# Get Started

# Overview

EMQ X Edge is an open source, lightweight MQTT broker running at any resource constraint edge devices. It's written in Erlang/OTP, and Erlang/OTP is a concurrent, fault-tolerant, soft-realtime and distributed programming platform. MQTT is an extremely lightweight publish/subscribe messaging protocol powering IoT, M2M and Mobile applications.

Highlights of the EMQ X Edge Broker :

  • It supports MQTT, TCP, WebSocket and different industry protocols such ModBus.
  • It can be running at different kinds of resource constrained edge devices, such as Raspberry Pi, gateway and industrial servers.
  • It provides local data processing and cloud synchronization which will automatically synchronize data with cloud service based on network status.
  • Integrated with EMQ X Storm which provides central monitoring and management services.

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# Features

  • Lightweight - 20MB runtime memory with minimal resource consumption, which can run on ARM/x86 CPU, from Raspberry Pi to industrial X86 servers.
  • Near real-time response - processing the data generated locally, so it can respond quickly to local events.
  • Operate online or offline - it operate locally and can cache data when network is not available; when they’re back online it can synchronize data to the cloud and use the cloud for management, analysis and date persistence.
  • Easy management & monitoring - central edge broker management, data synchronization, visualized monitoring tools based on web UI.
  • Extensibility - Open APIs available to third party plugins to support more protocols, new functions and features.

# Quick Start

# Download and Install

The EMQ X Edge is cross-platform, which could be deployed on Raspberry Pi, Linux and FreeBSD.

Download binary package from: http://emqx.io/downloads (opens new window) .

Installing on Linux, for example:

unzip emqx-edge-centos7-v3.1.zip && cd emqx

# Start EMQ X Edge
./bin/emqx start

# Check Status
./bin/emqx_ctl status

# Stop EMQ X
./bin/emqx stop

# Installing from Source

Tip

The EMQ X Edge broker requires Erlang/OTP R21+ to build since 3.0 release.

git clone https://github.com/emqx/emqx.git

cd emqx && make rel

cd rel/emqx && ./bin/emqx console

# Plugins

The EMQ X Edge broker could be extended by Plugins. A plugin is an Erlang application that adds extra feature to the EMQ X Edge broker:

emqx_retainer (opens new window)Store Retained Messages
emqx_auth_clientid (opens new window)Authentication with ClientId
emqx_auth_username (opens new window)Authentication with Username and Password
emqx_auth_http (opens new window)Authentication/ACL with HTTP API
emqx_auth_mysql (opens new window)Authentication with MySQL
emqx_sn (opens new window)MQTT-SN Protocol Plugin
emqx_coap (opens new window)CoAP Protocol Plugin
emqx_stomp (opens new window)STOMP Protocol Plugin
emqx_recon (opens new window)Recon Plugin
emqx_reloader (opens new window)Reloader Plugin
emqx_web_hook (opens new window)Web Hook Plugin

A plugin could be enabled by 'bin/emqx_ctl plugins load' command.

For example, enable 'emqx_auth_mysql' plugin:

./bin/emqx_ctl plugins load emqx_auth_mysql

# MQTT Client Libraries

GitHub: https://github.com/emqtt (opens new window)

emqttc (opens new window)Erlang MQTT Client
emqtt_benchmark (opens new window)MQTT benchmark Tool
CocoaMQTT (opens new window)Swift MQTT Client
QMQTT (opens new window)QT MQTT Client

Eclipse Paho: https://www.eclipse.org/paho/ (opens new window)

MQTT.org: https://github.com/mqtt/mqtt.github.io/wiki/libraries (opens new window)