kubernetes持久化存储-StorageClass

创建StorageClass持久化存储

以NFS 作为后端存储资源，在主节点安装NFS，共享/data/k8s/目录

$ systemctl stop firewalld.service
$ yum -y install nfs-utils rpcbind
$ mkdir -p /data/k8s
$ chmod 755 /data/k8s
$ vim /etc/exports
/data/k8s  *(rw,sync,no_root_squash)
$ systemctl start rpcbind.service
$ systemctl start nfs.service

创建 Provisioner，使用nfs-client 的自动配置程序， nfs-client.yaml

kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: nfs-client-provisioner
spec:
  replicas: 1
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: nfs-client-provisioner
    spec:
      serviceAccountName: nfs-client-provisioner
      containers:
        - name: nfs-client-provisioner
          image: quay.io/external_storage/nfs-client-provisioner:latest
          volumeMounts:
            - name: nfs-client-root
              mountPath: /persistentvolumes
          env:
            - name: PROVISIONER_NAME
              value: fuseim.pri/ifs
            - name: NFS_SERVER
              value: 172.16.1.100
            - name: NFS_PATH
              value: /data/k8s
      volumes:
        - name: nfs-client-root
          nfs:
            server: 172.16.1.100
            path: /data/k8s

创建 sa，然后绑定上对应的权限：（nfs-client-sa.yaml）

apiVersion: v1
kind: ServiceAccount
metadata:
  name: nfs-client-provisioner

---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: nfs-client-provisioner-runner
rules:
  - apiGroups: [""]
    resources: ["persistentvolumes"]
    verbs: ["get", "list", "watch", "create", "delete"]
  - apiGroups: [""]
    resources: ["persistentvolumeclaims"]
    verbs: ["get", "list", "watch", "update"]
  - apiGroups: ["storage.k8s.io"]
    resources: ["storageclasses"]
    verbs: ["get", "list", "watch"]
  - apiGroups: [""]
    resources: ["events"]
    verbs: ["list", "watch", "create", "update", "patch"]
  - apiGroups: [""]
    resources: ["endpoints"]
    verbs: ["create", "delete", "get", "list", "watch", "patch", "update"]

---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: run-nfs-client-provisioner
subjects:
  - kind: ServiceAccount
    name: nfs-client-provisioner
    namespace: default
roleRef:
  kind: ClusterRole
  name: nfs-client-provisioner-runner
  apiGroup: rbac.authorization.k8s.io

创建StorageClass，elasticsearch-storageclass.yaml

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: es-data-db
provisioner: fuseim.pri/ifs

部署

$ kubectl create -f nfs-client.yaml
$ kubectl create -f nfs-client-sa.yaml
$ kubectl create -f elasticsearch-storageclass.yaml 
$ kubectl  get pods 
NAME                                      READY   STATUS    RESTARTS   AGE
nfs-client-provisioner-5b486d9c65-9fzjz   1/1     Running   9          13d
$ kubectl get storageclass
NAME                PROVISIONER      AGE
es-data-db          fuseim.pri/ifs   13d