k8s--storageClass自动创建PV

刺骨的言语ヽ痛彻心扉 2023-10-16 15:23 20阅读 0赞

#### 文章目录 ####

*  一、storageClass自动创建PV
 *   *  1.1 安装NFS
     *  1.2 创建nfs storageClass
     *  1.3 测试自动创建pv

## 一、storageClass自动创建PV ##

这里使用NFS实现

### 1.1 安装NFS ###

安装nfs-server： sh nfs_install.sh /mnt/data03 10.60.41.0/24

nfs\_install.sh

#!/bin/bash
    
    ### How to install it? ###
    ### 安装nfs-server，需要两个参数：1、挂载点  2、允许访问nfs-server的网段 ###
    
    ### How to use it? ###
    ### Client节点`yum -y install nfs-utils rpcbind`，然后挂载nfs-server目录到本地 ###
    ### 如：echo "192.168.0.20:/mnt/data01  /mnt/data01  nfs  defaults  0 0" >> /etc/fstab && mount -a ###
    
    mount_point=$1
    subnet=$2
    
    function nfs_server() {
        
      systemctl stop firewalld
      systemctl disable firewalld
      setenforce 0
      sed -i 's/^SELINUX.*/SELINUX\=disabled/' /etc/selinux/config
      yum -y install nfs-utils rpcbind
      mkdir -p $mount_point
      echo "$mount_point ${subnet}(rw,sync,no_root_squash)" >> /etc/exports
      systemctl start rpcbind && systemctl enable rpcbind
      systemctl restart nfs-server && systemctl enable nfs-server
      chown -R nfsnobody:nfsnobody $mount_point
    }
    
    function usage() {
        
    echo "Require 2 argument: [mount_point] [subnet]
    eg: sh $0 /mnt/data01 192.168.10.0/24"
    }
    
    declare -i arg_nums
    arg_nums=$#
    if [ $arg_nums -eq 2 ];then
      nfs_server
    else
      usage
      exit 1
    fi

### 1.2 创建nfs storageClass ###

创建： kubectl apply -f storageclass_deploy.yaml

storageclass\_deploy.yaml

apiVersion: v1
    kind: ServiceAccount
    metadata:
      name: nfs-provisioner
      namespace: devops
    ---
    apiVersion: rbac.authorization.k8s.io/v1
    kind: ClusterRole
    metadata:
      name: nfs-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: ["create", "update", "patch"]
    - apiGroups: [""]
      resources: ["services", "endpoints"]
      verbs: ["get"]
    ---
    apiVersion: rbac.authorization.k8s.io/v1
    kind: ClusterRoleBinding
    metadata:
      name: run-nfs-provisioner
    roleRef:
      apiGroup: rbac.authorization.k8s.io
      kind: ClusterRole
      name: nfs-provisioner-runner
    subjects:
    - kind: ServiceAccount
      name: nfs-provisioner
      namespace: devops
    ---
    apiVersion: rbac.authorization.k8s.io/v1
    kind: Role
    metadata:
      name: leader-locking-nfs-provisioner
      namespace: devops
    rules:
    - apiGroups: [""]
      resources: ["endpoints"]
      verbs: ["get", "list", "watch", "create", "update", "patch"]
    ---
    apiVersion: rbac.authorization.k8s.io/v1
    kind: RoleBinding
    metadata:
      name: leader-locking-nfs-provisioner
      namespace: devops
    roleRef:
      apiGroup: rbac.authorization.k8s.io
      kind: Role
      name: leader-locking-nfs-provisioner
    subjects:
    - kind: ServiceAccount
      name: nfs-provisioner
      namespace: devops
    ---
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: nfs-provisioner
    spec:
      selector:
        matchLabels:
           app: nfs-provisioner
      replicas: 1
      strategy:
        type: Recreate
      template:
        metadata:
          labels:
            app: nfs-provisioner
        spec:
          serviceAccountName: nfs-provisioner
          containers:
            - name: nfs-provisioner
              image: docker.io/gmoney23/nfs-client-provisioner:latest
              volumeMounts:
                - name: nfs-client-root
                  mountPath: /persistentvolumes
              env:
                - name: PROVISIONER_NAME
                  value: example.com/nfs
                - name: NFS_SERVER
                  value: 10.60.41.248
                - name: NFS_PATH
                  value: /mnt/data03
          volumes:
            - name: nfs-client-root
              nfs:
                server: 10.60.41.248
                path: /mnt/data03
    ---
    kind: StorageClass
    apiVersion: storage.k8s.io/v1
    metadata:
      name: nfs
    provisioner: example.com/nfs

### 1.3 测试自动创建pv ###

创建： kubectl apply -f test_auto_generate_pv.yaml
    创建pvc之后发现pv自动创建了，在/mnt/data03/ 目录下

![在这里插入图片描述][60b317ae32f741e3b46d8442047fd71d.png]

test\_auto\_generate\_pv.yaml

apiVersion: v1
    kind: PersistentVolumeClaim
    metadata:
      name: test-claim1
      namespace: devops
    spec:
      accessModes:
      - ReadWriteMany
      resources:
        requests:
          storage: 1Gi
      storageClassName: nfs
    ---
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: nginx-deployment
    spec:
      replicas: 1
      selector:
        matchLabels:
          name: nginx-pod
      template:
        metadata:
          labels:
            name: nginx-pod
          namespace: myapp
        spec:
          containers:
          - name: nginx
            image: docker.io/library/nginx:latest
            imagePullPolicy: IfNotPresent
            volumeMounts:
            - name: nfs-pvc
              mountPath: /usr/share/nginx/html
          volumes:
          - name: nfs-pvc
            persistentVolumeClaim:
              claimName: test-claim1

[60b317ae32f741e3b46d8442047fd71d.png]: https://img-blog.csdnimg.cn/60b317ae32f741e3b46d8442047fd71d.png