# EMQ X Broker

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English | [简体中文](./README-CN.md)

*EMQ X* broker is a fully open source, highly scalable, highly available distributed MQTT messaging broker for IoT, M2M and Mobile applications that can handle tens of millions of concurrent clients.

Starting from 3.0 release, *EMQ X* broker fully supports MQTT V5.0 protocol specifications and backward compatible with MQTT V3.1 and V3.1.1,  as well as other communication protocols such as MQTT-SN, CoAP, LwM2M, WebSocket and STOMP. The 3.0 release of the *EMQ X* broker can scaled to 10+ million concurrent MQTT connections on one cluster.

- For full list of new features, please read [EMQ X Release Notes](https://github.com/emqx/emqx/releases).
- For more information, please visit [EMQ X homepage](https://www.emqx.io).

## Installation

The *EMQ X* broker is cross-platform, which supports Linux, Unix, macOS and Windows. It means *EMQ X* can be deployed on x86_64 architecture servers and ARM devices like Raspberry Pi.

#### Installing via EMQ X Docker Image

```
docker run -d --name emqx -p 1883:1883 -p 8083:8083 -p 8883:8883 -p 8084:8084 -p 18083:18083 emqx/emqx
```

#### Installing via Binary Package

Get the binary package of the corresponding OS from [EMQ X Download](https://www.emqx.io/downloads) page.

- [Single Node Install](https://docs.emqx.io/broker/latest/en/getting-started/installation.html)
- [Multi Node Install](https://docs.emqx.io/broker/latest/en/advanced/cluster.html)


## Build From Source

The *EMQ X* broker requires Erlang/OTP R21+ to build since 3.0 release.

For 4.3 and later versions.

```bash
git clone https://github.com/emqx/emqx.git
cd emqx
make
_build/emqx/rel/emqx/bin console
```

For earlier versions, release has to be built from another repo.

```bash
git clone https://github.com/emqx/emqx-rel.git
cd emqx-rel
make
_build/emqx/rel/emqx/bin console
```

## Quick Start

```
# Start emqx
./bin/emqx start

# Check Status
./bin/emqx_ctl status

# Stop emqx
./bin/emqx stop
```

To view the dashboard after running, use your browser to open: http://localhost:18083

## FAQ

Visiting [EMQ X FAQ](https://docs.emqx.io/broker/latest/en/faq/faq.html) to get help of common problems.

## Roadmap

The [EMQ X Roadmap uses Github milestones](https://github.com/emqx/emqx/milestones) to track the progress of the project.

## Community, discussion, contribution, and support

You can reach the EMQ community and developers via the following channels:
- [Slack](https://slack-invite.emqx.io/)
- [Twitter](https://twitter.com/emqtt)
- [Facebook](https://www.facebook.com/emqxmqtt)
- [Reddit](https://www.reddit.com/r/emqx/)
- [Forum](https://groups.google.com/d/forum/emqtt)
- [Blog](https://medium.com/@emqtt)

Please submit any bugs, issues, and feature requests to [emqx/emqx](https://github.com/emqx/emqx/issues).

## MQTT Specifications

You can read the mqtt protocol via the following links:

[MQTT Version 3.1.1](https://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html)

[MQTT Version 5.0](https://docs.oasis-open.org/mqtt/mqtt/v5.0/cs02/mqtt-v5.0-cs02.html)

[MQTT SN](http://mqtt.org/new/wp-content/uploads/2009/06/MQTT-SN_spec_v1.2.pdf)

## License

Apache License 2.0, see [LICENSE](./LICENSE).