etherpad: Add network policy

etherpad/application.yml

@@ -107,3 +107,31 @@ spec:
   tls:
   - hosts:
     - "*.k-space.ee"
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: etherpad
+  namespace: etherpad
+spec:
+  podSelector:
+    matchLabels:
+      app: etherpad
+  policyTypes:
+    - Ingress
+    - Egress
+  ingress:
+    - from:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: traefik
+      ports:
+        - port: 9001
+          protocol: TCP
+  egress:
+    - ports:
+        - port: 3306
+          protocol: TCP
+      to:
+        - ipBlock:
+            cidr: 172.20.36.1/32