MQTT Data Exporter 
What does it do?
Simply it subscribes to MQTT topics and exposes data published there in way that is easy to read with Prometheus
Links
Accepted parameters
web.listen-address: [Default: ":2112"] Address on which to expose metrics and web interface.
web.telemetry-path: [Default: "/metrics"] Path under which to expose metrics.
mqtt.host: [Default: "127.0.0.1:1883"] Mqtt host address and port.
mqtt.clientId: [Default: "mqtt_exporter"] Mqtt clientId.
mqtt.username: [Default: ""] Mqtt username.
mqtt.password: [Default: ""] Mqtt password
naming.config: [Default: "/etc/mqtt_exporter/naming.yaml"] File containg naming convertions
metrics.prefix: [Default: "mqtt_exporter"] Prefix for metrics names
log.level: [Default: 2] Log level
naming conversion file format:
Group1: # "group" attribute of metric
- device: device_name # device name from mqtt message
# used for matching
# "device" attribute of metrics
name: friendly_name # "friendly_name" attribute value
sensors: # list of "sensor_name"
sensor_name: sensor_alias # for this device for every readout from "sensor_name" there will be "sensor_alias" label added
log levels parameter values
| value | meaning |
|---|---|
| 1 | DEBUG |
| 2 | INFO |
| 3 | WARN |
| 4 | ERROR |
| 5 | OFF |
Running in docker
First build project:
cd $GOPATH/src/github.com/klaper_/mqtt_data_exporter
go build -o bin/mqtt_data_exporter
Build docker image:
docker build -t mqtt_data_exporter .
Run container:
docker run -p 2112:2112 mqtt_data_exporter --mqtt.host "mqtthost.local:1883"