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service-definition.yml

apiVersion: v1
kind: Service
metadata:
  name: back-end

spec:
  type: ClusterIP
  ports:
   - targetPort: 80
     port: 80

  selector:
    app: myapp
    type: back-end

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kubectl create -f 
service-definition.yml
kubectl get services

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Services-LoandBalancer

apiVersion: v1
kind: Service
metadata:
  name: myapp-service

spec:
  type: LoadBalancer
  ports:
   - targetPort: 80
     port: 80
     nodePort: 30008

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apiVersion: v1
kind: Service
metadata:
  name: webapp-service
spec:
  type: NodePort
  ports:
   - targetPort: 8080
     port: 8080
     nodePort: 30080
  selector:
    name: simple-webapp

kubectl create -f service-definition-1.yaml

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kubectl get service
kubectl get svc
kubectl describe svc kubernetes
kubectl describe deploy
kubectl describe deploy simple-webapp-deployment

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