之前添加服务都只会添加到同一个节点中,下面的方法可以将同一个服务分散到不同的节点里

apiVersion: v1
kind: Service
metadata:
  name: java-question
  labels:
    name: java-question
spec:
  selector:
    app: java-question          #这里选择器一定要选择容器的标签，之前写name:kube-node是错的。
  type: NodePort      #这里代表是NodePort类型的  
  ports:
  - port: 8806        #这里的端口和clusterIP对应，即ip:8080,供内部访问。
    targetPort: 8806  #端口一定要和container暴露出来的端口对应
    protocol: TCP

    
---    

apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  labels:
    app: java-question
  name: java-question
spec:
  replicas: 2
  selector:
    matchLabels:
      app: java-question
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 25%
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: java-question
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchExpressions:
              - key: app
                operator: In
                values:
                - java-question
            topologyKey: "kubernetes.io/hostname"
        podAntiAffinity:
      # 软策略
          preferredDuringSchedulingIgnoredDuringExecution:
          - weight: 1
            podAffinityTerm:
              labelSelector:
                matchExpressions:
                - key: app
                  operator: In
                  values:
                  - java-question
          # 拓扑域（node上的标签key）
              topologyKey: kubernetes.io/hostname
      containers:
      - image: registry.cn-zhangjiakou.aliyuncs.com/xxxx
        name: java-question
        imagePullPolicy: Always
        resources: {}
        ports:
        - containerPort: 8806
        env:
        - name: TZ
          value: Asia/Shanghai
      imagePullSecrets:
      - name: aliyuncs-registry  



status: {}