Manage Nodes

Prerequisites

Working Volume Manager plugin

To install the plugin, refer to the plugin installation guide.
Working Volume Manager CSI driver in Kubernetes

To install the driver, refer to the driver installation guide.

Add node

Add a node to the Volume Manager DaemonSet, then run the discover command.

$ kubectl directpv discover

Drives from the added node are not available for Volume Manager to use until you initialize them with the init command.

List node

Use the info command to list nodes.

$ kubectl directpv info
┌──────────┬──────────┬───────────┬─────────┬────────┐
│ NODE     │ CAPACITY │ ALLOCATED │ VOLUMES │ DRIVES │
├──────────┼──────────┼───────────┼─────────┼────────┤
│ • master │ 512 MiB  │ 32 MiB    │ 2       │ 1      │
│ • node1  │ 512 MiB  │ 32 MiB    │ 2       │ 1      │
└──────────┴──────────┴───────────┴─────────┴────────┘

64 MiB/1.0 GiB used, 4 volumes, 2 drives

Delete node

CAUTION: THIS IS DANGEROUS OPERATION WHICH LEADS TO DATA LOSS

Before removing a node, make sure no volumes or drives on the node are in use. Then, remove the node from Volume Manager DaemonSet and run the remove-node.sh script.