back-deployment.yml

apiVersion: apps/v1           # API version
kind: Deployment              # Type of kubernetes resource
metadata:
  name: back    # Name of the kubernetes resource
  labels:                     # Labels that will be applied to this resource
    app: back
spec:
  replicas: 2                 # No. of replicas/pods to run in this deployment
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxSurge: 0
      maxUnavailable: 1
  selector:
    matchLabels:              # The deployment applies to any pods mayching the specified labels
      app: back
  template:                   # Template for creating the pods in this deployment
    metadata:
      labels:                 # Labels that will be applied to each Pod in this deployment
        app: back
    spec:                     # Spec for the containers that will be run in the Pods
      containers:
      - name: back
        image: index.docker.io/mz77/mzfood:back
        imagePullPolicy: Always
        ports:
          - name: http
            containerPort: 8080 # The port that the container exposes
        resources:
          limits:
            cpu: 0.2
            memory: "200Mi"
---
apiVersion: v1                # API version
kind: Service                 # Type of the kubernetes resource
metadata:                     
  name: back    # Name of the kubernetes resource
  labels:                     # Labels that will be applied to this resource
    app: back
spec:                         
  type: NodePort              # The service will be exposed by opening a Port on each node and proxying it. 
  selector:
    app: back   # The service exposes Pods with label `app=back`
  ports:                      # Forward incoming connections on port 8080 to the target port 8080
  - name: http
    port: 8080
    nodePort: 31001
    targetPort: 8080