1. Export existing service definition:
kubectl -n istio-ingress get service istio-ingressgateway -o yaml > istio_ingressgateway.yaml
2. Check existing Nodeports (The range of valid ports is 30000-32767)
kubectl get svc -A |grep Load
kubectl get svc -A |grep NodePort
3. Choose 4 free ports (e.g. 30900, 30901,30902, 30903)
4. Edit istio_ingressgateway.yaml and add:
- port: 9003
nodePort: 30903
targetPort: 9003
name: kafka-bootstrap
protocol: TCP
- port: 9000
nodePort: 30900
targetPort: 9000
name: kafka-0
protocol: TCP
- port: 9001
nodePort: 30901
targetPort: 9001
name: kafka-1
protocol: TCP
- port: 9002
nodePort: 30902
targetPort: 9002
name: kafka-2
protocol: TCP
5. Apply changes:
kubectl apply -f ./istio_ingressgateway.yaml | 