Correct way to configure json_v2 with mqtt_consumer

Telegraf
, ,
2

I’m not sure why you need to change your setup if it works, but I would switch to the xpath_json parser instead of using the more complex json_v2 one:

[[inputs.mqtt_consumer]]
  servers = ["tcp://127.0.0.1:1883"]
  topics = [
    # Real topic structure
    # "home/OpenMQTTGateway_lilygo_rtl_433_ESP/RTL_433toMQTT/Bresser-3CH/1/130",
    "home/OpenMQTTGateway_lilygo_rtl_433_ESP/RTL_433toMQTT/#"
  ]

  topic_tag = "topic"
  qos = 0

  username = "telegraf"
  password = "notmyrealpassword"

  data_format = "xpath_json"
  xpath_native_types = true

  [[inputs.mqtt_consumer.topic_parsing]]
    topic = "+/+/+/+/+/+"
    tags = "site/_/_/model/channel/device_id"

  [[inputs.mqtt_consumer.xpath]]
    metric_name = "'mymetric'"

    [inputs.mqtt_consumer.xpath.fields]
      battery_ok = "/battery_ok = 1"
      temperature = "/temperature_C"
      humidity = "/humidity"
      rssi = "/rssi"

    [inputs.mqtt_consumer.xpath.tags]
      channel = "/channel"
      id = "/id"
      model = "/model"

which produces

> mymetric,channel=1,host=Hugin,id=130,model=Bresser-3CH battery_ok=true,humidity=19,rssi=-61,temperature=12.66667 1728307076000000000

for your example…

Regarding topic-parsing: You can leave this out if you don’t need the tags defined there…