Mqtt broker in checkmk

Hallo checkmk Community, i am new in checkmk. I would like you use an esp 32 microcontroller to read temperature. The esp32 actually send over mqtt, but how can i use this information in checkmk? Goal: when the temperatur is to high i would like see this in checkmk? is it possible in checkmk does it gives an tutorial or so? I find in “other integrations“ the “MQTT broker statistics“ but i don´t know what i must configure in the rules to get the information from mqtt in checkmk. Can anybody helps me? THX for answer me

Inside CMK there is no native MQTT client but a solution for your problem can be this small tool linked here Mqtt Daten verarbeiten? - #2 by gulaschcowboy

The spool file method described is the easiest way i think.