Digitalocean kube.netes 集群负载均衡器不能正常工作作为循环法

Question

I created a Digitalocean kube.netes cluster and create a service with 4 replicas. the service type is LoadBalancer . the load balancer is also created. but I posted my request to the target endpoint by using postman. and I have written the endpoint with the pod host name . but every time I get the response from the same pod. if the load is balanced by the load balancer, the requests should go to each and every pods. but is not happening as I expected. my manifest file like below.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: user-service-deployment
  labels:
    app: user-service
spec:
  replicas: 3
  selector:
    matchLabels:
      app: user-service
  template:
    metadata:
      labels:
        app: user-service
    spec:
      containers:
        - name: user-service
          image: myRepo/ms-user-service:1.0.1
          ports:
            - containerPort: 8080
          env:
            - name: SPRING_PROFILES_ACTIVE
              value: proud
            - name: MY_NODE_NAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName


---
apiVersion: v1
kind: Service
metadata:
  name: user-service
spec:
  selector:
    app: user-service
  type: LoadBalancer
  ports:
    - protocol: TCP
      port: 8080
      targetPort: 8080

please resolve this problem.

Answer 1

you have to disable the keepalive feature (service.beta.kube.netes.io/do-loadbalancer-enable-backend-keepalive) when you create the service. under the metadata.annotations you can configure it like the below. read for more detail.

apiVersion: v1
kind: Service
metadata:
  name: user-service
  annotations:
    service.beta.kubernetes.io/do-loadbalancer-enable-backend-keepalive: "false"
spec:
  selector:
    app: user-service
  type: LoadBalancer
  ports:
    - protocol: TCP
      port: 8080
      targetPort: 8080