feat(k8s/paperless): add paperless-ngx stack (deployment scaled to 0 for data migration)

kubernetes/app/paperless/networkpolicy.yaml

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+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: default-deny-ingress
+  namespace: paperless
+spec:
+  podSelector: {}
+  policyTypes:
+    - Ingress
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-ingress-controller
+  namespace: paperless
+spec:
+  podSelector:
+    matchLabels:
+      app: paperless
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: traefik
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-app-to-db
+  namespace: paperless
+spec:
+  podSelector:
+    matchLabels:
+      app: paperless-db
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - podSelector:
+            matchLabels:
+              app: paperless
+        - podSelector:
+            matchLabels:
+              app: paperless-backup
+      ports:
+        - port: 5432
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-app-to-redis
+  namespace: paperless
+spec:
+  podSelector:
+    matchLabels:
+      app: paperless-redis
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - podSelector:
+            matchLabels:
+              app: paperless
+      ports:
+        - port: 6379
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-app-to-gotenberg
+  namespace: paperless
+spec:
+  podSelector:
+    matchLabels:
+      app: paperless-gotenberg
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - podSelector:
+            matchLabels:
+              app: paperless
+      ports:
+        - port: 3000
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-app-to-tika
+  namespace: paperless
+spec:
+  podSelector:
+    matchLabels:
+      app: paperless-tika
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - podSelector:
+            matchLabels:
+              app: paperless
+      ports:
+        - port: 9998
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-backup-egress
+  namespace: paperless
+spec:
+  podSelector:
+    matchLabels:
+      app: paperless-backup
+  policyTypes:
+    - Egress
+  egress:
+    - ports:
+        - port: 53
+          protocol: UDP
+        - port: 53
+          protocol: TCP
+    - ports:
+        - port: 8000
+          protocol: TCP
+    - ports:
+        - port: 443
+          protocol: TCP
+    - ports:
+        - port: 5432
+          protocol: TCP
+      to:
+        - podSelector:
+            matchLabels:
+              app: paperless-db