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当一个 pod 在同一台服务器上，同时这个 pod 如果消耗了大量资源，就需要进行反亲和力配置，让这个 pod 不在同一节点上。
参考如下

spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchExpressions:
              - key: app
                operator: In
                values:
                - store
            topologyKey: "kubernetes.io/hostname"
      containers:
      - name: redis-server
        image: redis:3.2-alpine


#最新配置
  spec:
      affinity:
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - weight: 100
            podAffinityTerm:    
              labelSelector:
                matchExpressions:
                - key: app
                  operator: In
                  values:
                  - ${DOCKER_NAME}
              topologyKey: "kubernetes.io/hostname"

参考链接 https://kubernetes.io/zh/docs/concepts/scheduling-eviction/assign-pod-node/