|NO.Z.00024|——————————|CloudNative|——|Kubernetes&持久化存储.V02|——|PV/PVC|

一、持久化存储pv/pvc

二、持久化存储pv/pvc实验

### --- 删除历史创建

[root@k8s-master pv]# kubectl delete -f nfs-nginx.yaml 
deployment.apps "nginx-dep1" deleted

### --- 创建一个pvc和pv

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-dep1
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        volumeMounts:
        - name: wwwroot
          mountPath: /usr/share/nginx/html
        ports:
        - containerPort: 80
      volumes:
      - name: wwwroot
        persistentVolumeClaim:
          claimName: my-pvc

---

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: my-pvc
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 5Gi

### --- 执行pvc

[root@k8s-master pv]# kubectl apply -f pvc.yaml     
deployment.apps/nginx-dep1 created
persistentvolumeclaim/my-pvc created

[root@k8s-master pv]# kubectl get pods
nginx-dep1-58b7bf955f-n2jn7                     0/1     Running     0          34s
nginx-dep1-58b7bf955f-s4v79                     0/1     Running     0          37s
nginx-dep1-58b7bf955f-tlprc                     0/1     Running     0          34s

[root@k8s-master pv]# kubectl apply -f pv.yaml 
pdeployment.apps/nginx-dep1 created
persistentvolumeclaim/my-pvc created

### --- pv里面绑定了PVC

[root@k8s-master pv]# kubectl get pv,pvc            
NAME                     CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM            STORAGECLASS   REASON   AGE
persistentvolume/my-pv   5Gi        RWX            Retain           Bound    default/my-pvc                           44s

NAME                           STATUS   VOLUME   CAPACITY   ACCESS MODES   STORAGECLASS   AGE
persistentvolumeclaim/my-pvc   Bound    my-pv    5Gi        RWX                           2m7s

### --- 进入到服务查看

[root@k8s-master pv]# kubectl exec -it nginx-dep1-58b7bf955f-n2jn7 bash
root@nginx-dep1-58b7bf955f-n2jn7:/# ls /usr/share/nginx/html
index.html

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Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart

                                                                                                                                                   ——W.S.Landor

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