Initial commit

infrastructure/cilium/manifests/network-policies/dns.yaml

@@ -0,0 +1,23 @@
+# Allow all pods to reach CoreDNS for name resolution
+# Uses enableDefaultDeny: false to avoid blocking non-DNS egress traffic
+# Istio AuthorizationPolicies handle zero-trust enforcement at L7
+apiVersion: cilium.io/v2
+kind: CiliumClusterwideNetworkPolicy
+metadata:
+  name: allow-dns
+spec:
+  endpointSelector: {}
+  enableDefaultDeny:
+    egress: false
+    ingress: false
+  egress:
+    - toEndpoints:
+        - matchLabels:
+            k8s:io.kubernetes.pod.namespace: kube-system
+            k8s-app: kube-dns
+      toPorts:
+        - ports:
+            - port: "53"
+              protocol: UDP
+            - port: "53"
+              protocol: TCP