MQTT Broker：使用 EMQX
EMQX 开源版
EMQX Docker 启动
docker run -d \
--name emqx \
--restart --restart=always \
-p 1883:1883 \
-p 8083:8083 \
-p 8084:8084 \
-p 8883:8883 \
-p 18083:18083 \
emqx/emqx:5.7.0
MQTT 匿名连接
127.0.0.1
1883
Web 管理面板
http://localhost:18083/
默认的
账号：admin
密码：public
添加其他 MQTT 连接用户
下载 EMQX
https://www.emqx.io/zh/downloads?os=Ubuntu
服务器操作系统是 Ubuntu，按照提示下载安装。
安装包类型
🟢 下载 emqx-5.0.13-ubuntu20.04-amd64.deb
wget https://www.emqx.com/zh/downloads/broker/5.0.13/emqx-5.0.13-ubuntu20.04-amd64.deb
🟢 安装 EMQX
sudo apt install ./emqx-5.0.13-ubuntu20.04-amd64.deb
启动 EMQX
参考：使用指南
🟢 启动 EMQX
sudo systemctl start emqx
🟢 停止 EMQX
emqx stop
🟢 卸载 EMQX Broker
DEB 包:
sudo apt remove --purge emqx
查看状态
root@dev:~# sudo systemctl status emqx
● emqx.service - emqx daemon
Loaded: loaded (/lib/systemd/system/emqx.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2023-01-10 02:46:38 UTC; 1h 26min ago
Main PID: 1070751 (beam.smp)
Tasks: 35 (limit: 1067)
Memory: 172.7M
CGroup: /system.slice/emqx.service
├─1070751 emqx -Bd -spp true -A 4 -IOt 4 -SDio 8 -e 262144 -zdbbl 8192 -Q 1048576 -P 2097152 -- -root /usr/lib/emqx -progname /usr/bin/emqx -- -home /var/lib/emqx -- -noshell -nosh>
├─1071037 erl_child_setup 1048576
├─1071135 sh -s disksup
├─1071136 /usr/lib/emqx/lib/os_mon-2.7.1/priv/bin/memsup
├─1071137 /usr/lib/emqx/lib/os_mon-2.7.1/priv/bin/cpu_sup
├─1071243 inet_gethost 4
└─1071244 inet_gethost 4
Jan 10 02:46:38 dev systemd[1]: Started emqx daemon.
Jan 10 02:46:41 dev bash[1070751]: WARNING: Default (insecure) Erlang cookie is in use.
Jan 10 02:46:41 dev bash[1070751]: WARNING: Configure node.cookie in /etc/emqx/emqx.conf or override from environment variable EMQX_NODE__COOKIE
root@dev:~#
测试连接
服务器防火墙放开端口：1883、18083
连接 1883
访问 IP地址：18083
默认账号密码，从配置文件中可以获取
dashboard {
listeners.http {
bind = 18083
}
default_username = "admin"
default_password = "public"
}
默认的
账号：admin
密码：public
提示修改密码
设置中文
查看连接
配置文件
配置文件路径：/etc/emqx/emqx.conf
配置文件内容，参考：配置文件
EMQX的配置文件格式是 HOCON (opens new window)。 HOCON（Human-Optimized Config Object Notation）是一个JSON的超集，非常适用于易于人类读写的配置数据存储。
配置文件内容
## NOTE:
## Configs in this file might be overridden by:
## 1. Environment variables which start with 'EMQX_' prefix
## 2. File $EMQX_NODE__DATA_DIR/configs/cluster-override.conf
## 3. File $EMQX_NODE__DATA_DIR/configs/local-override.conf
##
## The *-override.conf files are overwritten at runtime when changes
## are made from EMQX dashboard UI, management HTTP API, or CLI.
## All configuration details can be found in emqx.conf.example
node {
name = "emqx@127.0.0.1"
cookie = "emqxsecretcookie"
data_dir = "/var/lib/emqx"
}
log {
file_handlers.default {
level = warning
file = "/var/log/emqx/emqx.log"
}
}
cluster {
name = emqxcl
discovery_strategy = manual
}
listeners.tcp.default {
bind = "0.0.0.0:1883"
max_connections = 1024000
}
listeners.ssl.default {
bind = "0.0.0.0:8883"
max_connections = 512000
ssl_options {
keyfile = "/etc/emqx/certs/key.pem"
certfile = "/etc/emqx/certs/cert.pem"
cacertfile = "/etc/emqx/certs/cacert.pem"
}
}
listeners.ws.default {
bind = "0.0.0.0:8083"
max_connections = 1024000
websocket.mqtt_path = "/mqtt"
}
listeners.wss.default {
bind = "0.0.0.0:8084"
max_connections = 512000
websocket.mqtt_path = "/mqtt"
ssl_options {
keyfile = "/etc/emqx/certs/key.pem"
certfile = "/etc/emqx/certs/cert.pem"
cacertfile = "/etc/emqx/certs/cacert.pem"
}
}
# listeners.quic.default {
# enabled = true
# bind = "0.0.0.0:14567"
# max_connections = 1024000
# keyfile = "/etc/emqx/certs/key.pem"
# certfile = "/etc/emqx/certs/cert.pem"
#}
dashboard {
listeners.http {
bind = 18083
}
default_username = "admin"
default_password = "public"
}
authorization {
deny_action = ignore
no_match = allow
sources = [
{
type = file
enable = true
# This file is immutable to EMQX.
# Once new rules are created from dashboard UI or HTTP API,
# the file 'data/authz/acl.conf' is used instead of this one
path = "/etc/emqx/acl.conf"
}
]
}
配置文件内容了解
不同连接方式和端口
listeners.tcp.default {
bind = "0.0.0.0:1883"
max_connections = 1024000
}
listeners.ssl.default {
bind = "0.0.0.0:8883"
max_connections = 512000
ssl_options {
keyfile = "/etc/emqx/certs/key.pem"
certfile = "/etc/emqx/certs/cert.pem"
cacertfile = "/etc/emqx/certs/cacert.pem"
}
}
listeners.ws.default {
bind = "0.0.0.0:8083"
max_connections = 1024000
websocket.mqtt_path = "/mqtt"
}
listeners.wss.default {
bind = "0.0.0.0:8084"
max_connections = 512000
websocket.mqtt_path = "/mqtt"
ssl_options {
keyfile = "/etc/emqx/certs/key.pem"
certfile = "/etc/emqx/certs/cert.pem"
cacertfile = "/etc/emqx/certs/cacert.pem"
}
}
Web 页面大屏（指示板）
dashboard {
listeners.http {
bind = 18083
}
default_username = "admin"
default_password = "public"
}
配置认证
找到认证设置页面，选择用户名密码的认证方式。
选择使用Built-in Database（内置的数据库）
选用用户名方式、加密方式、hash加盐是前缀还是后缀，默认即可
用户管理
添加用户
