When EMQX boots up, it tries to get latest config from peer (core type) nodes, if none of the nodes are replying, the node will decide to boot with local config (and replay the committed changes) if the commit table is loaded from disk locally (an indication of the data being latest), otherwise it will sleep for 1-2 seconds and retry. This lead to a race condition, e.g. in a two nodes cluster: 1. node1 boots up 2. node2 boots up and copy mnesia table from node1 3. node1 restart before node2 can sync cluster.hocon from it 4. node1 boots up and copy mnesia table from node2 Now that both node1 and node2 has the mnesia `load_node` pointing to each other (i.e. not a local disk load). Prior to this fix, the nodes would wait for each other in a dead loop. This commit fixes the issue by allowing node to boot with local config if it does not have a lagging. |
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| .ci | ||
| .github | ||
| apps | ||
| bin | ||
| changes | ||
| deploy | ||
| lib-ee | ||
| rel | ||
| scripts | ||
| .editorconfig | ||
| .formatter.exs | ||
| .gitattributes | ||
| .gitignore | ||
| .tool-versions | ||
| APL.txt | ||
| build | ||
| CONTRIBUTING.md | ||
| dev | ||
| Dockerfile.ubuntu20.04.runner | ||
| Dockerfile.ubuntu20.04.runner.dockerignore | ||
| elvis.config | ||
| git-blame-ignore-revs | ||
| LICENSE | ||
| Makefile | ||
| mix.exs | ||
| NOTICE | ||
| pkg-vsn.sh | ||
| PLUGIN.md | ||
| README-CN.md | ||
| README-RU.md | ||
| README.md | ||
| rebar.config | ||
| rebar.config.erl | ||
| SECURITY.md | ||
| Windows.md | ||
EMQX
EMQX is the world's most scalable open-source MQTT broker with a high performance that connects 100M+ IoT devices in 1 cluster, while maintaining 1M message per second throughput and sub-millisecond latency.
EMQX supports multiple open standard protocols like MQTT, HTTP, QUIC, and WebSocket. It’s 100% compliant with MQTT 5.0 and 3.x standard, and secures bi-directional communication with MQTT over TLS/SSL and various authentication mechanisms.
With the built-in powerful SQL-based rules engine, EMQX can extract, filter, enrich and transform IoT data in real-time. In addition, it ensures high availability and horizontal scalability with a masterless distributed architecture, and provides ops-friendly user experience and great observability.
EMQX boasts more than 20K+ enterprise users across 50+ countries and regions, connecting 100M+ IoT devices worldwide, and is trusted by over 400 customers in mission-critical scenarios of IoT, IIoT, connected vehicles, and more, including over 70 Fortune 500 companies like HPE, VMware, Verifone, SAIC Volkswagen, and Ericsson.
For more information, please visit EMQX homepage.
Get Started
Run EMQX in the Cloud
The simplest way to set up EMQX is to create a managed deployment with EMQX Cloud. You can try EMQX Cloud for free, no credit card required.
Run EMQX using Docker
docker run -d --name emqx -p 1883:1883 -p 8083:8083 -p 8084:8084 -p 8883:8883 -p 18083:18083 emqx/emqx:latest
Next, please follow the Deploy with Docker guide for further instructions.
Run EMQX cluster on kubernetes
Please consult official EMQX Operator documentation for details.
Run EMQX on macOS
EMQX is available as core Homebrew package.
brew install emqx
emqx start
More installation options
If you prefer to install and manage EMQX yourself, you can download the latest version from www.emqx.io/downloads.
For more installation options, see the EMQX installation documentation.
Documentation
The EMQX documentation is available at www.emqx.io/docs/en/latest/.
The EMQX Enterprise documentation is available at docs.emqx.com/en/.
Contributing
Please see our contributing.md.
For more organised improvement proposals, you can send pull requests to EIP.
Get Involved
- Follow @EMQTech on Twitter.
- Join our Slack.
- If you have a specific question, check out our discussion forums.
- For general discussions, join us on the official Discord team.
- Keep updated on EMQX YouTube by subscribing.
Resources
-
A series of blogs to help developers get started quickly with MQTT in PHP, Node.js, Python, Golang, and other programming languages.
-
We have selected popular MQTT client SDKs in various programming languages and provided code examples to help you quickly understand the use of MQTT clients.
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An elegant cross-platform MQTT 5.0 client tool that provides desktop, command line, and web to help you develop and debug MQTT services and applications faster.
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Build a reliable, efficient, and industry-specific IoV platform based on EMQ's practical experience, from theoretical knowledge such as protocol selection to practical operations like platform architecture design.
Build From Source
The master branch tracks the latest version 5. For version 4.4 checkout the main-v4.4 branch.
EMQX 4.4 requires OTP 24. EMQX 5.0 and 5.1 can be built with OTP 24 or 25.
git clone https://github.com/emqx/emqx.git
cd emqx
make
_build/emqx/rel/emqx/bin/emqx console
For 4.2 or earlier versions, release has to be built from another repo.
git clone https://github.com/emqx/emqx-rel.git
cd emqx-rel
make
_build/emqx/rel/emqx/bin/emqx console
License
See LICENSE.