ADD: implement migration and backup configurations for Nextcloud with Longhorn support

k3s/apps/Nextcloud/manifest/backup/mariadb-backup.yaml

@@ -0,0 +1,18 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: mariadb-backup
+  namespace: nextcloud
+spec:
+  nodeName: knode0   # <-- FIXED ON node0
+  containers:
+  - name: backup
+    image: busybox
+    command: ["sleep", "3600"]
+    volumeMounts:
+    - name: old
+      mountPath: /old
+  volumes:
+  - name: old
+    persistentVolumeClaim:
+      claimName: nextcloud-mariadb-pvc

k3s/apps/Nextcloud/manifest/config-migration-pod.yaml

@@ -0,0 +1,34 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: config-migration
+  namespace: nextcloud
+spec:
+  volumes:
+    - name: old-config
+      persistentVolumeClaim:
+        claimName: nextcloud-config-pvc
+    - name: new-config
+      persistentVolumeClaim:
+        claimName: nextcloud-config-pvc-longhorn
+  containers:
+    - name: migrator
+      image: alpine:3.18
+      volumeMounts:
+        - name: old-config
+          mountPath: /old
+        - name: new-config
+          mountPath: /new
+      command: ['sh']
+      args:
+        - -c
+        - |
+          echo "Copying config data..."
+          if [ "$(ls -A /old)" ]; then
+            cp -rv /old/* /new/ 2>/dev/null || true
+            echo "Config migration completed"
+          else
+            echo "Old config is empty"
+          fi
+          sleep infinity
+  restartPolicy: Never

k3s/apps/Nextcloud/manifest/longhornmirgation/apps-migration-pod.yaml

@@ -0,0 +1,34 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: apps-migration
+  namespace: nextcloud
+spec:
+  volumes:
+    - name: old-apps
+      persistentVolumeClaim:
+        claimName: nextcloud-apps-pvc
+    - name: new-apps
+      persistentVolumeClaim:
+        claimName: nextcloud-apps-pvc-longhorn
+  containers:
+    - name: migrator
+      image: alpine:3.18
+      volumeMounts:
+        - name: old-apps
+          mountPath: /old
+        - name: new-apps
+          mountPath: /new
+      command: ['sh']
+      args:
+        - -c
+        - |
+          echo "Copying apps data..."
+          if [ "$(ls -A /old)" ]; then
+            cp -rv /old/* /new/ 2>/dev/null || true
+            echo "Apps migration completed"
+          else
+            echo "Old apps is empty"
+          fi
+          sleep infinity
+  restartPolicy: Never

k3s/apps/Nextcloud/manifest/longhornmirgation/mariadb-longhorn-pvc.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: nextcloud-mariadb-pvc-longhorn
+  namespace: nextcloud
+spec:
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: longhorn
+  resources:
+    requests:
+      storage: 10Gi

k3s/apps/Nextcloud/manifest/longhornmirgation/mariadb-restore.yaml

@@ -0,0 +1,24 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: mariadb-restore
+  namespace: nextcloud
+spec:
+  nodeName: knode0
+  containers:
+  - name: restore
+    image: busybox
+    command: ["sleep", "3600"]
+    volumeMounts:
+    - name: new
+      mountPath: /new
+    - name: oldbackup
+      mountPath: /backup
+  volumes:
+  - name: new
+    persistentVolumeClaim:
+      claimName: nextcloud-mariadb-pvc-longhorn
+  - name: oldbackup
+    hostPath:
+      path: /var/lib/nextcloud/mariadb-backup
+      type: DirectoryOrCreate

k3s/apps/Nextcloud/manifest/mariadb-deployment.yaml

@@ -28,6 +28,11 @@ spec:
               value: nextcloud
           ports:
             - containerPort: 3306
+          readinessProbe:
+            tcpSocket:
+              port: 3306
+            initialDelaySeconds: 5
+            periodSeconds: 10
           resources:
             requests:
               memory: "256Mi"
@@ -41,4 +46,4 @@ spec:
       volumes:
         - name: mariadb-data
           persistentVolumeClaim:
-            claimName: nextcloud-mariadb-pvc
+            claimName: nextcloud-mariadb-pvc-longhorn

k3s/apps/Nextcloud/manifest/mariadb-pv-pvc.yaml

@@ -9,24 +9,4 @@ spec:
   resources:
     requests:
       storage: 10Gi
-  storageClassName: local-path   # <-- explicit default StorageClass
----
-apiVersion: v1
-kind: PersistentVolume
-metadata:
-  name: nextcloud-mariadb-pv
-  labels:
-    app: mariadb
-spec:
-  capacity:
-    storage: 10Gi
-  accessModes:
-    - ReadWriteOnce
-  persistentVolumeReclaimPolicy: Retain
-  storageClassName: local-path
-  claimRef:
-    namespace: nextcloud
-    name: nextcloud-mariadb-pvc
-  hostPath:
-    path: /var/lib/nextcloud/mariadb-data
-    type: DirectoryOrCreate
+  storageClassName: longhorn

k3s/apps/Nextcloud/manifest/nextcloud-apps-pvc-longhorn.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: nextcloud-apps-pvc-longhorn
+  namespace: nextcloud
+spec:
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: longhorn
+  resources:
+    requests:
+      storage: 1Gi

k3s/apps/Nextcloud/manifest/nextcloud-config-pvc-longhorn.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: nextcloud-config-pvc-longhorn
+  namespace: nextcloud
+spec:
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: longhorn
+  resources:
+    requests:
+      storage: 5Gi

k3s/apps/Nextcloud/manifest/nextcloud-deployment.yaml

@@ -16,12 +16,19 @@ spec:
       # fsGroup sorgt dafür, dass gemountete Volumes die Gruppe www-data (33) bekommen
       securityContext:
         fsGroup: 33
+      # Auf knode0 zwingen (hat Kernel 6.1 mit NFS - Kompatibilität)
+      nodeSelector:
+        kubernetes.io/hostname: knode0
       # hostAliases mappt die öffentliche Domain intern auf die Service-ClusterIP,
       # damit der Pod henryathome.home64.de direkt intern erreicht (vermeidet externe Loopback/Firewall/403)
       hostAliases:
         - ip: "10.43.107.87"
           hostnames:
             - "henryathome.home64.de"
+      initContainers:
+        - name: wait-for-mariadb
+          image: busybox:1.34
+          command: ['sh', '-c', 'until nc -z mariadb.nextcloud.svc.cluster.local 3306; do echo waiting for mariadb; sleep 2; done;']
       containers:
         - name: nextcloud
           image: nextcloud:33-apache
@@ -73,7 +80,7 @@ spec:
             claimName: nextcloud-data-pvc
         - name: config
           persistentVolumeClaim:
-            claimName: nextcloud-config-pvc
+            claimName: nextcloud-config-pvc-longhorn
         - name: apps
           persistentVolumeClaim:
-            claimName: nextcloud-apps-pvc
+            claimName: nextcloud-apps-pvc-longhorn

k3s/apps/Nextcloud/manifest/nextcloud-pv-pvc.yaml

@@ -10,10 +10,13 @@ spec:
   persistentVolumeReclaimPolicy: Retain
   storageClassName: nfs
   mountOptions:
-    - vers=4
+    - vers=3
     - rsize=65536
     - wsize=65536
     - noatime
+    - soft
+    - timeo=20
+    - retrans=2
   nfs:
     server: 192.168.178.186   # <-- ERSETZEN: IP oder Hostname deiner NAS
     path: /volume1/Nextcloud/data    # <-- ERSETZEN: Pfad zum Share auf der NAS (z.B. /volume1/nextcloud)