The CBS-CSI add-on allows you to select the storage class and create the corresponding PVs and PVCs of the CBS type in a TKE cluster on the console. This document introduces the features of the CBS-CSI add-on and some common use cases.
|Static volume||Supports manual creation of volumes, PV objects, and PVC objects.|
|Dynamic volume||Supports configuration, creation, and deletion of volumes and PV objects through StorageClass.|
|Storage topology awareness||CBS does not support cross-AZ mounting. In a cluster with multiple AZs, the CBS-CSI add-on will schedule pods first, and then volumes will be created in the AZ of the node where the pods are scheduled.|
|Scheduler awareness of node maxAttachLimit||By default, one Tencent CVM instance can mount up to 20 cloud disks. When scheduling pods, the scheduler will filter out nodes where the number of mounted cloud disks has exceeded the limit.|
|Online volume expansion||You can modify the PVC capacity field to implement online expansion (only the CBS type is supported).|
|Volume snapshot and restoration||Supports the creation of volumes through snapshots.|
After it is deployed in a cluster, the CBS-CSI add-on contains the following components: