当前位置：网站首页>Internet of things development -- mqtt message server emqx

Internet of things development -- mqtt message server emqx

2022-07-29 02:14:00 【CK continues to grow】

Catalog

1. install EMQX

1.1 docker Image mount

1.2 ubuntu Of apt Source installation

1.3 Pull the source code for installation

2. mqtt Client side usage

3. Reference material

EMQX The official introduction
EMQX It's completely open source , Highly scalable , Highly available distributed MQTT Message server , It can handle tens of millions of concurrent clients .EMQX Full support MQTT V5.0 Protocol specification , Backwards compatible MQTT V3.1 and V3.1.1.

We need to install one first EMQX The message service . Here we use the environment ：

operating system ：ubuntu 18.04

EMQX Use version ：v5.0.3

1. install EMQX

install EMQX There are several ways ,1:docker Image mount ,2: Download the official binary package directly ,3: Download the source code to compile and install

1.1 docker Image mount

obtain docker Mirror image

// obtain  Docker  Mirror image 
docker pull emqx/emqx

start-up docker Containers

docker run -d --name emqx -p 1883:1883 -p 8083:8083 -p 8084:8084 -p 8883:8883 -p 18083:18083 emqx/emqx

visit EMQX Of dashboard
```
http://192.168.1.181:18083/#/login
```
explain ：EMQX Of Dashboard The default login account / password ： admin/public. The default account password is configured in /e tc/emqx/emqx.conf in

1.2 ubuntu Of apt Source installation

To configure EMQX Of APT Source

curl -s https://assets.emqx.com/scripts/install-emqx-deb.sh | sudo bash

Use APT install EMQX
```
sudo apt-get install emqx
```
start-up EMQX
```
sudo emqx start
```
It can be used after successful startup emqx ping Command to detect the running state of the node , return pong Indicates normal operation ：
```
sudo emqx ping
```
Or start as a service :
```
sudo systemctl start emqx
```
visit EMQX
```
http://192.168.1.181:18083/#/login
```

1.3 Pull the source code for installation

notes ： structure EMQX need Erlang/OTP R21+.

1. from git Pull source code

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

2. Switch to v5.0.3 Version of
```
cd emqx
git checkout v5.0.3
```
3. Compile source code
```
make
```
After compilation, there are emqx and emqx_ctl Two binary files

2. mqtt Client side usage

EMQX After installation , Let's install a desktop client to actually verify ,mqtt There are many clients , such as MQTT.fx, MQTT Box etc. , Here we use EMQX Official mqtt client MQTT X.

Download address ： As a free download 、 The trial EMQ product

2.1 Install well Mqtt X After the client , To configure mqtt Link to