ReplicaSet

replica-set.yml

apiVersion: apps/v1
kind: ReplicaSet

metadata:
  name: rs

spec:
  replicas: 2

  selector:
    matchLabels:
      service: rs-demo

  template:
    metadata:
      labels:
        service: rs-demo

    spec:
      containers:
        - name: db
          image: mongo:3.3
        - name: api
          image: user-service
          livenessProbe:
            httpGet:
              path: /demo/hello
              port: 8080
          env:
            - name: DB
              value: localhost