monitor temperature and humidity with Raspberry Pi 5 DHT11

[The-Tech]

I am attempting to monitor temperature and humidity with Raspberry Pi 5 using a DHT11 sensor. My Pi is running Bookworm and I find that the only way to get the needed Library files and scripts to work is to now run them is using them in a Virtual environment. Using the command python3 -m venv env and then running the source env/bin/activate to activate the session. In this session I can run the needed script and get the results locally via ssh session. However, because it is running a virtual session my Zabbix agent does not seem to see the results. I am running an imported template, but I am not seeing any temperature and humidity results.

I am somewhat new to Zabbix, so I am hoping that someone else has figured out where I am going wrong.


I used the following steps, and this worked well locally and I get the results that I need but I get Zabbix to see the info

https://pimylifeup.com/raspberry-pi-dht11-sensor/

If you are questioning as to why I am running this in a virtual environment, please see the attached screen shot

[Blevar]

Check if Zabbix have access to GPIO:

sudo usermod -a -G gpio zabbix

and restart your PI.

[Blevar]

Hi,
Have you tried to run your script like:

/path/to/env/bin/python /path/to/your_script.py

Link your python file from the venv folder. This will execute the script using the virtual environment which you have created.

[The-Tech]

Blevar, thanks for the suggestion but I am still spinning my wheels here. Clearly I am missing something but here is what i have done

in the zabbix_agentd.conf, I have added the following:

AllowKey=system.run[*]
UserParameter=dht.pull[*],/opt/TempMonitoring/venv/bin/python3 /opt/TempMonitoring/Adafruit_Python_DHT/examples/AdafruitDHT.py | awk -F[=*%] '{print $$$1}'





on the Zabbix Server for the host I created the Item called Temp Sensor using the key system.run[python3 /opt/TempMonitoring/Adafruit_Python_DHT/examples/AdafruitDHT.py 11 4]

but when I run or test the command, I keep getting the following errors



with errors out looking for library files in the /usr/local directory

I can run the command python3 /opt/TempMonitoring/Adafruit_Python_DHT/examples/AdafruitDHT.py 11 4 without issue from CLI




I even added the following in visudo




Where am I going wrong?

[Blevar]

Check if Zabbix have access to GPIO:

sudo usermod -a -G gpio zabbix

and restart your PI.

[The-Tech]

Ok thanks, I didn't think about that option