Sourdough Prometheus Exporter

This is a simple Prometheus exporter written in Go for the Bosch BME280 Sensor. It is part of a personal project to monitor the temperature and humidity of my sourdough cultures. https://slides.com/daisyt/observability-kitchen

The following metrics are exported:

• Temperature (celsius)
• Barometric pressure (hPa)
• Humidity (percentage of relative humidity)

Build it

Raspberry Pi is being used with the sensor. If you are also using a Raspberry Pi, you can connect the sensor to the Pi according to this diagram.

BME280	Desc	GPIO Header Pins
VIN	3.3V	P1-01
GND	Ground	P1-06
SCL	I2C SCL	P1-05
SDA	I2C SDA	P1-03

Run it

go get github.com/infoverload/sourdough-prometheus-exporter
cd sourdough-prometheus-exporter
go build 
./sourdough-prometheus-exporter

Start automatically on boot

If you want to automatically start the program on boot, you can use the provided systemd unit (sourdough.service).

Get current IP address on device running it

If your Pi is connected to the WiFi and your router assigns it a new IP address periodically, you can use the script provided to get alerts to your Slack about the IP changes. If you want to start this script on boot, you can use the provided systemd unit (gethostname.service).

To do

• write test
• implement simple service discovery
• authorisation