配置

FreeMQTT Plus 集群配置位于 ~/freemqttplus-compose/conf.d路径下。

配置文件 config.toml

[freemqtt]

# 通用配置
[freemqtt.common]
    # 用于生成客户端的 token 和 MQTT 客户端连接鉴权用的秘钥 
    # 必须为64位十六进制字符串（二进制256位秘钥）
    # 一定要注意保管，避免向外泄漏
    secret = "F593BDE387F7530CF0F35CC2DB763F755AB770E779C0FD0C3AB018E7439E2A3D"
    # 最大topic & topic filter 级别，默认 6
    maximum_topic_level = 6
    # 发布 FreeMQTT 统计信息间隔
    pub_sys_stat_interval = 15 # in seconds

#  MQTT 5.0 属性配置
[freemqtt.properties]
    session_expiry_interval = 7200 # in second
    message_expiry_interval = 7200 # in second
    receive_maximum = 1024
    maximum_packet_size = 2097152 # 2*1024*1024 = 2M bytes
    maximum_qos = 2
    retain_available = true
    topic_alias_maximum = 64
    wildcard_subscription_available = true
    subscription_identifiers_available = true
    shared_subscription_available = true
    server_keep_alive = 60 # in second
    response_information = "Welcome to FreeMQTT Broker."

# cluster A node list
[freemqtt.anode]
list = [ 
    { nodeid='A1',  address='fmq-a1', tcp_port=1883, ws_port=1080 },
    { nodeid='A2',  address='fmq-a2', tcp_port=1883, ws_port=1080 },
    { nodeid='A3',  address='fmq-a3', tcp_port=1883, ws_port=1080 },
]

# cluster B node list
[freemqtt.bnode]
list = [ 
    { nodeid='B1',  address='fmq-b1', port=9200},
    { nodeid='B2',  address='fmq-b2', port=9200},
]

# FreeMQTT Plus cluster logging
[freemqtt.logging]
address = "fmq-log"
port = 9300
path = "./log/freemqttc.log"
#path = "console"
maxim_size = 10485760 # 10M
level = 20 # logging.NOTSET = 0, logging.DEBUG = 10, logging.INFO = 20,  logging.WARNING = 30， logging.ERROR = 40， logging.CRITICAL = 50

更改 secret

在实际部署到生产环境时，为了安全，不建议使用 config.toml 中 secret 的默认值。

• secret 是 256 bit, 即长度为64的十六进制的字符串。
• 可以手动更改，但要保证长度为64个字符，字符是十六进制的字符(0-9 A-F)

亦可以用如下的命令随机生成 secret 值：

$ sudo docker exec fmq-a1 /freemqttd/gen_secret
secret: ECE10149E6F5FC94C1289B4E3C923351B40038E82BE602E917CEA3C9EF79410D

更新 secret 后， FreeMQTT Plus 集群需重新启动并且客户端的token也需要重新生成。