use statefulSets and readinessProbes instead of initContainers

clusters/default/tools/paperless-ngx/paperless-ngx-db.yml

@@ -1,15 +1,15 @@
 ---
 apiVersion: apps/v1
-kind: Deployment
+kind: StatefulSet
 metadata:
   name: paperless-ngx-db
   namespace: tools
 spec:
-  strategy:
-    type: Recreate
   selector:
     matchLabels:
       app: paperless-ngx-db
+  serviceName: paperless-ngx-db
+  replicas: 1
   template:
     metadata:
       labels:
@@ -21,10 +21,15 @@ spec:
         ports:
         - containerPort: 6379
         volumeMounts:
-        - name: data
+        - name: paperless-ngx-db
           mountPath: /data
           subPath: redis
-      volumes:
-      - name: data
-        persistentVolumeClaim:
-          claimName: paperless-db-longhorn
+  volumeClaimTemplates:
+  - metadata:
+      name: paperless-ngx-db
+    spec:
+      accessModes: ["ReadWriteOnce"]
+      resources:
+        requests:
+          storage: 500Mi
+      storageClassName: longhorn

clusters/default/tools/paperless-ngx/paperless-ngx-svc.yml

@@ -19,7 +19,7 @@ spec:
 apiVersion: v1
 kind: Service
 metadata:
-  name: paperless-ngx-db-service
+  name: paperless-ngx-db
   namespace: tools
 spec:
   selector:

clusters/default/tools/paperless-ngx/paperless-ngx.yml

@@ -15,18 +15,24 @@ spec:
       labels:
         app: paperless-ngx
     spec:
-      initContainers:
-      - name: wait-for-redis
-        image: busybox:latest
-        command: ['sh', '-c', 'until nc -z paperless-ngx-db-service 6379; do echo waiting for redis; sleep 2; done;']
       containers:
       - name: paperless-ngx
         image: ghcr.io/paperless-ngx/paperless-ngx:2.20.2
+        readinessProbe:
+          exec:
+            command:
+            - bash
+            - -c
+            - |
+              (echo >/dev/tcp/paperless-ngx-db.tools.svc.cluster.local/6379)
+          initialDelaySeconds: 5
+          periodSeconds: 5
+          failureThreshold: 3
         ports:
         - containerPort: 8000
         env:
         - name: PAPERLESS_REDIS
-          value: "redis://paperless-ngx-db-service:6379"
+          value: "redis://paperless-ngx-db.tools.svc.cluster.local:6379"
         - name: PAPERLESS_URL
           valueFrom:
             secretKeyRef:
@@ -47,9 +53,9 @@ spec:
         - name: PAPERLESS_TIKA_ENABLED
           value: "1"
         - name: PAPERLESS_TIKA_ENDPOINT
-          value: "http://tika-service:9998"
+          value: "http://tika-service.tools.svc.cluster.local:9998"
         - name: PAPERLESS_TIKA_GOTENBERG_ENDPOINT
-          value: "http://gotenberg-service:3000"
+          value: "http://gotenberg-service.tools.svc.cluster.local:3000"
         volumeMounts:
         - name: data
           mountPath: /usr/src/paperless/data

clusters/default/tools/paperless-ngx/paperless-pvc.yml

@@ -12,18 +12,3 @@ spec:
     requests:
       storage: 2Gi
   storageClassName: longhorn
-
----
-apiVersion: v1
-kind: PersistentVolumeClaim
-metadata:
-  name: paperless-db-longhorn
-  namespace: tools
-spec:
-  accessModes:
-    - ReadWriteOnce
-  volumeMode: Filesystem
-  resources:
-    requests:
-      storage: 1Gi
-  storageClassName: longhorn