MQTT: install di Ubuntu 16.04
sumber: http://linoxide.com/tools/setup-mosquitto-mqtt-server-ubuntu-16-04/
Mosquitto MQTT Server adalah message broker yang bekerja di atas protokol MQTT. MQTT adalah protokol messaging ringan yang standar ISO untuk digunakan di atas protokol TCP/IP. Hal ini banyak digunakan untuk berkomunikasi dengan perangkat Internet of Things. Kami akan menginstal Mosquitto di server Ubuntu 16.04 dan kami akan mengirim pesan dari perangkat lunak MQTT-spy. Mosquitto adalah proyek Eclipse dan didistribusikan dengan lisensi EDL. Jadi mari kita mulai.
Kompilasi server Mosquitto MQTT dari sumber
Instalasi aplikasi pendukung,
sudo su apt update locale-gen id_ID.UTF-8 apt-get install build-essential libwrap0-dev libssl-dev libc-ares-dev uuid-dev xsltproc
Tambahkan mosquitto user, karena secara default berjalan sebagai non-root.
adduser mosquitto
Untuk memudahkan beri sudo rights ke user ini, karena kita akan melakukan proses instalasi dengan user ini.
usermod -aG sudo mosquitto
Login sebagai mosquitto
su mosquitto cd
Download, extraxt, compile & install,
wget https://mosquitto.org/files/source/mosquitto-1.4.9.tar.gz tar xvzf mosquitto-1.4.9.tar.gz cd mosquitto-1.4.9/ make && sudo make install
Konfigurasi Mosquitto MQTT Server
buat password untuk mqtt-spy,
sudo mosquitto_passwd -c /etc/mosquitto/pwfile mqtt-spy
masukan password untuk mqtt-spy user yang akan digunakan untuk connect dari client. Kita perlu menambahkan ijin ke mosquitto user pada directory yang relevan.
sudo mkdir /var/lib/mosquitto/ sudo chown -R mosquitto:mosquitto /var/lib/mosquitto/
Buat file konfigurasi Mosquitto MQTT Server,
sudo nano /etc/mosquitto/mosquitto.conf
Isi dengan
persistence true persistence_location /var/lib/mosquitto/ persistence_file mosquitto.db log_dest syslog log_dest stdout log_dest topic log_type error log_type warning log_type notice log_type information connection_messages true log_timestamp true allow_anonymous false password_file /etc/mosquitto/pwfile
Setelah config di simpan, jalankan ldconfig
sudo ldconfig
Tambahkan systemd unit file
sudo nano /etc/systemd/system/mosquitto.service
Isi dengan
[Unit] Description=Insite MQTT Broker [Service] ExecStart=/usr/local/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf Restart=always [Install] WantedBy=multi-user.target
Jalankan
Jalankan
sudo systemctl start mosquitto.service
Cek status
systemctl status mosquitto.service
Set supaya mosquitto jalan saat boot,
sudo systemctl enable mosquitto.service
Setup MQTT-Spy dan connnecting
MQTT-Spy adalah Java based client untuk menyambungkan diri ke MQTT server. MQTT-Spy bisa di ambil di
https://github.com/eclipse/paho.mqtt-spy/wiki/Downloads https://github.com/kamilfb/mqtt-spy/releases/download/mqtt-spy_v0.5.4/mqtt-spy-0.5.4-jar-with-dependencies.jar
Menjalankan dengan
java -jar mqtt-spy-0.5.4-jar-with-dependencies.jar
You can get it from github but note that you must have Oracle JDK installed. It does NOT work with OpenJDK. First thing to do after staring MQTT-spy is to create new connection. You add your server IP and default port 1883.
mqtt spy
Then you add password and user name we made earlier, in my case it is mqtt-spy and password is password.
mqtt password
Then we can open terminal window on server and type following command
mosquitto_sub -v -t 'linoxide/topic' -u mqtt-spy -P password
To explain flags, -v is for verbosity, -t is for topic followed by topic inside quotes, -u is for user and -P is password. After typing this command it will seeming hang, but then we need to use MQTT-spy to create new topic and send a message to same topic, like on picture bellow.
MQTT-spy
Conclusion
We have successfully installed Mosquitto MQTT server that enables you to have network of connected IoT devices over MQTT 3.1 protocol. We installed it on Ubuntu on classic x86 PC which is what most people use for development and learning purposes. For real IoT you would want an ARM device. This is all for this article thank you for reading.