Log in to your Kubernetes control plane server.
Create a Deployment with multiple replicas.
vi web-deployment.yml
apiVersion: apps/v1
kind: Deployment
metadata:
name: web-deployment
spec:
replicas: 3
selector:
matchLabels:
app: web-deployment
template:
metadata:
labels:
app: web-deployment
spec:
containers:
- name: nginx
image: nginx:stable
kubectl apply -f web-deployment.yml
Check the Deployment's Pods.
kubectl get pods -o wide
Create a Service that points to the Deployment's Pods using the app label.
vi web-service.yml
apiVersion: v1
kind: Service
metadata:
name: web-service
spec:
type: ClusterIP
selector:
app: web-deployment
ports:
- protocol: TCP
port: 80
targetPort: 80
kubectl apply -f web-service.yml
Check the Service status and get its cluster IP address.
kubectl get service web-service
Use the cluster IP to test the service. Note: The cluster IP works from the Kubernetes control plane node due to the routing rules managed by kube-proxy.
curl <Service cluster IP address>