affinity.podAffinity

apiVersion: v1
kind: Pod
metadata:
  name: with-node-affinity
spec:
  affinity: 
    nodeAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        nodeSelectorTerms:
        - matchExpressions:
          - key: topology.kubernetes.io/zone
            operator: In
            values:
            - antarctica-east1
            - antarctica-west1
      preferredDuringSchedulingIgnoredDuringExecution:
      - weight: 1
        preference:
          matchExpressions:
          - key: another-node-label-key
            operator: In
            values:
            - another-node-label-value
  containers:
  - name: with-node-affinity
    image: registry.k8s.io/pause:2.0
apiVersion: v1
kind: Pod
metadata:
  name: with-pod-affinity
spec:
  affinity:
    podAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
      - labelSelector:
          matchExpressions:

          - key: security

            operator: In

            values:

           - S1

        topologyKey: topology.kubernetes.io/zone

    podAntiAffinity:

      preferredDuringSchedulingIgnoredDuringExecution:

      - weight: 100

       podAffinityTerm:

          labelSelector:

            matchExpressions:

            - key: security

              operator: In

              values:

              - S2

          topologyKey: topology.kubernetes.io/zone

  containers:

  - name: with-pod-affinity

    image: registry.k8s.io/pause:2.0

Kubernetes pod affinity and anti affinity, Kubernetes Node Affinity, default-scheduler, affinity:, NodeAffinity, spec.affinity.podAntiAffinity, affinity.podAffinity