Kubernetes  静态PV使用

Kubernetes支持持久卷的存储插件：
https://kubernetes.io/docs/concepts/storage/persistent-volumes/

• 缺点：手动创建pv比较繁琐、不适合大工程
• 优点：小规模使用方便灵活

1、创建pvc yaml文件
vim pvc.yaml

apiVersion: v1

kind: Pod

metadata:

  name: nginx6

spec:

  containers:

  - name: nginx6

    image: nginx

    # 挂在点

    volumeMounts:

    - name: wwwroot

      mountPath: /usr/share/nginx/html

    ports:

    - containerPort: 80

  # 挂载来源

  volumes:

  - name: wwwroot

    # 定义PVC

    persistentVolumeClaim:

      # 定义PVC名称

      claimName: my-pvc

---

apiVersion: v1

# 使用PVC类型

kind: PersistentVolumeClaim

metadata:

  # 与容器应用PVC相同

  name: my-pvc

spec:

  # 定义读写权限

  accessModes:

    - ReadWriteMany

  # 请求资源

  resources:

    requests:

      # 存储空间 5G

      storage: 5Gi

2、创建pv yaml文件
vim pv.yaml

apiVersion: v1

# PV类型

kind: PersistentVolume

metadata:

  # PV名称与PVC相同

  name: my-pv

spec:

  # 定义容量

  capacity:

    storage: 5Gi

  # 读写权限

  accessModes:

    - ReadWriteMany

  # nfs分配网络存储

  nfs:

    path: /data/nfs

    server: 192.168.1.115

3、执行创建pv容器

kubectl apply -f pv.yaml 

4、查看创建pv
kubectl get pv

NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE

# RWX：读写模式、Available：为可用状态

my-pv 5Gi RWX Retain Available 23s

5、创建pvc容器

kubectl apply -f pvc.yaml

6、查看pvc创建容器
kubectl get pod

NAME READY STATUS RESTARTS AGE

nginx6 1/1 Running 0 20s

7、查看pv与pvc状态
kubectl get pv,pvc

NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE

# Bound：已经使用以成绑定装填

persistentvolume/my-pv 5Gi RWX Retain Bound default/my-pvc 3m44s

NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE

# 以绑定到pv

persistentvolumeclaim/my-pvc Bound my-pv 5Gi RWX 78s

8、nfs共享目录下创建一个index.html

echo "<h1>xxxxxxxxx</h1>" > /data/nfs/index.html

9、进入容器测试
kubectl exec -it nginx6 bash

ls /usr/share/nginx/html

index.html