gateway+httproute.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
spec:
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
        - name: nginx
          image: nginx:alpine
          resources:
            limits:
              memory: "128Mi"
              cpu: "500m"
          ports:
            - containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: nginx
spec:
  selector:
    app: nginx
  ports:
    - port: 80
      targetPort: 80
---
apiVersion: gateway.networking.k8s.io/v1
kind: Gateway
metadata:
  name: nginx
  annotations:
    cert-manager.io/cluster-issuer: letsencrypt-staging
spec:
  gatewayClassName: cilium
  listeners:
    - protocol: HTTPS
      port: 443
      name: https
      hostname: nginx.dmmo.io
      allowedRoutes:
        namespaces:
          from: Same
      tls:
        mode: Terminate
        certificateRefs:
          - name: nginx-tls
    - protocol: HTTP
      port: 80
      name: http
      allowedRoutes:
        namespaces:
          from: Same
---
apiVersion: gateway.networking.k8s.io/v1
kind: HTTPRoute
metadata:
  name: default
spec:
  hostnames:
    - nginx.dmmo.io
  parentRefs:
    - name: nginx
  rules:
    - backendRefs:
        - name: nginx
          port: 80