Hi,
Today’s post is about using the TEMPerV2:
My version reports as:
lsusb Bus 001 Device 004: ID 0b95:1790 ASIX Electronics Corp. AX88179 Gigabit Ethernet Bus 001 Device 005: ID 413d:2107 Bus 001 Device 006: ID 0424:7800 Standard Microsystems Corp. Bus 001 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
I am currently using this with Raspbian in conjunction with a Zabbix server. Installing is as follows:
sudo apt-get install libhidapi-dev libhidapi-hidraw0 cmake git git clone https://github.com/edorfaus/TEMPered.git
TEMPered/libtempered/temper_type.c needs modifying to work with this device, details be found here.
cd TEMPered
mkdir build
cd build
cmake ..
make
sudo make install
On Raspbian/Debian the libs need to copied to another location, before TEMPered works as intended:
sudo cp /usr/local/lib/libtempered* /usr/lib/
TEMPered should now be working as intended, for example:
pi@pitemp:~ $ sudo tempered /dev/hidraw1 0: temperature 26.56 °C
Zabbix
If you are using Zabbix:
like me then you can install zappix-agent
apt-get install zabbix-agent
And add the following to the bottom of: /etc/zabbix/zabbix_agentd.conf
UserParameter=cluster1.roomTemperature,tempered | grep -oP '(?<=/dev/hidraw1 0: temperature) [\d.]+'
Then restart Zabbix-agent:
systemctl restart zabbix-agent
Then add to your Zabbix Server as an host item and Zabbix agent type.
SNMP (Not tested, but should work)
If your are using Nagios or PRTG, or if prefer SNMP can also use if it with Zabbix; advanced knowledge of SNMP is presumed:
And add the following to the bottom of: /etc/snmp/snmpd.conf
pass .1.3.6.1.2.1.25.1.8 /bin/sh /usr/local/bin/snmp-cpu-temp
/usr/local/bin/snmp-cpu-temp
#!/bin/sh if [ "$1" = "-g" ] then echo .1.3.6.1.2.1.25.1.8 echo gauge tempered | grep -oP '(?<=/dev/hidraw1 0: temperature) [\d.]+' fi exit 0
Key: gauge
SNMP OID: .1.3.6.1.2.1.25.1.8
Edit 10/11/19 – /dev/hidraw1 needs to accessible by non root users. This should be done with a udev rule, but I couldn’t get this this to work; if any has an answer to this please comment below. Anyway so I fudged it by adding /bin/chmod 666 /dev/hidraw1 to rc.local. On distos running systemd, a systemd unit will probably need to be created and enabled; I won’t advise how to that here as a google search will give results pretty quickly.
Cron
If you don’ want to use a network monitor server you could just set a cronjob to check the temperature and send an email alert if temperature is to high, for example:
sudo crontab -e
*/15 * * * * /bin/bash /home/pi/check-temp.sh
This will check the temperature every 15 minutes and send an alert if required.
/home/pi/check-temp.sh
#!/bin/bash a=$(/usr/local/bin/tempered | grep -oP '(?<=/dev/hidraw1 0: temperature) [\d.]+') b=40 export a if [ $a \> $b ]; then python /home/pi/alert.py else echo "Temperature" $a"c, normal"; fi; sleep 10 unset a b
Will call /home/pi/alert.py and send alert if temperature is over 40 °c (to change this update b= ).
/home/pi/alert.py
# import necessary packages
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
import smtplib
import os
# create message object instance
msg = MIMEMultipart()
message = os.environ.get('a')
# setup the parameters of the message
password = "password"
msg['From'] = "[email protected]"
msg['To'] = "[email protected]"
msg['Subject'] = "Temperature Alert! Value in body is in Centigrade"
# add in the message body
msg.attach(MIMEText(message, 'plain'))
#create server
server = smtplib.SMTP('mailserver.example.com: 25')
server.starttls()
# Login Credentials for sending the mail
server.login(msg['From'], password)
# send the message via the server.
server.sendmail(msg['From'], msg['To'], msg.as_string())
server.quit()
print "successfully sent email to %s:" % (msg['To'])
Thanks Tom.
P.S Please feel free to comment.
Sources:
https://github.com/edorfaus/TEMPered/issues/51#issuecomment-360364866