nginx-tcp.yaml

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-config
data:
  nginx-config: |-
      error_log stderr notice;
      worker_processes auto;
      events {
        multi_accept on;
        use epoll;
        worker_connections 10240;
      }
      stream {
          upstream kube_apiserver {
              least_conn;
              server 10.230.248.225:6443;
          }
          server {
              listen        0.0.0.0:6443;
              proxy_pass    kube_apiserver;
              proxy_timeout 10m;
              proxy_connect_timeout 5s;
              proxy_buffer_size 64k;
          }
      }
---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: my-nginx
  labels:
    name: my-nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      name: my-nginx
  template:
    metadata:
      labels:
        name: my-nginx
    spec:
      containers:
      - image: nginx:1.12.2-alpine
        name: my-nginx
        volumeMounts:
        - name: nginx-config
          mountPath: /etc/nginx
      volumes:
      - name: nginx-config
        configMap:
          name: nginx-config
          items:
          - key: nginx-config
            path: nginx.conf
---
kind: Service
apiVersion: v1
metadata:
  name: my-nginx-service
spec:
  selector:
    name: my-nginx
  ports:
    - protocol: TCP
      port: 16443
      targetPort: 6443
      nodePort: 20001
  type: NodePort