Prologue I never thought I will use nginx extensively in systems I involved after I found that nginx ingress has some limitations comparing to istio in 2021. Nginx is more than reverse proxy or webservers which I thought initially after several months of extensive usage in the past. Here I list serveral advanced use case I countered or discussed with other experts. CDN MaxCDN use https://docs.nginx.com/nginx/admin-guide/content-cache/content-caching/

Add command line flags in ingress controller: --tcp-services-configmap --udp-services-configmap Create configmap apiVersion: v1 kind: ConfigMap metadata: name: tcp-services namespace: ingress-nginx data: 5432: "default/postgres:5432" Patch the ingress-nginx-controller to allow port 5432 spec: template: spec: containers: - name: controller ports: - containerPort: 6379 hostPort: 6379 Add inbound rule to security group of node groups Reference: https://minikube.