What packages should be included in the OpenWRT build (openwrt as an mqtt broker)?

Question

linux

Good day to all! There was a need for remote control of arduino with a certain number of sensors and relays. The choice fell on mqtt. Which requires a back end i.e. a broker. I don’t really want to start a separate box for this, so I decided to limit myself to openwrt virtualization on my mikrotik. To minimize the load on Mikrotik, I want to build openwrt, ideally acting only as an mqtt broker. Is it real at all? And if so, can you tell me what exactly can be thrown out, left or where to dig? I understand that the question is ridiculous, but I have had very little contact with Linux throughout my life, and starting a host with Windows for the sake of one service is somehow stupid ... It is also possible to make a separate mr3020 router as a broker, maybe openwrt virtualization in RouterOS is not quite right decision? Who thinks what?

Answer 1

I compiled OpenWRT for mikrotik MetaROUTER with a minimal set and mosquitto.
After starting, it works until the network interface is turned on and immediately goes into a panic.
And then very often goes into a panic and restarts!
Then I launched it on TP-link and it works fine...