In this tutorial I will show you how to setup a MQTT Broker in Linux( And I am using Raspberry pi3 this time).
Here is the link to mosquitto.
https://mosquitto.org/download/
Installation
Update your Device.
| sudo apt update |
Install the mosquitto by using below command:
| sudo apt install mosquitto |
if this error is shown:
| E: ロック /var/lib/dpkg/lock–frontend が取得できませんでした – open (11: リソースが一時的に利用できません) |
Please run these commands:
| sudo rm /var/lib/apt/lists/lock sudo rm /var/lib/dpkg/lock sudo rm /var/lib/dpkg/lock–frontend |
Start the Broker by this command;
| sudo systemctl start mosquitto |
And use this Command to check the Broker status.
| sudo systemctl status mosquitto |
Test
We can install a mqtt client by this command;
| sudo apt-get install mosquitto mosquitto-clients |
Open a Terminal, and run this command to subscribe to the Topic class1.
| mosquitto_sub -d -t class1 |
Open another Terminal, and run this command to publish a message with Topic class1.
| mosquitto_pub -d -t class1 -m 43.1 |
You can see 43.1 displayed.