deployment 怎么把一个ns 下指定的Service 的多个deployment pods 只运行在指定污点节点？要其他pod不运行在上面,包括pods重新迭代都自动running 到这个污点节点

 apiVersion: apps/v1
   kind: Deployment
   metadata:
     name: my-deployment
   spec:
     replicas: 2
     selector:
       matchLabels:
         app: my-app
     template:
       metadata:
         labels:
           app: my-app
       spec:
         tolerations:
         - key: "example-key"
           operator: "Exists"
           effect: "NoSchedule"
         containers:
         - name: my-container
           image: my-image