[kubernetes]-k8s使用local pv

不念不忘少年蓝@ 2023-01-16 11:08 145阅读 0赞

hostpath

当pods对磁盘性能要求比较高 不允许网络抖动的情况。

![b92b5a72fddb97e534d2177038806f49.png][]

local pv

当数据不能根据pod调度时 让pod根据数据调度。让pod创建的时候 创建到原来的节点上。

![dcacd2eb1d3e8d5fd2b99fe9d6f4a6b2.png][]

![789b3fa5c312593e164cd9fa9122fb97.png][]

创建storageclass.yaml

---
    kind: StorageClass
    apiVersion: storage.k8s.io/v1
    metadata:
      name: local-storage
    provisioner: kubernetes.io/no-provisioner
    volumeBindingMode: WaitForFirstConsumer # 设置延迟绑定
    # Supported policies: Delete, Reta
    reclaimPolicy: Retain # 删除pvc时保留pv 需要手动删除pv

创建localpv.yaml

需要先将vdd磁盘通过fdisk 格式化成ext4格式

---
    apiVersion: v1
    kind: PersistentVolume
    metadata:
      name: local-pv
    spec:
      capacity:
        storage: 10Gi
      volumeMode: Filesystem
      accessModes:
      - ReadWriteOnce
      persistentVolumeReclaimPolicy: Retain
      storageClassName: local-storage
      local:
        path: /dev/vdd1
      nodeAffinity:
        required:
          nodeSelectorTerms:
          - matchExpressions:
            - key: kubernetes.io/hostname
              operator: In
              values:
              - k8s-worker-0.novalocal

创建pvc localpvc.yaml

---
    kind: PersistentVolumeClaim
    apiVersion: v1
    metadata:
      name: local-pvc
    spec:
      accessModes:
      - ReadWriteOnce
      storageClassName: local-storage
      resources:
        requests:
          storage: 10Gi

创建测试的pod-http.yaml

---
    apiVersion: v1
    kind: Pod
    metadata:
      name: www
      labels:
        name: www
    spec:
      containers:
      - name: www
        image: nginx:latest
        ports:
          - containerPort: 80
            name: www
        volumeMounts:
          - name: www-persistent-storage
            mountPath: /usr/share/nginx/html
      volumes:
        - name: www-persistent-storage
          persistentVolumeClaim:
            claimName: local-pvc

local volume manager管理local pv的生命周期

![c6091aa4f9e08c8b48525179ed8138c3.png][]

cd /srv/stuy/k201-master/3.Kubernetes容器持久化存储/config/localpv/local-static-provisioner

使用fdisk 分配并格式化磁盘 并挂载vdd1 到/mnt/disks/vdd

mount /dev/vdd1 /mnt/disks/vdd # 这个在provisioner/values.yaml中有用到

通过helm安装provisioner

cd /srv/stuy/k201-master/3.Kubernetes容器持久化存储/config/localpv/local-static-provisioner
    helm install local-static-provisioner  provisioner

创建statefulset测试

kubectl apply -f local-statefulset.yaml

[b92b5a72fddb97e534d2177038806f49.png]: /images/20221022/dc08879fb1774dc4a690bcda7d10d67b.png
[dcacd2eb1d3e8d5fd2b99fe9d6f4a6b2.png]: /images/20221022/2d3921f706774aec91ce5f7e2b17eaa4.png
[789b3fa5c312593e164cd9fa9122fb97.png]: /images/20221022/cf35a91db895404db2348b845c493368.png
[c6091aa4f9e08c8b48525179ed8138c3.png]: /images/20221022/64ddc611f61b4ad39f996ee1e20ab844.png