VerneMQ is a high-performance, distributed MQTT message broker. It scales horizontally and vertically on commodity hardware to support a high number of concurrent publishers and consumers while maintaining low latency and fault tolerance. VerneMQ is the reliable message hub for your IoT platform or smart products.
VerneMQ is an Apache2 licensed distributed MQTT broker, developed in Erlang.
docker run --name vernemq1 -d erlio/docker-vernemq
Somtimes you need to configure a forwarding for ports (on a Mac for example):
docker run -p 1883:1883 --name vernemq1 -d erlio/docker-vernemq
This starts a new node that listens on 1883 for MQTT connections and on 8080 for MQTT over websocket connections. However, at this moment the broker won't be able to authenticate the connecting clients. To allow anonymous clients use the DOCKER_VERNEMQ_ALLOW_ANONYMOUS=on environment variable.
docker run -e "DOCKER_VERNEMQ_ALLOW_ANONYMOUS=on" --name vernemq1 -d erlio/docker-vernemq
This allows a newly started container to automatically join a VerneMQ cluster. Assuming you started your first node like the example above you could autojoin the cluster (which currently consists of a single container 'vernemq1') like the following:
docker run -e "DOCKER_VERNEMQ_DISCOVERY_NODE=<IP-OF-VERNEMQ1>" --name vernemq2 -d erlio/docker-vernemq
(Note, you can find the IP of a docker container using docker inspect <containername/cid> | grep \"IPAddress\").
To check if the bove containers have successfully clustered you can issue the vmq-admin command:
docker exec vernemq1 vmq-admin cluster status
+--------------------+-------+
| Node |Running|
+--------------------+-------+
|VerneMQ@172.17.0.151| true |
|VerneMQ@172.17.0.152| true |
+--------------------+-------+
All vmq-admin commands are available. See https://vernemq.com/docs/administration/ for more information.