NFS 动态 PVC 的 StorageClass 和 StatefulSet

参考资料

• K3S/K8S 中动态创建 PVC 时 SelfLink 问题解决

搭建 NFS 服务器

1. 安装

   apt install -y nfs-kernel-server
   

2. 创建共享目录

   mkdir -p /d/nfs
   

3. 导出

   echo '/d/nfs *(rw,sync,no_root_squash)' >> /etc/exports
   
   exportfs -r
   

创建 NFS StorageClass

1. 克隆 NFS Provisioner 项目

   git clone https://github.com/kubernetes-sigs/nfs-subdir-external-provisioner.git
   

2. 下载资源文件

   wget -O nfs-client-provisioner-rbac.yaml   https://raw.githubusercontent.com/kubernetes-sigs/nfs-subdir-external-provisioner/master/deploy/rbac.yaml
   
   wget -O nfs-client-provisioner-deploy.yaml https://raw.githubusercontent.com/kubernetes-sigs/nfs-subdir-external-provisioner/master/deploy/deployment.yaml
   
   wget -O nfs-client-sc.yaml                 https://raw.githubusercontent.com/kubernetes-sigs/nfs-subdir-external-provisioner/master/deploy/class.yaml
   

3. 批量替换 Namespace

   NAMESPACE=local
   
   sed -i'' "s/namespace:.*/namespace: $NAMESPACE/g" nfs-client-provisioner-deploy.yaml nfs-client-provisioner-rbac.yaml
   

4. 修改 Deployment 配置

   • 镜像 registry.cn-beijing.aliyuncs.com/pylixm/nfs-subdir-external-provisioner:v4.0.0
   • NFS 主机 192.192.192.6
   • NFS 目录 /d/nfs

5. 创建资源

   kubectl create -f nfs-client-provisioner-rbac.yaml
   
   kubectl create -f nfs-client-provisioner-deploy.yaml
   
   kubectl create -f nfs-client-sc.yaml
   

创建 StatefulSet

• mysql-sts.yaml

  apiVersion: apps/v1
  kind: StatefulSet
  metadata:
    namespace: local
    name: mysql-sts
    labels:
      app: mysql
  spec:
    selector:
      matchLabels:
        app: mysql
    serviceName: mysql
    replicas: 1
    template:
      metadata:
        labels:
          app: mysql
      spec:
        containers:
          - name: mysql
            image: mysql:8.0.20
            args:
              - --lower-case-table-names=1
              - --default-authentication-plugin=mysql_native_password
              - --default-time-zone=+8:00
            env:
              - name: MYSQL_ROOT_PASSWORD
                value: root
            ports:
              - containerPort: 3306
            volumeMounts:
              - mountPath: /var/lib/mysql
                name: data
    volumeClaimTemplates:
      - metadata:
          name: data
        spec:
          storageClassName: nfs-client
          accessModes:
            - ReadWriteOnce
          resources:
            requests:
              storage: 1Gi
  

• mysql-svc.yaml

  apiVersion: v1
  kind: Service
  metadata:
    namespace: local
    name: mysql-svc
    labels:
      app: mysql
  spec:
    type: ClusterIP
    clusterIP: None
    selector:
      app: mysql
    ports:
      - port: 3306
  

检查

kubectl get all -n local -o wide

kubectl get pvc -n local -o wide

kubectl get pv -o wide