Running V150 on Pi Zero W. Seems to boot properly. It shows [OK] Mosquitto. I opened up two terminal sessions.
In one side, I put:
root@DPNZ1:~# sudo /etc/init.d/mosquitto start
[ ok ] Starting mosquitto (via systemctl): mosquitto.service.
root@DPNZ1:~# mosquitto_pub -d -t hello/world -m “Hello from Terminal window 2!”
In the other side, I put the following, and got the subsequent error messages:
root@DPNZ1:~# mosquitto_sub -d -t hello/world
Client mosqsub/3320-DPNZ1 sending CONNECT
Client mosqsub/3320-DPNZ1 received CONNACK
Connection Refused: not authorised.
Any thoughts about how I get Mosquitto to work?