****# EMQX Operator

A Kubernetes Operator for EMQX

Overview

The EMQX Operator provides Kubernetes native deployment and management of EMQX, including EMQX Broker and EMQX Enterprise. The purpose of this project is to simplify and automate the configuration of the EMQX cluster.

The EMQX Operator includes, but is not limited to, the following features:

• Simplified Deployment EMQX: Declare EMQX clusters with EMQX custom resources and deploy them quickly. For more details, please check Quick Start.

• Manage EMQX Cluster: Automate operations and maintenance for EMQX, including cluster upgrades, runtime data persistence, updating Kubernetes resources based on the status of EMQX, etc. For more details, please check Manage EMQX.

EMQX and EMQX Operator compatibility

EMQX Enterprise

EMQX Enterprise Version	EMQX Operator Version	APIVersion	Kind
4.3.x (included) ～ 4.4	1.2.1, 1.2.2, 1.2.3	apps.emqx.io/v1beta3	EmqxEnterprise
4.4.6 (included) ～ 4.4.8	1.2.5	apps.emqx.io/v1beta3	EmqxEnterprise
4.4.8 (included) ～ 4.4.14	1.2.6, 1.2.7, 1.2.8, 2.0.0, 2.0.1, 2.0.2, 2.0.3	apps.emqx.io/v1beta3	EmqxEnterprise
4.4.14 (included) or higher 4.4.x	2.1.0, 2.1.1	apps.emqx.io/v1beta4	EmqxEnterprise
5.0.0 (included) ~ 5.0.23	2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.1.0, 2.1.1	apps.emqx.io/v2alpha1	EMQX
5.1.1 or higher	2.2.0	apps.emqx.io/v2beta1	EMQX

EMQX Open Source

EMQX Open Source Version	EMQX Operator Version	APIVersion	Kind
4.3.x (included) ～ 4.4	1.2.1, 1.2.2, 1.2.3	apps.emqx.io/v1beta3	EmqxBroker
4.4.6 (included) ～ 4.4.8	1.2.5	apps.emqx.io/v1beta3	EmqxBroker
4.4.8 (included) ～ 4.4.14	1.2.6, 1.2.7, 1.2.8, 2.0.0, 2.0.1, 2.0.2, 2.0.3	apps.emqx.io/v1beta3	EmqxBroker
4.4.14 or higher 4.4.x	2.1.0, 2.1.1	apps.emqx.io/v1beta4	EmqxBroker
5.0.6 (included) ～ 5.0.8	2.0.0, 2.0.1, 2.0.3	apps.emqx.io/v2alpha1	EMQX
5.0.8 (included) ～ 5.0.14	2.0.2	apps.emqx.io/v2alpha1	EMQX
5.0.14 (included) ~ 5.0.23	2.1.0, 2.1.1	apps.emqx.io/v2alpha1	EMQX
5.1.1 or higher	2.2.0	apps.emqx.io/v2beta1	EMQX

How to selector Kubernetes version

The EMQX Operator requires a Kubernetes cluster of version >=1.24.

Kubernetes Versions	EMQX Operator Compatibility	Notes
1.24 or higher	All functions supported
1.22 (included) ～ 1.23	Supported, except MixedProtocolLBService	EMQX cluster can only use one protocol in LoadBalancer type of Service, for example TCP or UDP.
1.21 (included) ～ 1.22	Supported, except pod-deletion-cost	When using EMQX Core + Replicant mode cluster, updating the EMQX cluster cannot accurately delete Pods.
1.20 (included) ～ 1.21	Supported, manual .spec.ports[].nodePort assignment required if using NodePort type of Service	For more details, please refer to Kubernetes changelog.
1.16 (included) ～ 1.20	Supported, not recommended due to lack of testing
Lower than 1.16	Not supported	apiextensions/v1 APIVersion is not supported.

CustomResourceDefinitions

A core feature of the EMQX Operator is to monitor the Kubernetes API server for changes to specific objects and ensure that the running EMQX deployments match these objects. The Operator acts on the following custom resource definitions (CRDs).

For more details on EMQX, please check the reference document.

The EMQX Operator automatically detects changes on any of the above custom resource objects and ensures that running deployments are kept in sync with the changes.

Getting Start

For more information on getting started, see the getting started.

Public Cloud Platform Deployment Guide

Public Cloud Platform	Deployment Guide
AWS	Deploy EMQX On Amazon Elastic Kubernetes Service
Azure	Deploy EMQX on Azure Kubernetes Service
Google Cloud	Deploy EMQX on Google Cloud GKE
Alibaba Cloud	Deploy EMQX on Alibaba Cloud ACK
Huawei Cloud	Deploy EMQX on Huawei Cloud CCE
Tencent Cloud	Deploy EMQX on Tencent Cloud TKE

Development

Prerequisites

• Golang environment
• docker (used for creating container images, etc.)
• Kubernetes cluster
• teleperence

Install Teleperence for once

make telepresence

Connect to cluster

./bin/telepresence connect

Contributing

Many files (API, config, controller, hack,...) in this repository are auto-generated. Before proposing a pull request:

1. Commit your changes.
2. make and make manifests
3. Commit the generated changes.

Troubleshooting

Check the troubleshooting documentation for common issues and frequently asked questions (FAQ).