fix and enhance helm db config (#12707)

deploy/kubernetes/dolphinscheduler/templates/_helpers.tpl

@@ -139,9 +139,9 @@ Create a database environment variables.
   {{- end }}
 - name: SPRING_DATASOURCE_URL
   {{- if .Values.postgresql.enabled }}
-  value: jdbc:postgresql://{{ template "dolphinscheduler.postgresql.fullname" . }}:5432/{{ .Values.postgresql.postgresqlDatabase }}?characterEncoding=utf8
+  value: jdbc:postgresql://{{ template "dolphinscheduler.postgresql.fullname" . }}:5432/{{ .Values.postgresql.postgresqlDatabase }}?{{ .Values.postgresql.params }}
   {{- else if .Values.mysql.enabled }}
-  value: jdbc:mysql://{{ template "dolphinscheduler.mysql.fullname" . }}:3306/{{ .Values.postgresql.postgresqlDatabase }}?characterEncoding=utf8
+  value: jdbc:mysql://{{ template "dolphinscheduler.mysql.fullname" . }}:3306/{{ .Values.mysql.auth.database }}?{{ .Values.mysql.auth.params }}
   {{- else }}
   value: jdbc:{{ .Values.externalDatabase.type }}://{{ .Values.externalDatabase.host }}:{{ .Values.externalDatabase.port }}/{{ .Values.externalDatabase.database }}?{{ .Values.externalDatabase.params }}
   {{- end }}

deploy/kubernetes/dolphinscheduler/values.yaml

@@ -38,6 +38,7 @@ postgresql:
   postgresqlUsername: "root"
   postgresqlPassword: "root"
   postgresqlDatabase: "dolphinscheduler"
+  params: "characterEncoding=utf8"
   persistence:
     enabled: false
     size: "20Gi"
@@ -49,6 +50,7 @@ mysql:
     username: "ds"
     password: "ds"
     database: "dolphinscheduler"
+    params: "characterEncoding=utf8"
   primary:
     persistence:
       enabled: false