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阿里云容器服务 K8S Flexvolume 插件

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针对阿里云云盘、NAS、OSS存储开发的flexvolume 插件,可以支持kubernetes pod 自动绑定阿里云存储服务。

此版本支持Flexvolume, 静态pv. 对于动态pv尚不支持.

部署框架

系统框架图

安装使用该插件:

通过下面yaml配置进行部署阿里云K8S存储插件,目前支持CentOS 7 操作系统;

注意:

  1. 使用oss数据卷服务时必须配置Secret,如果只使用nas、云盘,则可以不配置Secret;
  2. 使用flexvolume需要kubelet关闭--enable-controller-attach-detach选项。默认阿里云K8S集群已经关闭此选项;
  3. 在kube-system用户空间部署flexvolume;
apiVersion: apps/v1 # for versions before 1.8.0 use extensions/v1beta1
kind: DaemonSet
metadata:
  name: flexvolume
  namespace: kube-system
  labels:
    k8s-volume: flexvolume
spec:
  selector:
    matchLabels:
      name: acs-flexvolume
  template:
    metadata:
      labels:
        name: acs-flexvolume
    spec:
      hostPID: true
      hostNetwork: true
      tolerations:
      - key: node-role.kubernetes.io/master
        operator: Exists
        effect: NoSchedule
      containers:
      - name: acs-flexvolume
        image: flexvolume:***
        imagePullPolicy: Always
        securityContext:
          privileged: true
        env:
        - name: ACS_DISK
          value: "true"
        - name: ACS_NAS
          value: "true"
        - name: ACS_OSS
          value: "true"
        - name: ACCESS_KEY_ID
          value: ""
        - name: ACCESS_KEY_SECRET
          value: ""
        - name: SLB_ENDPOINT
          value: ""
        - name: ECS_ENDPOINT
          value: ""
        resources:
          limits:
            memory: 200Mi
          requests:
            cpu: 100m
            memory: 200Mi
        volumeMounts:
        - name: usrdir
          mountPath: /host/usr/
        - name: etcdir
          mountPath: /host/etc/
        - name: logdir
          mountPath: /var/log/alicloud/
      volumes:
      - name: usrdir
        hostPath:
          path: /usr/
      - name: etcdir
        hostPath:
          path: /etc/
      - name: logdir
        hostPath:
          path: /var/log/alicloud/

注意事项

使用阿里云云盘时,定义的volumeName需要和VolumeId(DiskId)一致,原因是detach接口目前不支持传递spec;

此问题正在Track中:kubernetes/kubernetes#52590

ROADMAP

  • 支持动态PV
  • 控制台管理PV、PVC

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