Telegraf MQTT Consumer

This looks like a documentation issue. When you specify multiple servers to this plugin it allows you to connect to a MQTT Cluster.

Since you just want to read from two different brokers then you will need to use two instances of the plugin. This will allow you to run everything from a single Telegraf instance:

[[inputs.mqtt_consumer]]
	servers = [
		"tcp://192.168.1.27:1883",
	]

	topics = [
		"nexus433/#",
		"openweather/web/temperature",
		"speedtest/network/state",
	]
	data_format = "json"

[[inputs.mqtt_consumer]]
	servers = [
		"tcp://192.168.1.109:1883",
	]

	topics = [
		"nexus433/#",
		"openweather/web/temperature",
		"speedtest/network/state",
	]
	data_format = "json"