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【K8s】初识PV和PVC
【k8s】存储 pv 参数列表
【k8s】存储 pvc 参数列表

1. pv概述

PV 持久卷是用插件的形式来实现的。Kubernetes 目前支持以下插件：

• cephfs - CephFS volume
• csi - 容器存储接口 (CSI)
• fc - Fibre Channel (FC) 存储
• hostPath - HostPath 卷 （仅供单节点测试使用；不适用于多节点集群；请尝试使用 local 卷作为替代）
• iscsi - iSCSI (SCSI over IP) 存储
• local - 节点上挂载的本地存储设备
• nfs - 网络文件系统 (NFS) 存储
• rbd - Rados 块设备 (RBD) 卷

以local为例：

apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv-local
spec :
  capacity:
    storage: 2Gi
  volumeMode: Filesystem
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Delete
  storageClassName: local-storage
  local:
    path: /data/localpv # k8s-node-03节点上的目录
  nodeAffinity:
    required:
      nodeSelectorTerms:
        - matchExpressions:
            - key: kubernetes.io/hostname
              operator: In
              values :
                - k8s-node-03

pv资源类型不是通过统一的type='xxx’进行区分的，而是直接使用特定的属性，例如上面的local 就是 表示local pv

2. pv完整参数列表

完整的参数类型如下：

[root@paas-controller-3:/home/ubuntu]$ kubectl explain pv.spec
KIND:     PersistentVolume
VERSION:  v1

RESOURCE: spec <Object>

DESCRIPTION:
     Spec defines a specification of a persistent volume owned by the cluster.
     Provisioned by an administrator. More info:
     https://kubernetes.io/docs/concepts/storage/persistent-volumes#persistent-volumes

     PersistentVolumeSpec is the specification of a persistent volume.

FIELDS:
   accessModes  <[]string>
     AccessModes contains all ways the volume can be mounted. More info:
     https://kubernetes.io/docs/concepts/storage/persistent-volumes#access-modes

   awsElasticBlockStore <Object>
     AWSElasticBlockStore represents an AWS Disk resource that is attached to a
     kubelet's host machine and then exposed to the pod. More info:
     https://kubernetes.io/docs/concepts/storage/volumes#awselasticblockstore

   azureDisk    <Object>
     AzureDisk represents an Azure Data Disk mount on the host and bind mount to
     the pod.

   azureFile    <Object>
     AzureFile represents an Azure File Service mount on the host and bind mount
     to the pod.

   capacity     <map[string]string>
     A description of the persistent volume's resources and capacity. More info:
     https://kubernetes.io/docs/concepts/storage/persistent-volumes#capacity

   cephfs       <Object>
     CephFS represents a Ceph FS mount on the host that shares a pod's lifetime

   cinder       <Object>
     Cinder represents a cinder volume attached and mounted on kubelets host
     machine. More info: https://examples.k8s.io/mysql-cinder-pd/README.md

   claimRef     <Object>
     ClaimRef is part of a bi-directional binding between PersistentVolume and
     PersistentVolumeClaim. Expected to be non-nil when bound. claim.VolumeName
     is the authoritative bind between PV and PVC. More info:
     https://kubernetes.io/docs/concepts/storage/persistent-volumes#binding

   csi  <Object>
     CSI represents storage that is handled by an external CSI driver (Beta
     feature).

   fc   <Object>
     FC represents a Fibre Channel resource that is attached to a kubelet's host
     machine and then exposed to the pod.

   flexVolume   <Object>
     FlexVolume represents a generic volume resource that is
     provisioned/attached using an exec based plugin.

   flocker      <Object>
     Flocker represents a Flocker volume attached to a kubelet's host machine
     and exposed to the pod for its usage. This depends on the Flocker control
     service being running

   gcePersistentDisk    <Object>
     GCEPersistentDisk represents a GCE Disk resource that is attached to a
     kubelet's host machine and then exposed to the pod. Provisioned by an
     admin. More info:
     https://kubernetes.io/docs/concepts/storage/volumes#gcepersistentdisk

   glusterfs    <Object>
     Glusterfs represents a Glusterfs volume that is attached to a host and
     exposed to the pod. Provisioned by an admin. More info:
     https://examples.k8s.io/volumes/glusterfs/README.md

   hostPath     <Object>
     HostPath represents a directory on the host. Provisioned by a developer or
     tester. This is useful for single-node development and testing only!
     On-host storage is not supported in any way and WILL NOT WORK in a
     multi-node cluster. More info:
     https://kubernetes.io/docs/concepts/storage/volumes#hostpath

   iscsi        <Object>
     ISCSI represents an ISCSI Disk resource that is attached to a kubelet's
     host machine and then exposed to the pod. Provisioned by an admin.

   local        <Object>
     Local represents directly-attached storage with node affinity

   mountOptions <[]string>
     A list of mount options, e.g. ["ro", "soft"]. Not validated - mount will
     simply fail if one is invalid. More info:
     https://kubernetes.io/docs/concepts/storage/persistent-volumes/#mount-options

   nfs  <Object>
     NFS represents an NFS mount on the host. Provisioned by an admin. More
     info: https://kubernetes.io/docs/concepts/storage/volumes#nfs

   nodeAffinity <Object>
     NodeAffinity defines constraints that limit what nodes this volume can be
     accessed from. This field influences the scheduling of pods that use this
     volume.
     # 亲和性 

   persistentVolumeReclaimPolicy        <string>
     What happens to a persistent volume when released from its claim. Valid
     options are Retain (default for manually created PersistentVolumes), Delete
     (default for dynamically provisioned PersistentVolumes), and Recycle
     (deprecated). Recycle must be supported by the volume plugin underlying
     this PersistentVolume. More info:
     https://kubernetes.io/docs/concepts/storage/persistent-volumes#reclaiming

   photonPersistentDisk <Object>
     PhotonPersistentDisk represents a PhotonController persistent disk attached
     and mounted on kubelets host machine

   portworxVolume       <Object>
     PortworxVolume represents a portworx volume attached and mounted on
     kubelets host machine

   quobyte      <Object>
     Quobyte represents a Quobyte mount on the host that shares a pod's lifetime

   rbd  <Object>
     RBD represents a Rados Block Device mount on the host that shares a pod's
     lifetime. More info: https://examples.k8s.io/volumes/rbd/README.md

   scaleIO      <Object>
     ScaleIO represents a ScaleIO persistent volume attached and mounted on
     Kubernetes nodes.

   storageClassName     <string>
     Name of StorageClass to which this persistent volume belongs. Empty value
     means that this volume does not belong to any StorageClass.

   storageos    <Object>
     StorageOS represents a StorageOS volume that is attached to the kubelet's
     host machine and mounted into the pod More info:
     https://examples.k8s.io/volumes/storageos/README.md

   volumeMode   <string>
     volumeMode defines if a volume is intended to be used with a formatted
     filesystem or to remain in raw block state. Value of Filesystem is implied
     when not included in spec.

   vsphereVolume        <Object>
     VsphereVolume represents a vSphere volume attached and mounted on kubelets
     host machine

参考

关于k8s持久卷
研发工程师玩转Kubernetes——local型PV和PVC绑定过程中的状态变化