veza/k8s/network-policies/chat-server-allow.yaml

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# Chat Server: allow ingress from ingress controller, egress to Redis, PostgreSQL, DNS
# WebSocket connections; depends on Redis for pub/sub
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: chat-server-allow
namespace: veza-production
spec:
podSelector:
matchLabels:
app: veza-chat-server
policyTypes:
- Ingress
- Egress
ingress:
- from:
- namespaceSelector:
matchLabels:
name: ingress-nginx
ports:
- protocol: TCP
port: 8081
- from:
- podSelector: {}
ports:
- protocol: TCP
port: 8081
egress:
- to:
- ipBlock:
cidr: 0.0.0.0/0
ports:
- protocol: TCP
port: 5432
- protocol: TCP
port: 6379
- to:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: kube-system
ports:
- protocol: UDP
port: 53