fix(helm): fix helm value explain error

Fixed EMQX Helm Chart can not set JSON type value for EMQX configuration items

changes/v4.4.12-en.md

@@ -13,3 +13,5 @@
 - When dashboard creates a new user, the password length must match 3-32 and the format is `^[A-Za-z0-9]+[A-Za-z0-9-_]*$` [#9475](https://github.com/emqx/emqx-enterprise/pull/9475).
 
 - Fixed EMQX Helm Chart using incorrect secret values when custom credentials are provided [#9508](https://github.com/emqx/emqx/pull/9508).
+
+- Fixed EMQX Helm Chart can not set JSON type value for EMQX Broker configuration items [#9504](https://github.com/emqx/emqx/pull/9504).

changes/v4.4.12-zh.md

@@ -12,4 +12,6 @@
 
 - 当控制台创建新用户时，密码长度必须在 3-32 之间，且格式为 `^[A-Za-z0-9]+[A-Za-z0-9-_]*$` [#9475](https://github.com/emqx/emqx-enterprise/pull/9475)。
 
-- 修复了 EMQX Helm Chart 中当用户使用自定义的用户名和密码时，创建的 Secret 资源不正确问题 [#9508](https://github.com/emqx/emqx/pull/9508).
+- 修复了 EMQX Helm Chart 中当用户使用自定义的用户名和密码时，创建的 Secret 资源不正确问题 [#9508](https://github.com/emqx/emqx/pull/9508)。
+
+- 修复 EMQX Helm Chart 无法配置 value 为 JSON 类型的 EMQX Broker 配置项 [#9504](https://github.com/emqx/emqx/pull/9504)。

deploy/charts/emqx/templates/configmap.env.yaml

@@ -17,17 +17,20 @@ data:
   EMQX_CLUSTER__K8S__SERVICE_NAME:  {{ include "emqx.fullname" . }}-headless
   EMQX_CLUSTER__K8S__NAMESPACE: {{ .Release.Namespace }}
   EMQX_CLUSTER__K8S__ADDRESS_TYPE: "hostname"
-  EMQX_CLUSTER__K8S__SUFFIX: "svc.cluster.local"  
+  EMQX_CLUSTER__K8S__SUFFIX: "svc.cluster.local"
   {{- else if eq (.Values.emqxConfig.EMQX_CLUSTER__DISCOVERY)  "dns"  }}
-  EMQX_CLUSTER__DNS__NAME: "{{ .Release.Name }}-headless.{{ .Release.Namespace }}.svc.cluster.local"
   EMQX_CLUSTER__DNS__APP: {{ .Release.Name }}
+  EMQX_CLUSTER__DNS__NAME: "{{ include "emqx.fullname" . }}-headless.{{ .Release.Namespace }}.svc.cluster.local"
   EMQX_CLUSTER__DNS__TYPE: "srv"
   {{- end -}}
   {{- range $index, $value := .Values.emqxConfig }}
   {{- if $value }}
   {{- $key := (regexReplaceAllLiteral "\\." (regexReplaceAllLiteral "EMQX[_\\.]" (upper (trimAll " " $index)) "") "__") }}
+  {{- if or (kindIs "map" $value) (kindIs "slice" $value) }}
+  {{ print "EMQX_" $key }}: {{ tpl (printf "%q" (toJson $value)) $ }}
+  {{- else }}
   {{ print "EMQX_" $key }}: "{{ tpl (printf "%v" $value) $ }}"
   {{- end }}
-  {{- end}}
-
+  {{- end }}
+  {{- end }}
 {{- end }}

deploy/charts/emqx/values.yaml

@@ -72,7 +72,7 @@ initContainers: {}
 
 ## EMQX configuration item, see the documentation (https://hub.docker.com/r/emqx/emqx)
 emqxConfig:
-  ## Cluster discovery by k8s
+  ## Cluster discovery by 'k8s' or 'dns'
   EMQX_CLUSTER__DISCOVERY: "k8s"
   EMQX_MANAGEMENT__DEFAULT_APPLICATION__ID: "admin"
   EMQX_MANAGEMENT__DEFAULT_APPLICATION__SECRET: "public"