Difference between revisions of "Linux - Stats over MQTT"
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= The Script = | = The Script = | ||
* <code>vi /usr/local/bin/MQTTstats.sh</code> | |||
<syntaxhighlight lang="sh" line="1"> | <syntaxhighlight lang="sh" line="1"> | ||
Latest revision as of 18:05, 25 November 2023
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11 (bullseye) |
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20.04.3 |
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Requirements:
sudo apt install mosquitto-clientssudo apt install lm-sensors
The Script
vi /usr/local/bin/MQTTstats.sh
# Get uptime
if [ -f "/proc/uptime" ]; then
uptime=`cat /proc/uptime`
uptime=${uptime%%.*}
seconds=$(( uptime%60 ))
minutes=$(( uptime/60%60 ))
hours=$(( uptime/60/60%24 ))
days=$(( uptime/60/60/24 ))
fi
# Get loadavg
if [ -f "/proc/loadavg" ]; then
OneMin=`cat /proc/loadavg {{!}} cut -b 1-4`
FiveMin=`cat /proc/loadavg {{!}} cut -b 6-9`
FifteenMin=`cat /proc/loadavg {{!}} cut -b 11-14`
fi
# Get % Memory usage
MemUsed=`/usr/bin/free -t {{!}} grep "Mem:" {{!}} awk '{print (1-($7/$2))*100}'`
printf '{\t"uptime":"%s:%s:%s:%s",\n' "$days" "$hours" "$minutes" "$seconds"
printf '\t"loadavg1min":%.2f,\n' "$OneMin"
printf '\t"loadavg5min":%.2f,\n' "$FiveMin"
printf '\t"loadavg15min":%.2f,\n' "$FifteenMin"
printf '\t"loadavg":"%s %s %s",\n' "$OneMin" "$FiveMin" "$FifteenMin"
printf '\t"memused":%.2f,\n' "$MemUsed"
printf '"SENSORS":'
printf '%s' `/usr/bin/sensors -j`
printf '}\n'
Don't forget to make it executable...
sudo chmod +x /usr/local/bin/MQTTstats.sh
The cron job
Add this line by editing roots crontab
sudo crontab -e
& add this line at the end:
* * * * * /usr/bin/mosquitto_pub -h broker.domain.tld -t `hostname` -m "`/usr/local/bin/MQTTstats.sh`"
replace broker.domain.tld with the address of your broker