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Kubernetes Services - ClusterIP

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In this section we will take a look at services - ClusterIP in kubernetes

ClusterIP

In this case the service creates a Virtual IP inside the cluster to enable communication between different services such as a set of frontend servers to a set of backend servers.

What is a right way to establish connectivity between these services or tiers

A kubernetes service can help us group the pods together and provide a single interface to access the pod in a group.

To create a service of type ClusterIP

apiVersion: v1
kind: Service
metadata:
 name: back-end
spec:
 types: ClusterIP
 ports:
 - targetPort: 80
   port: 80
 selector:
   app: myapp
   type: back-end

$ kubectl create -f service-definition.yaml

To list the services

$ kubectl get services

srvc3

K8s Reference Docs:

https://kubernetes.io/docs/concepts/services-networking/service/
https://kubernetes.io/docs/tutorials/kubernetes-basics/expose/expose-intro/