperature reached

# ||||_ under-voltage has occurred since last reboot

# |||_ throttling has occurred since last reboot

# ||_ arm frequency capped has occurred since last reboot

# |_ soft temperature reached since last reboot

#

#

#

#

case $1 in

    config)

        cat <<'EOM'

graph_title Core Throttled

graph_vlabel Core has already throttled since reboot

graph_category sensors

graph_args --base 1000 -l 0

getthrottled.label Throttled since start

getthrottled2.label Currently throttled

EOM

        exit 0;;

esac

echo "getthrottled2.value $(($(/opt/vc/bin/vcgencmd get_throttled | cut -c17-17)))"

echo "getthrottled.value $(($(/opt/vc/bin/vcgencmd get_throttled | cut -c13-14)))"

Then need to make it execuable :

$ sudo chmod +x /usr/share/munin/plugins/getthrottled

Test it as munin user :

$ sudo munin-run getthrottled

If you get that :

$ sudo munin-run getthrottled

getthrottled2.value i

getthrottled.value iz

$ sudo -u munin vcgencmd getthrottled

VCHI initialization failed

Somehow you will need to add munin user in the video group :

sudo usermod -a -G video munin

Or maybe that was that helped :

$ sudo nano /etc/munin/plugin-conf.d/getthrottled

[getthrottled]

user root

Then it will work :

$ sudo munin-run getthrottled

getthrottled2.value 2

getthrottled.value 20

Restart what is necessary :

$ sudo service munin-node restart

Source : http://guide.munin-monitoring.org/en/latest/develop/plugins/howto-write-plugins.html