Prometheus Endpoint, written in Python to read DHT11 1wire sensor and exposes temperature values as a prometheus metric.

Make sure, you have the required kernel modules loaded. To do so, follow these steps:

$ sudo modprobe w1-gpio
$ sudo modprobe w1-therm 
$ sudo echo "dtoverlay=w1-gpio" >> /boot/config.txt #to enable 1-wire config and persist after reboot
$ lsmod #check if modules are loaded correctly
$ sudo reboot

After your pi has been rebooted, check if you can list the attached 1-wire devices

$ ls /sys/bus/w1/devices/

Have a look at the sourcecode for details. Generally, you'll have to download and import the required python libraries. Refer to the official documentation on how to implement a prometheus exporter: https://github.com/prometheus/client_python.

I've used hypriot os with a RaspberryPi 3B+. It works on a Raspberry Pi 2 too, although docker builds might take some time, so be calm to your Pi.

You can run the exporter either via python itself or in a docker container. The required commands for running it via python are also in the supplied Makefile. For docker use:

$ docker build -t raspbi-temperature-exporter:arm32v6 -f Dockerfile .
$ docker run -it -e EXPORTER_PORT=9103 -p 9103:9103 raspbi-temperature-exporter:arm32v6

You can also download it from docker hub via docker pull lukasbahr/raspbi-temperature-exporter:arm32v6

• [OPEN] Add CI/CD Support
• [OPEN] Add unit tests
• [OPEN] use buildx to create the proper image
• [OPEN] Add health metric, error metric, scrape interval, general information about exporter etc.