MQTT Input Hostname

Telegraf
1

The host value set for mqtt_consumer events appears to be random. Is there a way I can set the hostname in telegraph based upon a topic component.

2

Hello @SeattleStephens,
Welcome! Can you please share your config?

3

I should have set not random, it will use the [agent]/hostname value but I want to specify the hostname value from the mqtt topic.

[[inputs.mqtt_consumer]]
   topics = [
      "tele/+/+/+/SENSOR"
   ]

   username = "myuser"
   password = "mypass"

   data_format = "json"

I want the hostname to be a value associated with the device that sent the mqtt message. So, for the above mqtt topic, it would be nice to use a regular expression to specify one of the components as the hostname.

   topics = [
      "tele/(+:hostname)/+/+/SENSOR"
   ]