[MARIADB] Provide S3 Backup for MariaDB instances

Using the mariadb-operator version 0.24.0 a backup to
S3 storages is supported and implemented in the
templates and mariadb chart
Add a missing mariadbOperator config for mariadb-init

Issue-ID: OOM-3264

Change-Id: I065053832c226740b2a3b64b065cecc599f28296
Signed-off-by: Andreas Geissler <andreas-geissler@telekom.de>

5 files changed, 57 insertions, 24 deletions

diff --git a/kubernetes/common/common/Chart.yaml b/kubernetes/common/common/Chart.yaml
index 4025924f80..129454681e 100644
--- a/kubernetes/common/common/Chart.yaml
+++ b/kubernetes/common/common/Chart.yaml
@@ -16,4 +16,4 @@
 apiVersion: v2
 description: Common templates for inclusion in other charts
 name: common
-version: 13.0.2
+version: 13.0.3
diff --git a/kubernetes/common/common/templates/_mariadb.tpl b/kubernetes/common/common/templates/_mariadb.tpl
index a2d4117e5c..a0dd49d750 100644
--- a/kubernetes/common/common/templates/_mariadb.tpl
+++ b/kubernetes/common/common/templates/_mariadb.tpl
@@ -80,7 +80,7 @@
     {{- index .Values "mariadb-galera" "nameOverride" -}}
   {{-   end }}
   {{- else -}}
-  {{-   if and .Values.global.mariadbGalera.useOperator }}
+  {{-   if .Values.global.mariadbGalera.useOperator }}
     {{- printf "%s-primary" (.Values.global.mariadbGalera.service) }}
   {{-   else }}
     {{- .Values.global.mariadbGalera.service -}}
@@ -194,26 +194,37 @@ spec:
 {{- define "common.mariadbOpBackup" -}}
 {{- $dot := default . .dot -}}
 {{- $dbinst := include "common.name" $dot -}}
+{{- $name := default $dbinst $dot.Values.backup.nameOverride -}}
+---
+apiVersion: mariadb.mmontes.io/v1alpha1
 kind: Backup
 metadata:
-  name: backup-scheduled
+  name: {{ $name }}
 spec:
   mariaDbRef:
     name: {{ $dbinst }}
   schedule:
-    cron: "*/1 * * * *"
+    cron: {{ $dot.Values.backup.cron }}
     suspend: false
-  maxRetentionDays: 30
+  maxRetention: {{ $dot.Values.backup.maxRetention }}
   storage:
+    {{- if eq $dot.Values.backup.storageType "PVC" }}
     persistentVolumeClaim:
       resources:
         requests:
-          storage: 100Mi
-      {{- if .Values.mariadbOperator.storageClassName }}
-      storageClassName: {{ .Values.mariadbOperator.storageClassName }}
+          storage: {{ $dot.Values.backup.persistence.size }}
+      {{- if $dot.Values.mariadbOperator.storageClassName }}
+      storageClassName: {{ $dot.Values.mariadbOperator.storageClassName }}
       {{- end }}
       accessModes:
-        - ReadWriteOnce
+        - {{ $dot.Values.backup.persistence.accessMode }}
+    {{- end }}
+    {{- if eq $dot.Values.backup.storageType "S3" }}
+    s3: {{- include "common.tplValue" ( dict "value" .Values.backup.s3 "context" $) | nindent 6 }}
+    {{- end }}
+    {{- if eq $dot.Values.backup.storageType "volume" }}
+    volume: {{- include "common.tplValue" ( dict "value" .Values.backup.volume "context" $) | nindent 6 }}
+    {{- end }}
   resources:
     requests:
       cpu: 100m
@@ -308,6 +319,10 @@ spec:
     initialDelaySeconds: 20
     periodSeconds: 10
     timeoutSeconds: 5
+  {{- if default false .Values.global.metrics.enabled }}
+  metrics:
+    enabled: true
+  {{- end }}
   affinity:
     podAntiAffinity:
       requiredDuringSchedulingIgnoredDuringExecution:
@@ -320,19 +335,6 @@ spec:
     maxUnavailable: 50%
   updateStrategy:
     type: RollingUpdate
-  #myCnf: |
-  #  [mysqld]
-  #  bind-address=0.0.0.0
-  #  default_storage_engine=InnoDB
-  #  binlog_format=row
-  #  innodb_autoinc_lock_mode=2
-  #  max_allowed_packet=256M
-  #  lower_case_table_names = 1
-
-  #  ## Character set
-  #  collation_server=utf8_unicode_ci
-  #  init_connect='SET NAMES utf8'
-  #  character_set_server=utf8
 
   myCnfConfigMapKeyRef:
     key: my.cnf
diff --git a/kubernetes/common/mariadb-galera/Chart.yaml b/kubernetes/common/mariadb-galera/Chart.yaml
index 71ff421d7b..470e64b5f1 100644
--- a/kubernetes/common/mariadb-galera/Chart.yaml
+++ b/kubernetes/common/mariadb-galera/Chart.yaml
@@ -18,7 +18,7 @@
 apiVersion: v2
 description: Chart for MariaDB Galera cluster
 name: mariadb-galera
-version: 13.0.1
+version: 13.1.0
 keywords:
   - mariadb
   - mysql
diff --git a/kubernetes/common/mariadb-galera/values.yaml b/kubernetes/common/mariadb-galera/values.yaml
index 991c635749..be7ad8ef07 100644
--- a/kubernetes/common/mariadb-galera/values.yaml
+++ b/kubernetes/common/mariadb-galera/values.yaml
@@ -267,8 +267,16 @@ galera:
 ## For this reason the db data pvc needs to have accessMode: ReadWriteMany.
 backup:
   enabled: false
+  # used in the mariadb-operator to override the backup name (default is DBName)
+  # nameOverride:
+  # defines the backup job execution period
   cron: "00 00 * * *"
+  # used by mariadb-operator to set the max retention time
+  maxRetention: 720h
   retentionPeriod: 3
+  # used by mariadb-operator to set the backup storage type (PVC, S3, volume)
+  storageType: PVC
+  # configuration used for PVC backup storage
   persistence:
     ## If true, use a Persistent Volume Claim, If false, use emptyDir
     ##
@@ -297,7 +305,27 @@ backup:
     ## Persistent Volume size
     ##
     size: 2Gi
-
+  # requires mariadb-operator v0.24.0
+  # configuration used for S3 backup storage
+  # see: https://github.com/mariadb-operator/mariadb-operator/blob/main/docs/BACKUP.md
+  s3:
+    bucket: backups
+    endpoint: minio.minio.svc.cluster.local:9000
+    #region:  us-east-1
+    accessKeyIdSecretKeyRef:
+      name: minio
+      key: access-key-id
+    secretAccessKeySecretKeyRef:
+      name: minio
+      key: secret-access-key
+    tls:
+      enabled: false
+      caSecretKeyRef:
+        name: minio-ca
+        key: ca.crt
+  # configuration used for kubernetes volumes as backup storage
+  # see: https://github.com/mariadb-operator/mariadb-operator/blob/main/docs/BACKUP.md
+  volume: {}
 
 readinessCheck:
   wait_for:
diff --git a/kubernetes/common/mariadb-init/values.yaml b/kubernetes/common/mariadb-init/values.yaml
index 2d5de97e7c..fb2e202fd0 100644
--- a/kubernetes/common/mariadb-init/values.yaml
+++ b/kubernetes/common/mariadb-init/values.yaml
@@ -81,6 +81,9 @@ mariadb-galera:
   service:
     internalPort: 3306
   nameOverride: mariadb-galera
+  mariadbOperator:
+    galera:
+      enabled: false
 
 config:
   userPassword: Ci@shsOd3pky1Vji