pod_affinityPod.yaml

apiVersion: v1
kind: Pod
metadata:
  name: go-http-podaffinity
spec:
  containers:
    - name: go-http
      image: leigg/hellok8s:v1
  #  nodeSelector: 如果和亲和性同时配置，则必须都满足
  affinity:
    # podAffinity 可以和 podAntiAffinity 同时存在
    podAffinity: # pod亲和性
      requiredDuringSchedulingIgnoredDuringExecution:
        - labelSelector:
            matchExpressions:
              - { key: app, operator: In, values: [ "go" ] }
          topologyKey: kubernetes.io/os # 必须指定，它是你希望调度Pod的目标节点群共有的标签，亲和性规则也仅会在此节点群生效
    #          namespaces: ["dev","test"]  允许指定命名空间，不指定则是当前Pod所在的空间
    #          namespaceSelector: # 或者 使用标签筛选命令空间
    #            matchExpressions:
    #              - key:
    #                operator:
    #            matchLabels:
    #              - environment: production
    #      preferredDuringSchedulingIgnoredDuringExecution:
    #        - podAffinityTerm:
    #            topologyKey:
    #          weight:
    podAntiAffinity: # pod反亲和性
      requiredDuringSchedulingIgnoredDuringExecution:
        - labelSelector:
            matchExpressions:
              - { key: highcpu, operator: In, values: [ "true" ] }
          topologyKey: kubernetes.io/hostname # 反亲和性中，此key的值固定为 kubernetes.io/hostname