Created tasmota plugin that reads power monitoring devices such as tasmota switches
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Tim Connors
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#!/bin/sh
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#
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# Copyright (C) 2019-2022 Tim Connors
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# GNU Library General Public License v2 or later
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#
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#
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# munin plugin that logs voltage, energy usage, power, power factor and current logged from tasmota power switches
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#
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# To install the plugin, copy or move the plugin to /usr/share/munin/plugins/ set
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# the chmod to 755 and create a symbolic link:
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# ln -s /usr/share/munin/plugins/tasmota_ /etc/munin/plugins/tasmota_hostname_voltage
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# ln -s /usr/share/munin/plugins/tasmota_ /etc/munin/plugins/tasmota_hostname_energy
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# ln -s /usr/share/munin/plugins/tasmota_ /etc/munin/plugins/tasmota_hostname_power
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# ln -s /usr/share/munin/plugins/tasmota_ /etc/munin/plugins/tasmota_hostname_powerfactor
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# ln -s /usr/share/munin/plugins/tasmota_ /etc/munin/plugins/tasmota_hostname_current
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#
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# Plugin also implements suggests, so if you have /etc/genders
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# populated with "tasmota,powermon" flags for those tasmota devices
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# that implement energy monitoring, and nodeattr installed, you can
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# run an ansible play like this to set up your links:
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# https://github.com/spacelama/ansible-initial-server-setup/tree/master/roles/monitoring/tasks
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#
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#%# family=auto
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#%# capabilities=autoconf
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SWITCH=$(basename "$0" | cut -d_ -f2)
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FUNCTION=$(basename "$0" | cut -d_ -f3)
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if [ "$1" = "autoconf" ]; then
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echo yes && exit 0
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fi
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if [ "$1" = "suggest" ]; then
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nodeattr -n 'tasmota&&powermon' | while read device ; do
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for i in voltage power powerfactor current energy; do
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echo "${device}_${i}"
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done
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done
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exit
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fi
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voltage() {
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if [ "$1" = "config" ]; then
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echo "graph_title Tasmota Voltage: $SWITCH"
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echo "graph_category sensors"
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echo "graph_vlabel Volts"
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echo "graph_args --base 1000 -l 0"
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echo "Volts.label Volts"
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exit 0
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else
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res=$( curl -fsS --data-urlencode "cmnd=Status 8" http://$SWITCH/cm )
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volts=$( echo "$res" | jq -c '.StatusSNS.ENERGY.Voltage' )
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echo Volts.value $volts
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fi
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}
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current() {
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if [ "$1" = "config" ]; then
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echo "graph_title Tasmota Current: $SWITCH"
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echo "graph_category sensors"
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echo "graph_vlabel Amps"
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echo "graph_args --base 1000 -l 0"
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echo "Current.label Current"
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exit 0
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else
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res=$( curl -fsS --data-urlencode "cmnd=Status 8" http://$SWITCH/cm )
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current=$( echo "$res" | jq -c '.StatusSNS.ENERGY.Current' )
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echo Current.value $current
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fi
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}
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power() {
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if [ "$1" = "config" ]; then
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echo "graph_title Tasmota Power: $SWITCH"
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echo "graph_category sensors"
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echo "graph_vlabel Watts"
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echo "graph_args --base 1000 -l 0"
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for i in Power ApparentPower ReactivePower ; do
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echo "${i}.label $i"
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echo "${i}.type GAUGE"
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echo "${i}.min 0"
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done
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else
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res=$( curl -fsS --data-urlencode "cmnd=Status 8" http://$SWITCH/cm )
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for i in Power ApparentPower ReactivePower ; do
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power=$( echo "$res" | jq -c '.StatusSNS.ENERGY.'$i )
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echo $i.value $power
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done
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fi
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}
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powerfactor() {
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if [ "$1" = "config" ]; then
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echo "graph_title Tasmota Power factor: $SWITCH"
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echo "graph_category sensors"
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echo "graph_vlabel Power Factor"
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echo "graph_args --base 1000 -l 0"
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echo "PowerFactor.min 0"
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echo "PowerFactor.max 1"
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echo "PowerFactor.label Power Factor"
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exit 0
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else
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res=$( curl -fsS --data-urlencode "cmnd=Status 8" http://$SWITCH/cm )
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powerfactor=$( echo "$res" | sed 's/.*"Factor":\([0-9.]*\)[^0-9.]*.*/\1/' )
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echo PowerFactor.value $powerfactor
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fi
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}
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energy() {
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if [ "$1" = "config" ]; then
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echo "graph_title Tasmota Energy: $SWITCH"
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echo "graph_category sensors"
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echo "graph_args --base 1000"
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echo "graph_vlabel kWh"
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echo "Energy.label Energy"
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echo "Energy.draw AREA"
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exit 0
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else
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res=$( curl -fsS --data-urlencode "cmnd=Status 8" http://$SWITCH/cm )
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energy=$( echo "$res" | sed 's/.*"Total":\([0-9.]*\)[^0-9.]*.*/\1/' )
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echo Energy.value $energy
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fi
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}
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[ "$1" = "config" ] && echo "graph_category sensors"
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case "$FUNCTION" in
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voltage)
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voltage "$1"
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;;
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power)
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power "$1"
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;;
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powerfactor)
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powerfactor "$1"
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;;
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current)
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current "$1"
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;;
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energy)
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energy "$1"
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;;
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esac
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