Mosquitto

df -h
vcgencmd measure_temp
apt list --upgradable
apt upgrade

apt -f install
apt install mosquitto/stable
apt install mosquitto-clients/stable
df -h

mosquitto -v
systemctl start mosquitto
systemctl status mosquitto
systemctl enable mosquitto

ssh -L 1883:localhost:1883 [email protected]

MQTT Users

cat > /etc/mosquitto/conf.d/users.conf <<'EOF'
# Chorke Academia, Inc
# MQTT Users Config

allow_anonymous false
password_file /etc/mosquitto/passwd
EOF

cd  /etc/mosquitto/
# create first only user
mosquitto_passwd -c passwd admin
# create next respective mqtt users
mosquitto_passwd -b passwd user pass
cd $HOME

MQTT Testing

mosquitto_sub -u user -P pass -t dev/test
mosquitto_sub -u user -P pass -t dev/test -d

mosquitto_pub -u user -P pass -t dev/test -m 'Hello, World' 
mosquitto_pub -u user -P pass -t dev/test -m 'Hello, Academian'

mosquitto_sub -h host -u user -P pass -t dev/test
mosquitto_sub -h host -u user -P pass -t dev/test -d

mosquitto_pub -h host -u user -P pass -t dev/test -m 'Hello, World' 
mosquitto_pub -h host -u user -P pass -t dev/test -m 'Hello, Academian'

NodeRED

df -h
vcgencmd measure_temp
apt list --upgradable
apt upgrade

apt -f install
apt install nodered/stable
df -h

systemctl start nodered
systemctl status nodered
systemctl enable nodered

ssh -L 1880:localhost:1880 [email protected]
http://localhost:1880/

References

• Mosquitto Debian repository
• Arduino Client for MQTT
• Mosquitto Dashboard
• Mosquitto Download
• Mosquitto Config
• Home Assistant
• Node-RED