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How to Install Mosquitto Broker on Raspberry Pi

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In this post you’re going to install the Mosquitto Broker on a Raspberry Pi.

The broker is primarily responsible for receiving all messages, filtering the messages, decide who is interested in it and then publishing the message to all subscribed clients.

There are several brokers you can use. For this blog post series, we’re going to use the Mosquitto Broker which will be installed on a Raspberry Pi.

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Let’s install the Mosquitto Broker!

 

Installing Mosquitto Broker on Raspbian Stretch

To install the Mosquitto Broker enter these next commands:

pi@raspberry:~ $ sudo apt update
pi@raspberry:~ $ sudo apt install -y mosquitto mosquitto-clients

You’ll have to type Y and press Enter to confirm the installation. To make Mosquitto auto start on boot up enter:

pi@raspberry:~ $ sudo systemctl enable mosquitto.service

Testing Installation

Send the command:

pi@raspberry:~ $ mosquitto -v

This returns the Mosquitto version that is currently running in your Raspberry Pi. It should be 1.4 or above.

Note: sometimes the command mosquitto -v prompts a warning message saying “1484326030: Error: Address already in use”. That warning message means that your Mosquitto Broker is already running, so don’t worry about that.

Wrapping up

In the next blog post, we will experiment with Mosquitto Client to see how everything ties together with practical examples.

Like home automation? Learn more about Node-RED, Raspberry Pi, ESP8266 and Arduino with my course: Build a Home Automation System for $100.

Do you have any questions? Leave a comment down below!

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