wip: move the mongo operator

 - clean no longer used value in chart for backup
 - replace backup template by more generic keys for volume and
   volumeMount

Author: Romain JACQUET

charts/mongodb-operated/templates/mongdb-community.yaml

@@ -33,25 +33,16 @@ spec:
               resources:
                 {{- toYaml . | nindent 16 }}
               {{- end }}
+              {{- with .Values.extraVolumeMounts  }}
               volumeMounts:
-                - name: backup-volume-{{ .Release.Name }}
-                  mountPath: /backups
-                {{- if .Values.initdbScripts }}
-                - name: init-scripts
-                  mountPath: /docker-entrypoint-initdb.d
-                {{- end }}
+                {{- toYaml . | nindent 16 }}
+              {{- end }}
             - name: mongodb-agent
               imagePullPolicy: {{ .Values.image.pullPolicy }}
               {{- with .Values.agent.resources }}
               resources:
                 {{- toYaml . | nindent 16 }}
               {{- end }}
-          volumes:
-            {{- if .Values.initdbScripts }}
-            - name: init-scripts
-              configMap:
-                name: {{ .Release.Name }}-init-scripts
-            {{- end }}
       volumeClaimTemplates:
         - metadata:
             name: data-volume-{{ .Release.Name }}
@@ -61,11 +52,6 @@ spec:
             resources:
               requests:
                 storage: {{ .Values.pvc.data.size }}
-        - metadata:
-            name: backup-volume-{{ .Release.Name }}
-          spec:
-            accessModes: ["ReadWriteOnce"]
-            storageClassName: {{ .Values.pvc.backup.storageClass }}
-            resources:
-              requests:
-                storage: {{ .Values.pvc.backup.size }}
+        {{- with .Values.extraVolumeClaimTemplates }}
+          {{- toYaml . | nindent 8 }}
+        {{ end -}}

charts/mongodb-operated/values.yaml

@@ -82,9 +82,6 @@ pvc:
   data:
     storageClass: ""
     size: 10Gi
-  backup:
-    storageClass: ""
-    size: 10Gi
 
 # user configuration
 # this fied is used to fill the `spec.users` field from the MongoDBCommunity
@@ -103,3 +100,11 @@ users:
 #   - name: clusterMonitor
 #     db: admin
 #    scramCredentialsSecretName: scram-user
+
+# volume configuration for the mongo pod
+# official references:
+# https://kubernetes.io/docs/concepts/storage/persistent-volumes/
+# https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#volume-claim-templates
+
+extraVolumeMounts: []
+extraVolumeClaimTemplates: []