16.9.3.2. Pod 유사성 방지

Pod pod-s1에는 라벨 security:s1이 있습니다.

$ cat pod-s1.yaml
apiVersion: v1
kind: Pod
metadata:
  name: pod-s1
  labels:
    security: s1
spec:
  containers:
  - name: ocp
    image: docker.io/ocpqe/hello-pod

Pod pod-s2에는 podAntiAffinity 아래에 라벨 선택기 security:s1이 있습니다.

$ cat pod-s2.yaml
apiVersion: v1
kind: Pod
metadata:
  name: pod-s2
spec:
  affinity:
    podAntiAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
      - labelSelector:
          matchExpressions:
          - key: security
            operator: In
            values:
            - s1
        topologyKey: kubernetes.io/hostname
  containers:
  - name: pod-antiaffinity
    image: docker.io/ocpqe/hello-pod