创建PV

kubectl create -f pv-volume-demo.yaml 

删除PV时;在pod未占用PV的情况下;通过删除PVC可以自动删除PV;注意创建完成PV后;并不会自动创建PVC;只有创建pod时;k8s才会创建PVC绑定pod跟相关的PV

kubectl delete pvc --all

# 也可以指定PVC进行删除

kubectl get pvc

kubectl delete pvc [pvc-name]

查看;

[root;aa /home/k8s_config/volume/pv]# kubectl get pv -o wide     
NAME     CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS      CLAIM   STORAGECLASS   REASON   AGE     VOLUMEMODE
nfspv1   1Gi        RWO            Retain           Available           nfs                     4m10s   Filesystem
[root;aa /home/k8s_config/volume/pv]# kubectl describe pv nfspv1 
Name:            nfspv1
Labels:          <none>
Annotations:     <none>
Finalizers:      [kubernetes.io/pv-protection]
StorageClass:    nfs
Status:          Available
Claim:           
Reclaim Policy:  Retain
Access Modes:    RWO
VolumeMode:      Filesystem
Capacity:        1Gi
Node Affinity:   <none>
Message:         
Source:
    Type:      NFS (an NFS mount that lasts the lifetime of a pod)
    Server:    188.2.139.31
    Path:      /data/syn
    ReadOnly:  false
Events:        <none>

创建一个StatefulSet

apiVersion: v1
kind: Service
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  ports:
  - port: 80
    name: web
  clusterIP: None
  selector:
    app: nginx
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: web
spec:
  selector:
    matchLabels:
      app: nginx
  serviceName: ;nginx;
  replicas: 3
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.16
        ports:
        - containerPort: 80
          name: web
        volumeMounts:
        - name: www
          mountPath: /usr/share/nginx/html
  volumeClaimTemplates:
  - metadata:
      name: www
    spec:
      accessModes: [;ReadWriteOnce;]     # 前面创建的PV也要时rwo
      storageClassName: ;nfs;            # 要与前面创建的PV保持一致
      resources:
        requests:
          storage: 1Gi

apiVersion: v1
kind: Service
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  ports:
  - port: 80
    name: web
  clusterIP: None
  selector:
    app: nginx
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: web
spec:
  selector:
    matchLabels:
      app: nginx
  serviceName: ;nginx;
  replicas: 3
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.16
        ports:
        - containerPort: 80
          name: web
        volumeMounts:
        - name: www
          mountPath: /usr/share/nginx/html
      - image: busybox:latest
        name: busybox-empty-demo
        imagePullPolicy: IfNotPresent
        command: [;/bin/sh;,;-c;,;sleep 6000s;]
        volumeMounts:
        - mountPath: /test          # cahnge mount dir
          name: www
  volumeClaimTemplates:
  - metadata:
      name: www
    spec:
      accessModes: [;ReadWriteOnce;]
      storageClassName: ;nfs;
      resources:
        requests:
          storage: 1Gi