I have two services (client and server) both of types of load balancer. I would like to make the client service talking to server service. How do I do programmatically (via yaml file etc).

More explicitly client runs a python code in which it needs access to server's external ip. However I only know server service name not external ip.

of course one way to solve this issue is to launch server first and get the external ip and add it to client's yaml file. I am looking for solution like accessing external ip by just knowing the service name.

Client and server resides in the same kubernetes cluster.

Client.yaml Client runs a web server and if someone hits the url advertised by web server demo.py should make a call to the server's service. I was thinking of a way to get the server's external-ip programmatically here, however I am open for suggestions.

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name:client-deployment
spec:
  replicas: 3
  template:
    metadata:
      labels:
        app: client
    spec:
      containers:
      - name: client-container
        image: client_image:latest
        command:
          - "python"
          - "/root/demo.py"
        ports:
        - containerPort: 5000
---
apiVersion: v1
kind: Service
metadata:
  labels:
    run: client-service
  name: client-service
spec:
  ports:
  - port: 5000
    targetPort: 5000
  selector:
    app: inception-client
  type: LoadBalancer

Server.yaml: It exposes a service at port 9000, which client should call.

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: server-deployment
spec:
  replicas: 3
  template:
    metadata:
      labels:
        app: server
    spec:
      containers:
      - name: server-container
        image: server_image:latest
        command:
        - <Command to start a server which listens on port 9000>
        ports:
        - containerPort: 9000
---
apiVersion: v1
kind: Service
metadata:
  labels:
    run: server-service
  name: server-service
spec:
  ports:
  - port: 9000
    targetPort: 9000
  selector:
    app: server
  type: LoadBalancer