K8S挂载pv不成功的原因

1. 各Node节点上没有安装NFS的软件包,需要先安装nfs-utils
2. PV声明时,如下, accessMode 和PVC申请的accessMode不匹配,一般ReadWriteOnce,ReadWriteMany,ReadWriteOnly.
3. 容量大小不一致, 比如下面的配置是5G,那么申请的必须小于5G才行

4. apiVersion: v1
   kind: PersistentVolume
   metadata:
       name: nginx7
   spec:
       capacity:
         storage: 5Gi
       accessModes:
         - ReadWriteOnce
       persistentVolumeReclaimPolicy: Recycle
   #    storageClassName: slow
       nfs:
         path: /home/share/k8s/nginx-7
         server: 192.168.10.10
   

   kind: PersistentVolumeClaim
   apiVersion: v1
   metadata:
     name: nginx-pvc
     labels:
       pvc: nginx-pvc
   spec:
     accessModes:
       - ReadWriteMany
     resources:
       requests:
         storage: 2Gi
     storageClassName: slow
     selector:
       matchLabels:
         pv: nginx-pv