prvng_platform/crates/rag/k8s/06-hpa-ingress.yaml

---
# Horizontal Pod Autoscaler for RAG Service
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
  name: provisioning-rag-hpa
  namespace: provisioning-rag
  labels:
    app: provisioning-rag
    component: autoscaling
spec:
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: provisioning-rag
  minReplicas: 3
  maxReplicas: 10
  metrics:
    # Scale based on CPU usage
    - type: Resource
      resource:
        name: cpu
        target:
          type: Utilization
          averageUtilization: 70
    # Scale based on memory usage
    - type: Resource
      resource:
        name: memory
        target:
          type: Utilization
          averageUtilization: 80
  behavior:
    scaleDown:
      stabilizationWindowSeconds: 300
      policies:
        - type: Percent
          value: 50
          periodSeconds: 60
        - type: Pods
          value: 1
          periodSeconds: 120
      selectPolicy: Min
    scaleUp:
      stabilizationWindowSeconds: 0
      policies:
        - type: Percent
          value: 100
          periodSeconds: 30
        - type: Pods
          value: 2
          periodSeconds: 30
      selectPolicy: Max

---
# Ingress for RAG Service
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: provisioning-rag-ingress
  namespace: provisioning-rag
  labels:
    app: provisioning-rag
    component: ingress
  annotations:
    cert-manager.io/cluster-issuer: letsencrypt-prod
    nginx.ingress.kubernetes.io/rewrite-target: /
    nginx.ingress.kubernetes.io/rate-limit: "100"
    nginx.ingress.kubernetes.io/rate-limit-window: "60s"
    nginx.ingress.kubernetes.io/ssl-redirect: "true"
    nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
    nginx.ingress.kubernetes.io/proxy-body-size: "10m"
    nginx.ingress.kubernetes.io/proxy-connect-timeout: "30"
    nginx.ingress.kubernetes.io/proxy-send-timeout: "30"
    nginx.ingress.kubernetes.io/proxy-read-timeout: "30"
spec:
  ingressClassName: nginx
  tls:
    - hosts:
        - rag.example.com
      secretName: rag-tls-cert
  rules:
    - host: rag.example.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: provisioning-rag
                port:
                  number: 9090
          - path: /metrics
            pathType: Prefix
            backend:
              service:
                name: provisioning-rag
                port:
                  number: 8888

---
# NetworkPolicy for RAG Service (security)
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: provisioning-rag-netpol
  namespace: provisioning-rag
  labels:
    app: provisioning-rag
    component: networking
spec:
  podSelector:
    matchLabels:
      app: provisioning-rag
  policyTypes:
    - Ingress
    - Egress
  ingress:
    # Allow from Ingress Controller
    - from:
        - namespaceSelector:
            matchLabels:
              name: ingress-nginx
      ports:
        - protocol: TCP
          port: 9090
    # Allow from Prometheus
    - from:
        - podSelector:
            matchLabels:
              app: prometheus
      ports:
        - protocol: TCP
          port: 8888
    # Allow from other RAG pods
    - from:
        - podSelector:
            matchLabels:
              app: provisioning-rag
      ports:
        - protocol: TCP
          port: 9090
  egress:
    # Allow DNS
    - to:
        - namespaceSelector: {}
      ports:
        - protocol: UDP
          port: 53
    # Allow to SurrealDB
    - to:
        - podSelector:
            matchLabels:
              app: surrealdb
      ports:
        - protocol: TCP
          port: 8000
    # Allow to external HTTPS (for OpenAI, etc.)
    - to:
        - namespaceSelector: {}
      ports:
        - protocol: TCP
          port: 443
    # Allow to external HTTP
    - to:
        - namespaceSelector: {}
      ports:
        - protocol: TCP
          port: 80

---
# SurrealDB NetworkPolicy
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: surrealdb-netpol
  namespace: provisioning-rag
  labels:
    app: surrealdb
    component: networking
spec:
  podSelector:
    matchLabels:
      app: surrealdb
  policyTypes:
    - Ingress
    - Egress
  ingress:
    # Allow from RAG service
    - from:
        - podSelector:
            matchLabels:
              app: provisioning-rag
      ports:
        - protocol: TCP
          port: 8000
  egress:
    # Allow DNS
    - to:
        - namespaceSelector: {}
      ports:
        - protocol: UDP
          port: 53