Hello I have installed mosquitto on hassbian using sudo hassbian-config install mosquitto.
How to config HASS to use it as its broker?
I thought HASS doesn´t has broker inside since some version so I MUST install mosquitto - am I right or not?
In your configuration of the MQTT broker, you just point it to the IP of itself.
The old broker that came bundled with Home Assistant has been deprecated and should not be used. You are correct that you should install something outside of home assistant.
Are you aware of the fact that hassbian will no longer be continued: