在RaspberryPi树莓派上安装mosquittomqtt服务器

转载&＃xff1a;https://www.switchdoc.com/2018/02/tutorial-installing-and-testing-mosquitto-mqtt-on-raspberry-pi/

https://learn.adafruit.com/diy-esp8266-home-security-with-lua-and-mqtt/configuring-mqtt-on-the-raspberry-pi

Installing the MQTT  “mosquitto”

Unfortunately, the Raspberry Pi normal “apt-get” archives do not contain the latest version of the Mosquitto software.  If you don’t install the latest version of the broker, you will get odd errors (because of version compatibility errors) and it will not work.  So, the first thing is to open a terminal window (or log in using ssh) to your Raspberry Pi and do the following:

sudo wget https://repo.mosquitto.org/debian/mosquitto-repo.gpg.key
sudo apt-key add mosquitto-repo.gpg.key
cd /etc/apt/sources.list.d/
sudo wget http://repo.mosquitto.org/debian/mosquitto-stretch.list
sudo apt-get update
sudo apt-get install mosquitto


Next we can install the three parts of Mosquitto proper.

• mosquitto – the MQTT broker (or in other words, a server)
• mosquitto-clients – command line clients, very useful in debugging
• paho-mqtt – the Python language bindings

If you’re going to use MQTT in a Python project, you’ll have to install paho-mqtt, which replaces the old Mosquitto Python module.

sudo apt-get install mosquitto mosquitto-clients
sudo apt-get install python-pip
sudo pip install paho-mqtt


As is the case with most packages from Debian, the broker is immediately started.  Since we have to configure it first, stop it.

sudo /etc/init.d/mosquitto stop

Configuring and Starting the Mosquitto Server

Before using Mosquitto, we need to set up the configuration file. The configuration files is located at /etc/mosquitto.

Open the file as follows:

sudo nano /etc/mosquitto/mosquitto.conf

You should see the following:

# Place your local configuration in /etc/mosquitto/conf.d/
#
# A full description of the configuration file is at
# /usr/share/doc/mosquitto/examples/mosquitto.conf.examplepid_file /var/run/mosquitto.pidpersistence true
persistence_location /var/lib/mosquitto/log_dest file /var/log/mosquitto/mosquitto.loginclude_dir /etc/mosquitto/conf.dChange the “log_dest” line to:log_dest topic

This puts the logging information as a “topic” so we can subscribe to it later on to see what is going on in our IOTRFID system.

Next add the next six lines:

log_type error
log_type warning
log_type notice
log_type informationconnection_messages true
log_timestamp true

Now your /etc/mosquitto.conf files should look like:

# Place your local configuration in /etc/mosquitto/conf.d/
#
# A full description of the configuration file is at
# /usr/share/doc/mosquitto/examples/mosquitto.conf.examplepid_file /var/run/mosquitto.pidpersistence true
persistence_location /var/lib/mosquitto/log_dest topiclog_type error
log_type warning
log_type notice
log_type informationconnection_messages true
log_timestamp trueinclude_dir /etc/mosquitto/conf.d

Starting the Mosquitto Server

Now start the mosquitto server:

sudo /etc/init.d/mosquitto start

Testing the Mosquitto server

Open up two more terminal windows.

In Terminal window 1 type:

mosquitto_sub -d -t hello/world

In Terminal window 2 type:

mosquitto_pub -d -t hello/world -m "Hello from Terminal window 2!"

When you have done the second statement you should see this in the Terminal 1 window.

~ $ sudo mosquitto_sub -d -t hello/world
Client mosqsub/3014-LightSwarm sending CONNECT
Client mosqsub/3014-LightSwarm received CONNACK
Client mosqsub/3014-LightSwarm sending SUBSCRIBE (Mid: 1, Topic: hello/world, QoS: 0)
Client mosqsub/3014-LightSwarm received SUBACK
Subscribed (mid: 1): 0
Client mosqsub/3014-LightSwarm received PUBLISH (d0, q0, r0, m0, &＃39;hello/world&＃39;, ... (32 bytes))
Greetings from Terminal window 2


Now you are running the Mosquitto broker successfully.