Container Service for Kubernetes:Manage the cnfs-nas-daemon component

Overview

The cnfs-nas-daemon component operates as a containerized DaemonSet, embedding client tools for NAS and CPFS. This component:

• Does not require installation of client tools on Kubernetes nodes.

• Supports:

  • NAS: Mount via Elastic File Client (EFC) client using CNFS

  • CPFS: Mount statically provisioned CPFS for Lingjun volumes

Prerequisites

• The cluster runs Kubernetes 1.26 or later. Manually upgrade the cluster if needed.

• The csi-plugin component V1.33.1 or later is installed in the cluster. To upgrade, see Manage the csi-plugin and csi-provisioner components.

Procedure

1. Log on to the ACK console. In the left navigation pane, click Clusters.

2. On the Clusters page, find the one you want to manage and click its name. In the left navigation pane, click Add-ons.

3. Click the Storage tab.

4. Install the cnfs-nas-daemon component.

   After installing cnfs-nas-daemon, the system will automatically deploy a DaemonSet in the cluster.

   1. Find the cnfs-nas-daemon component and click Install.

   2. Configure the DaemonSet parameters for cnfs-nas-daemon as needed and click OK.

      Important

      The DaemonSet for cnfs-nas-daemon defaults to updateStrategy: OnDelete, preventing mass disruption of pods with mounted volumes during component upgrades. You can manually delete the original pods to complete the update, or modify updateStrategy to RollingUpdate.

   3. Verify the deployment status of the DaemonSet for cnfs-nas-daemon:

      kubectl get pods -n cnfs-system -l app=cnfs-nas-daemon 

      Expected output:

      NAME                    READY   STATUS    RESTARTS   AGE
      cnfs-nas-daemon-47mjw   1/1     Running   0          56s
      cnfs-nas-daemon-dkf4d   1/1     Running   0          56s
      cnfs-nas-daemon-s2btk   1/1     Running   0          56s

      Important

      When a cnfs-nas-daemon pod restarts, it also restarts the related NAS or CPFS client process:

      • During this restart period, I/O operations on the mount point will be temporarily blocked or delayed.

      • After the restart is complete, I/O operations will automatically resume normal functionality, typically without causing service disruption.

5. Modify the parameter configuration of csi-plugin to enable cnfs-nas-daemon:

   1. Locate the csi-plugin component and click Configuration.

   2. Add AlinasMountProxy=true to FeatureGate.

      After adding this feature gate, Container Storage Interface (CSI) will use cnfs-nas-daemon for mounting.