[stable/mongodb] Added parameter for using StatefulSet in standalone mode (#18669)

This makes it possible to configure a value to use StatefulSet instead of Deployment even if not enabling replicaSet.

Signed-off-by: Jesper Ahlberg <dargolith@dargolith.se>

stable/mongodb/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: mongodb
-version: 7.7.0
+version: 7.8.0
 appVersion: 4.0.14
 description: NoSQL document-oriented database that stores JSON-like documents with dynamic schemas, simplifying the integration of data in content-driven applications.
 keywords:

stable/mongodb/README.md

@@ -129,6 +129,7 @@ The following table lists the configurable parameters of the MongoDB chart and t
 | `persistence.size`                                 | Size of data volume                                                                                                                                       | `8Gi`                                                    |
 | `persistence.annotations`                          | Persistent Volume annotations                                                                                                                             | `{}`                                                     |
 | `persistence.existingClaim`                        | Name of an existing PVC to use (avoids creating one if this is given)                                                                                     | `nil`                                                    |
+| `useStatefulSet`                                   | Set to true to use StatefulSet instead of Deployment even when replicaSet.enalbed=false                                                                   | `nil`                                                    |
 | `extraInitContainers`                              | Additional init containers as a string to be passed to the `tpl` function                                                                                 | `{}`                                                     |
 | `livenessProbe.enabled`                            | Enable/disable the Liveness probe                                                                                                                         | `true`                                                   |
 | `livenessProbe.initialDelaySeconds`                | Delay before liveness probe is initiated                                                                                                                  | `30`                                                     |

stable/mongodb/templates/deployment-standalone.yaml

@@ -1,6 +1,6 @@
 {{- if not .Values.replicaSet.enabled }}
 apiVersion: apps/v1
-kind: Deployment
+kind: {{ if .Values.useStatefulSet }}{{ "StatefulSet" }}{{- else }}{{ "Deployment" }}{{- end }}
 metadata:
   name: {{ template "mongodb.fullname" . }}
   labels:
@@ -256,6 +256,7 @@ spec:
           name: {{ .Values.initConfigMap.name }}
       {{- end }}
       - name: data
+      {{- if not .Values.useStatefulSet }}
       {{- if .Values.persistence.enabled }}
         persistentVolumeClaim:
           claimName: {{ if .Values.persistence.existingClaim }}{{ .Values.persistence.existingClaim }}{{- else }}{{ template "mongodb.fullname" . }}{{- end }}
@@ -263,6 +264,7 @@ spec:
       {{- else }}
         emptyDir: {}
       {{- end -}}
+      {{- end -}}
       {{- if .Values.configmap }}
       - name: config
         configMap:
@@ -271,4 +273,27 @@ spec:
       {{- if .Values.extraVolumes }}
 {{ toYaml .Values.extraVolumes | indent 6}}
       {{- end }}
+{{- if .Values.useStatefulSet }}
+{{- if .Values.persistence.enabled }}
+  volumeClaimTemplates:
+    - metadata:
+        name: data
+        annotations:
+        {{- range $key, $value := .Values.persistence.annotations }}
+          {{ $key }}: "{{ $value }}"
+        {{- end }}
+      spec:
+        accessModes:
+        {{- range .Values.persistence.accessModes }}
+          - {{ . | quote }}
+        {{- end }}
+        resources:
+          requests:
+            storage: {{ .Values.persistence.size | quote }}
+        {{ include "mongodb.storageClass" . }}
+{{- else }}
+        - name: data
+          emptyDir: {}
+{{- end }}
+{{- end }}
 {{- end -}}

stable/mongodb/templates/pvc-standalone.yaml

@@ -1,4 +1,4 @@
-{{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) (not .Values.replicaSet.enabled) }}
+{{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) (not .Values.replicaSet.enabled) (not .Values.useStatefulSet) }}
 kind: PersistentVolumeClaim
 apiVersion: v1
 metadata:

stable/mongodb/values-production.yaml

@@ -147,6 +147,9 @@ service:
   ##
   # loadBalancerSourceRanges: []
 
+## Use StatefulSet instead of Deployment when deploying standalone
+useStatefulSet: false
+
 ## Setting up replication
 ## ref: https://github.com/bitnami/bitnami-docker-mongodb#setting-up-a-replication
 #

stable/mongodb/values.yaml

@@ -147,6 +147,9 @@ service:
 # Add custom extra environment variables to all the MongoDB containers
 # extraEnvVars:
 
+## Use StatefulSet instead of Deployment when deploying standalone
+useStatefulSet: false
+
 ## Setting up replication
 ## ref: https://github.com/bitnami/bitnami-docker-mongodb#setting-up-a-replication
 #