[stable/mariadb] Add global StorageClass to mariadb (#16420)

Signed-off-by: Miguel A. Cabrera Minagorri <macabrera@bitnami.com>

stable/mariadb/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: mariadb
-version: 6.7.4
+version: 6.8.0
 appVersion: 10.3.17
 description: Fast, reliable, scalable, and easy to use open-source relational database system. MariaDB Server is intended for mission-critical, heavy-load production systems as well as for embedding into mass-deployed software. Highly available MariaDB cluster.
 keywords:

stable/mariadb/README.md

@@ -51,6 +51,7 @@ The following table lists the configurable parameters of the MariaDB chart and t
 |-------------------------------------------|-----------------------------------------------------|-------------------------------------------------------------------|
 | `global.imageRegistry`                    | Global Docker image registry                        | `nil`                                                             |
 | `global.imagePullSecrets`                 | Global Docker registry secret names as an array     | `[]` (does not add image pull secrets to deployed pods)           |
+| `global.storageClass`                     | Global storage class for dynamic provisioning                                               | `nil`                                                        |
 | `image.registry`                          | MariaDB image registry                              | `docker.io`                                                       |
 | `image.repository`                        | MariaDB Image name                                  | `bitnami/mariadb`                                                 |
 | `image.tag`                               | MariaDB Image tag                                   | `{TAG_NAME}`                                                      |

stable/mariadb/templates/_helpers.tpl

@@ -172,3 +172,43 @@ Also, we can't use a single if because lazy evaluation is not an option
     {{- printf "%s/%s:%s" $registryName $repositoryName $tag -}}
 {{- end -}}
 {{- end -}}
+
+{{/*
+Return  the proper Storage Class for the master
+*/}}
+{{- define "mariadb.master.storageClass" -}}
+{{- $storageClass := "" }}
+{{- if .Values.master.persistence.storageClass -}}
+    {{- $storageClass = .Values.master.persistence.storageClass -}}
+{{- end -}}
+{{- if .Values.global -}}
+    {{- if .Values.global.storageClass -}}
+        {{- $storageClass = .Values.global.storageClass -}}
+    {{- end -}}
+{{- end -}}
+{{- if (eq "-" $storageClass) -}}
+    {{- printf "\"\"" -}}
+{{- else }}
+    {{- printf "%s" $storageClass -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Return  the proper Storage Class for the slave
+*/}}
+{{- define "mariadb.slave.storageClass" -}}
+{{- $storageClass := "" }}
+{{- if .Values.slave.persistence.storageClass -}}
+    {{- $storageClass = .Values.slave.persistence.storageClass -}}
+{{- end -}}
+{{- if .Values.global -}}
+    {{- if .Values.global.storageClass -}}
+        {{- $storageClass = .Values.global.storageClass -}}
+    {{- end -}}
+{{- end -}}
+{{- if (eq "-" $storageClass) -}}
+    {{- printf "\"\"" -}}
+{{- else }}
+    {{- printf "%s" $storageClass -}}
+{{- end -}}
+{{- end -}}

stable/mariadb/templates/master-statefulset.yaml

@@ -261,11 +261,5 @@ spec:
         resources:
           requests:
             storage: {{ .Values.master.persistence.size | quote }}
-      {{- if .Values.master.persistence.storageClass }}
-      {{- if (eq "-" .Values.master.persistence.storageClass) }}
-        storageClassName: ""
-      {{- else }}
-        storageClassName: {{ .Values.master.persistence.storageClass | quote }}
-      {{- end }}
-      {{- end }}
+        storageClassName: {{ include "mariadb.master.storageClass" . }}
 {{- end }}

stable/mariadb/templates/slave-statefulset.yaml

@@ -232,13 +232,7 @@ spec:
         resources:
           requests:
             storage: {{ .Values.slave.persistence.size | quote }}
-      {{- if .Values.slave.persistence.storageClass }}
-      {{- if (eq "-" .Values.slave.persistence.storageClass) }}
-        storageClassName: ""
-      {{- else }}
-        storageClassName: {{ .Values.slave.persistence.storageClass | quote }}
-      {{- end }}
-      {{- end }}
+        storageClassName: {{ include "mariadb.slave.storageClass" . }}
 {{- else }}
         - name: "data"
           emptyDir: {}

stable/mariadb/values-production.yaml

@@ -6,6 +6,7 @@
 #   imageRegistry: myRegistryName
 #   imagePullSecrets:
 #     - myRegistryKeySecretName
+#   storageClass: myStorageClass
 
 ## Use an alternate scheduler, e.g. "stork".
 ## ref: https://kubernetes.io/docs/tasks/administer-cluster/configure-multiple-schedulers/

stable/mariadb/values.yaml

@@ -6,6 +6,7 @@
 #   imageRegistry: myRegistryName
 #   imagePullSecrets:
 #     - myRegistryKeySecretName
+#   storageClass: myStorageClass
 
 ## Use an alternate scheduler, e.g. "stork".
 ## ref: https://kubernetes.io/docs/tasks/administer-cluster/configure-multiple-schedulers/