I have problem with mosquitto, when i testing with command mosquitto_sub -d -t testTopic the result :
mosquitto_sub -d -t testTopic
Client (null) sending CONNECT
Client (null) received CONNACK (5)
Connection error: Connection Refused: not authorised.
Client (null) sending DISCONNECT
can you help me?
yo can see at my drive :
Did you setup a user and password for the MQTT broker?
If yes, you’ll need to pass the username and password in the command.
What Raspberry Pi model and operating system are you using? I see that you are constantly with permission issues…
How to change my mqtt broker password ? because i am forget my mqtt password for connecting between eps 32, raspberry pi and node red..
I am use raspberry pi 3 model b+