telegraf/migrations/inputs_mqtt_consumer/testcases/deprecated_metric_buffer/telegraf.conf

# Read metrics from MQTT topic(s)
[[inputs.mqtt_consumer]]
  servers = ["tcp://127.0.0.1:1883"]
  topics = [
    "telegraf/host01/cpu",
    "telegraf/+/mem",
    "sensors/#",
  ]
  metric_buffer = 1024
  data_format = "influx"