Add vaultwarden backup strategy

vaultwarden/cronjob.yaml

@@ -0,0 +1,25 @@
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+    name: backup-job
+    namespace: vaultwarden
+spec:
+    schedule: "0 4 * * *" # Every day at 4AM
+    concurrencyPolicy: Forbid
+    jobTemplate:
+        spec:
+            template:
+                spec:
+                    containers:
+                      - name: maria-backup
+                        image: mariadb
+                        command: ["sh", "-c", "/usr/bin/mysqldump -h vaultwarden-svc.vaultwarden.svc.cluster.local -u root -pexample vaultwarden > /backup/vaultwarden/backup-$(date +'%H_%M-%d_%m_%Y').sql"]
+                        volumeMounts:
+                          - name: vaultwarden-backup
+                            mountPath: /backup/vaultwarden
+                            subPath: vaultwarden
+                    volumes:
+                      - name: vaultwarden-backup
+                        persistentVolumeClaim:
+                            claimName: vaultwarden-backup-pvc
+                    restartPolicy: OnFailure

vaultwarden/deployment.yaml

@@ -13,6 +13,8 @@ spec:
             labels:
                 app: vaultwarden
         spec:
+            hostname: vaultwarden
+            subdomain: vaultwarden
             containers:
               - name: vaultwarden
                 image: vaultwarden/server

vaultwarden/pvc.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+    name: vaultwarden-backup-pvc
+    namespace: vaultwarden
+spec:
+    accessModes:
+      - ReadWriteOnce
+    resources:
+        requests:
+            storage: 1Gi
+    storageClassName: flat-storage-class

vaultwarden/service.yaml

@@ -9,5 +9,9 @@ spec:
           port: 80
           protocol: TCP
           targetPort: 80
+        - name: db
+          port: 3306
+          protocol: TCP
+          targetPort: 3306
     selector:
         app: vaultwarden