How to config a secure MQTT broker

Update system

$ apt-get update
$ apt-get upgrade

Create a folder

$ mkdir ./mosquitto-data

Go to the created folder and clone|run install-mqtt-broker script

note: change the following username and password

$ cd ./mosquitto-data
$ sudo curl -s https://raw.githubusercontent.com/MahdadGhasemian/mqtt-broker/main/install-mqtt-broker.sh | bash -s username password

The scripts will show following log

• copy the last line of the log and run it on your local system like this:

  $ sudo bash -c "echo "x.x.x.x mqtt-host-tekp" >> /etc/hosts"

• copy client folder to your local, it has three files (ca.crt client.crt client.key)

How to configure the MQTTX client application

Test message