我想要通过helm安装一个不落盘的emqx，但是又有需求进行客户端认证配置，通过测试发现，通过环境变量注入例如EMQX_AUTHENTICATION__BACKEND等，容器内会提示无法识别该变量，也许是社区版不支持，但是修改emqx.conf是可以完成初始化配置的。
我的最终解决方案是通过修改helm文件，新增一个configmap，用来替换容器内默认的emqx.conf文件。
获取helm文件
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| helm repo add emqx-operator https://repos.emqx.io/charts
helm pull emqx-operator/emqx --version 5.7.1
|
修改文件
增加配置文件模板
template目录中新增emqx_config.yaml，相比原生配置增加了authentication这一段内容，如果需要进行修改可参考官方文档
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| {{- if .Values.authentication }}
apiVersion: v1
kind: ConfigMap
metadata:
name: emqx-config
namespace: {{ .Values.namespace }}
data:
emqx.conf: |-
node {
name = "emqx@127.0.0.1"
cookie = "emqxsecretcookie"
data_dir = "data"
}
cluster {
name = emqxcl
discovery_strategy = manual
}
log {
}
dashboard {
listeners.http {
bind = 18083
}
}
authentication {
mechanism = "password_based"
backend = "mysql"
password_hash_algorithm = {
name = "sha256",
salt_position = "suffix"
}
query = "SELECT password_hash, salt FROM mqtt_user where username = ${username} LIMIT 1"
query_timeout = "5s"
server = "{{ .Values.authenticationConfig.server }}"
database = "{{ .Values.authenticationConfig.database }}"
username = "{{ .Values.authenticationConfig.username }}"
password = "{{ .Values.authenticationConfig.password }}"
}
{{- end }}
|
修改values.yaml
新增如下内容，用来控制是否开启认证
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|
authentication: true
authenticationConfig:
server: mysql-primary.mysql
database: mqtt_user
username: sylink
password: sylink
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修改StatefulSet.yaml
修改了volume和volumes内容，挂载配置文件
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| apiVersion: apps/v1
kind: StatefulSet
metadata:
name: {{ include "emqx.fullname" . }}
namespace: {{ .Release.Namespace }}
labels:
app.kubernetes.io/name: {{ include "emqx.name" . }}
helm.sh/chart: {{ include "emqx.chart" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
spec:
serviceName: {{ include "emqx.fullname" . }}-headless
podManagementPolicy: {{ .Values.podManagementPolicy }}
{{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) }}
volumeClaimTemplates:
- metadata:
name: emqx-data
namespace: {{ .Release.Namespace }}
labels:
app.kubernetes.io/name: {{ include "emqx.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
spec:
{{- if .Values.persistence.storageClassName }}
storageClassName: {{ .Values.persistence.storageClassName | quote }}
{{- end }}
accessModes:
- {{ .Values.persistence.accessMode | quote }}
resources:
requests:
storage: {{ .Values.persistence.size | quote }}
{{- end }}
updateStrategy:
type: RollingUpdate
{{- if .Values.minReadySeconds }}
minReadySeconds: {{ .Values.minReadySeconds }}
{{- end }}
replicas: {{ .Values.replicaCount }}
selector:
matchLabels:
app.kubernetes.io/name: {{ include "emqx.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
template:
metadata:
labels:
app: {{ include "emqx.name" . }}
version: {{ .Chart.AppVersion }}
app.kubernetes.io/name: {{ include "emqx.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
annotations:
{{- with .Values.podAnnotations }}
{{- toYaml . | nindent 8 }}
{{- end }}
{{- if .Values.recreatePods }}
checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum | quote }}
{{- end }}
spec:
serviceAccountName: {{ include "emqx.serviceAccountName" . }}
{{- if .Values.priorityClassName }}
priorityClassName: {{ .Values.priorityClassName }}
{{- end }}
volumes:
{{- if .Values.ssl.enabled }}
- name: ssl-cert
secret:
secretName: {{ include "emqx.ssl.secretName" . }}
{{- end }}
{{- if not .Values.persistence.enabled }}
- name: emqx-data
emptyDir: {}
{{- else if .Values.persistence.existingClaim }}
- name: emqx-data
persistentVolumeClaim:
{{- with .Values.persistence.existingClaim }}
claimName: {{ tpl . $ }}
{{- end }}
{{- end }}
{{- if .Values.emqxLicenseSecretName }}
- name: emqx-license
secret:
secretName: {{ .Values.emqxLicenseSecretName }}
{{- end }}
{{- if .Values.authentication }}
- name: emqx-config
configMap:
name: emqx-config
{{- end }}
{{- if .Values.extraVolumes }}
{{- toYaml .Values.extraVolumes | nindent 6 }}
{{- end }}
{{- if .Values.podSecurityContext.enabled }}
securityContext: {{- omit .Values.podSecurityContext "enabled" | toYaml | nindent 8 }}
{{- end }}
{{- if .Values.initContainers }}
initContainers:
{{- toYaml .Values.initContainers | nindent 8 }}
{{- end }}
{{- if .Values.image.pullSecrets }}
imagePullSecrets:
{{- range .Values.image.pullSecrets }}
- name: {{ . }}
{{- end }}
{{- end }}
containers:
- name: emqx
image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
{{- if .Values.containerSecurityContext.enabled }}
securityContext: {{- omit .Values.containerSecurityContext "enabled" | toYaml | nindent 12 }}
{{- end }}
ports:
- name: mqtt
containerPort: {{ splitList ":" ( .Values.emqxConfig.EMQX_LISTENERS__TCP__DEFAULT__BIND | default "1883" ) | last }}
- name: mqttssl
containerPort: {{ splitList ":" ( .Values.emqxConfig.EMQX_LISTENERS__SSL__DEFAULT__BIND | default "8883" ) | last }}
- name: ws
containerPort: {{ splitList ":" ( .Values.emqxConfig.EMQX_LISTENERS__WS__DEFAULT__BIND | default "8083" ) | last }}
- name: wss
containerPort: {{ splitList ":" ( .Values.emqxConfig.EMQX_LISTENERS__WSS__DEFAULT__BIND | default "8084" ) | last }}
- name: dashboard
containerPort: {{ splitList ":" ( .Values.emqxConfig.EMQX_DASHBOARD__LISTENERS__HTTP__BIND | default "18083" ) | last }}
{{- if not (empty .Values.emqxConfig.EMQX_DASHBOARD__LISTENERS__HTTPS__BIND) }}
- name: dashboardtls
containerPort: {{ splitList ":" .Values.emqxConfig.EMQX_DASHBOARD__LISTENERS__HTTPS__BIND | last }}
{{- end }}
- name: ekka
containerPort: 4370
- name: genrpc-manual
containerPort: 5369
envFrom:
- configMapRef:
name: {{ include "emqx.fullname" . }}-env
{{- if .Values.envFromSecret }}
- secretRef:
name: {{ .Values.envFromSecret }}
{{- end }}
resources:
{{ toYaml .Values.resources | indent 12 }}
volumeMounts:
- name: emqx-data
mountPath: "/opt/emqx/data"
{{- if .Values.ssl.enabled }}
- name: ssl-cert
mountPath: /tmp/ssl
readOnly: true
{{- end}}
{{ if .Values.emqxLicenseSecretName }}
- name: emqx-license
mountPath: "/opt/emqx/etc/emqx.lic"
subPath: "emqx.lic"
readOnly: true
{{- end }}
{{- if .Values.authentication }}
- name: emqx-config
mountPath: "/opt/emqx/etc/emqx.conf"
subPath: "emqx.conf"
readOnly: true
{{- end }}
{{- if .Values.extraVolumeMounts }}
{{- toYaml .Values.extraVolumeMounts | nindent 10 }}
{{- end }}
readinessProbe:
httpGet:
path: /status
port: {{ splitList ":" ( .Values.emqxConfig.EMQX_DASHBOARD__LISTENERS__HTTP__BIND | default "18083" ) | last }}
initialDelaySeconds: 10
periodSeconds: 5
failureThreshold: 30
livenessProbe:
httpGet:
path: /status
port: {{ splitList ":" ( .Values.emqxConfig.EMQX_DASHBOARD__LISTENERS__HTTP__BIND | default "18083" ) | last }}
initialDelaySeconds: 60
periodSeconds: 30
failureThreshold: 10
{{- with .Values.nodeSelector }}
nodeSelector:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.affinity }}
affinity:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.tolerations }}
tolerations:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.topologySpreadConstraints }}
topologySpreadConstraints:
{{- range . }}
- maxSkew: {{ .maxSkew }}
topologyKey: {{ .topologyKey }}
whenUnsatisfiable: {{ .whenUnsatisfiable }}
labelSelector:
matchLabels:
app.kubernetes.io/name: {{ include "emqx.name" $ }}
app.kubernetes.io/instance: {{ $.Release.Name }}
{{- if .minDomains }}
minDomains: {{ .minDomains }}
{{- end }}
{{- if .matchLabelKeys }}
matchLabelKeys:
{{- range .matchLabelKeys }}
- {{ . }}
{{- end }}
{{- end }}
{{- if .nodeAffinityPolicy }}
nodeAffinityPolicy: {{ .nodeAffinityPolicy }}
{{- end }}
{{- if .nodeTaintsPolicy }}
nodeTaintsPolicy: {{ .nodeTaintsPolicy }}
{{- end }}
{{- end }}
{{- end }}
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参考：
helm仓库地址：
https://artifacthub.io/packages/helm/emqx-operator/emqx/5.7.1
官方emqx配置文档：
https://docs.emqx.com/zh/emqx/latest/configuration/configuration.html#%E7%8E%AF%E5%A2%83%E5%8F%98%E9%87%8F
https://docs.emqx.com/zh/enterprise/v5.10.0/hocon/#T-authentication-S-mysql
