Installation Mosquitto Broker MQTT in lubuntu (Ubuntu) Linux

That is MQTT ?
In short MQTT is a TCP / IP protocol lightweight messaging, the model is publication - subscriber requires a message broker  which is responsible for directing recipients through a topic  in common.
It is considered to Andrew James Stanford-Clark as the author of this protocol.
More information MQTT Wikipedia.
Official Website: mqtt.org

Application
I believe that this protocol is very practical and is currently implemented in IoT and M2M "machine-to-machine" applications, field application in this case would be sending monitoring and control data between servers, sensors and actuators.

Previous tutorials Recommended
Tutorial 1 : Install Lubuntu (Ubuntu)
Tutorial 2 : Installation node red platform
Tutorial  3 : Installation Node Red Dashboard
Tutorial  4:  Installation Modbus TCP IP in Node Red

Architecture MQTT Protocol 

Broker Mosquitto MQTT
Eclipse mosquitto ™ It is open source, it is a message broker this intermediary MQTT allows the connection of devices.
Official Website: mosquitto.org

Installation of Mosquitto Broker MQTT in lubuntu (Ubuntu) Linux

MQTT to connect devices with Node-red I use mosquitto as Broker, this is an extra complement Node red in the next tutorial installation.

Enter the terminal lubuntu command as root.

Add mosquitto repositories dev

sudo apt-add-repository ppa:mosquitto-dev/mosquitto-ppa 

Update repositories linux

sudo apt-get update

Install broker mosquitto

sudo apt-get install mosquitto

Install development libraries

sudo apt-get install libmosquitto-dev

Installing client MQTT

sudo apt-get install mosquitto-clients

Check that mosquitto is running

sudo service mosquitto status

Ready to have fun ...

Video Install Mosquitto MQTT Lubuntu Ubuntu Linux

Customer tests Mosquitto MQTT in lubuntu (Ubuntu) Linux
Subscriber
Our client is suscruibira the theme or topic  "Sensor_MQTT" meaning that all published messages associated with this topic will be received.

mosquitto_sub -h localhost -t "Sensor_MQTT" -v

Publisher
Our client publish the message "Error Sensor" through the topic "Alert_MQTT"

mosquitto_pub -h localhost -t "Alert_MQTT" -m "Error_Sensor"

Ready to have fun ...

Video Test Mosquitto MQTT in Lubuntu (Ubuntu) linux

References
Tutorial 1 : Install Lubuntu (Ubuntu)
Tutorial 2 : Installation node red platform
Tutorial  3: Installation Node Red Dashboard
Tutorial  4: Installation Modbus TCP IP in Node Red

node-red-dashboard
Nodered.org
github.com/node-red
Nodejs.org

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