Kubernetes Cookbook - Second Edition

Microservices

Microservices (my-calc) uses the Kubernetes deployment and service, but it needs to communicate to other pods only. In other words, there's no need to expose it to the outside Kubernetes network. Therefore, the service type is set as ClusterIP:

$ cat my-calc.yaml apiVersion: apps/v1kind: Deploymentmetadata:  name: my-calc-deployspec:  replicas: 2  selector:    matchLabels:      run: my-calc  template:    metadata:      labels:        run: my-calc    spec:      containers:      - name: my-calc        image: hidetosaito/my-calc---apiVersion: v1kind: Servicemetadata:  name: my-calc-servicespec:  ports:    - protocol: TCP      port: 5000  type: ClusterIP  selector:     run: my-calc

Use the kubectl command to load the my-calc pods as follows:

$ kubectl create -f my-calc.yaml deployment.apps ...