gistfile1.txt

apiVersion: v1
kind: Pod
metadata:
  name: pod-s3
  annotations:
   scheduler.alpha.kubernetes.io/affinity: >
    {"podAntiAffinity": {
      "requiredDuringSchedulingIgnoredDuringExecution": [
       {
          "labelSelector" :{
          "matchExpressions": [
             {
              "key": "security",
              "operator": "In",
              "values": ["s1"]
             }
           ]
          },
         "topologyKey": "kubernetes.io/hostname"
       }]
     }}
spec:  
 containers:
  - name: pod-antiaffinity
    image: docker.io/ocpqe/hello-pod