k8s pod多副本增加节点亲和性设置防止多个副本部署到同一个node节点

      affinity:
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - weight: 100
            podAffinityTerm:
              labelSelector:
                matchExpressions:
                - key: app
                  operator: In
                  values:
                  - myPjName
              topologyKey: topology.kubernetes.io/zone


这里要配置 preferredDuringSchedulingIgnoredDuringExecution: 意思是软亲和性（不强求），如果配置requiredDuringSchedulingIgnoredDuringExecution（硬亲和性）会报错。

参考文档：https://kubernetes.io/zh/docs/concepts/scheduling-eviction/assign-pod-node/#node-affinity