Example connecting a MQTT client to an InfluxDB database using goqtt.
Configuration is done through environment variables. The InfluxDB server and bucket, as well as the MQTT broker and topic, should be set using the following environment variable names.
export INFLUX_HOST=http://192.168.1.210:8086
export INFLUX_BUCKET=goqtt-bucket
export MQTT_HOST=192.168.1.243
export MQTT_TOPIC=arduino/goqtt