配置Persistent Volume的Node Affinity时遇报错，请求协助

问题原因 #

你遇到的strict decoding error: unknown field "spec.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution"错误，是因为Persistent Volume（PV）的NodeAffinity字段结构和Pod的不一致。你误用了Pod的NodeAffinity字段名（requiredDuringSchedulingIgnoredDuringExecution），但PV的API定义中对应的字段是简化的required。

修正后的PV配置 #

将PV的nodeAffinity部分修改为以下结构：

apiVersion: v1
kind: PersistentVolume
metadata:
  name: blue-pv-cka
spec:
  capacity:
    storage: 100Mi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: blue-stc-cka
  local:
   path: /opt/blue-data-cka
  nodeAffinity:
    required:  # 替换原来的requiredDuringSchedulingIgnoredDuringExecution
      nodeSelectorTerms:
        - matchExpressions:
            - key: node-role.kubernetes.io/control-plane
              operator: Exists

补充说明 #

K8s API中，PV的nodeAffinity遵循PersistentVolumeNodeAffinity类型定义，仅包含required和preferred两个顶级字段；而Pod的nodeAffinity属于NodeAffinity类型，使用requiredDuringSchedulingIgnoredDuringExecution和preferredDuringSchedulingIgnoredDuringExecution这两个长字段名，这是两者的核心差异。

内容的提问来源于stack exchange，提问作者Anindya Kar