k8s存储 pv pvc ,storageclass

1. pv pvc

现在测试 glusterfs nfs 可读可写，多个pod绑定到同一个pvc上，可读可写。

2. storageclass 分成两种

(1) 建立pvc，相当于多个pod绑定在一个pvc上。

pvc的yaml

kind: PersistentVolumeClaim

apiVersion: v1

metadata:

  name: managed-nfs-storage-pvc

  annotations:

    volume.beta.kubernetes.io/storage-class: managed-nfs-storage

spec:

  accessModes:

    - ReadWriteOnce  #必须写ReadWriteOnce,否则报错。

  resources:

    requests:

      storage: 5Gi

deployment文件

apiVersion: extensions/v1beta1

kind: Deployment

metadata:

  name: nfs-pvc-test

spec:

  replicas:

  template:

    metadata:

      labels:

        app: nfs-pvc-test

    spec:

      containers:

      - name: nginx

        image: docker.cinyi.com:/nginx:alpine

        ports:

        - containerPort:

        volumeMounts:

        - name: www

          mountPath: /usr/share/nginx/html

      volumes:

      - name: www

        persistentVolumeClaim:

          claimName: managed-nfs-storage-pvc

---

apiVersion: v1

kind: Service

metadata:

  name: nfs-pvc-test

  labels:

    app: nfs-pvc-test

spec:

  type: NodePort

  ports:

  - port:

  selector:

    app: nfs-pvc-test

(2) 直接引用 storageclass

相当于每个pod都单独创建pvc，pv

新建statefulset

apiVersion: apps/v1beta1

kind: StatefulSet

metadata:

  name: web

spec:

  serviceName: "nginx1"

  replicas:

  volumeClaimTemplates:

  - metadata:

      name: test

      annotations:

        volume.beta.kubernetes.io/storage-class: "managed-nfs-storage" #此处引用classname

    spec:

      accessModes: ["ReadWriteOnce"]

      resources:

        requests:

          storage: 2Gi

  template:

    metadata:

      labels:

        app: nginx1

    spec:

      containers:

      - name: nginx1

        image: docker.cinyi.com:/senyint/nginx:v.

        volumeMounts:

        - mountPath: "/mnt"

          name: test

当使用ceph 块存储时，使用storageclass pvc 时， deployment 副本数写成多个，会报错。

巴特西

k8s存储 pv pvc ,storageclass

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