To start a single HiveMQ instance and allow access to the MQTT port as well as the Web UI, get Docker and run the following command:
docker run --ulimit nofile=500000:500000 -p 8080:8080 -p 1883:1883 hivemq/hivemq4
You can connect to the broker (1883) or the WebUI (8080) via the respective ports.
For running HiveMQ with Docker in a cluster please refer to the HiveMQ DNS discovery image.
By default, this image will check for root privileges at startup and, if present, switch to a less privileged user before running the HiveMQ broker.
This will enhance the security of the container.
If you wish to skip this step, set the environment variable HIVEMQ_NO_ROOT_STEP_DOWN to false to disable this step.