use statefulSets and readinessProbes instead of initContainers

clusters/default/tools/nextcloud/nextcloud-db.yml

@@ -1,6 +1,6 @@
 ---
 apiVersion: apps/v1
-kind: Deployment
+kind: StatefulSet
 metadata:
   name: nextcloud-db
   namespace: tools
@@ -8,6 +8,8 @@ spec:
   selector:
     matchLabels:
       app: nextcloud-db
+  serviceName: nextcloud-db
+  replicas: 1
   template:
     metadata:
       labels:
@@ -36,9 +38,14 @@ spec:
         - name: MARIADB_AUTO_UPGRADE
           value: "1"
         volumeMounts:
-        - name: nextcloud-db-storage
+        - name: nextcloud-db
           mountPath: /var/lib/mysql
-      volumes:
+  volumeClaimTemplates:
-      - name: nextcloud-db-storage
+  - metadata:
-        persistentVolumeClaim:
+      name: nextcloud-db
-          claimName: nextcloud-db-longhorn
+    spec:
+      accessModes: ["ReadWriteOnce"]
+      resources:
+        requests:
+          storage: 2Gi
+      storageClassName: longhorn

clusters/default/tools/nextcloud/nextcloud-pvc.yml

@@ -1,18 +1,3 @@
----
-apiVersion: v1
-kind: PersistentVolumeClaim
-metadata:
-  name: nextcloud-db-longhorn
-  namespace: tools
-spec:
-  accessModes:
-    - ReadWriteOnce
-  volumeMode: Filesystem
-  resources:
-    requests:
-      storage: 2Gi
-  storageClassName: longhorn
-
 ---
 apiVersion: v1
 kind: PersistentVolumeClaim

clusters/default/tools/nextcloud/nextcloud-svc.yml

@@ -38,7 +38,7 @@ spec:
 apiVersion: v1
 kind: Service
 metadata:
-  name: nextcloud-db-service
+  name: nextcloud-db
   namespace: tools
 spec:
   selector:
@@ -47,3 +47,4 @@ spec:
     - protocol: TCP
       port: 3306
       targetPort: 3306
+  clusterIP: None

clusters/default/tools/nextcloud/nextcloud.yml

@@ -15,20 +15,18 @@ spec:
       labels:
         app: nextcloud
     spec:
-      initContainers:
-      - name: wait-for-db
-        image: busybox
-        command:
-          - sh
-          - -c
-          - |
-            until nc -z -v -w30 nextcloud-db-service 3306; do
-              echo "Waiting for database to be ready..."
-              sleep 2
-            done
       containers:
       - name: nextcloud
         image: lscr.io/linuxserver/nextcloud:32.0.3
+        readinessProbe:
+          exec:
+            command:
+            - sh
+            - -c
+            - nc -z nextcloud-db.tools.svc.cluster.local 3306
+          initialDelaySeconds: 5
+          periodSeconds: 5
+          failureThreshold: 3
         ports:
         - containerPort: 443
         env: