Emqtt节点桥接Bridge¶

EMQ Node Bridge:

多个EMQ brokers可以被Bridge在一起。Bridges forward MQTT messages from one broker node to another:

              ---------                     ---------                     ---------
Publisher --> | Node1 | --Bridge Forward--> | Node2 | --Bridge Forward--> | Node3 | --> Subscriber
              ---------                     ---------                     ---------
节点间桥接与集群不同，不复制主题树与路由表，只按桥接规则转发 MQTT 消息

Configure Bridge:

//Create bridge: emqttd1–sensor/#–>emqttd2
$ cd emqttd1 && ./bin/emqttd_ctl bridges start emqttd2@127.0.0.1 sensor/#

bridge is started.

$ ./bin/emqttd_ctl bridges list
bridge: emqttd1@127.0.0.1--sensor/#-->emqttd2@127.0.0.1

//Test the bridge
#在emqttd2上sub此topic
mosquitto_sub -t sensor/# -p 2883 -d

#在emqttd1上pub此topic
mosquitto_pub -t sensor/1/temperature -m "37.5" -d

//Delete the bridge
./bin/emqttd_ctl bridges stop emqttd2@127.0.0.1 sensor/#

mosquitto Bridge:

//Bridge mosquitto to emqttd broker:
             -------------             -----------------
Sensor ----> | mosquitto | --Bridge--> |               |
             -------------             |      EMQ      |
             -------------             |    Cluster    |
Sensor ----> | mosquitto | --Bridge--> |               |
             -------------             -----------------
//mosquitto.conf
connection emqttd
address 127.0.0.1:2883
topic sensor/# out 2
bridge_protocol_version mqttv311

rsmb Bridge:

//connection emqttd
addresses 127.0.0.1:2883
topic sensor/#broker.cfg: