使用 Helm 安装 MQTT 服务器-EMQX

EMQX 安装

ℹ️ Info:

即 EMQX 服务器端。

> helm repo add emqx https://repos.emqx.io/charts

"emqx" has been added to your repositories

> helm repo update

Hang tight while we grab the latest from your chart repositories...

...Successfully got an update from the "emqx" chart repository

Update Complete. ⎈Happy Helming!⎈

> helm search repo emqx

NAME CHART VERSION APP VERSION DESCRIPTION

emqx/emqx 4.4.0 4.4.0 A Helm chart for EMQ X

emqx/emqx-ee 4.4.1 4.4.1 A Helm chart for EMQ X

emqx/emqx-operator 1.0.1 1.1.2 A Helm chart for EMQX Operator Controller

emqx/kuiper 0.9.0 0.9.0 A lightweight IoT edge analytic software

安装：

vi values.yaml:

replicaCount: 1

image:

repository: emqx/emqx

pullPolicy: IfNotPresent

  

recreatePods: false

  

podManagementPolicy: Parallel

  

extraEnv: []

  

extraEnvFrom: []

  

extraArgs: []

  

extraVolumes: []

  

extraVolumeMounts: []

  

persistence:

enabled: true

size: 8Gi

storageClass: "local-path"

accessMode: ReadWriteOnce

  

resources: {}

# limits:

# cpu: 500m

# memory: 512Mi

# requests:

# cpu: 500m

# memory: 512Mi

  

# Containers that run before the creation of EMQ X containers. They can contain utilities or setup scripts.

initContainers: {}

# - name: mysql-probe

# image: alpine

# command: ["sh", "-c", "for i in $(seq 1 300); do nc -zvw1 mysql 3306 && exit 0 || sleep 3; done; exit 1"]

  

## EMQ X configuration item, see the documentation (https://hub.docker.com/r/emqx/emqx)

emqxConfig:

EMQX_NAME: "{{ .Release.Name }}"

## Cluster discovery by k8s

EMQX_CLUSTER__DISCOVERY: "k8s"

EMQX_CLUSTER__K8S__APP_NAME: "{{ .Release.Name }}"

EMQX_CLUSTER__K8S__APISERVER: "https://kubernetes.default.svc:443"

EMQX_CLUSTER__K8S__SERVICE_NAME: "{{ .Release.Name }}-headless"

EMQX_CLUSTER__K8S__NAMESPACE: "{{ .Release.Namespace }}"

EMQX_CLUSTER__K8S__ADDRESS_TYPE: "hostname"

EMQX_CLUSTER__K8S__SUFFIX: "svc.cluster.local"

  

emqxAclConfig: >

{allow, {user, "dashboard"}, subscribe, ["$SYS/#"]}.

{allow, {ipaddr, "127.0.0.1"}, pubsub, ["$SYS/#", "#"]}.

{deny, all, subscribe, ["$SYS/#", {eq, "#"}]}.

{allow, all}.

  

emqxLoadedPlugins: >

{emqx_management, true}.

{emqx_recon, true}.

{emqx_retainer, true}.

{emqx_dashboard, true}.

{emqx_telemetry, true}.

{emqx_rule_engine, true}.

{emqx_bridge_mqtt, false}.

  

emqxLoadedModules: >

{emqx_mod_acl_internal, true}.

{emqx_mod_presence, true}.

{emqx_mod_trace, false}.

{emqx_mod_st_statistics, false}.

{emqx_mod_delayed, false}.

{emqx_mod_rewrite, false}.

{emqx_mod_subscription, false}.

{emqx_mod_topic_metrics, false}.

  

service:

type: LoadBalancer

mqtt: 1883

mqttssl: 8883

mgmt: 8081

ws: 8083

wss: 8084

dashboard: 18083

  

podSecurityContext:

enabled: true

fsGroup: 1000

fsGroupChangePolicy: Always

runAsUser: 1000

supplementalGroups:

- 1000

  

containerSecurityContext:

enabled: true

runAsNonRoot: true

runAsUser: 1000

helm install emqx emqx/emqx --namespace emqx --create-namespace -f ./values.yaml --wait

安装输出：

NAME: emqx

LAST DEPLOYED: Sat Feb 19 20:48:49 2022

NAMESPACE: emqx

STATUS: deployed

REVISION: 1

TEST SUITE: None

EMQX 验证

安装后查看 EMQX 集群情况：

# kubectl -n emqx get pods

NAME READY STATUS RESTARTS AGE

svclb-emqx-kbl22 6/6 Running 0 41s

emqx-0 1/1 Running 0 41s

  

# kubectl -n emqx exec -it emqx-0 -- emqx_ctl cluster status

Cluster status: #{running_nodes =>

['emqx@emqx-0.emqx-headless.emqx.svc.cluster.local'],

stopped_nodes => []}

  

# kubectl -n emqx get svc

NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE

emqx-headless ClusterIP None <none> 1883/TCP,8883/TCP,8081/TCP,8083/TCP,8084/TCP,18083/TCP,4370/TCP 86s

emqx LoadBalancer 10.43.193.192 10.<none> .245 1883:31558/TCP,8883:31122/TCP,8081:31592/TCP,8083:30322/TCP,8084:31095/TCP,18083:32427/TCP 86s

  

访问控制台：

访问 URL:18083，输入默认用户名：admin，默认密码：public，登陆 EMQX dashboard。

MQTT 消息验证：

可以通过 MQTT X: Cross-platform MQTT 5.0 Desktop Client 连接并进行收发验证。

🎉至此，EMQX（即 MQTT 服务器端） 安装完成。

EMQX 卸载

首先通过 Helm 卸载 EMQX 除存储外的所有资源：

helm uninstall emqx --namespace emqx

之后再通过 Rancher UI 或 kubectl 命令删除存储：

kubectl delete -n emqx pvc emqx-data-emqx-0

EMQX Edge

ℹ️ Info:

即 EMQX Edge 端版本

Edge 端资源较小，存储空间等可以适当设置低一点。如：size: 5Gi

部署 EMQX Edge 集群指定 image.repository=emqx/emqx-edge，其他设置与部署 EMQX 集群保持一致

...

image:

repository: emqx/emqx-edge

...

persistence:

...

size: 8Gi

...

🎉至此，EMQX Edge（即 MQTT Edge 端 Server) 安装完成。

EMQX Edge 离线安装

通过操作机（可以联网或可以通过代理上网） pull EMQX 的容器镜像到对应的镜像仓库：

ctr -n k8s.io images push --plain-http --platform=linux/arm64/v8 <local-registry>:5000/emqx/emqx-edge:4.4.0

然后正常安装即可：

🔥 Tip:

前提是本地已安装镜像仓库，且本地 docker 或其他容器运行时已经配置本地镜像仓库地址为 <docker.io> 的 mirror

helm install emqx emqx/emqx --namespace emqx --create-namespace -f ./values.yaml --wait

🎉至此，EMQX Edge（即 MQTT Edge 端 Server) 离线方式安装完成。

总结

MQTT

1. MQTT Server 通过 Helm Chart EMQX 安装，安装于：服务器/Edge 端 K3S 的 emqx namespace;

2. 安装模式：单节点

3. EMQX 版本：4.4.0

4. EMQX 实例：1 个

5. EMQX 数据已持久化，容器数据位于：/opt/emqx/data/mnesia, 持久化后的数据位于：/data/rancher/k3s/storage

6. EMQX UI 为：<locabalaner-ip>:18083, 账号密码默认为：admin 和 public

7. MQTT 地址为：<locabalaner-ip>:1883